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WO2007037393A1 - Procédé de production de films multicouches, films multicouches et éléments optiques de films multicouches - Google Patents

Procédé de production de films multicouches, films multicouches et éléments optiques de films multicouches Download PDF

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Publication number
WO2007037393A1
WO2007037393A1 PCT/JP2006/319503 JP2006319503W WO2007037393A1 WO 2007037393 A1 WO2007037393 A1 WO 2007037393A1 JP 2006319503 W JP2006319503 W JP 2006319503W WO 2007037393 A1 WO2007037393 A1 WO 2007037393A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminate
film
thickness
multilayer film
laminated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2006/319503
Other languages
English (en)
Japanese (ja)
Inventor
Hiroyo Okamura
Tetsuyuki Iwashita
Masakazu Matsui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP2007513517A priority Critical patent/JPWO2007037393A1/ja
Publication of WO2007037393A1 publication Critical patent/WO2007037393A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/342—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7334—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being glossy or matt, reflective or refractive
    • B29C66/73343—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being glossy or matt, reflective or refractive at least one of the parts to be joined being matt or refractive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • B29C66/91645—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B29C66/92443—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
    • B29C66/92445—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73117—Tg, i.e. glass transition temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73771—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73775—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91935—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined lower than said fusion temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91941—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined
    • B29C66/91943—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined higher than said glass transition temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0031—Refractive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0039—Amorphous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/004—Semi-crystalline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0041—Crystalline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3475—Displays, monitors, TV-sets, computer screens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • G02B5/287—Interference filters comprising deposited thin solid films comprising at least one layer of organic material

Definitions

  • Multilayer film manufacturing method multilayer film, and multilayer film optical element
  • the present invention is obtained by disposing a laminated film obtained by alternately laminating two types of transparent thermoplastic resin films having different refractive indexes between two protective layers made of transparent thermoplastic resin.
  • the present invention relates to a method for producing a multilayer film obtained by pressing or rolling a laminate obtained in the thickness direction, a multilayer film obtained by the production method and the like, and a multilayer optical element obtained by using the multilayer film.
  • the refractive index is relatively lower than that of the support substrate on the support substrate.
  • a layer is formed by laminating a single layer or a plurality of layers so that the uppermost layer has the lowest refractive index, and the obtained laminate is deformed by a mechanical means such as a stretching method or a press method to form a film of the laminate.
  • a method for producing an antireflection film characterized by reducing the reflectance at the interface between air and a laminate by reducing the thickness Patent Document 1.
  • a laminated film capable of selectively reflecting light of a specific wavelength it is a laminated film having a regularly arranged structure and having a force of 20 or more layers, and having a wavelength of 100 to 100 : A peak with a reflectance of 30% or more for the light of LOOOOOnm is observed, and the ratio of peak half-value width (w) to peak wavelength (t) (wZ t) force 0.02 ⁇ w / t ⁇ 0. 3 (Patent Document 2) is known.
  • Patent Document 1 Japanese Patent Laid-Open No. 6-344487
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2004-314570
  • a laminate is formed by stacking a single layer film formed by extrusion molding or 2 to 5 layers of multilayer film formed by coextrusion on a supporting substrate.
  • the film thickness of the laminate is disturbed if a small amount of gas such as air remains between the layers of the laminate.
  • the adhesion between the layers of these laminates is inadequate, displacement (or slippage) occurs between the layers, resulting in non-uniform film thickness of each layer, and high reflection-type light interference color development. This is inconvenient when used for functional films such as molecular multilayer films or transmissive optical interference coloring polymer multilayer films.
  • the rolling reduction ratio of the multilayer film due to stretching [(thickness before squeezing, thickness after processing) thickness before Z-caloe] X 100 is considerably high, or the thickness of the laminate after pressing or rolling is several
  • the thickness is less than one hundred zm, it is difficult to form a thin film so that the thickness of each layer is almost uniform, especially when the reduction ratio of the multilayer film is 90% or more and after pressing or rolling.
  • the thickness of the laminated body is several hundred m or less, it is considerably difficult to form a thin film so that the thickness of each layer is almost uniform.
  • the laminated film disclosed in Patent Document 2 is obtained by sequentially biaxially stretching a sheet having a multi-interface structure discharged from a die or simultaneously stretching it in two directions by 2 to: LO times, and then performing a heat treatment. It is obtained.
  • Example 1 of Patent Document 2 after laminating with a feed block, it is supplied to a coat hanger die and formed into a sheet to obtain an unstretched laminated film of about 200 layers. It is described that a multilayer film was obtained.
  • the present invention has been made in view of the above problems, and two transparent thermoplastic resin films having different refractive indexes are alternately laminated between two protective layers made of a transparent thermoplastic resin.
  • a laminated body obtained by placing the laminated film is preliminarily pressure-bonded and thermocompressed in advance, and then pressed or rolled in the thickness direction, the multilayer film obtained by the manufacturing method, etc.
  • An object of the present invention is to provide a multilayer optical element obtained from a multilayer film or the like.
  • the present invention relates to the following Embodiments 1 to 3.
  • the present invention provides (1) a laminated film (C) in which two types of transparent thermoplastic resin films (A, B) having different refractive indexes are alternately laminated in the thickness direction.
  • thermocompression bonding is performed in a state where pressure within the same pressure condition range as the pre-compression is applied in the thickness direction from both outer sides of the laminate (E).
  • the present invention relates to a method for producing a multilayer film (hereinafter sometimes referred to as “Embodiment 1”).
  • the pre-bonding is performed at a pressure of 2500 Pa or more.
  • the pre-pressing is performed using a batch press or a rolling roller at 3000 Pa or more and half or less of the pressure during the pressing or rolling.
  • Preheating of the laminate (E) is started before or during the pre-bonding and remains between the laminated films (C) and between the laminated film (C) and the protective layer (D) by the pre-bonding.
  • the removal of gas is performed before reaching the temperature at which thermocompression bonding is possible.
  • thermoplastic resin films (A, B) are both amorphous resin
  • the center of the laminate (E) is Both types of thermoplastic resin 40-80 ° C higher than the glass transition temperature (Tg) of
  • the center of the laminate (E) is the two types of heat 50 ° C. higher than the lower glass transition temperature (Tg) of the plastic rosin, and 30 ° C. lower than the melting point (Tm) of the crystalline rosin from the temperature, or
  • the laminate (E) has a melting point (Tm) at the center of the two types of thermoplastic resins. 30-50 ° C lower temperature
  • thermoplastic resin films (A, B) The difference in refractive index between the two types of thermoplastic resin films (A, B) is 0.05 or more.
