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WO2006048956A1 - Procédé servant à produire un film non étiré, procédé servant à produire une feuille de métal recouverte de résine et appareil servant à produire un film non étiré - Google Patents

Procédé servant à produire un film non étiré, procédé servant à produire une feuille de métal recouverte de résine et appareil servant à produire un film non étiré Download PDF

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Publication number
WO2006048956A1
WO2006048956A1 PCT/JP2005/008279 JP2005008279W WO2006048956A1 WO 2006048956 A1 WO2006048956 A1 WO 2006048956A1 JP 2005008279 W JP2005008279 W JP 2005008279W WO 2006048956 A1 WO2006048956 A1 WO 2006048956A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermoplastic resin
resin
producing
film
die
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/JP2005/008279
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Inazawa
Takuji Nakamura
Hiroshi Doi
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.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan 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 Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Publication of WO2006048956A1 publication Critical patent/WO2006048956A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces

Definitions

  • Non-stretched film manufacturing method resin-coated metal sheet manufacturing method, and non-stretched film manufacturing apparatus
  • the present invention relates to a method for producing an unstretched film made of thermoplastic resin, a method for producing a fat-coated metal sheet coated with a thermoplastic resin, and an apparatus for producing an unstretched film made of thermoplastic resin. About.
  • a film made of a thermoplastic resin an unstretched film used by winding a resin heated and melted in an extruder from a T-die and extruding it onto a casting roll and winding it as a coil as it is, A uniaxially stretched film formed by stretching in the longitudinal direction after being extruded onto a casting roll, or a biaxially stretched film formed by stretching in the longitudinal direction and the width direction is formed.
  • the film discharged from the T-die and extruded onto the casting roll is solidified on the casting roll at both ends thicker than the center as a characteristic of the high-viscosity molten resin.
  • both ends are cut and removed in order to obtain a film having a certain thickness in the width direction.
  • the thickness of the cut and removed! Is not wasted because the part of the resin is heated and melted again in the extruder as a raw material for the film.
  • the thick parts that have been cut and removed can be used as raw materials for the film again. It becomes a bottleneck for improvement.
  • Patent Document 2 A method described in Patent Document 2 has been proposed as a method for reducing the economic loss of film trimming waste that cannot be reused. This method relates to a film having a high quality requirement, such as an electric insulation film that also has a biaxially stretched polypropylene film force used in capacitor production.
  • Propylene polymer B is heated and melted in the first extruder, When propylene polymer A is heated and melted and extruded together from the flat sheet die in the second extruder, propylene polymer A is supplied on both sides of propylene polymer B, extruded, biaxially stretched, and then on both sides of propylene polymer B By cutting and removing the propylene polymer A, the propylene polymer B, which has high quality requirements, is used as effectively as possible to eliminate waste as film trimming.
  • the characteristics of propylene polymer B used are set to match those of propylene polymer A with respect to the characteristics of propylene polymer B such as molecular weight, residual ash, melt flow index, and melting point. Therefore, the application is limited and it cannot be applied to film formation of various general-purpose thermoplastic resins.
  • Patent Document 1 JP 2002-127099
  • Patent Document 2 Japanese Patent Laid-Open No. 08-336884
  • the present invention relates to a method for producing an unstretched film made of a thermoplastic resin produced in a small variety and a variety, and a method for producing a resin-coated metal sheet coated with a thermoplastic resin produced in a small variety It is an object of the present invention to provide a method and a method for producing a non-stretched film made of thermoplastic resin produced in a small amount and various varieties with a high yield.
  • the method for producing an unstretched film of the present invention that solves the above-mentioned problems is a thermoplastic resin A intended to be formed as an unstretched film and another thermoplastic resin other than the thermoplastic resin A.
  • Fat B is heated and melted separately and introduced to both ends of the T-die for extrusion.
  • the thermoplastic resin B is discharged so that the thermoplastic resin B coexists on both sides of the plastic resin A and extruded onto the casting roll, and the thermoplastic resin B coexists on both sides of the thermoplastic resin A.
