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WO2023078921A1 - Élément chauffant en matériau céramique - Google Patents

Élément chauffant en matériau céramique Download PDF

Info

Publication number
WO2023078921A1
WO2023078921A1 PCT/EP2022/080540 EP2022080540W WO2023078921A1 WO 2023078921 A1 WO2023078921 A1 WO 2023078921A1 EP 2022080540 W EP2022080540 W EP 2022080540W WO 2023078921 A1 WO2023078921 A1 WO 2023078921A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
web
material web
sealing
heating element
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/EP2022/080540
Other languages
German (de)
English (en)
Inventor
Reiner Paul
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.)
GEA Food Solutions Germany GmbH
Original Assignee
GEA Food Solutions Germany GmbH
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 GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Priority to EP22813912.7A priority Critical patent/EP4426545A1/fr
Publication of WO2023078921A1 publication Critical patent/WO2023078921A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/735—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/91421—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 joining tools
    • B29C66/91423—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 joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B29B2013/027—Obtaining a temperature gradient over the surface of films or tubes
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0266—Local curing
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B29C66/91213—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws and measuring the electrical resistance of a resistive element belonging to said welding jaws, said element being, e.g. a thermistor
    • 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
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/02—Ceramics
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/08—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure
    • B65B47/10—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure by vacuum

Definitions

  • the present invention relates to a preheating, a sealing or a forming tool of a packaging machine with a heating element for heating the packaging material, in particular a monoplastic film, with a large number of ceramic heating modules. Furthermore, the present invention relates to the packaging machine itself and a method for heating a material web or for producing a packaging tray.
  • Heating elements are known from the prior art and are part of a packaging machine. With these packaging machines, a trough is formed by deep-drawing in a planar web of material, for example a film web. To do this, the material web must be heated with a heating element before deep-drawing. Particularly in the case of monofoils, which consist of a single material, the heating must take place quickly and evenly, a minimum permissible temperature for the desired shape result must not be fallen below and a maximum permissible temperature must not be exceeded, with the difference between the minimum and maximum permissible temperature being very large is small, i.e. there is only a small temperature window. At the same time, the warm-up must take place quickly in order to be able to provide sufficient cycle power. Conventional heating elements do not or only insufficiently meet these requirements.
  • the task is solved by a preheating, a sealing or a molding tool of a packaging machine with a heating element for heating the packaging material, in particular a monoplastic film, with a large number of ceramic heating modules, in which the modules have no cover.
  • This subject matter of the present invention relates to a preheater, a sealing or a forming tool with a heating element used for heating a material web, used in particular in a packaging machine.
  • the web of material is stationary when heated and rests against the heating element.
  • the heating element can have a means that improves the contact between the web of material and the heating element, which is provided in particular in such a way that the web of material bears against the heating element over its entire surface.
  • the heating element is a plate, but not necessarily but preferably such a flat two-dimensional object. However, it can also be curved or have a different 3-dimensional shape.
  • the heating element is preferably located upstream of the forming tool, in relation to the transport direction of the material web, for example as a so-called preheater or as a so-called sandwich heater and/or in the sealing tool. Alternatively or additionally, the heating element is integrated into the mold, for example as a so-called cover heater.
  • the heating element can be connected directly to a carrier that is part of the packaging machine, in particular part of the forming station and here in particular part of the upper tool, or be an integral part of the carrier. This carrier can be provided to be vertically movable, so that it can be moved towards and away from the material web. Thermal insulation is preferably provided between the heating element and the carrier.
  • the heating element which is operated with electrical energy, heats the material web preferably from one side, for example from above as in a lid heater or from below as in a so-called “preheating from below", or from both sides, for example from above and below as in a sandwich heating as so-called “pre-heating from above and below", especially if the energy input into the material web should be even faster.
  • the heating element has a large number of ceramic heating modules.
  • Each module preferably has a plurality of, in particular discrete, heating means, for example 5-50, preferably 51-100, even more preferably 101->1000 heating means, in particular pixels.
  • Such heating means are, for example, one or more printed circuit boards. Electrical energy can be applied to each heating element/pixel in different ways in order to achieve different actual temperatures, for example per heating element/pixel, and/or be regulated/controlled with different actual and/or setpoint values.