  • the laminated film (C) is a laminated film formed by co-extrusion so that two types of transparent thermoplastic resin films (A, B) having different refractive indexes are alternately laminated in the thickness direction ( C 1) or a laminated film (C 2) obtained by laminating a plurality of the laminated films (C 1) so as to be alternately laminated in the thickness direction.
  • each thermoplastic resin film (A, B) in the laminated film (C) before pre-bonding is in the range of 5 to: L00 m, and the total number of layers of the laminated film (C) is More than 10 layers.
  • the thickness of the two protective layers (D) in the laminate (E) before the pre-pressing is 40 to 80, respectively, and more than 0.04 times the thickness of the laminated film (C).
  • the glass transition temperature (Tg) of the resin used in the two types of thermoplastic resin films (A, B) and protective layer (D) in the laminate (E) is different from that of crystalline resin.
  • Tg glass transition temperature
  • crystalline rosin combination it is in the range of 20 to 150 ° C, or in the case of other combinations, 50 to 120
  • the laminated film (C) in the laminated body (E) is thinned to a thickness of 1Z10 and 1Z90 by pressing or rolling once.
  • a new protective layer (D) is newly provided on both outer side surfaces of the multilayer body obtained by thin-filming by pressing and further thinning by pressing is performed at least twice, or Lamination before pressing or rolling by combining multiple rolling rollers and rolling in multiple stages
  • the thickness of the laminated film (C) in the body (E) is thinned to 1Z20 to 1Z300.
  • the multi-layer body formed by thinning by one or more presses or one-stage or multi-stage rolling is further stretched by a tensile force, so that the laminate in the laminate (E) before pressing or rolling. Thin the film (C) to 1Z150 or 1Z2000.
  • the (0 pre-compression or GiO rolling is continuously performed by performing the (0 pre-compression, GO thermocompression, and GiOi step or multi-stage rolling using a plurality of rollers.
  • the (0 pre-compression, GO thermocompression, and GiOi stage or multi-stage rolling is performed using a plurality of roller means, and (iv) by stretching by tensile force, the (0 pre-compression or (iv) Stretching is performed continuously.
  • thermoplastic resin films (A, B) having a refractive index difference of 0.05 or more are alternately laminated in the thickness direction.
  • a laminate (E) formed by placing a laminated film (C) between two protective layers (D) made of a transparent thermoplastic resin was obtained by thin-filming by pressing or rolling.
  • the total thickness of the laminated film (Ct) part is 500 ⁇ ! It is an invention relating to a multilayer film in which the thickness tends to become thinner toward the center at -100 m and the multilayer arrangement of the multilayer film (Ct) part is not disturbed (hereinafter referred to as “Embodiment 2”) Is).
  • the laminated film (Ct) portion is formed by laminating 20 to 500 layers in the thickness direction.
  • the lamination accuracy ([(maximum layer thickness ⁇ minimum layer thickness) Z minimum layer thickness] X 100 (%)) in the laminated film (Ct) portion is 300% to 1500%.
  • the lamination thickness ratio (the ratio between the maximum value and the minimum value of the resin layers having different lamination directions) in the laminated film portion (Ct) is 25 or 25.
  • the present invention provides (21) a particulate multilayer optical element comprising a charged layer on both surfaces of the multilayer film according to any one of (16) to (20), A multilayer optical element is accommodated between a pair of transparent electrodes, and rotated or rotated by application to the transparent electrodes.
  • the invention relates to a multilayer optical element that constitutes a pixel of an image display device capable of displaying an image by using reflection or transmission of light of a specific color by being capable of movement control (hereinafter, referred to as “multilayer optical device”). Or “Embodiment 3”).
  • the “multilayer film optical element” of the third embodiment may further have the following aspects (22) or (25).
  • (22) Display one of red, green, blue, cyan, magenta, or yellow.
  • a non-light-absorbing and interference-type optical structural color body that reflects light of any one of the colors defined in (22) and transmits a complementary color for the color.
  • the maximum external dimension is in the range of 2 ⁇ m to 200 ⁇ m.
  • the outer shape is a plane, a cube, a convex lens, or a sphere.
  • the multilayer film (Et) obtained by the production method of the present invention includes a thin multilayer film including 10 layers or more, particularly 20 to 500 layers, and has a specific wavelength in the visible light region. It has excellent optical functions such as selectively and strongly reflecting the light.
  • the multilayer film (Et) of the present invention when used for an image display element for an image display sheet, it is thin and has a high reflectance, so that a high light utilization factor can prevent a decrease in contrast and a loss of light. Since it is kept to a minimum, a bright, high-contrast, reflective electron beam can be realized.
  • FIG. 1 is an optical micrograph of a cross section of the multilayer film thinned in Example 1.
  • FIG. 2 is an optical micrograph of a cross section of the multilayer film thinned in Example 6.
  • FIG. 3 is an optical micrograph of a cross section of the laminate that was thermocompression bonded in Example 7.
  • FIG. 4 is an optical micrograph of the cross section of the laminate that was thermocompression bonded in Example 8.
  • FIG. 5 is an optical micrograph of a cross section of a laminate that is thermocompression bonded in Comparative Example 2.
  • FIG. 6 is an optical micrograph of a cross section of a laminate that was thermocompression bonded in Comparative Example 3.
  • FIG. 7 is an optical micrograph of the cross section of the laminate that was thermocompression bonded in Comparative Example 4.
  • FIG. 8 is an optical micrograph of the cross section of the laminate that was thermocompression bonded in Comparative Example 5.
  • FIG. 9 Conceptual diagram of a device that can apply a voltage to electrodes existing on the inner surface of a spacer by arranging multilayer optical elements in silicone oil in the spacer. The best form to do
  • the laminated film (C) refers to a laminate in which two types of transparent thermoplastic resin films (A, B) are alternately laminated in the thickness direction. ) Means that a laminated film (C) is disposed between two protective layers (D).
  • the protective film (D) may be provided only on one outer surface of the laminated film (C), and the laminated body (E) t may be used.
  • the laminate (E) is thinned by the pressing or rolling into a multilayer film (Et).
  • the laminated film (C) part and the part corresponding to the protective layer (D) part constituting the laminated body (E) are thinned by the press or rolling, or laminated film (Ct) part by thinning and stretching, respectively.
  • Protective film (Dt) part is thinned by the press or rolling, or laminated film (Ct) part by thinning and stretching, respectively.
