[go: up one dir, main page]

WO2011120715A1 - Packaging shell and device for producing same - Google Patents

Packaging shell and device for producing same Download PDF

Info

Publication number
WO2011120715A1
WO2011120715A1 PCT/EP2011/001655 EP2011001655W WO2011120715A1 WO 2011120715 A1 WO2011120715 A1 WO 2011120715A1 EP 2011001655 W EP2011001655 W EP 2011001655W WO 2011120715 A1 WO2011120715 A1 WO 2011120715A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging
coating
sealing edge
sealing
film
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/EP2011/001655
Other languages
German (de)
French (fr)
Inventor
René Derks
Ulrich Kremer
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.)
Silver Plastics GmbH and Co KG
Original Assignee
Silver Plastics GmbH and Co KG
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 Silver Plastics GmbH and Co KG filed Critical Silver Plastics GmbH and Co KG
Publication of WO2011120715A1 publication Critical patent/WO2011120715A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces 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
    • B29C66/01—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
    • 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
    • B29C66/80—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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • 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
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the tape handling mechanisms, e.g. 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and 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
    • B29C66/71—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/727—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 structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C66/812—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
    • B29C66/8126—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 intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81264—Mechanical properties, e.g. hardness
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to 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
    • B29C66/80—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
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29K2073/00—Use of other polymers having oxygen as the only hetero atom in the main chain, as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/007—Hardness
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • 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