  • the heating means can be provided according to a specific pattern on the module. They are preferably provided equidistantly.
  • the modules of a heating element can differ from one another in shape and/or size and/or heat output.
  • the module can also consist of a large number of pixels that can be controlled individually and/or in groups. These pixels can be arranged in a specific pattern in a module.
  • the Pixels are preferably distributed equidistantly across the heating element.
  • a specific number of pixels are preferably arranged on a printed circuit board, it being possible for the heating element to have a large number of such printed circuit boards.
  • the pixels of a circuit board can be controlled individually or as one or more groups.
  • the heating element On the side of the heating element facing the web of material to be heated, the heating element has no cover. The heating element is therefore in direct contact with the web of material. For heating, the web of material lies directly against the heating modules of the heating element.
  • This preferred embodiment of the present invention can have the advantage of introducing the heating energy to be introduced into the material web in a targeted manner and with the local differences provided, for example from pixel to pixel, into the material web without the heating energy flowing away unintentionally into adjacent areas of the cover and thus can also come from the material web if the material web is intended to be colder there, for example, as can happen with a cover that conducts heat well.
  • the omission of a cover makes it possible, even with large temperature gradients between heating means/pixels, to introduce the respective heating energy in a targeted manner into the areas of the material web in which it is intended.
  • the heating element is alternatively provided with a coating, in particular a coating applied chemically, thermally or by adhesive, for example in order to eliminate or at least minimize the tendency for the material web to stick to the heating element, such a coating not being a covering in the sense of the invention because it is thin compared to a cover and/or has a low thermal capacity or does not permit a pronounced outflow of heating energy into adjacent areas.
  • the energy transfer between the web of material and the heating element for heating the web of material preferably takes place by thermal conduction.
  • the contact between the material web and the heating element is therefore preferably improved, for example by sucking the material web onto the heating element.
  • the negative pressure required for this can take place through recesses in the heating modules of the heating element and/or through gaps and/or recesses between adjacent heating modules.
  • the heating element preferably has a controller/regulator with which a setpoint temperature and/or an energy input value for the respective module or a group of heating modules can be specified and regulated/controlled. This control/regulation can be part of the control/regulation of the packaging machine or a separate unit.
  • Each module or group of heating modules and/or each pixel preferably has a sensor with which the actual temperature and/or the energy input can be measured, for example using the ohmic resistance of the heating element or using a separate sensor. This measurement is preferably carried out discontinuously, alternatively continuously.
  • the control/regulation preferably controls/regulates the module(s) in the edge area of the heating element with a higher setpoint temperature and/or a higher energy input than the module(s) in the central area of the heating element itself.
  • the web of material is preferably a monoplastic film or monofoil, i.e. a plastic film which consists of at least one layer and/or a single material or predominantly consists of a single material, for example at least 95% by weight of one material and/or a mixture of substances consists of a group of materials and is preferably considered to be recyclable and/or moderately or highly recyclable; in contrast to multi-layer foils or foils that consist of a mixture of substances from different material groups that are considered to be non-recyclable or at most slightly recyclable.
  • a monoplastic film or monofoil i.e. a plastic film which consists of at least one layer and/or a single material or predominantly consists of a single material, for example at least 95% by weight of one material and/or a mixture of substances consists of a group of materials and is preferably considered to be recyclable and/or moderately or highly recyclable; in contrast to multi-layer foils or foils that consist of a mixture of substances from different material groups that are considered to be non
  • the material of the monofilm is preferably 100% by weight or the majority, in particular at least 95% by weight, polypropylene (PP), polyethylene (PE) or polyethylene terephthalate (PET) or amorphous polyethylene terephthalate (APET) or a mixture of substances from only one material group, for example the polyolefins, for example PP and PE.
  • a monofilm can consist of at least 95% by weight of at least one PP layer, which is connected to a sealing or peeling layer made of PE.
  • the thickness of the monofilm is preferably 250-500 ⁇ m, particularly preferably 290-310 ⁇ m.
  • the temperature of the temperature window is preferably 135-137° C. or the temperature window covers a range of preferably 3 Kelvin.