  • the protective layer (D) newly added to the structure thinned once (hereinafter sometimes referred to as a multilayer body) is the first after the pressing. It is integrated with the protective layer (D) used before pressing by thermocompression bonding to form the protective film (Dt).
  • a laminated film (C) in which two types of transparent thermoplastic resin films (A, B) having different refractive indexes are alternately laminated in the thickness direction is made of a transparent thermoplastic resin 2
  • thermocompression bonding is performed in a state where pressure within the same pressure condition range as the pre-compression is applied in the thickness direction from both outer sides of the laminate (E).
  • the invention relates to a method for producing a multilayer film.
  • a thin film is formed by forming a laminate (E) comprising a laminated film (C) and a protective layer (D), pre-compression bonding, thermocompression bonding, and pressing or rolling. , Consisting of processes.
  • the multilayer film (multilayer body) obtained from the thin film can be further stretched by a tensile force.
  • Laminated film (C), (2) Protective layer (D), and (3) Laminated body (E), and (4) Pre-compression, (5) Thermocompression, (6) Thin film formation, (7) stretching, and (8) multilayer film (Et) will be described.
  • thermoplastic resin used for the laminated film (C) and the protective layer (D) of the present invention will be described later, but two types of transparent thermoplastic resins different in refractive index from the laminated film (C).
  • Films (A, B) are arranged alternately in the thickness direction.
  • the laminated film (C) is preferably a laminated film (C1) formed by coextrusion so that the thermoplastic resin films (A, B) are alternately laminated in the thickness direction, or the laminated film (C 1) Is a laminated film (C2) in which a plurality of layers are laminated so as to be alternately laminated in the thickness direction.
  • the total number of layers of the laminated film (C) is preferably 10 or more, more preferably 20 to 500, from the viewpoint of optical properties.
  • the light reflection characteristics required for a multilayer film (Et) are two types of grease. Since it is determined by the difference in folding ratio, the thickness of each layer in the multilayer film, and the number of layers, the number of layers can be practically determined by the required design capability.
  • the two types of transparent thermoplastic resin films (A, B) used for the laminated film (C) preferably have a refractive index difference of 0.05 or more, more preferably 0.1 or more.
  • the refractive index difference is preferably 0.05 or more, and the refractive index difference is 0.05 or more.
  • a multilayer film obtained by rolling a thin film, and a high reflectance can be obtained even when the number of laminated layers is 500 or less.
  • the glass transition temperatures (Tg) of the above two types of resins are crystalline resin and amorphous resin.
  • the melt viscosity ratio of the two types of resins is preferably 1 to 6, particularly 1 to 3.
  • thermoplastic resin films (A, B) that do not dissolve each other in the processing conditions of coextrusion, pre-compression bonding and thermocompression bonding, and thin film.
  • A, B thermoplastic resin films
  • each layer of the laminated film (C) in the laminate (E) is not particularly limited, but thermocompression bonding, processability of the thin film, thickness of the multilayer film after thinning (or stretching), etc. Is considered to be in the range of 5 to: LOO / zm, and further 20 to 50 / ⁇ ⁇ .
  • Such a thermoplastic film can be laminated by arbitrarily laminating one obtained as a single layer or a multilayer film by extrusion molding or coextrusion molding to obtain a laminated film (C).
  • the total thickness of the laminate ( ⁇ ) is the sum of the thickness of the protective layer (D) described above and the thickness of the laminate film (C).
  • thermoplastic resin films ( ⁇ , ⁇ ) used in the present invention are appropriately selected in accordance with the performance required for the multilayer film (Et), and the amorphous resins and crystals ! / And misalignment of the functional resin can also be used.
  • a preferred combination is between non-crystalline coconut resins or crystalline rosin Considering the difference in refractive index and the combination of resins with poor compatibility, the combination of amorphous resin is more preferable.
  • thermoplastic resin for the laminated film (C) examples include the following: In the present invention, the resin is not limited to these resins.
  • amorphous resin polystyrene, polyvinyl chloride, ABS resin, AS resin, methyl polymethacrylate, polysylvinylidene, polycarbonate, modified polyphenylene ether, polysulfone, polyethersulfone, poly Examples include arylate, polyamideimide, polyetherimide, and polyimide.
  • crystalline resin examples include polyethylene, polypropylene, polymethylpentene, polybutyl alcohol, polyvinylidene fluoride, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyphenylene sulfide, and polyether ether ketone. Can be mentioned.
  • thermoplastic resins described above considering the difference in refractive index, melting point, glass transition temperature, melt viscosity ratio, etc., various combinations can be considered.
  • Preferred examples include polystyrene and polymethylmethacrylate-based resin.
  • polycarbonate and polymethylpentene are examples of polystyrene and polymethylmethacrylate-based resin.
  • the protective layer (D) is disposed on both outer side surfaces of the laminated film (C) and functions as a layer for protecting the laminated film (C) during preliminary pressure bonding, thermocompression bonding, and thin film bonding. Ie protective layer By providing (D), it is possible to remarkably reduce the disorder of the layer of the laminated film (C) when thinned by pressing or rolling, and to significantly increase the rolling reduction in thinning processing. Become.
  • the protective film (D) is provided on both outer sides of the laminated film (C), and the thin film is formed by pressing or rolling. Not only can the wrinkle processing be very easy, but also the rolling reduction can be increased to obtain a desired film thickness.
  • the protective layer (D) for protecting the laminated film (C) is preferably a resin that is equal to or slightly harder than the laminated film (C) for pre-compression and thermocompression bonding. Further, from the viewpoint of protecting the laminated film (C), each thickness of the protective layer (D) does not have a light interference function! /, More preferably about 40 ⁇ m or more, particularly preferably a thickness of about a certain degree. Is 40 to 800 ⁇ m, or more preferably 0.04 times or more, and particularly preferably 0.05 times or more of the thickness of the laminated film (C).
  • the thickness of the protective layer (D) does not have an optical interference function, it can be achieved by setting the thickness to a thickness.
  • the function as the layer (D) is more satisfactorily exhibited.
  • the thickness of the protective layer (D) is more preferably 40 ⁇ m or more, more preferably 100 ⁇ m or more. Also, even if the thickness of the protective layer (D) exceeds 800 m, improvement in its function cannot be expected, and there is little need for a thickness exceeding 800 ⁇ m from the economical aspect.
  • the glass transition temperature (Tg) has two types of thermoplastic resin films ( It is desirable to be the same as A and B). From the above viewpoint, the transparent thermoplastic resin used in the protective layer (D) can be appropriately selected from the two types of thermoplastic resin films (A, B) used.