Definitions

  • the invention relates to a packaging tray, for example, for food, which is made of a thermoformed plastic film, as well as a Vorrich- device for producing such packaging trays.
  • Packaging trays made of thermoformed plastic films are suitable, for example, as meat packaging or so-called ready-meal trays for receiving ready meals, which merely need to be heated, and offer, depending on the type of plastic used, i.a. Good cold impact toughness and high transparency.
  • CONFIRMATION COPY Lyolefinfolien in particular polyethylene films on PET or insufficiently liable, ie there is no satisfactory sealability.
  • the upper side of the plastic film consists of a layer of a plastic film compatible with the sealing film, in particular identical, such as polyethylene, while the lower layer is made of PET is formed and such a composite, for example by coextrusion or lamination.
  • the sealing film in particular identical, such as polyethylene
  • PET polyethylene
  • a good sealability is given, however, such sealing shells are complex and expensive and are problematic because of the high polyethylene content in recycling, since recycled PET thus recovered is no longer transparent.
  • the high PE content in the stamped grid of the remaining film after completion of deep drawing proves to be problematic.
  • a common PE layer laminated to a PET layer has a thickness of about 40-60 ⁇ m.
  • Object of the present invention is therefore to propose a packaging tray of the type mentioned, which can be produced at particularly low cost, ensures good adhesion of a usually not welded to the plastic film of the packaging shell sealing film on the sealing edge and the recycling of such a packaging tray or whose re-enabling the production of highly transparent films or other products.
  • the packaging shell of a first plastic film and the sealing film of a second plastic film which plastic films are not welded together using pressure and heat and on the packaging shell only in the region of the top side of the side walls surrounding sealing edge in with the sealing film to be welded area to apply a strip-like coating of a sealable with the sealing film material.
  • the proportion of the sealable material is limited to a maximum of 1, 5% of the total material content of the packaging shell.
  • the second plastic film to form the sealing film of a polyolefin such as polyethylene or polypropylene may be formed.
  • the coating via which the welded connection between the sealing edge of the packaging tray according to the invention and the sealing film is produced, can be formed from a polyolefin, such as polyethylene or polypropylene, preferably polyethylene, or be formed on the basis of a rubber.
  • the proportion of the polyolefin, in particular polyethylene, on the packaging tray formed, for example, from PET is reduced to such an extent that despite the good adhesion of the sealing film to the packaging tray, an r-PET is produced in recycling. can be made, which in turn results in transparent films or other products.
  • the cost increase in relation to the benefits achieved is negligible.
  • a packaging tray designed in this way can thus be completely ground and returned, including the resulting stamped grid, eg in the event of a system failure, without impairing the transparency. In the normal case, moreover, only the stamped grid is returned, on which no sealable coating is applied, ie it is pure material of the first plastic film, for example, pure PET.
  • a film of sealable material is punched out in such a way that a stamped part is obtained which covers the sealing edge of the packaging shell and is applied to the packaging shell of the first plastic film before, during or after the deep-drawing of the packaging shell, so that the sealing edge of the packaging tray obtained is provided with the sealable coating.
  • the order of the sealable coating can take place in the so-called thermal transfer process on the sealing edge of the packaging shell according to the invention.
  • a further possibility of application is to carry out a transfer coating in the sealing edge area by passing the sealing edge past at least one roller which carries the sealable coating in liquid form to its surface and delivers it to the sealing edge.
  • a transfer coating in the sealing edge area by passing the sealing edge past at least one roller which carries the sealable coating in liquid form to its surface and delivers it to the sealing edge.
  • the solvent then optionally evaporated with energy in a heater, or the sealable coating is activated by UV radiation in the so-called corona process, so that a solvent can be waived.
  • Another possibility of applying the sealable coating to the sealing edge of the packaging tray according to the invention is to apply a suitable hot-melt of the sealable coating to the sealing edge of the previously deep-drawn packaging tray via at least one robot-controlled application nozzle.
  • the application of the sealable coating can not only take place in the region of the sealing edge, but also on other desired areas, e.g. also on the upper edges of several cavities of the packaging shell abti- l dividing walls.
  • the sealable coating is printed or stamped on the desired areas of the packaging tray.
  • a stamping station in which the packaging tray is inserted and flexibly supported in the area of the edges to be printed or wetted.
  • the sealable coating is then transferred to the edges of the packaging shell to be wetted. It is understood that the application of the sealable coating on the desired areas of the packaging shell can still be carried out in a thermoforming station for the production of the packaging trays or in a subsequent operation on the already deep-drawn packaging tray.
  • polyethylene which can be reliably sealed with the usual sealing films based on polyethylene, or it is used a rubber. If there is good adhesion to the first plastic film with good bondability to the second plastic film, it may be various types of natural or synthetic rubbers or mixtures thereof.
  • the packaging tray may consist of both foamed and unfoamed plastic material or combinations thereof.
  • a device according to the invention for the production of the aforementioned packaging trays comprises a stamping station into which the packaging trays can be inserted, with a die which has the following raised stamping areas following the course of the sealing edge and which can be placed intermittently on the packaging trays, and a coating by means of the raised regions from a sealable material on the sealing edge can be applied.
  • stamping station can be designed both integrated into the thermoforming station and provided downstream of the thermoforming station.
  • the application method is characterized insofar by the fact that in-line or separately produced packaging trays cyclically individually by means of the sinking stamp in the region of the sealing edge with the coating be provided before at a later time filled the packaging and the sealing film is applied.
  • the coating is preferably liquid or viscous for this purpose.
  • the raised areas of the stamp are advantageously equipped with a non-adhesive surface against the coating.
  • the stamping station may have support surfaces for the support of the sealing edge on the side opposite the stamp.
  • This support surface is formed according to a further proposal of a following the course of the sealing edge cord, which is made of a softer material than the raised portions of the punch.
  • the material for the cord for example, a soft silicone or EPDM is suitable, and the raised portions of the punch are e.g. made of a contrast harder and preferably thermally conductive modified silicone to which the coating does not adhere.
  • the stamp can be placed linearly on the Ver-packungsschale according to an embodiment of the invention or alternatively be designed as a stamp wheel, which rolls on the surface of the packaging tray. To ensure the most homogeneous application of the coating on the sealing edge by means of a punch, this has a chamfer along the edges of the raised punch areas. It is understood that instead of the above-described transfer of the coating by means of stamp and the order types already mentioned above may be provided. Further embodiments and details of the invention will be explained in more detail using an exemplary embodiment. Show it:
  • Figure 1 shows a schematic representation of an apparatus for the production of packaging trays according to the invention
  • Figure 2 shows a schematic representation of a packaging tray according to the
  • FIG. 3 shows a detail of the stamping station according to FIG. 1.
  • a packaging tray is e.g. for packaging foodstuffs, which is produced from a film by the deep drawing process, such that it comprises a bottom 10, side walls 11 and a peripheral sealing edge 12 adjoining the side walls 11 on the top side.
  • the packaging tray 1 is in this case made of preferably transparent pure PET, by deep-drawing such a pure PET film to such a packaging tray 1.
  • the peripheral sealing edge 12 on which the sealing film 2 comes to rest with a strip-like circumferential coating 3 of a sealable with the sealing film 2 material Mistake.
  • sealing foils 2 are usually made of a readily weldable plastic, such as a polyolefin, such as polyethylene, but in the illustrated embodiment, a packaging shell 1 made of pure PET or only very poorly in the with S Set marked area, ie, welded to the sealing edge 12 leaves.
  • a readily weldable plastic such as a polyolefin, such as polyethylene
  • the coating 3 which is produced for example on the basis of a polyolefin, such as polyethylene, in the manner described below after the thermoforming of the packaging tray 1 on the sealing edge 12 adherent applied so that then after placing the sealing film 2 in the with S characterized areas thermal bonding with the sealing film 2 can be effected.
  • a polyolefin such as polyethylene
  • the packaging shell 1 comes without the usual in the prior art full-surface formation of the top of the packaging shell 1 deep-drawn film of a polyolefin and the proportion of the coating 3 of polyolefin is in this way a maximum of 3 wt .-%, preferably a maximum 1, 5 wt .-% based on the total weight of the packaging shell 1, so that it can be completely returned to the production cycle, without the PET film for the production of the packaging tray 1 loses transparency.
  • the application of the polyolefin coating 3, which takes place only in the region of the sealing edge 12, enables a stamped grid of the residual foil to remain after deep-drawing the foil to the packaging shell 1, which has no polyolefin components, so that this stamped grid can be fully recycled.
  • FIG. 2 The production of such a packaging tray 1 according to FIG. 2 is shown schematically in FIG.
  • thermoforming station 41 which comprises a thermoformable punch 411 above the film 4 and a mold 410 adapted to the shape of the packaging shell 1 underneath the film 4 ,
  • a Transport means 42 of a stamping station 43 supplied which comprises a tray receptacle 430, in which the packaging tray 1 is inserted and held in position, for example in a manner not shown by means of a vacuum suction.
  • the shell receptacle 430 comprises, as shown in detail in FIG. 3, support surfaces 430a for the flexible support or support of the sealing edge 12 of the inserted packaging tray 1 in the region of the underside of the sealing edge 12.
  • the upper side of the sealing edge 12 lies opposite a stamp 431 of the stamping station 43 that can be moved in a cyclic manner according to arrow D, this stamp 431 having raised regions 431 a following the course of the sealing edge 12 and before being placed on the packaging shell 1 before the stamp 431 is placed the coating 3 wetted or soaked.
  • the coating may for this purpose be melted by means of a heater or be liquefied by means of a solvent and is e.g. by means of a doctor roller on the sealing edge 2 facing surface of the raised portions 431 a of the punch 431 applied.
  • the punch 431 is lowered onto the packaging tray 1, the raised areas 431 a resting on the sealing edge 12 of the packaging tray and the coating 3 being transferred to the sealing edge 12.
  • the support surface 430a of the tray receptacle 430 is formed by a circumferential EPDM cord aligned along the contour of the seal rim 12, while the raised portions 431a of the punch 431 are formed of a correspondingly harder silicone cord to which the coating 3 does not adhere. It will further be appreciated that the raised portions 431a are formed along their edges with a fillet or bevel 432 to ensure uniform transfer of the coating 3 to the sealing edge 12 of the packaging tray.
  • the punch 431 moves back upwards and the packaging tray 1 coated and released in this way can be removed from the device according to arrow C, subsequently filled with the packaged goods and, after placing the sealing film 2 along the areas S, welded to the latter with the sealable coating 3 interposed therebetween ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

The invention relates to a packaging shell (1) produced from a deep-drawn plastic film having a floor (10), side walls (11), and a circumferential sealing edge (12) at the top of the side walls, on which a sealing film (2) can be laid and welded to the sealing edge (12), wherein the packaging shell (1) is produced from a first plastic film and the sealing film (2) is produced from a second plastic film, said plastic films not being weldable to each other by the application of pressure and heat, and a strip-like circumferential coating (3) made of a material that can be welded to the sealing film is applied to the packaging shell (1) only in the region of the circumferential sealing edge (12) at the top of the side walls. The invention further relates to a device for producing such packaging shells.