  • the thermoplastic resin portion is cut and removed, and the method for producing an unstretched film is characterized in that the thermoplastic resin A is used as the thermoplastic resin.
  • It is a method for producing an unstretched film, characterized in that it is discharged so as to cover fat B and extruded onto a casting roll (Claim 1).
  • thermoplastic resin A and the another thermoplastic resin B are heated and melted in separate extruders, respectively, and then pressed.
  • the molten resin is supplied to the molten resin supply pipe connected to the machine, and the major axis is parallel to the flow direction of the molten resin on both sides of the lower part of the pipe supplying the thermoplastic resin A.
  • the end of the pipe for supplying the thermoplastic resin B to the holes formed on both sides of the hole is formed in the hole having a short axis perpendicular to the flow direction of the molten resin.
  • thermoplastic resin A and the thermoplastic resin B which are heated and melted, to a continuous feed block, and then widening with a mold connected to the feed block at The die lip force of the T-die for extrusion with the thermoplastic resin B coexisting on both sides of A Characterized that the (claim 2) to manufacture how unstretched film comprising extruding onto the catcher Sting rolls, also
  • thermoplastic resin B the viscosity at the time of heating and melting is higher than that of the thermoplastic resin A. Characterized by the use of fat (claim 3), and
  • thermoplastic resin A and the thermoplastic resin B are also discharged with the T-die force for extrusion,
  • the non-stretched film is formed on the unstretched film so as to have only a portion inevitably thicker than the thickness of the thermoplastic resin A (Claim 4).
  • a colored thermoplastic resin is used (Claim 5).
  • the method for producing a resin-coated metal sheet according to the present invention separately heats a thermoplastic resin A for the purpose of laminating and coating a metal sheet and another thermoplastic resin B other than the thermoplastic resin. It is melted and guided to both ends of the T-die, and is coexisted on both sides of the thermoplastic resin cocoon that has been heated and melted, and the width of the thermoplastic resin A part is larger than the width of the metal plate.
  • thermoplastic resin A After being discharged and extruded onto the metal plate, only a portion of the thermoplastic resin A is a resin-coated metal plate laminated and coated on the metal plate, and then both ends of the metal plate are In the manufacturing method of a resin-coated metal sheet characterized by cutting and removing the resin portion protruding outside, the thermoplastic resin B is coated with the thermoplastic resin B.
  • a resin coated metal sheet characterized in that it is discharged onto a casting roll (Claim 6),
  • thermoplastic resin B the viscosity at the time of heating and melting is higher than that of the thermoplastic resin A. Characterized by the use of fat (claim 7), and
  • thermoplastic resin A and the thermoplastic resin B are discharged also with the T-die force for extrusion,
  • the thermoplastic resin B coexisting on both sides of the thermoplastic resin A is formed on the metal plate so as to be only a portion inevitably thicker than the thickness of the thermoplastic resin A.
  • the unstretched film production apparatus of the present invention includes an extruder (A1) for heating and melting a thermoplastic resin A for the purpose of forming a film as an unstretched film, and the thermoplastic film Extruder (B1) that heats and melts another thermoplastic resin B other than fat A, a molten resin supply pipe (A2) connected to the extruder (A1), and an extruder (Bl)
  • the molten resin supply pipe (B2) connected to the pipe and the lower side of the molten resin supply pipe (A2) are drilled on both sides of the molten resin supply pipe (B2).
  • a feed block consisting of two holes B3a and B3b, and a die and a die lip connected to the mould.
  • the cross-sectional shape of the holes B3a and B3b is parallel to the flow direction of the molten resin.
  • the apparatus for producing an unstretched film is characterized in that the minor axis has an elliptical shape perpendicular to the flow direction of the molten resin.
  • FIG. 1 is a schematic view showing a state in which a resin film is laminated on a metal plate.
  • FIG. 2 is a cross-sectional view of an unstretched film produced using the method for producing an unstretched film of the present invention.