  • the layer structure of the stack (E) can be DZAZBZ AZBZAZD.
  • new protective layers (D) are provided on both outer surfaces of the multilayer body obtained after one thin film forming, and the thin film is further stretched by pressing. It is also possible to do this.
  • the protective layer (D) provided on both outer sides of the multilayer body after the second time can use the same thermoplastic resin as that first provided on both outer sides of the laminated film (C). Is determined in consideration of the compression ratio and the like.
  • Pre-compression is a pressure that does not cause strain or displacement between the inner layers of the laminate (E) in the thickness direction from the outer side surfaces of the laminate (E) under the temperature conditions where the laminate (E) is not thermocompression bonded.
  • This is a process to remove the gas remaining between the laminated film (C) and between the laminated film (C) and the protective layer (D) by pre-pressing below the force, and in this way to the laminated body (E) etc.
  • the operation of applying force or pressure is sometimes referred to as pressurization or preload in the technical field or other technical fields.
  • the pre-bonding conditions are 2500 Pa or more in the thickness direction from a practical aspect and not more than half of the pressure of the press or rolling, preferably 2500 to 10,000 Pa, more preferably 250 0 to 8000 Pa, Especially preferred ⁇ is 3000-6000Pa.
  • the temperature of the laminate (E) in the pre-compression is effective at about room temperature (25 ° C.) as long as the thermocompression does not proceed.
  • the temperature of the layered product (E) during pre-bonding is preferably maintained below the glass transition temperature Tg of each of the two types of resin used from the viewpoint of preventing deformation.
  • the pre-compression time depends on the shape of the laminate (E) (its length, width, number of layers, etc.) and the material properties (hardness of the laminate film (C) and protective layer (D), etc.). I ca n’t decide However, there is no particular problem if a time slightly longer than the time required for removing the remaining gas is set.
  • thermocompression bonding a device capable of both precompression bonding and preheating is desirable.
  • thermocompression bonding in Embodiment 1 is that, when thin film is formed by pressing or rolling, deviation occurs between the laminated films (C) and between the laminated film (C) and the protective layer (D). This is to prevent disturbance between the layers.
  • thermocompression bonding the laminate (E) is preheated to a temperature at which thermocompression bonding can be performed, and both outer surface forces of the laminate (E) are applied with pressure within the same pressure condition range as that of the precompression bonding in the thickness direction.
  • the laminated body (E) is integrated by thermocompression bonding.
  • thermocompression bonding means that each resin layer is melted and polymerized by pressing and preheating at the interface between the laminated films (C) and between the laminated film (C) and the protective layer (D).
  • thermocompression bonding means that each resin layer is melted and polymerized by pressing and preheating at the interface between the laminated films (C) and between the laminated film (C) and the protective layer (D).
  • thermocompression Preheating for thermocompression can be started after pre-compression, but if the residual gas in the laminate (E) is removed before reaching the temperature at which thermocompression bonding is possible, the pre-compression or pre-compression can be performed. You may start preheating the laminate (E) during pre-crimping! / ⁇ .
  • the temperature at which the thermocompression bonding can be performed is preferably the following (i) or (iii), but the physical properties of the thermoplastic resin to be used and the laminate (E It may be difficult to make a uniform decision because it depends on the configuration of (), so it may be necessary to confirm by experiments assuming a thin film stack (E).
  • thermoplastic resin films (A, B) are both amorphous resin
  • the center of the laminate (E) is the glass transition of both of the two types of thermoplastic resins. 40-80 ° C higher than temperature (Tg)
  • thermoplastic resin films (A, B) is amorphous resin and the other is crystalline resin
  • the central part of the laminate (E) is 50 ° C. higher than the lower glass transition temperature (Tg) of the two types of thermoplastic resin, and the temperature of the crystalline resin is determined from the temperature. 30 ° C below the melting point (Tm)
  • the laminate (E) has a melting point (Tm) at the center of the two types of thermoplastic resins. 30-50 ° C lower temperature
  • the heat resistance can be maintained at a temperature equal to or higher than the lower limit of each temperature range. Without maintaining the layer structure.
  • the glass transition temperature (Tg) (° C.) is a midpoint glass transition temperature measured by the DSC method (differential scanning calorimetry, heating rate 10 ° C / min).
  • Tmg melting point
  • Tm melting point
  • Tm melting point
  • the temperature difference between the glass transition temperature (Tg) and the melting point (Tm) of typical crystalline plastics is about 175-210 ° C, so the fusing phenomenon does not occur in the temperature range 50-100 ° C higher than Tg. Generally does not occur.
  • the two types of thermoplastic resin films (A, B) are crystalline resin, fusion is performed at a temperature 30 to 50 ° C. lower than the melting point (Tm) of both of the two types of thermoplastic resins. The phenomenon generally does not occur.
  • thermocompression bonding As long as the pressure condition for thermocompression bonding is the same as that for pre-compression, the pre-compression pressure can be maintained as it is.
  • thermocompression bonding The range of pressure conditions varies depending on the physical properties of the thermoplastic resin used and the composition of the laminate (E), so it is difficult to determine uniformly, but pre-compression is performed at a higher pressure. In some cases, preheating to a temperature at which thermocompression bonding can be performed with the same pressure may cause distortion that impairs the optical function or displacement between layers. In some cases, it may be safer to set the upper pressure limit lower than when pre-bonding.
  • the preheating time depends on the combination of the resin used and the thickness of the laminate (E), but when the center temperature of the laminate (E) reaches a predetermined temperature and a press is used, it takes several minutes or more. In the case of rolling for about 1 to 30 minutes, a shorter time may be used.
  • a press for example, when the thickness of the layered product (E) is 1000 ⁇ m, about 20 minutes is preferable.
  • preheating means for preheating for thermocompression bonding there are no particular restrictions on the preheating means for preheating for thermocompression bonding, but examples include a hot plate, a hot press plate, a thermostatic bath, a non-contact infrared heater, and the like.
  • the thin film is a process in which the laminated film (C) after thermocompression bonding is thinned by pressing or rolling using a known method or the like.
  • the laminated film (C) can be thinned to a thickness of 1Z10 to 1Z90 by stretching by one press or rolling.
  • the thin film substrate of Embodiment 1 at least twice the operation of providing a new protective layer (D) on both outer side surfaces of the multilayer body obtained by thin film formation by the press and further performing the thin film formation by press.
  • a new protective layer (D) on both outer side surfaces of the multilayer body obtained by thin film formation by the press and further performing the thin film formation by press.