Description

Verpackungsschale und Vorrichtung zur Herstellung derselben  Packaging tray and device for producing the same

Beschreibung: Description:

Die Erfindung betrifft eine Verpackungsschale, beispielsweise für Lebensmittel, die aus einer tiefgezogenen Kunststofffolie hergestellt ist, sowie eine Vorrich- tung zur Herstellung derartiger Verpackungsschalen. The invention relates to a packaging tray, for example, for food, which is made of a thermoformed plastic film, as well as a Vorrich- device for producing such packaging trays.

Verpackungsschalen aus tiefgezogenen Kunststofffolien eignen sich beispielsweise als Fleischverpackung oder sogenannte Ready Meal Trays zur Aufnahme von Fertigmahlzeiten, die lediglich noch erwärmt werden müssen, und bieten je nach Art des verwendeten Kunststoffes u.a. gute Kaltschlagzähigkeit und hohe Transparenz. Packaging trays made of thermoformed plastic films are suitable, for example, as meat packaging or so-called ready-meal trays for receiving ready meals, which merely need to be heated, and offer, depending on the type of plastic used, i.a. Good cold impact toughness and high transparency.

Bei der Verwendung als Lebensmittelverpackung ist es üblich, derartige Verpackungsschalen mit einem oberseitig umlaufenden Siegelrand zu versehen, auf den nach Befüllung der Verpackungsschale mit dem zu verpackenden Gut eine Siegelfolie aufgelegt wird und mit dem Siegelrand verschweißt bzw. versiegelt wird, so dass das Gut in der Verpackungsschale eingeschlossen und vor Umgebungseinflüssen geschützt ist. Für Ready Meal Trays und Verpackungsschalen mit hoher Transparenz und Kaltschlagzähigkeit bietet sich der Einsatz einer Kunststofffolie aus Polyethylen- terephthalat (PET) an. Problematisch bei den bislang verwendeten Verpak- kungsschalen mit Siegelrand, die nachfolgend einfach als Siegelschalen bezeichnet werden, ist es, dass die üblicherweise als Siegelfolie verwendeten Po- When used as a food packaging, it is customary to provide such packaging trays with a sealing edge on the top, is placed on the filling of the packaging tray with the goods to be packaged a sealing film and welded or sealed with the sealing edge, so that the goods in the Packaging tray is enclosed and protected from environmental influences. For ready-meal trays and packaging trays with high transparency and cold-impact toughness, the use of a plastic film made of polyethylene terephthalate (PET) is recommended. A problem with the sealed-edge packaging containers with sealing edge, which are referred to below simply as sealing cups, is that the pouches normally used as sealing foil

BESTÄTIGUNGSKOPIE lyolefinfolien, insbesondere Polyethylenfolien auf PET nicht oder nur unzureichend haften, d.h. es ist keine zufriedenstellende Siegelbarkeit gegeben. CONFIRMATION COPY Lyolefinfolien, in particular polyethylene films on PET or insufficiently liable, ie there is no satisfactory sealability.

Diesem Problem ist man bisher begegnet, indem man die für die Herstellung der Verpackungsschale verwendete erste Kunststofffolie mehrschichtig aufgebaut hat, wobei die Oberseite der Kunststofffolie aus einer Lage eines mit der Siegelfolie kompatiblen, insbesondere identischen Kunststoffes, wie Polyethylen besteht, während die untere Lage aus PET gebildet wird und ein solcher Verbund z.B. durch Koextrusion oder Laminieren hergestellt wird. Mit einer sol- chen Ausführungsform ist eine gute Siegelbarkeit gegeben, jedoch sind derartige Siegelschalen aufwendig und teuer und sind aufgrund des hohen Polyethy- lengehalts beim Recycling problematisch, da solchermaßen wiedergewonnenes recyceltes PET nicht mehr transparent ist. Insbesondere der hohe PE-Anteil im Stanzgitter der Restfolie nach Abschluss des Tiefziehens erweist sich hierbei als problematisch. Eine übliche auf eine PET-Schicht auflaminierte PE-Schicht weist eine Dicke von etwa 40-60 pm auf. Selbst bei einer insgesamt etwa 1 mm starken Verbundfolie enthält das Stanzgitter der Restfolie, welches zu Recyclingzwecken vermählen wird, somit 4 % PE, bei entsprechend dünneren Verbundfolien auch bis zu 12 %. Wird ein derartiges Mahlgut in den Produktionsprozess der Verbundfolie zurückgespeist, was an sich wünschenswert ist, so wird die produzierte PET-Schicht vollständig milchig und verliert ihre Transparenz. Tolerierbar wären allenfalls PE-Gehalte bis zu etwa 1 %. This problem has hitherto been met by multilayer construction of the first plastic film used for the production of the packaging tray, wherein the upper side of the plastic film consists of a layer of a plastic film compatible with the sealing film, in particular identical, such as polyethylene, while the lower layer is made of PET is formed and such a composite, for example by coextrusion or lamination. With such an embodiment, a good sealability is given, however, such sealing shells are complex and expensive and are problematic because of the high polyethylene content in recycling, since recycled PET thus recovered is no longer transparent. In particular, the high PE content in the stamped grid of the remaining film after completion of deep drawing proves to be problematic. A common PE layer laminated to a PET layer has a thickness of about 40-60 μm. Even with a total of about 1 mm thick composite foil contains the stamped grid of the remaining film, which is ground for recycling purposes, thus 4% PE, with correspondingly thinner composite films also up to 12%. If such a material to be ground is fed back into the production process of the composite film, which is desirable per se, then the produced PET layer becomes completely milky and loses its transparency. At most, PE contents of up to about 1% would be tolerable.