  • FIG. 3 is a schematic view showing a method for producing an unstretched film of the present invention.
  • FIG. 4 is a schematic view showing a state of a thermoplastic resin just before being extruded onto a T-die and a state where the film is formed on a film.
  • FIG. 5 is a schematic view showing a state of a thermoplastic resin just before being extruded onto a T-die and a state where a film is formed on a film.
  • FIG. 6 is a schematic view showing a state of a thermoplastic resin just before being extruded onto a T-die and a state where a film is formed on a film.
  • FIG. 7 is a schematic view showing a state of a thermoplastic resin just before being extruded onto a T die of the present invention and a state where a film is formed on a film.
  • FIG. 8 is a schematic plan view showing a method for producing a resin-coated metal sheet according to the present invention.
  • 1 is a feed block
  • 2 is a T die
  • 3 is a die lip
  • 4 is a casting (cooling) roll
  • 5 is a lap
  • 6 is a mould
  • 10 is no Stretched film production equipment, 15 cutting means, 20 unstretched film, 30 metal plate, 40 coater roll, 50 auxiliary roll, 60 resin coated metal plate
  • a and B Is the thermoplastic resin
  • A1 is the extruder
  • A2 is the pipe for supplying molten resin
  • A2R is the connection between the pipe for supplying molten resin and the T die
  • B1 is the extruder
  • B2 is B3a and B3b are holes for the molten resin supply pipe, respectively.
  • the non-stretched film manufactured using the manufacturing method of the present invention is intended to produce a small variety of films having different rosin compositions in small quantities using a small number of manufacturing apparatuses.
  • the thermoplastic resin A formed into the desired unstretched film is a low-density polyethylene, which is a 1-alkene copolymer resin having 2 to 8 carbon atoms.
  • Polyolefin resin consisting of 2 or more types, polyamide resin such as 6 nylon, 6, 6 nylon, 6, 10 nylon, terephthalic acid, isophthalic acid, orthophthalic acid, P-j8-oxyethoxybenzoic acid, Naphthalene 2,6 dicarboxylic acid, diphenoxy shetane-4,4-dicarboxylic acid, dibasic aromatic dicarboxylic acid such as 5 sodium sulfoisophthalic acid, alicyclic dicarboxylic acid such as hexahydroterephthalic acid, cyclohexanedicarboxylic acid, Aliphatic dica such as adipic acid, sebacic acid, dimer acid Boronic acid, trimellitic acid, pyromellitic acid, hemilimit acid, 1, 1, 2, 2-ethanetetracarboxylic acid, 1, 1,2-ethane tricarboxylic acid, 1, 3, 5 pentanetricarboxylic acid, 1 , 2, 3, 4 Cyclopent
  • the target thermoplastic resin B is different from the target thermoplastic resin A.
  • the target thermoplastic resin A and the other thermoplastic resin B at both ends are made of T-die 2
  • the coating roll 40 that is also discharged from the casting roll that also serves as a castor puffer roll, it may come into contact with the auxiliary roll 50 or the like.
  • the coating roll 40 and the auxiliary roll 50 are made of a material that does not stick to the target thermoplastic resin A that has been heated and melted. Depending on the type of resin used, another thermoplastic resin B that has been heated and melted may adhere to these coater rolls 40 and auxiliary rolls 50 and wind up, making it impossible to continuously laminate. Therefore, as will be described later, in the present invention, as shown in the cross section of the resin film to be formed in FIG. 2, another thermoplastic resin B at both ends of the target thermoplastic resin A is coated with a coating roll. Cover another thermoplastic resin B with thermoplastic resin A so that it does not come into direct contact with 40 or the auxiliary roll 50.
  • thermoplastic resin having a higher viscosity at the time of heating and melting than the thermoplastic resin A as the other thermoplastic resin B.
  • a desired thermoplastic resin A from the above resin and a thermoplastic resin B different from the desired thermoplastic resin A coexisting at both ends can be used in combination.