  • the press or rolling pressure be within the range of preheating temperature in thermocompression bonding.
  • the (0 pre-compression, GO thermocompression bonding, and (m) i-stage or multi-stage rolling using a plurality of rollers By performing the (0 pre-compression, GO thermocompression bonding, and (m) i-stage or multi-stage rolling using a plurality of rollers, the (0 pre-compression or GiO rolling can be performed continuously.
  • the stretching can be further performed by a tensile force of a chucking means or the like.
  • a tensile force of a chucking means or the like For example, (0 pre-compression, GO thermocompression bonding, and (m) i-stage or multi-stage rolling is performed using a plurality of one roller means, and Gv) is stretched by a tensile force such as a chucking means.
  • the (0 pre-compression or Gv) stretching can be performed continuously.
  • the stretch ratio can be controlled inline while confirming the color development.
  • stretching by a tensile force can be performed not by a continuous process but by a batch process. Stretching in the batch process may be performed once or may be performed a plurality of times. The stretching direction and the number of stretching can be freely selected as necessary. In addition, stretching in the batch process may be performed biaxially at the same time.
  • the multilayer body thinly formed by one or more presses or one-stage or multi-stage rolling is further stretched by a tensile force to obtain a laminated film (C) in the laminate (E) before pressing or rolling.
  • the thickness of the) portion can be reduced to 1Z150 to 1Z2000.
  • the multilayer film (Et) obtained by force is a multilayer film (Et) composed of two protective film (Dt) parts and a laminated film (Ct) part located between the two protective film (Dt). is there.
  • the ratio of the laminated film (C) used for thinning and the thickness of the thin film can be appropriately selected according to the use of the target multilayer film (Et).
  • the multilayer film (Et) obtained by the thin film is arranged in the thickness direction of 10 layers or more, especially 20-500 layers, and the total thickness of the multilayer film is 500 ⁇ ! It can be up to 500 ⁇ m.
  • the lamination thickness ratio in the laminated film (ratio between the maximum value and the minimum value of the resin layers with different lamination directions) is usually 1 to 5, but in the production method of the multilayer film (Et) of the present invention, it is 1 to 25. Can also be used sufficiently for applications such as color bodies.
  • the lamination accuracy in the laminated film ([(maximum layer thickness to minimum layer thickness) Z minimum layer thickness] X 100 (%)) is preferably smaller, but in the method for producing the multilayer film (Et) of the present invention, it is not 300%. It has functions such as coloring even with a stacking accuracy in the range of 1500%. It is also possible to obtain a multilayer film (Et) having a reflectance of 60% or more at the wavelength of red, blue, or green light.
  • the thickness of the multilayer film (Et) is reduced toward the center direction ( In particular, this tendency becomes more prominent when the thickness of the protective layer (D) is increased), and it is possible to obtain a layer in which the arrangement of each layer in the laminated film (Ct) portion is not disturbed.
  • a multilayer film (Et) has been known so far and is a new and useful multilayer film.
  • multilayer film (Et) In the multilayer film (Et) according to Embodiment 2, two or more types of transparent thermoplastic resin films (A, B) having a refractive index difference of 0.05 or more are alternately laminated in the thickness direction.
  • a multilayer film (Et) comprising two protective film (Dt) parts and a laminated film (Ct) part located between the two protective films (Dt), wherein the total thickness of the laminated film (Ct) part Is 500 ⁇ !
  • the multilayer film (Et) according to Embodiment 2 is characterized in that the thickness tends to become thinner toward the center direction at -100 m and the multilayer arrangement of the multilayer film (Ct) part is not disturbed.
  • the laminated film (C) described in Embodiment 1 in which two types of transparent thermoplastic resin films (A, B) having different refractive indexes are alternately laminated in the thickness direction is used as a transparent thermoplastic film.
  • portions corresponding to the laminated film (C) portion and the protective layer (D) portion constituting the laminated body (E) in Embodiment 1 are thinned by the pressing or rolling, respectively, and the laminated film in Embodiment 2 is used.
  • the laminated film (Ct) part and the protective film (Dt) part in Embodiment 2 are the materials used for the laminated film (C) part and protective layer (D) part described in Embodiment 1. It is the same.
  • thermoplastic resin films (A, B) with different refractive indexes between two protective layers (D), or a film in which these layers are laminated, are arranged alternately in the thickness direction by about 20 to 500 layers.
  • the total thickness of the laminated film (Ct) part is 500 ⁇ !
  • JP 2004-122764 A uses a feed block as a packaging material. After laminating the layers, a laminated film having a thickness of 129 layers and a thickness of 50 ⁇ m is disclosed using a square mixer.
  • two types of thermoplastic resin are used in a feed block. After joining the layers, it was supplied to the coat hanger die, formed into a sheet, then stretched longitudinally 3 times with preheating, and transversely stretched 3.5 times to obtain a film with a thickness of 18 / zm Is written.
  • the laminate (E) is stretched by tensile force, or the laminate (E) is stretched by pressing or rolling, and 20 to 500 layers are alternately arranged in the thickness direction.
  • the total thickness of the laminated film (Ct) part is 500 nm to 100 ⁇ m and the arrangement of each layer is not disturbed.
  • the laminate (E) is stretched by a tensile force and is laminated between the protective layers (D), and the thickness of the film tends to become thinner in the central direction. And there was no disturbance in the arrangement of each layer.
  • the thickness of the laminated film tends to be thinned in the central direction” between the protective layers (D) in the multilayer film (Et) of the present invention means that the thickness of the film is in the center. It is not required to be so strict as to be evenly thinned, so long as the tendency shown in the cross-sectional photograph of FIG.
  • the ratio of the laminated film (C) to be used in the thin film and the thin film is appropriately selected in accordance with the use of the multilayer film (Et) which is the target product.
  • the multilayer film (Et) obtained by the thin film of the present invention has 10 or more layers, particularly 20 to 500 layers arranged in the thickness direction, and the total thickness of the laminated film (Ct) part is 500 ⁇ m to 100 ⁇ m. Is possible.
  • the lamination thickness ratio in the laminated film (ratio between the maximum value and the minimum value of the resin layers with different lamination directions) is usually 1 to 5, but in the production method of the multilayer film (Et) of the present invention, it is 1 to 25. Can also be used sufficiently for applications such as color bodies.
  • the lamination accuracy ([(maximum layer thickness ⁇ minimum layer thickness) Z minimum layer thickness] X 100 (%))) in the laminated film is preferably small, but in the present invention, the lamination accuracy is 300% or more and 1500% or less. It has sufficient functions such as coloring.