Eine andere Möglichkeit zur Lösung des obigen Problems besteht darin, die Siegelfolie so auszugestalten, dass sie auf PET haftet, jedoch verteuert dies die Siegelfolie erheblich und hat sich von daher im Markt nicht durchgesetzt. Die gleiche Problematik stellt sich auch bei anderen mit Polyolefinen nicht oder nur schlecht verschweißbaren Kunststoffen, wie Polymilchsäurepolymeren (PLA) oder Polystyrol (PS). Aufgabe der vorliegenden Erfindung ist es daher, eine Verpackungsschale der eingangs genannten Art vorzuschlagen, die sich zu besonders niedrigen Kosten herstellen lässt, eine gute Haftung einer üblicherweise nicht mit der Kunststoff- folie der Verpackungsschale verschweißbaren Siegelfolie auf dem Siegelrand gewährleistet und beim Recycling einer derartigen Verpackungsschale oder deren erneut die Herstellung hochtransparenter Folien oder anderer Erzeugnisse ermöglicht. Another way of solving the above problem is to make the sealing film stick to PET, but this makes the sealing film considerably more expensive and has therefore not gained acceptance on the market. The same problem arises in other with polyolefins not or only poorly weldable plastics such as polylactic acid polymers (PLA) or polystyrene (PS). Object of the present invention is therefore to propose a packaging tray of the type mentioned, which can be produced at particularly low cost, ensures good adhesion of a usually not welded to the plastic film of the packaging shell sealing film on the sealing edge and the recycling of such a packaging tray or whose re-enabling the production of highly transparent films or other products.

Zur Lösung der gestellten Aufgabe wird vorgeschlagen, die Verpackungsschale aus einer ersten Kunststofffolie und die Siegelfolie aus einer zweiten Kunststofffolie herzustellen, welche Kunststofffolien unter Anwendung von Druck und Wärme nicht miteinander verschweißbar sind und auf die Verpackungsschale nur im Bereich des oberseitig der Seitenwände umlaufenden Siegelrandes im mit der Siegelfolie zu verschweißenden Bereich eine streifenartig umlaufende Beschichtung aus einem mit der Siegelfolie verschweißbaren Material aufzubringen. To solve the problem, it is proposed to produce the packaging shell of a first plastic film and the sealing film of a second plastic film, which plastic films are not welded together using pressure and heat and on the packaging shell only in the region of the top side of the side walls surrounding sealing edge in with the sealing film to be welded area to apply a strip-like coating of a sealable with the sealing film material.

Auf diese Weise wird der Anteil des siegelfähigen Materials auf maximal 1 ,5 % des gesamten Materialgehalts der Verpackungsschale begrenzt. In this way, the proportion of the sealable material is limited to a maximum of 1, 5% of the total material content of the packaging shell.

Für die erste Kunststofffolie, aus der die Verpackungsschale tiefgezogen wird, kommen insbesondere PET, PLA und PS als Ausgangspolymere in Frage, während die zweite Kunststofffolie zur Ausbildung der Siegelfolie aus einem Poly- olefin, wie Polyethylen oder Polypropylen gebildet sein kann. For the first plastic film, from which the packaging shell is deep-drawn, in particular PET, PLA and PS as starting polymers in question, while the second plastic film to form the sealing film of a polyolefin, such as polyethylene or polypropylene may be formed.

Die Beschichtung, über welche die Schweißverbindung zwischen dem Siegelrand der erfindungsgemäßen Verpackungsschale und der Siegelfolie hergestellt wird, kann aus einem Polyolefin, wie Polyethylen oder Polypropylen, vorzugsweise Polyethylen gebildet sein oder auf Basis eines Kautschuks ausgebildet sein. The coating, via which the welded connection between the sealing edge of the packaging tray according to the invention and the sealing film is produced, can be formed from a polyolefin, such as polyethylene or polypropylene, preferably polyethylene, or be formed on the basis of a rubber.

Somit wird der Anteil des Polyolefins, insbesondere Polyethylen an der z.B. aus PET gebildeten Verpackungsschale soweit reduziert, dass trotz der guten Haftung der Siegelfolie an der Verpackungsschale ein r-PET im Recycling herge- stellt werden kann, welches wiederum transparente Folien oder andere Produkte ergibt. Darüber hinaus ist die Kostensteigerung in Relation zu den erzielten Vorteilen vernachlässigbar gering. Eine solchermaßen ausgeführte Verpackungsschale kann somit vollständig und einschließlich des anfallenden Stanzgitters z.B. bei einer Anlagenstörung wieder vermählen und rückgeführt werden, ohne die Transparenz zu beeinträchtigen. Im Normalfall wird überdies nur das Stanzgitter rückgeführt, auf dem gar keine siegelfähige Beschichtung aufgebracht ist, d.h. es handelt sich um reines Material der ersten Kunststofffolie, z.B. reines PET. Thus, the proportion of the polyolefin, in particular polyethylene, on the packaging tray formed, for example, from PET is reduced to such an extent that despite the good adhesion of the sealing film to the packaging tray, an r-PET is produced in recycling. can be made, which in turn results in transparent films or other products. In addition, the cost increase in relation to the benefits achieved is negligible. A packaging tray designed in this way can thus be completely ground and returned, including the resulting stamped grid, eg in the event of a system failure, without impairing the transparency. In the normal case, moreover, only the stamped grid is returned, on which no sealable coating is applied, ie it is pure material of the first plastic film, for example, pure PET.