  • the recycled content of the material is the
  • Material web especially with A-PET no more than 20 - 50% by weight
  • a thickness of the monofoil of 250-500 ⁇ m 2.5-5 seconds are preferably required, or even only 1-3 seconds with greater energy input, in order to bring the material web to the desired temperature, at which thermoforming with a thermoforming result, i.e for example good shape is possible.
  • the energy transfer per unit of time from the heating element to the material web is not constant over time during the heating.
  • at least 40%, preferably at least 50%, even more preferably at least 60% of the heating energy required to reach the desired temperature of the material web is transferred to the material web within 30% of the heating time.
  • the setpoint temperature preferably changes for at least one, preferably several, in particular all heating means/pixels during a heating cycle.
  • the heating system can be operated with a low-voltage network, for example 400V, or in particular a low-voltage network, for example less than 50V, in order to be able to provide very high amounts of electrical energy for a short time, which is then converted into heating energy.
  • a low-voltage network for example 400V, or in particular a low-voltage network, for example less than 50V, in order to be able to provide very high amounts of electrical energy for a short time, which is then converted into heating energy.
  • the material web can be heated up quickly thanks to the increased set temperature and/or the booster function.
  • This has proven to be the quality of the resulting deep-drawn packaging tray in terms of shape, for example in terms of pronounced contours, shape and dimensional accuracy compared to the shape of the tool, thickness distribution, for example within a package and/or an entire preference, transparency and/or color turned out to be advantageous.
  • the heating element is made up of a large number of heating modules, the surface of which is preferably partially rectangular and partially square.
  • the most varied widths of material webs ie different extensions of material webs in the direction transverse to the direction of transport, can be heated very efficiently.
  • the modules can all have the same length.
  • extensions transverse to the transport direction of the material web of between 10 and 70 mm, preferably 20 and 60 mm, even more preferably 25 and 55mm
  • the surface is to be understood as the surface of the module facing the material path.
  • the modules are preferably provided with a square surface in the central area and the modules with a rectangular surface in the edge area of the heating element.
  • a gap is preferably provided between two adjacent heating modules, which gap is preferably sealed, in particular with an elastic material.
  • the gap can also be completely or at least partially open, for example to generate a negative pressure between the module and the web of material.
  • a heating element that has a large number of ceramic heating modules is preferably provided in a particularly thin-walled housing that encompasses the heating element from below and on the sides, but not on the side facing the material web, preferably in the space between the heating element and the housing is provided with a vacuum which preferably also acts through recesses in the heating modules of the heating element and/or through gaps and/or recesses between adjacent heating modules and between the module and the material web.
  • the object is also achieved with a packaging machine with a forming station that forms troughs in a base material web, with a heating element heating the base material web before and/or during shaping, and a sealing station that connects a top material web with the base material web and has a heating means for this purpose, wherein it has a forming and/or sealing tool according to one of the preceding claims.
  • This subject matter of the present invention relates to a packaging machine for producing packaging, in which a base web of material, for example a plastic film, in particular a monofilm or a web of material, which in particular has a layer of cardboard, paper or another layer other than plastic, is unwound from a supply roll and is preferably transported intermittently/cyclically along the packaging machine in a transport plane.
  • this lower web of film is then initially formed by means of a deep-drawing tool in order to For example, to form a trough and/or a structure, in particular an anti-slip structure, in the base web of material.
  • the forming station has a lower and an upper tool, which are moved towards one another for forming and away from one another for further transport of the lower web of material.
  • the lower tool is located below and the upper tool above the transport level of the lower web of material.
  • the lower web of material is then covered with packaged goods, in particular foodstuffs such as sausage, ham or cheese, alternatively, for example, non-food packaged goods such as medical technology or other products, and in a next step sealed with a top film in a sealing station, with the Upper film is usually sealed to the lower film web.
  • Another heating element is used for this purpose, which provides the thermal energy required for sealing.
  • the packaging thus finished is then separated by cutting out the packaging from the lower and upper web of material, for example using a cross cutter and a longitudinal cutter.
  • the longitudinal or cross cutter can also be made available as a contour punch.
  • the web of upper material is also unrolled from a supply roll and can also be thermoformed, for example in an upper film forming station, after it has preferably been heated with the heating element according to the invention.
  • a dancer is preferably located downstream of at least one supply roll, which dancer keeps the tension in the respective material web at least substantially constant.
  • the dancer can be, for example, a linear or a rotary dancer.