  • FIG. 3 is a schematic view of the unstretched film production apparatus 10 of the present invention.
  • the desired thermoplastic resin A is heated and melted by the extruder A1, and is supplied to the feed block 1 via the pipe A2 for supplying the molten thermoplastic resin of the desired thermoplastic resin A connected to the extruder A1.
  • thermoplastic resin B that coexists on both ends of the thermoplastic resin A is melted by heating in the extruder B1, connected to the extruder B1, and melted in the middle of the two thermoplastic resins B branched Supplied to feed block 1 via the tube B2 for supplying grease.
  • the feed block 1 is penetrated by a pipe A2 for supplying molten resin A of thermoplastic resin A, and is connected to the T-die 2 at the lowermost part. Further, holes B3a and B3b are formed on both sides of the lower part of the pipe A2 for supplying the molten resin A of the thermoplastic resin A in the feed block 1, and the thermoplastic resin is provided in the holes B3a and B3b.
  • Pipes B2 for supplying the molten resin of fat B are connected through the feed block 1 respectively.
  • thermoplastic resin A heated and melted by the extruder A1 is supplied to the feed block 1 via the molten resin supply pipe A2, and is extruded toward the T die 2 connected to the lowermost part thereof.
  • the thermoplastic resin B heated and melted in the extruder B1 is supplied to the feed block 1 through the molten resin supply pipe B2, and is formed in both sides of the lower part of the molten resin supply pipe A2.
  • B3a and hole B3b are extruded into the molten resin supply pipe A2 and thermoplastic resin A Both ends of the thermoplastic coagulant B come to coexist.
  • thermoplastic resin A is formed as an unstretched film 20 in which the thermoplastic resin B having a thickness larger than that of the thermoplastic resin A coexists on both ends of the thermoplastic resin A.
  • the molten resin supply tube A2 and the molten resin supply tube B2 are respectively circular cross-section tubes
  • the thermoplastic resin B is located at both ends of the thermoplastic resin A according to the viscosity difference between the thermoplastic resin A and the thermoplastic resin B. Coexist with various cross-sectional shapes.
  • Fig. 4 to Fig. 6 show that the molten resin is fed through the hole B3a and the hole B3b drilled on both sides of the lower part of the molten resin supply pipe A2 and the molten resin supply pipe A2 in the feed block 1.
  • thermoplastic resin A and thermoplastic resin B are schematic diagram showing the state of thermoplastic resin A and thermoplastic resin B just before being extruded to 2, and the state in which the film was discharged from T-die 2 and formed into an unstretched film.
  • thermoplastic resin B When the melt viscosity of the thermoplastic resin B different from the melt viscosity of the desired thermoplastic resin A is extremely low, the thermoplastic resin B is attached to both ends of the thermoplastic resin A as shown in FIG. In this state, when it is widened with the mold 6 and discharged from the die lip 3 of the T die 2, as shown in the lower part of FIG. So-called wrap portions 5 in which the thermoplastic resin B enters the upper and lower ends are formed.
  • thermoplastic resin B When the melt viscosity of another thermoplastic resin B is higher than the melt viscosity of the desired thermoplastic resin A, the thermoplastic resin B is located at both ends of the thermoplastic resin A at the top of FIG. In this state, when expanded by the mold 6 and discharged from the die lip 3 of the T die 2, the upper and lower ends of the end portion of the thermoplastic resin B as shown in the lower part of FIG. The wrap part 5 in which the thermoplastic resin A enters is formed.
  • wrap portions 5 are portions where thermoplastic resin A and thermoplastic resin B overlap.
  • the lapping part 5 is large, the removal part increases and the yield of the desired thermoplastic resin A decreases. Become. Therefore, it is necessary to select a combination of thermoplastic resin A and thermoplastic resin B so that the wrap portion of thermoplastic resin A and thermoplastic resin B is minimized. Therefore, in practice, the thermoplastic resin B suitable for the thermoplastic resin A is selected.