Zur Aufbringung der erfindungsgemäß vorgeschlagenen, lediglich im Siegel- randbereich aufgetragenen streifenförmigen Beschichtung zur Herstellung der Siegelfähigkeit zwischen dem Siegelrand der Verpackungsschale und der Siegelfolie stehen verschiedene Verfahren offen. Various methods are available for applying the strip-type coating proposed according to the invention, which is applied only in the edge region of the seal, for producing the sealability between the sealing edge of the packaging shell and the sealing film.

Nach einem Vorschlag der Erfindung wird eine aus siegelfähigem Material be- stehende Folie so ausgestanzt, dass ein Stanzteil erhalten wird, welches den Siegelrand der Verpackungsschale bedeckt und vor, während oder nach dem Tiefziehen der Verpackungsschale aus der ersten Kunststofffolie auf diese aufgebracht wird, so dass der Siegelrand der erhaltenen Verpackungsschale mit der siegelfähigen Beschichtung versehen ist. According to a proposal of the invention, a film of sealable material is punched out in such a way that a stamped part is obtained which covers the sealing edge of the packaging shell and is applied to the packaging shell of the first plastic film before, during or after the deep-drawing of the packaging shell, so that the sealing edge of the packaging tray obtained is provided with the sealable coating.

Nach einem weiteren Vorschlag der Erfindung kann der Auftrag der siegelfähigen Beschichtung im sogenannten Thermotransferverfahren auf den Siegelrand der erfindungsgemäßen Verpackungsschale erfolgen. Eine weitere Möglichkeit der Aufbringung besteht in der Durchführung einer Transferbeschichtung im Siegelrandbereich, indem der Siegelrand an mindestens einer Walze vorbeigeführt wird, die die siegelfähige Beschichtung in flüssiger Form an ihre Oberfläche trägt und an den Siegelrand abgibt. Zur Schaffung der Beschichtung in flüssiger Form kann beispielsweise ein Kautschuk oder Polyethylen in Lösung vorgehalten werden, wobei das Lösungsmittel anschließend gegebenenfalls unter Energiezufuhr in einer Heizeinrichtung verdampft, oder aber die siegelfähige Beschichtung wird mittels UV-Strahlen im sogenannten Coronaverfahren aktiviert, so dass auf ein Lösungsmittel verzichtet werden kann. According to a further proposal of the invention, the order of the sealable coating can take place in the so-called thermal transfer process on the sealing edge of the packaging shell according to the invention. A further possibility of application is to carry out a transfer coating in the sealing edge area by passing the sealing edge past at least one roller which carries the sealable coating in liquid form to its surface and delivers it to the sealing edge. To create the coating in liquid form, for example, a rubber or polyethylene can be kept in solution, the solvent then optionally evaporated with energy in a heater, or the sealable coating is activated by UV radiation in the so-called corona process, so that a solvent can be waived.

Eine weitere Möglichkeit der Aufbringung der siegelfähigen Beschichtung auf den Siegelrand der Verpackungsschale gemäß der Erfindung besteht darin, ein- geeignetes Hot-Melt der siegelfähigen Beschichtung über mindestens eine robotergeführte Auftragsdüse auf den Siegelrand der zuvor tiefgezogenen Verpackungsschale aufzutragen. Another possibility of applying the sealable coating to the sealing edge of the packaging tray according to the invention is to apply a suitable hot-melt of the sealable coating to the sealing edge of the previously deep-drawn packaging tray via at least one robot-controlled application nozzle.

Auch ist es möglich, den das Verpackungsgut aufnehmenden Innenraum der erfindungsgemäßen Verpackungsschale unmittelbar nach dem Tiefziehen derselben durch vorübergehendes Einbringen einer Abdeckung abzuschotten und dann den gesamten freibleibenden Siegelrandbereich der Schale einem Sprühnebel auszusetzen, welcher die siegelfähige Beschichtung auf den freibleibenden Siegelrandbereich der Verpackungsschale aufbringt, ohne dass es zu einer Verunreinigung des Innenraums derselben kommt. It is also possible to seal off the interior of the packaging tray receiving the packaged goods immediately after deep drawing by temporarily inserting a cover and then expose the entire remaining sealing edge area of the tray to a spray which applies the sealable coating to the remaining sealing edge area of the packing tray without it comes to a contamination of the interior of the same.

Die Aufbringung der siegelfähigen Beschichtung kann nicht nur im Bereich des Siegelrandes erfolgen, sondern auch an anderen gewünschten Bereichen, z.B. auch an den Oberkanten von mehrere Kavitäten der Verpackungsschale abtei- lenden Trennwänden. The application of the sealable coating can not only take place in the region of the sealing edge, but also on other desired areas, e.g. also on the upper edges of several cavities of the packaging shell abti- l dividing walls.

Nach einem bevorzugten Ausführungsbeispiel wird die siegelfähige Beschichtung auf die gewünschten Bereiche der Verpackungsschale aufgedruckt bzw. aufgestempelt. Hierzu wird vorgeschlagen, eine Stempelstation vorzusehen, in welche die Verpackungsschale eingelegt und im Bereich der zu bedruckenden bzw. zu benetzenden Ränder flexibel unterstützt wird. Mittels eines temperierbaren Stempels wird sodann die siegelfähige Beschichtung auf die zu benetzenden Ränder der Verpackungsschale übertragen. Es versteht sich, dass das Aufbringen der siegelfähigen Beschichtung auf die gewünschten Bereiche der Verpackungsschale noch in einer Thermoform- station zur Herstellung der Verpackungsschalen oder auch in einem nachgeschalteten Arbeitsgang an der bereits tiefgezogenen Verpackungsschale durchgeführt werden kann. According to a preferred embodiment, the sealable coating is printed or stamped on the desired areas of the packaging tray. For this purpose, it is proposed to provide a stamping station, in which the packaging tray is inserted and flexibly supported in the area of the edges to be printed or wetted. By means of a heatable stamp, the sealable coating is then transferred to the edges of the packaging shell to be wetted. It is understood that the application of the sealable coating on the desired areas of the packaging shell can still be carried out in a thermoforming station for the production of the packaging trays or in a subsequent operation on the already deep-drawn packaging tray.