  • the heating element which heats the material web to be thermoformed, is preferably located upstream of the forming tool(s) of the forming station and/or in the forming station.
  • the heating element can be firmly connected to one tool, for example the upper tool, and/or its frame and can, for example, be moved vertically together with it.
  • the distance between the mold and the upstream heating element and/or the housing is preferably as small as possible, preferably a few millimeters, preferably 0.5 to 1 mm, on the one hand to save space and material web, on the other hand to cool the material web before molding to reduce or even eliminate, but in particular to be able to heat the material web in the format area directly upstream.
  • a heating means/pixel whose longitudinal extension parallel to the transverse extension of the heating element, provided immediately adjacent to the molding station.
  • the deep-drawn material web is preferably cooled in the forming station. It is particularly preferable for the shape (die) to be cooled, particularly preferably for rapid cooling.
  • the object is also achieved with a method for heating a material web or for producing packaging from a lower material web and an upper material web, with the inventive or preferred sealing and/or forming tool and/or the inventive or preferred packaging machine, the lower material web and/or the face material web is brought into direct contact with the ceramic modules during heating.
  • This subject matter of the present invention relates to a method for heating a material web, for example in a packaging machine, in particular in a so-called “form-fill-seal” packaging machine.
  • the web of material is preferably a plastic film, in particular a so-called monofilm, which is disclosed in detail above.
  • the method according to the invention ensures that the material web is heated quickly and uniformly within a narrow temperature window.
  • the material web is preferably heated by means of the heating element by radiation and thermal conduction, but in particular by thermal conduction.
  • the energy input for heating the material web preferably takes place by means of an energy boost, which begins as soon as the material web touches the modules of the heating element.
  • an energy boost within the meaning of the invention, at least 40%, preferably at least 50%, even more preferably at least 60% of the heating energy is transferred to the material web within 30% of the heating time.
  • the amount of energy required for this can be made available by an increased amount of energy that is stored in the heating element and/or by an electronic booster.
  • the booster acts preferably in one and/or two time periods of the heating of the material web and preferably differently therein.
  • the booster is preferably started together with or when the signal that initiates or starts the advancement of the material web is present, and preferably ends when the lower and upper tools are closed after they have previously been moved towards one another.
  • the second period of time preferably starts at the time when the material web touches the heating element, which preferably starts at the end of the heating of the material web, for example when the ventilation starts and/or the material web detaches from the heating element, shortly before the lower and upper tools open. ends.
  • the booster increases the temperature of the heating element, for example from 100°C to 135-137°C, which corresponds for example to the critical film temperature of PP film, or particularly preferably even to 138° or 139°C with some excess heat.
  • the excess heat above the critical film temperature is implemented in order to be able to transfer as much energy as possible into the film without overheating the film.
  • the first time period lasts only about 1-1.5 seconds.
  • the booster compensates for the heat dissipation through the material web, which is usually only exposed to ambient temperature before contact, which takes energy from the heated heating element, so that energy also has to be fed into the heating element so that the target temperature in the material web, for example 135 -137°C is reached.
  • the duration of the second period of time depends in particular on the thickness of the material web, with a duration of approx. 1 second per 100 ⁇ m thickness of the material web being used as a guide value, ie a duration of approx. 4 seconds is required for a thickness of 400 ⁇ m.
  • a material web, in particular a monofoil, which has a maximum permissible heating temperature is also preferably heated in the preferred method in such a way that the temperature of the heating element is at least temporarily and/or locally higher than the permissible heating temperature of the material web.
  • the temperature of at least one module of the heating element is in particular before touching the module and the Material web increases above the maximum permissible temperature of the material web and is preferably lowered when touched, preferably at least temporarily reduced below the maximum permissible temperature of the material web.
  • the material web is preferably cooled during and/or after forming.
  • the forming station preferably has cooled deep-drawing molds for this purpose; i.e. the matrix into which the material web is drawn and/or pressed is preferably cooled.
  • the web of material is preferably a mono-PP or a mono-PE or an A-PET film.
  • the recycled content of the film is preferably ⁇ 40% by weight, particularly preferably ⁇ 100% by weight.
  • the recycled content of the film is the proportion that the film contains as recycled material.
  • FIG. 1 schematically shows the packaging machine according to the invention.