  • the equipment required for film formation such as casting rolls, coating rolls, and auxiliary rolls, is made of a material suitable for the desired thermoplastic resin A. When the resin B is heated and melted, it adheres to each of these rolls and wraps around it, making continuous film formation impossible.
  • thermoplastic resin B a resin having a melt viscosity higher than the melt viscosity of the desired thermoplastic resin A is used as another thermoplastic resin B.
  • the lower part of the thermoplastic resin B shown in the lower part of the thermoplastic resin B is inserted into the upper and lower ends of the thermoplastic resin B.
  • thermoplastic resin having a melt viscosity higher than that of the desired thermoplastic resin A is used as another thermoplastic resin B, and the feed block 1 shown in FIG. Tube for supplying molten resin A
  • thermoplastic resin on both sides of A2 B for molten resin B 2 for supplying pipe B2 joins the cross-sectional shape of holes B3a and B3b, with the long axis of the molten resin
  • the hole B3a and The cross-sectional shape of the hole B3b is an elliptical shape in which the long axis is parallel to the flow direction of the molten resin and the short axis is perpendicular to the flow direction of the molten resin.
  • pipe A2 for supplying molten resin, pipe B2 for supplying molten resin, feed block 1 and T die 2 mould 6 Provide a heater and temperature sensor on the side, adjust the heating temperature using temperature adjusting means, heat thermoplastic resin B to high temperature, heat thermoplastic resin A to low temperature, By making the melt viscosity of the thermoplastic resin B when passing through the die higher than the melt viscosity of the thermoplastic resin A, the coating state can be adjusted.
  • thermoplastic resin B containing a colored pigment and coloring it.
  • the thermoplastic resin A is a colored resin
  • the transparent resin can be used as a transparent resin without the ability to contain a colored pigment having a color different from the color of the thermoplastic resin A or the pigment in the thermoplastic resin B. I prefer to use it.
  • FIG. 8 shows a die lip 3 of a T die 1 on a metal plate 30 that continuously proceeds from top to bottom in the drawing.
  • FIG. 3 is a schematic plan view showing a case where the thermoplastic resin B is extruded so that the thermoplastic resin B coexists on both ends of the thermoplastic resin A and is laminated and viewed from above the metal plate.
  • a T-die having a discharge width of the die lip 3 larger than the width of the metal plate 30 is used as the T-die 1.
  • thermoplastic resin A + B coated with the thermoplastic resin A which is inevitably thicker than the thermoplastic resin A, is formed on both sides of the thermoplastic resin A.
  • the metal plate 30 is laminated and coated by discharging onto the metal plate 30 such that the width of the plastic resin A portion is larger than the width of the metal plate 30.
  • the notched part in the figure shows the part where the metal plate 30 is laminated and coated with the thermoplastic resin A.
  • the metal plate 30 is laminated and coated only with the thermoplastic resin A portion to form a resin-coated metal plate 60, and then the thermoplastic resin (A + B) and the thermoplastic resin A metal plate 30.
  • the part that protrudes outside both ends is cut and removed using cutting means 15 such as a cutter.
  • cutting means 15 such as a cutter.
  • the entire width of the metal plate 30 is laminated and coated with only the thermoplastic resin A for uniform thickness.
  • the target thermoplastic resin A is almost lost.
  • a resin-coated metal sheet can be produced without any problem.
  • thermoplastic resin B coexists on both ends of the target thermoplastic resin A of a single layer.
  • Multi-layer thermoplasticity using a multi-fold method Also in the production method of the resin, the technology of the present invention is applied, and a plurality of target thermoplastic resins A are separately heated and melted, and another thermoplastic resin B immediately before widening with each manifold. Is supplied to each multi-fold so that another thermoplastic resin B is juxtaposed on both ends of each thermoplastic resin A. After merging with, the die lip force of the T die is discharged onto a casting roll to form a multi-layer unstretched film, and then the portion of the thermoplastic resin B coated with the thermoplastic resin A group is cut. It is also possible to remove it.