  • the multilayer film (Et) When the multilayer film (Et) is used in a structure that develops a specific color, whether to develop red, green, blue, or the like depends on the thickness of each layer and the refractive index of each layer. Easy to design The strength of the multilayer film can be increased by increasing the number of layers of the multilayer film. Therefore, the thickness per layer of the layered product (E) and the reduction ratio in stretching by pressing or rolling may be arbitrarily selected according to such a design.
  • the multilayer film (Et) thus obtained can have a reflectance of 60% or more at light wavelengths such as red, blue, and green.
  • the multilayer optical element according to Embodiment 3 is a particulate multilayer optical element in which charged layers are provided on both surfaces of the multilayer film (Et) described in (15) to (19),
  • the film optical element is accommodated between a pair of transparent electrodes, and rotation or movement can be controlled by application to the transparent electrodes, so that an image can be displayed using reflection or transmission of light of a specific color.
  • the pixel of the image display apparatus which can be performed is comprised.
  • the multilayer optical element in which the charge layers are provided on both outer side surfaces of the multilayer film (Et) described in Embodiment 2 is excellent in light reflectivity, it is excellent as an image display element for an image display sheet. It has a function.
  • the multilayer optical element of the present invention can be obtained by arbitrarily designing the refractive index difference between the two types of thermoplastic resin and the thickness of each layer in the multilayer film, so that red, green, blue, cyan, magenta, Alternatively, the color development of yellow can be designed, and the color intensity can be increased by increasing the number of layers in the multilayer film. Therefore, the multilayer optical element formed using the multilayer film (Et) of the present invention is It is easy to display any one of red, green, blue, cyan, magenta, or yellow.
  • the multilayer optical element of the present invention can be a non-light-absorbing and interference-type optical element that reflects light of any one of the colors and transmits a complementary color to the color, and is an image display sheet.
  • a flat, cube, sphere, or convex lens shape (where the center of the convex lens is near the center) is preferred to have a maximum outer dimension of 2 ⁇ m to 200 m. (Including those that are formed in a planar shape) It is preferable to use.
  • this invention is not limited to a following example.
  • the glass transition temperature (Tg) (° C.) was measured by the DSC method (differential scanning calorimetry, heating rate 10 ° / min).
  • the melting point (Tm) was similarly measured by the DSC method (differential scanning calorimetry, ascending rate 10 ° C / min).
  • the reduction ratio is obtained from the following formula from the thickness before and after the processing.
  • the stacking accuracy is obtained from the following formula from the maximum layer thickness and the minimum layer thickness in the multilayer film. Definition of stacking accuracy: [(maximum layer thickness minimum layer thickness) Z minimum layer thickness] X 100 (%)
  • Polystyrene and polymethylmethallate resin were used as materials for the thermoplastic resin film.
  • a two-layer film having a thickness of about 38 ⁇ m was obtained from each thermoplastic resin.
  • the resulting two-layer film was laminated in layers so as to form 50 layers, and polystyrene (with the same resin as the polystyrene used for the thermoplastic resin film) having a thickness of 100 m on both outer layers was used as a protective layer. Arranged to obtain a laminate
  • the laminate was pre-pressed by applying a load of 25 ° C. and a load of 5600 Pa at a temperature of 25 ° C. for 30 seconds with a batch press to remove air remaining between the layers of the laminate.
  • the integrated laminate was pressed for the first time for 1 minute at a temperature of 160 ° C. and a pressure of 19.4 MPa using a batch press.
  • the multilayer body (thickness: 185 m) obtained in the first press is used for two protective layers (thickness: 185 m) each with a thickness of 400 ⁇ m.
  • the thickness is 985 m.
  • the multilayer body provided with a protective layer was pressed a second time under the same conditions as above to obtain a multilayer film having a thickness of 90 m.
  • the total thickness of the laminate was reduced to 2165 ⁇ m force 185 ⁇ m, the rolling reduction was 91.5%, and the first rolling reduced the thickness to 1Z11.7.
  • the thickness per layer decreased from about 38 m (average thickness) to about 3 m (average thickness), the rolling reduction was 92.1%, and the thickness was 1Z12.7.
  • the thickness of the multilayer body and the protective layer decreased to 985 ⁇ m force to 90 ⁇ m, the reduction ratio was 90.9%, and the second rolling reduced the thickness to 1Z10.9.
  • the thickness per layer of the laminated film part is reduced from about 3 m (average thickness) to about 130 nm (average thickness), the rolling reduction is 95.7%, and the thickness of the thin film is 1Z23. I was deceived.
  • the thickness per layer of the laminated film portion of the laminate was reduced from about 38 m (average thickness) to about 130 nm (average thickness), and was thinned to a thickness of 1Z292.
  • the lamination accuracy was 1000% or more, and the lamination thickness ratio was 20.
  • the reflected light of the obtained multilayer film has a peak at the blue wavelength, and the reflectance is 60% or more.
  • Example 2 the laminate obtained in Example 1 was used, the load in the pre-compression was set to 3 OOOPa, and the load in the pre-compression was maintained as it was in the thermocompression bonding. And thermocompression bonded.
  • thermocompression bonding After the thermocompression bonding, a multilayer film was obtained by thin film forming with a batch press.
  • Example 2 the total thickness of the laminate was reduced from 2267 ⁇ m force to 165 ⁇ m by the first press, the rolling reduction was 92.7%, and the thickness was reduced to 1Z13.7 by the first rolling. It was. At this time, for the laminated film part, the thickness per layer decreased from about 38 m (average thickness) to about 2 m (average thickness), the rolling reduction was 94.7%, and the thickness of 1Z19 Was When performing the second press, a protective layer having a thickness of 400 m was added on both sides.
  • the first of reduced total thickness 965 ⁇ m or et al 78 / zm [this protective layer has been added to the multi-layer body obtained in the press, at a reduction rate ⁇ or 91.9 0/0, 2 Rolling of the second round [Thickness of 1/12. 4]
  • the thickness per layer is reduced from about 2 m (average thickness) to about 160 nm (average thickness), the rolling reduction is 92%, and the thickness is reduced to 1/12. I was deceived.
  • Example 2 the cross-sectional structure of the multilayer film obtained after the second press was observed with a scanning electron microscope (SEM). It was confirmed that the thickness of the laminated film portion in the multilayer film obtained in Example 2 tended to be thinned in the direction of the center, and there was very little disturbance in the laminated arrangement of each layer.