Es versteht sich, dass auch noch weitere Aufbringungsverfahren zur Anwendung kommen können, um lediglich den Siegelrandbereich einer Verpackungsschale mit einer siegelfähigerr Beschichtung zu versehen. It goes without saying that even further application methods can be used in order to provide only the sealing edge region of a packaging tray with a sealable coating.

Insbesondere ist vorgesehen, als siegelfähige Beschichtung Polyethylen einzusetzen, welches sich mit den üblichen Siegelfolien auf Basis von Polyethylen zuverlässig versiegeln lässt, oder aber es wird ein Kautschuk eingesetzt. Sofern eine gute Haftung zur ersten Kunststofffolie bei guter Verbindbarkeit mit der zweiten Kunststofffolie gegeben ist, kann es sich um diverse Arten von Naturoder Synthesekautschuken oder Mischungen derselben handeln. In particular, it is envisaged to use as a sealable coating polyethylene, which can be reliably sealed with the usual sealing films based on polyethylene, or it is used a rubber. If there is good adhesion to the first plastic film with good bondability to the second plastic film, it may be various types of natural or synthetic rubbers or mixtures thereof.

Die Verpackungsschale kann sowohl aus geschäumtem als auch ungeschäum- tem Kunststoffmaterial oder Kombinationen derselben bestehen. The packaging tray may consist of both foamed and unfoamed plastic material or combinations thereof.

Eine erfindungsgemäße Vorrichtung zur Herstellung der vorgenannten Verpackungsschalen umfasst eine Stempelstation, in welche die Verpackungsschalen einlegbar sind, mit einem Stempel, der dem Verlauf des Siegelrandes folgende erhabene Stempelbereiche aufweist und der taktweise auf die Ver- packungsschalen aufsetzbar ist, und mittels der erhabenen Bereiche eine Beschichtung aus einem siegelfähigen Material auf den Siegelrand aufbringbar ist. A device according to the invention for the production of the aforementioned packaging trays comprises a stamping station into which the packaging trays can be inserted, with a die which has the following raised stamping areas following the course of the sealing edge and which can be placed intermittently on the packaging trays, and a coating by means of the raised regions from a sealable material on the sealing edge can be applied.

Eine solche Stempelstation kann sowohl in die Tiefziehstation integriert ausgebildet sein als auch der Tiefziehstation nachgeordnet vorgesehen sein. Such a stamping station can be designed both integrated into the thermoforming station and provided downstream of the thermoforming station.

Das Aufbringungsverfahren zeichnet sich insoweit dadurch aus, dass inline oder separat hergestellte Verpackungsschalen taktweise einzeln mittels des niedergehenden Stempels im Bereich des Siegelrandes mit der Beschichtung versehen werden, bevor zu einem späteren Zeitpunkt das Verpackungsgut eingefüllt und die Siegelfolie aufgebracht wird. The application method is characterized insofar by the fact that in-line or separately produced packaging trays cyclically individually by means of the sinking stamp in the region of the sealing edge with the coating be provided before at a later time filled the packaging and the sealing film is applied.

Es versteht sich, dass der Stempel nach jedem Auftrag der Beschichtung auf den Siegelrand in seinen erhabenen Bereichen erneut mit der Beschichtung versehen wird, bevor diese auf die nächste Verpackungsschale im Bereich des Siegelrandes übertragen wird. It is understood that after each application of the coating on the sealing edge in its raised areas, the stamp is again provided with the coating before it is transferred to the next packaging shell in the region of the sealing edge.

Dies kann z.B. durch Benetzen oder durch Aufbringen mittels einer Rakelwalze oder dergleichen erfolgen. Die Beschichtung ist für diesen Zweck bevorzugt flüssig oder viskos ausgeführt. This can e.g. by wetting or by applying by means of a doctor roller or the like. The coating is preferably liquid or viscous for this purpose.

Die erhabenen Bereiche des Stempels sind vorteilhaft mit einer gegenüber der Beschichtung nicht haftenden Oberfläche ausgerüstet. The raised areas of the stamp are advantageously equipped with a non-adhesive surface against the coating.

Weiterhin kann nach einem Vorschlag der Erfindung die Stempelstation Stützflächen für die Abstützung des Siegelrandes auf der dem Stempel gegenüberliegenden Seite aufweisen. Diese Stützfläche ist nach einem weiteren Vorschlag von einer dem Verlauf des Siegelrandes folgenden Schnur gebildet, die aus einem weicheren Material als die erhabenen Bereiche des Stempels gefertigt ist. Als Material für die Schnur kommt beispielsweise ein weiches Silikon oder EPDM infrage und die erhabenen Bereiche des Stempels werden z.B. aus einem demgegenüber härteren und vorzugsweise wärmeleitfähig modifizierten Silikon hergestellt, an dem auch die Beschichtung nicht anhaftet. Furthermore, according to a proposal of the invention, the stamping station may have support surfaces for the support of the sealing edge on the side opposite the stamp. This support surface is formed according to a further proposal of a following the course of the sealing edge cord, which is made of a softer material than the raised portions of the punch. As the material for the cord, for example, a soft silicone or EPDM is suitable, and the raised portions of the punch are e.g. made of a contrast harder and preferably thermally conductive modified silicone to which the coating does not adhere.