  • Figure 2 shows a detail of the packaging machine
  • FIG. 3 shows a possible configuration of ceramic heating modules
  • FIGS. 4-7 show possible widths of the heating element relative to the packaging format to be produced.
  • FIG. 1 shows the packaging machine 1 according to the invention, which has a forming station 2 , a filling station 7 and a sealing station 15 .
  • the packaging machine can be a so-called thermoformer.
  • a base web 8 here a plastic film 8, in particular a monofilm made of PP, PE, PET or A-PET, is pulled off a supply roll and transported in cycles from right to left along the packaging machine according to the invention. With each cycle, the sub-material web 8 is transported further by one format length/advance length.
  • the packaging machine has two transport means 26 (see FIG. 2), in the present case two endless chains, alternatively for example two toothed belts, which are arranged on the right and left of the base web 8 .
  • At least one gear wheel is provided for each chain both at the beginning and at the end of the packaging machine, around which the respective chain is deflected. At least one of these gears is driven.
  • the gear wheels in the input area and/or in the output area can be connected to one another, preferably by a rigid shaft.
  • Each transport means has a large number of clamping means/grippers 22 which grip the base material web 8 in a clamping manner in the infeed area and transmit the movement of the transport means to the base material web 8 .
  • a heating element is provided downstream of the inlet area and upstream of the forming station 2, which heats the base material web 8, in particular when the latter is at a standstill.
  • the heating element is a so-called pre-heating from below 25 and/or pre-heating from above 26 .
  • the forming station 2 has a lower tool 4 and an upper tool 3 .
  • the lower tool 4 can be moved up and down, being moved upwards in the direction of the lower material web 8 for shaping and downwards for further transport of the lower material web 8 .
  • the web of base material is preferably clamped between the two tools 3, 4.
  • the lower tool 4 can be arranged on a lifting table 5, which, as symbolized by the double arrow, can be vertically adjustable in order to produce the movement of the lower tool described above.
  • the packaging troughs 6 indicated here formed in the base material web or the base material web 8 are then filled with the packaged goods 16 in the filling station 7 .
  • the subsequent sealing station 15 which also consists of an upper tool 12 and a lower tool 11, which can be vertically adjusted if necessary, an upper film 14 is fixed to the lower web of material 8 by sealing in a materially bonded manner.
  • the movement of the lower material web 8 is transferred to the upper material web 14 .
  • the upper tool and/or optionally the lower tool are lowered or raised before and after each film transport.
  • the upper film 14 can also be guided in transport means or transported by transport chains, with these transport means then only extending in front of the sealing station and possibly upstream.
  • the means of transport for the lower film and/or upper film can only be provided on one side.
  • the top film can also be heated and/or thermoformed with a heating element.
  • a sealing frame is provided as the lower tool 11, for example, which has an opening per packaging trough into which the packaging trough, if any, is inserted during the sealing, ie at the Upward movement of bottom seal tool, dips.
  • the upper and lower webs of material are pressed together between the upper and lower tools 12, 11 and bond under the influence of heat and pressure. After sealing, the tools 11, 12 are moved apart again vertically.
  • a dancer for example a rotary dancer, can be provided between the supply roll of the upper material web 14 and the sealing tool, which keeps the material web 14 at a constant tension as far as possible.
  • a dancer is preferably also provided in the area of the base material web 8, preferably downstream of the supply roll.
  • the dancer is preferably a linear dancer.
  • a gas exchange preferably takes place in each packaging cavity. For this purpose, the air present in the packaging tray is first of all partially sucked off and/or replaced by an exchange gas.
  • holes can be made in the base web 8 in the area of the transport chains in the area of each format, through which the air between the webs 8, 14 is sucked out and/or the exchange gas is blown in.
  • the finished packages are separated, which is done with the cross cutter 18 and the longitudinal cutter 17, for example.
  • the cross cutter 18 can also be raised or lowered with a lifting device 9 .
  • the sealing tool 11, 12 has a punch that cuts through the lower and upper material web before, during and/or after the sealing.
  • several packages are produced at the same time in each cycle, which are arranged in a so-called format as a matrix.
  • the web of base material is heated by a heating element 19 in the forming station and/or upstream thereof and/or the sealing station has a heating element 19 .