  • Thermoplastic resin intended to form an unstretched film Polyester resin as A
  • thermoplastic resin B that coexists on both ends of thermoplastic resin A : 145 ° C
  • addition of 25% by weight of TiO as a coloring component was used at 200 ° C using extruder B1
  • thermoplastic resin A heated and melted from the extruder A1 is heated to 260 ° C with an adjacent heater, passed through one molten resin supply tube A2, and the thermoplastic resin heated and melted from the extruder B1.
  • the fat B was supplied to the feed block 1 through two pipes B2 for supplying molten resin each heated to 200 ° C. by adjacent heaters.
  • Pipe A2 for supplying molten resin passes through the center of feed block 1, and pipe B2 for supplying molten resin is formed on both sides of the lower part at an angle of 50 ° with respect to the direction of supplying resin to pipe A2.
  • thermoplastic resin B As shown in FIG. 2 is coated with the thermoplastic resin, and the thermoplastic resin B is used as an auxiliary roll. It was possible to form a film without sticking to and winding it.
  • the wrap part 5 of the thermoplastic resin B coated with A was cut and removed with a cutter, and wound around a coiler as a non-stretched resin film having a width of 78 cm, which only the thermoplastic resin A was capable of.
  • the method for producing an unstretched film of the present invention is a method for producing an unstretched film in which a thermoplastic resin is heated and melted, discharged from a T-die for extrusion, and extruded onto a casting roll.
  • Thermoplastic resin A for the purpose of forming an unstretched film and another thermoplastic resin B other than the thermoplastic resin are separately heated and melted and led to both ends of the T-die for extrusion. Discharge so that another thermoplastic resin B is present on both sides of the heat-melted thermoplastic resin A and extrude it onto the casting roll, and the desired thermoplastic resin B has thermoplastic resin B on both sides.
  • thermoplastic resin A When a non-stretched film is formed, the viscosity of the thermoplastic resin A is high so that it has a high viscosity when heated and melted. Therefore, it is possible to continuously form a film without causing the high-viscosity thermoplastic resin B to contact and adhere to the auxiliary roll, and after extruding onto the casting roll,
  • the target thermoplastic resin that is inevitably formed thicker than the A part
  • the target thermoplastic resin A covered with the target thermoplastic resin B part is cut and removed, so the target thermoplastic resin Since the removal amount of rosin A is small, an unstretched film made of thermoplastic resin intended to produce a variety of varieties of varieties of rosin composition in small quantities can be formed on adhesive film. It can be manufactured at a high yield without causing trouble.
  • the force of the conventional line speed of 50 mZm According to the present invention, it has become possible to manufacture at a high speed of 150 to 200 mZ.
  • the method for producing a resin-coated metal sheet according to the present invention is a resin-coated metal sheet in which a thermoplastic resin is heated and melted and discharged from a T die die for extrusion and extruded onto the metal sheet to be laminated.
  • the thermoplastic resin A intended to be laminated and coated on a metal plate and another thermoplastic resin B other than the thermoplastic resin A are separately heated and melted and extruded.
  • discharge it so that it is aligned on both sides of the target thermoplastic resin A that has been heated and melted, and the width of the thermoplastic resin part is greater than the width of the metal plate.
  • thermoplastic resin A When a resin-coated metal sheet is formed by extruding it onto a metal plate and only the portion of the desired thermoplastic resin A is laminated and coated on the metal sheet, the viscosity of the target thermoplastic resin A when heated and melted is reduced. Discharge to cover another thermoplastic resin B with high melt tension and push onto casting roll As a result, the high-viscosity thermoplastic resin B does not come into contact with and adhere to the auxiliary roll, and can be continuously extruded and coated on a metal plate at a high speed, and it can be extruded onto a casting roll. After that, the target thermoplastic resin protruding from both ends of the metal plate is inevitably thicker than the part A. The target thermoplastic resin B covered with the target thermoplastic resin B is cut. Since the entire surface of the metal plate is coated with a small removal amount of the desired thermoplastic resin A, the resin-coated metal plate can be manufactured with almost no loss of the desired thermoplastic resin A. can do.