Der Stempel kann nach einem Ausführungsbeispiel der Erfindung linear auf die Ver-packungsschale aufgesetzt werden oder alternativ auch als Stempelrad ausgeführt sein, welches an der Oberfläche der Verpackungsschale abrollt. Um einen möglichst homogenen Auftrag der Beschichtung auf den Siegelrand mittels eines Stempels sicherzustellen, weist dieser eine Fase entlang der Ränder der erhabenen Stempelbereiche auf. Es versteht sich, dass anstelle der vorangehend erläuterten Übertragung der Beschichtung mittels Stempel auch die eingangs bereits erwähnten Auftragsarten vorgesehen sein können. Weitere Ausgestaltungen und Einzelheiten der Erfindung werden nachfolgend anhand eines Ausführungsbeispieles näher erläutert. Es zeigen: The stamp can be placed linearly on the Ver-packungsschale according to an embodiment of the invention or alternatively be designed as a stamp wheel, which rolls on the surface of the packaging tray. To ensure the most homogeneous application of the coating on the sealing edge by means of a punch, this has a chamfer along the edges of the raised punch areas. It is understood that instead of the above-described transfer of the coating by means of stamp and the order types already mentioned above may be provided. Further embodiments and details of the invention will be explained in more detail using an exemplary embodiment. Show it:

Figur 1 in schematisierter Darstellung eine Vorrichtung zur Herstellung von Verpackungsschalen gemäß der Erfindung; Figure 1 shows a schematic representation of an apparatus for the production of packaging trays according to the invention;

Figur 2 in schematisierter Darstellung eine Verpackungsschale gemäß der Figure 2 shows a schematic representation of a packaging tray according to the

Erfindung in einer Schnittansicht;  Invention in a sectional view;

Figur 3 eine Einzelheit der Stempelstation gemäß Figur 1. FIG. 3 shows a detail of the stamping station according to FIG. 1.

In der Figur 2 ist eine Verpackungsschale z.B. zur Verpackung von Lebensmitteln dargestellt, die aus einer Folie nach dem Tiefziehverfahren hergestellt ist, dergestalt, dass sie einen Boden 10, Seitenwände 11 und einen oberseitig an die Seitenwände 11 anschließenden umlaufenden Siegelrand 12 umfasst. In Fig. 2, a packaging tray is e.g. for packaging foodstuffs, which is produced from a film by the deep drawing process, such that it comprises a bottom 10, side walls 11 and a peripheral sealing edge 12 adjoining the side walls 11 on the top side.

Die Verpackungsschale 1 ist hierbei aus vorzugsweise transparentem reinen PET hergestellt, indem eine solche reine PET-Folie zu einer solchen Verpackungsschale 1 tiefgezogen wird. Um in an sich bekannter Weise auf eine solche Verpackungsschale 1 nach Befüllen mit dem Verpackungsgut eine Siegelfolie 2 aufzubringen, ist der umlaufende Siegelrand 12, auf dem die Siegelfolie 2 zur Auflage kommt, mit einer streifenartig umlaufenden Beschichtung 3 aus einem mit der Siegelfolie 2 siegelfähigen Material versehen. The packaging tray 1 is in this case made of preferably transparent pure PET, by deep-drawing such a pure PET film to such a packaging tray 1. In order to apply in such a manner known per se to such a packaging tray 1 after filling with the packaged a sealing film 2, the peripheral sealing edge 12 on which the sealing film 2 comes to rest, with a strip-like circumferential coating 3 of a sealable with the sealing film 2 material Mistake.

Dies ist dem Umstand geschuldet, dass Siegelfolien 2 üblicherweise aus einem leicht verschweißbaren Kunststoff, etwa einem Polyolefin, wie Polyethylen hergestellt sind, die sich aber im dargestellten Ausführungsbeispiel einer Verpackungsschale 1 aus reinem PET nicht oder nur sehr schlecht in dem mit S gekennzeichneten Bereich aufsiegeln, d.h. mit dem Siegelrand 12 verschweis- sen lässt. This is due to the fact that sealing foils 2 are usually made of a readily weldable plastic, such as a polyolefin, such as polyethylene, but in the illustrated embodiment, a packaging shell 1 made of pure PET or only very poorly in the with S Set marked area, ie, welded to the sealing edge 12 leaves.

Die Beschichtung 3, die beispielsweise auf Basis eines Polyolefins, wie Poly- ethylen hergestellt ist, wird in der nachfolgend noch geschilderten Weise nach dem Tiefziehen der Verpackungsschale 1 auf den Siegelrand 12 haftfest aufgebracht, so dass anschließend nach Auflegen der Siegelfolie 2 in den mit S gekennzeichneten Bereichen einen thermische Verschweißung mit der Siegelfolie 2 bewirkt werden kann. The coating 3, which is produced for example on the basis of a polyolefin, such as polyethylene, in the manner described below after the thermoforming of the packaging tray 1 on the sealing edge 12 adherent applied so that then after placing the sealing film 2 in the with S characterized areas thermal bonding with the sealing film 2 can be effected.

Auf diese Weise kommt die Verpackungsschale 1 ohne die im Stand der Technik übliche vollflächige Ausbildung der Oberseite der zur Verpackungsschale 1 tiefgezogenen Folie aus einem Polyolefin aus und der Anteil an der Beschichtung 3 aus Polyolefin beträgt auf diese Weise maximal 3 Gew.-%, vorzugsweise maximal 1 ,5 Gew.-% bezogen auf das Gesamtgewicht der Verpackungsschale 1 , so dass diese vollständig in den Produktionskreislauf zurückgegeben werden kann, ohne dass die PET-Folie zur Herstellung der Verpackungsschale 1 an Transparenz einbüßt. Insbesondere ermöglicht der nur im Bereich des Siegelrandes 12 erfolgende Auftrag der polyolefinen Beschichtung 3, dass nach dem Tiefziehen der Folie zur Verpackungsschale 1 ein Stanzgitter der Restfolie zurückbleibt, welches keinerlei Polyolefin-Anteile aufweist, so dass dieses Stanzgitter uneingeschränkt wiederverwertet werden kann. In this way, the packaging shell 1 comes without the usual in the prior art full-surface formation of the top of the packaging shell 1 deep-drawn film of a polyolefin and the proportion of the coating 3 of polyolefin is in this way a maximum of 3 wt .-%, preferably a maximum 1, 5 wt .-% based on the total weight of the packaging shell 1, so that it can be completely returned to the production cycle, without the PET film for the production of the packaging tray 1 loses transparency. In particular, the application of the polyolefin coating 3, which takes place only in the region of the sealing edge 12, enables a stamped grid of the residual foil to remain after deep-drawing the foil to the packaging shell 1, which has no polyolefin components, so that this stamped grid can be fully recycled.