  • SEM scanning electron microscope
  • Example 3 is the same as Example 1 except that the laminate obtained in Example 1 was used, the pre-compression load was set to 4500 Pa, and the pre-compression load was maintained as it was during thermocompression bonding. Thus, a multilayer film was manufactured.
  • Example 1 the cross-sectional structure of the multilayer film obtained after the second press was observed with a scanning electron microscope (SEM). It was confirmed that the thickness of the laminated film portion in the multilayer film obtained in Example 3 tended to become thin in the direction of the center, and that there was very little disturbance in the laminated arrangement of each layer.
  • SEM scanning electron microscope
  • Example 4 using the laminate obtained in Example 1, pre-crimping was conducted in the same manner as in Example 1 except that the preheating of the laminated film by the electric heater during preheating was set to 175 ° C. heat A multilayer film was obtained by pressure bonding and pressing.
  • Example 1 the cross-sectional structure of the multilayer film obtained after the second press was observed with a scanning electron microscope (SEM). It was confirmed that the thickness of the laminated film portion in the obtained multilayer film product tended to be thinned in the central direction, and that there was very little disturbance in the laminated arrangement of each layer.
  • SEM scanning electron microscope
  • the following laminate was continuously subjected to preliminary pressure bonding, thermocompression bonding, and rolling using a roller to obtain a multilayer film.
  • each layer has a thickness of about 20 ⁇ m, and each layer has a thickness of 30 layers.
  • a laminate having a thickness of 40 / zm (the same resin as the polystyrene used for the thermoplastic resin film) was disposed as a protective layer.
  • the laminate was pre-pressed by applying a load of 3000 Pa at a temperature of 25 ° C. for about 15 seconds using a roller to remove air remaining between the layers of the laminate.
  • a rolling roller (roll diameter: 55 mm, roller rotation speed: 4 mmZsec) that can control the pressure between the rollers and set the pitch interval within a range of 5% increase / decrease was used.
  • the laminate was rolled with a rolling roller at a temperature of 160 ° C. in a hot air oven.
  • thermoplastic resin film Polycarbonate and polymethylpentene were used as materials for the thermoplastic resin film.
  • a two-layer film having a thickness of about 25 ⁇ m was obtained from each thermoplastic resin.
  • the resulting two-layer film was laminated in layers of 80 layers, and 100 m thick polycarbonate (same as that used for the above-mentioned laminated film material) was further used as a protective layer on both outer sides. Arranged to obtain a laminate.
  • the laminated film was maintained for 30 seconds by applying a load of 5600 Pa at a temperature of 25 ° C. with a batch press to remove air remaining between the layers of the laminated film.
  • a batch-type press pressing was performed at a temperature of 210 ° C and a pressure of 19.4 MPa for 1 minute to obtain a multilayer body having a thickness of 194 m.
  • a protective layer with the thickness of 400 ⁇ m (same as the polycarbonate used for the first protective layer) is placed on both outer sides of the obtained multilayer body, and the same conditions as above (temperature and pressing pressure)
  • a second press was performed to obtain a multilayer film with a thickness of 90 m.
  • the total thickness of the laminate was reduced to 2200 ⁇ m force 194 ⁇ m, the reduction ratio was 91.2%, and the thickness was reduced to 1Z11.3 by the first rolling.
  • the second press reduces the thickness of the multilayer body and protective layer to 994 ⁇ m force to 151 ⁇ m and reduces The rate was 84.8%, which was further reduced to a thickness of 1Z6.6 by the second rolling.
  • the thinned laminated film decreased from about 2.3 m (average thickness) to about 644 nm (average thickness) per layer, and the reduction ratio was 72%. Furthermore, the film thickness was reduced to 1Z3.6.
  • the thickness of each layer of the laminated film is reduced from about 25 m (average thickness) to about 644 nm (average thickness), and the thickness is reduced to 1 / 38.8. It was done.
  • Figure 2 shows a cross-sectional photograph of the cross-sectional structure of the resulting multilayer film taken with a scanning electron microscope (SEM). It has been confirmed that the thickness of the laminated film tends to be thin in the central direction and the disorder of the laminated arrangement of each layer is extremely small.
  • each film is laminated with 26 layers each of 25 ⁇ m thickness, and both sides have 100 ⁇ m thick polystyrene (thermoplastic glass).
  • the same resin as the polystyrene used for the fat film was disposed as a protective layer to obtain a laminate.
  • the laminate was pre-pressed by using a batch type press at a temperature of 25 ° C. and maintaining a load of 3000 Pa for 4 seconds for 30 seconds to remove air remaining between the layers of the laminate. Maintaining a load of 3000 Pa in the pre-crimping, preheating the laminate from both sides with an electric heater and maintaining for 15 minutes after the center of the laminate reaches 160 ° C.
  • Each resin layer of the laminate The interface was integrated by thermocompression bonding.
  • Figure 3 shows the results of observation of the cross-sectional structure of the thermocompression-bonded laminate with a scanning electron microscope (SEM).
  • each layer was thermocompression bonded, and no turbulence or gas residue was observed between the layers.
  • films with a thickness of 25 ⁇ m are laminated alternately to 70 layers, and 300 ⁇ m thick polystyrene (thermoplastic glass) is formed on both outer layers.
  • polystyrene thermoplastic glass
  • the same resin as the polystyrene used for the fat film was disposed as a protective layer to obtain a laminate.
  • the laminate was pre-press-bonded with a batch press at a temperature of 25 ° C. and maintained at 30 ° C. for 30 seconds to remove air remaining between the layers of the laminate.
  • the laminate While maintaining the load of 5600 Pa in the pre-bonding, the laminate is preheated from both sides with an electric heater and maintained for 15 minutes after the center of the laminate reaches 160 ° C., and each resin layer of the laminate is maintained.
  • the interface was integrated by thermocompression bonding.
  • Fig. 4 shows the results of observation of the cross-sectional structure of the thermocompressed laminate with a scanning electron microscope (SEM).
  • each layer was thermocompression bonded, and no turbulence or gas residue was observed between the layers.
  • a multilayer film was produced by the first press in the same manner as described in Example 1 except that protective layers were not used on both outer side surfaces of the laminated film.
  • the cross-sectional structure of the obtained multilayer film was observed with an optical microscope or a scanning electron microscope (SEM).