  • the unstretched film production apparatus of the present invention includes an extruder (A1) for heating and melting the thermoplastic resin A for the purpose of forming a film as an unstretched film, and the thermoplastic resin other than the thermoplastic resin.
  • Another extruder (B1) that heats and melts another thermoplastic resin B and was connected to the extruder (A1). Drilled on both sides of the lower part of the molten resin supply tube (A2), the molten resin supply tube (B2) connected to the extruder (B1), and the molten resin supply tube (A2).
  • a feed block composed of two holes B3a and B3b connected to a molten resin supply pipe (B2), a mould and a die lip connected to the mould.
  • the cross-sectional shape of the holes B3a and B3b is a minor axis in which the major axis is parallel to the flow direction of the molten resin.
  • thermoplastic resin B coexists on both sides of the target thermoplastic resin A
  • it can be coated on the metal plate at a high speed. Since the thermoplastic resin B part, which is inevitably thicker than the target thermoplastic resin A part, is cut and removed, the removal amount of the desired thermoplastic resin A is small. It is possible to produce non-stretched films made of thermoplastic resin for the purpose of producing a variety of films with different composition of the resin in small quantities with high yield without causing problems such as adhesion. it can.

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  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Procédé servant à produire un film non étiré en résine thermoplastique ; et appareil servant à produire un film non étiré en résine thermoplastique. Le procédé pour la production d'un film non étiré comprend de chauffer/faire fondre séparément une résine thermoplastique (A) à mettre sous la forme d'un film non étiré et une résine thermoplastique (B) différente de la résine thermoplastique (A), d'introduire les masses fondues dans les deux parties latérales d'une filière en T pour extrusion, de les extruder côte à côte de façon à ce que la résine thermoplastique (B) fondue thermiquement soit disposée sur les deux bords de la résine thermoplastique (A) fondue thermiquement, de mouler le produit d'extrusion sur un rouleau lamineur pour former un film non étiré dans lequel la résine thermoplastique (B) est disposée sur les deux bords de la résine thermoplastique (A) et de couper ensuite les parties où la résine thermoplastique (B) est présente. Dans ce procédé, les masses fondues sont extrudées de façon à ce que la résine thermoplastique (B) soit recouverte de la résine thermoplastique (A) et à ce que le produit d'extrusion soit moulé sur le rouleau lamineur pour former un film non étiré. Après cela, les parties où la résine thermoplastique (B) recouverte de la résine thermoplastique (A) est présente sont coupées pour obtenir le film non étiré cible, lequel est constitué seulement de la résine thermoplastique (A).
PCT/JP2005/008279 2004-11-04 2005-05-02 Procédé servant à produire un film non étiré, procédé servant à produire une feuille de métal recouverte de résine et appareil servant à produire un film non étiré Ceased WO2006048956A1 (fr)

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JP2004-320868 2004-11-04
JP2004320868A JP2006130744A (ja) 2004-11-04 2004-11-04 無延伸フィルムの製造方法、樹脂被覆金属板の製造方法、および無延伸フィルムの製造装置

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EP3508322A4 (fr) * 2016-09-02 2020-05-13 The Japan Steel Works, Ltd. Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille

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JP5684190B2 (ja) * 2012-04-18 2015-03-11 株式会社日本製鋼所 フィルム製造方法
JP5756552B1 (ja) * 2014-07-09 2015-07-29 株式会社日本製鋼所 フィルム製造方法及びフィルム製造装置
JP6917503B1 (ja) * 2020-06-16 2021-08-11 日東電工株式会社 押出成形装置、フィルムの製造システム、および、フィルムの製造方法
CN111976165A (zh) * 2020-07-01 2020-11-24 赫兰霞 一种热塑性树脂胶片加工装置

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EP3508322A4 (fr) * 2016-09-02 2020-05-13 The Japan Steel Works, Ltd. Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille
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