  • This heating element preferably has a large number of ceramic heating modules, against which the material web lies directly during heating.
  • the heating element provides the thermal energy with which the web of material is heated.
  • the heating element can be provided in the form of a plate.
  • a plate in the sense of the invention is not necessarily but preferably a flat two-dimensional object. It can also be curved or have a different 3-dimensional shape.
  • the material web to be heated is preferably in full contact with the heating element.
  • FIG. 2 shows a view of the packaging machine transversely to the transport direction of the material web 8, which has a width FB and is transported along the packaging machine here by means of two chains 21 (only one shown). are on the chain Means of transport/clamping means 22 are provided, which grip the web in a clamping manner during transport.
  • the transport means 22 are provided at a distance A from one another.
  • the material web is gripped in a width F per edge area. This results in a nominal useful width N of the material web.
  • the tool that processes the web of material has an extension W transverse to the transport direction of the web of material.
  • a gap L is generally provided between the tool and the means of transport 22 .
  • packaging or a format of packaging with a width P can be produced transversely to the transport direction of the material web.
  • FIG. 3 shows a heating element 19 which has a large number of ceramic modules 21, here six, which heat the material web 8, 14 (not shown).
  • three modules are provided transversely to the transport direction T of the material web and two modules 21 are provided in the transport direction.
  • two rectangular elements are provided in the edge area and one square element in the central area between the two edge elements transversely to the transport direction.
  • the edge modules 21 (at the very top and at the very bottom) have a larger or smaller transverse extension BM than the central module (module in the middle).
  • the overall width B of the modules 21 can be adapted to the useful width of the web of material.
  • the length LM of all modules can be the same.
  • B ⁇ N Preferably B ⁇ N.
  • FIG. 4 shows a possible tool width W and a possible heating element width B relative to the film width.
  • the width W of the tool and the width B of the ceramic modules is preferably ⁇ the usable width N of the material web.
  • the widths W, B are shown here to be the same for the sake of simplicity.
  • B > W and/or B ⁇ FB.
  • W ⁇ N.
  • FIGS. 5-7 each show a format of packaging trays/packaging 6 that can be processed and/or produced with a tool 3, 4, 11, 12. In the present case, it is a 4 x 4 format shown in FIG Packagings.
  • P Preferably P ⁇ N.
  • P>N is also technically possible.
  • the width BM of the modules is selected in such a way that the total is B, with the gaps between the heating modules preferably being taken into account.
  • P ⁇ W. B can be equal to W or, preferably, equal to P. Otherwise, reference is made to the comments on FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

La présente invention concerne un outil de scellage ou de formage d'une machine d'emballage comprenant un élément chauffant (19) destiné à chauffer le matériau d'emballage, en particulier un film monoplastique, comprenant une pluralité de modules de chauffage (21) en céramique. La présente invention concerne en outre la machine d'emballage (1, figure 1) elle-même ainsi qu'un procédé de chauffage d'une bande de matériau (8, 14) ou de fabrication d'une barquette d'emballage. Les modules (21) ne comportent aucun couvercle, mais peuvent toutefois être dotés d'un revêtement de protection.
PCT/EP2022/080540 2021-11-05 2022-11-02 Élément chauffant en matériau céramique Ceased WO2023078921A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22813912.7A EP4426545A1 (fr) 2021-11-05 2022-11-02 Élément chauffant en matériau céramique

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE102021212480.1 2021-11-05
DE102021212480 2021-11-05
DE102021213334 2021-11-26
DE102021213334.7 2021-11-26
DE102022202680 2022-03-18
DE102022202680.2 2022-03-18
DE102022204624 2022-05-11
DE102022204624.2 2022-05-11
DE102022210545 2022-10-06
DE102022210545.1 2022-10-06

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293895A (ja) * 1992-04-20 1993-11-09 Dainippon Printing Co Ltd 真空プレス積層成形装置及び方法
DE102016117834A1 (de) * 2016-09-21 2018-03-22 watttron GmbH Siegelorgan

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293895A (ja) * 1992-04-20 1993-11-09 Dainippon Printing Co Ltd 真空プレス積層成形装置及び方法
DE102016117834A1 (de) * 2016-09-21 2018-03-22 watttron GmbH Siegelorgan

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