  • SEM scanning electron microscope
  • Example 2 The two-layer film prepared in Example 1 was alternately laminated so as to form 24 layers to obtain a laminated film. Next, a laminate in which a polystyrene protective layer having a thickness of 100 m was provided only on one outer surface of the laminated film was prepared. (ii) Pre-compression bonding, thermocompression bonding
  • pre-compression pre-compression was performed with the press pressures in Comparative Examples 2, 3, and 4 being OP a, 170 Pa, and 1800 Pa at a temperature of 25 ° C., respectively.
  • OP a, 170 Pa, and 1800 Pa at a temperature of 25 ° C., respectively.
  • Each load in the pre-bonding is maintained, and both outer side forces are preheated by the electric heater and maintained for 20 minutes after the center of the laminate reaches 160 ° C.
  • the interface was integrated by thermocompression bonding.
  • Comparative Examples 2, 3, and 4 The cross sections of the laminates obtained in Comparative Examples 2, 3, and 4 were photographed with an optical microscope. The photographs are shown in FIGS. In Comparative Examples 2, 3, and 4, residual gas is observed between the layers of the laminate, and obvious disturbance is observed in a part of the layers of the laminate.
  • gas black portion
  • the gray portion existing between the 2nd to 3rd layers and the 10th to 11th layers is a portion where a thin crack occurs during the cross-section processing and the transparent epoxy resin used for the coating enters.
  • a laminate was obtained in the same manner as described in Comparative Example 5.
  • Figure 8 shows the thermocompression-bonded laminate. It is confirmed that the layer is disturbed in the laminated part on the side where the protective layer is not provided. Once a layer has been disturbed, it has been difficult to eliminate the disorder of the layer no matter what conditions are selected in subsequent pressing or rolling.
  • the following laminate was continuously subjected to preliminary pressure bonding, thermocompression bonding, rolling, and stretching to obtain a multilayer film.
  • each layer has a thickness of about 25 ⁇ m, and each layer is alternately laminated to form 70 layers.
  • a 300 ⁇ m-thick polystyrene (the same resin as the polystyrene used for the thermoplastic resin film) was placed as a protective layer on both outer layer sides of the film to obtain a laminate.
  • the laminate was pre-pressed by maintaining a load of 7200 Pa with a roller at a temperature of 25 ° C. for about 30 seconds to remove air remaining between the layers of the laminate.
  • the roller In the hot air oven, the roller is preheated under a load of 7200 Pa by pre-bonding with a roller, and the center of the laminate reaches 160 ° C and is maintained for 15 minutes. Were integrated by thermocompression bonding.
  • a rolling roller (roll diameter: 55 mm, roller rotation speed: 4 mmZsec) that can control the pressure between the rollers and set the pitch interval within a range of 5% increase / decrease was used. heat The laminate was rolled with a rolling roller at a temperature of 160 ° C. in a wind furnace.
  • the total thickness of the laminate was reduced from 2350 m to 106 m, the rolling reduction was 95.5%, and the thickness was reduced to 1Z22.2 by rolling.
  • the thickness of the laminated film portion is 1750.
  • the / z m force was reduced to 24.
  • the reduction ratio was 98.6%, and the film was thinned to a thickness of 1 / 71.4.
  • the multilayer body rolled by the rolling roller was biaxially stretched by a tensile force by a chucking means. Stretching conditions were 120 ° C and stretched at a pulling speed of lOmmZmin.By the above stretching, the total thickness of the multilayer body was reduced to 106 m force to 46 m, the rolling reduction was 56.6%, and the stretching was 1Z2.3 Stretched to thickness.
  • the thickness of the laminated film part is reduced from 24.5 m force to 8.8 m, the rolling reduction is 64.1%, and it is stretched to the thickness of 1Z2.8. It was.
  • the total thickness of the laminate was reduced to 2350 m force and 46 m, so that the reduction ratio was 98.0%, and the film thickness was reduced to 1Z51.1.
  • the thickness of the laminated film part in the laminated body was reduced to 1750 / zm force and 8.8 m, so the rolling reduction was 99.5%, and the thickness of the thin film was 19.5%. It was.
  • Fig. 9 shows that the silicone oil (which has almost the same specific gravity as the multilayer optical element) and the multilayer optical element are arranged in the spacer and are present on the inner surfaces facing each other.
  • This is a conceptual diagram of an image display device that can rotate the multilayer film by applying an applied voltage to the electrodes.
  • the size is considerably reduced.
  • Example 10 as a beaker scale experiment, an optical display element with an increased size was used.
  • the display pixel size was set to the actual product level, the display pixel size was lmm to 100 ⁇ m, and the distance between the electrodes was 0.3 to Lmm from the above lcm. Therefore, the applied voltage is about 1 ⁇ : LOVZcm.
  • the multilayer film of the present invention can be widely used for optical materials such as displays such as Nosocon, reflection films, and light interference coloring films, and the multilayer film optical element of the present invention can be used for electronic paper display particles (members). ).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Cette invention concerne un procédé de production de films multicouches consistant à soumettre un film stratifié, obtenu par disposition de deux types de films en résine thermoplastique transparente à indice de réfraction différent successivement dans le sens d’épaisseur entre deux couches protectrices, à un pressage ou laminage. Plus précisément, ce procédé consiste à disposer un film stratifié obtenu par laminage de deux types de films en résine thermoplastique transparente à indice de réfraction différent successivement dans le sens d’épaisseur entre deux couches protectrices composées d’une résine thermoplastique transparente pour former un stratifié, (i) à comprimer et préassembler le stratifié par application d’une pression dans le sens d’épaisseur telle que le film stratifié ne provoque pas une distorsion ou une déviation interlaminaire sur les deux surfaces extérieures du stratifié dans des conditions de température telles que le stratifié ne subit pas une soudure par thermocompression pour éliminer le gaz qui y demeure, (ii) à unifier le stratifié résultant à l’aide d’une soudure par thermocompression par préchauffage du stratifié à une température adéquate pour obtenir cette soudure et application d’une pression dans le sens d’épaisseur de même intensité que celle employée précédemment aux deux surfaces extérieures du stratifié, et (iii) à soumettre le stratifié obtenu à un pressage ou laminage pour former un mince film.
PCT/JP2006/319503 2005-09-29 2006-09-29 Procédé de production de films multicouches, films multicouches et éléments optiques de films multicouches Ceased WO2007037393A1 (fr)

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JP2021006900A (ja) * 2019-06-17 2021-01-21 アファンタマ アクチェンゲゼルシャフト ルミネッセントコンポーネント
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JPH06344487A (ja) * 1993-06-08 1994-12-20 Dainippon Printing Co Ltd 反射防止フィルムの製造方法
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