Die Herstellung einer solchen Verpackungsschale 1 gemäß Figur 2 ist schema- tisch in der Figur 1 dargestellt. The production of such a packaging tray 1 according to FIG. 2 is shown schematically in FIG.

Von einer Vorratsrolle 40 wird eine Folie 4 bestehend aus reinem Polyethylen- terephthalat (PET) einer Tiefziehstation 41 zugeführt, die einen taktweise gemäß Pfeil A bewegbaren Tiefziehstempel 411 oberhalb der Folie 4 und eine der Form der Verpackungsschale 1 angepasste Matrize 410 unterhalb der Folie 4 umfasst. From a supply roll 40, a film 4 consisting of pure polyethylene terephthalate (PET) is fed to a thermoforming station 41 which comprises a thermoformable punch 411 above the film 4 and a mold 410 adapted to the shape of the packaging shell 1 underneath the film 4 ,

Die solchermaßen in an sich bekannter Weise tiefgezogenen und aus der Folie 4 ausgestanzten Verpackungsschalen 1 werden sodann gemäß Pfeil B über ein Transportmittel 42 einer Stempelstation 43 zugeführt, die eine Schalenaufnahme 430 umfasst, in welcher die Verpackungsschale 1 eingelegt und z.B. in nicht näher dargestellter Weise mittels eines Vakuumsaugers in Position gehalten wird. Die Schalenaufnahme 430 umfasst, wie im Detail aus der Figur 3 ersicht- lieh, Stützflächen 430a für die flexible Unterstützung bzw. Abstützung des Siegelrandes 12 der eingelegten Verpackungs-schale 1 im Bereich der Unterseite des Siegelrandes 12. The thus deepened in a conventional manner and punched out of the film 4 packaging trays 1 are then according to arrow B on a Transport means 42 of a stamping station 43 supplied, which comprises a tray receptacle 430, in which the packaging tray 1 is inserted and held in position, for example in a manner not shown by means of a vacuum suction. The shell receptacle 430 comprises, as shown in detail in FIG. 3, support surfaces 430a for the flexible support or support of the sealing edge 12 of the inserted packaging tray 1 in the region of the underside of the sealing edge 12.

Die Oberseite des Siegelrandes 12 liegt einem taktweise gemäß Pfeil D be- wegbaren Stempel 431 der Stempelstation 43 gegenüber, wobei dieser Stempel 431 erhabene Bereiche 431 a aufweist, die dem Verlauf des Siegelrandes 12 folgen und vor dem Aufsetzen des Stempel 431 auf die Verpackungsschale 1 mit der Beschichtung 3 benetzt bzw. getränkt werden. Die Beschichtung kann zu diesem Zweck mittels einer Heizung geschmolzen oder mittels eines Lö- sungsmittels verflüssigt werden und wird z.B. mittels einer Rakelwalze auf die den Siegelrand 2 zugewandte Oberfläche der erhabenen Bereiche 431a des Stempels 431 aufgetragen. The upper side of the sealing edge 12 lies opposite a stamp 431 of the stamping station 43 that can be moved in a cyclic manner according to arrow D, this stamp 431 having raised regions 431 a following the course of the sealing edge 12 and before being placed on the packaging shell 1 before the stamp 431 is placed the coating 3 wetted or soaked. The coating may for this purpose be melted by means of a heater or be liquefied by means of a solvent and is e.g. by means of a doctor roller on the sealing edge 2 facing surface of the raised portions 431 a of the punch 431 applied.

Nachfolgend wird, wie aus Figur 3 ersichtlich, der Stempel 431 auf die Ver- packungsschale 1 abgesenkt, wobei die erhabenen Bereiche 431a auf dem Siegelrand 12 der Verpackungsschale zur Anlage kommen und die Beschichtung 3 wird auf den Siegelrand 12 übertragen. Subsequently, as can be seen from FIG. 3, the punch 431 is lowered onto the packaging tray 1, the raised areas 431 a resting on the sealing edge 12 of the packaging tray and the coating 3 being transferred to the sealing edge 12.

Insbesondere wird die Stützfläche 430a der Schalenaufnahme 430 von einer umlaufenden entsprechend der Kontur des Siegelrandes 12 ausgerichteten Schnur aus EPDM gebildet, während die erhabenen Bereiche 431a des Stempels 431 aus einer entsprechend härteren Silikonschnur gebildet werden, an denen die Beschichtung 3 nicht anhaftet. Man erkennt ferner, dass die erhabenen Bereiche 431a entlang ihrer Ränder mit einer Verrundung oder Fase 432 ausgebildet sind, um eine gleichmäßige Übertragung der Beschichtung 3 auf den Siegelrand 12 der Verpackungsschale sicherzustellen. Nachfolgend fährt der Stempel 431 wieder nach oben und die solchermaßen beschichtete und freigegebene Verpackungsschale 1 kann gemäß Pfeil C aus der Vorrichtung entfernt, nachfolgend mit dem Verpackungsgut befüllt und nach Auflegen der Siegelfolie 2 entlang der Bereiche S mit dieser unter Zwischenlage der siegelfähigen Beschichtung 3 verschweißt werden. In particular, the support surface 430a of the tray receptacle 430 is formed by a circumferential EPDM cord aligned along the contour of the seal rim 12, while the raised portions 431a of the punch 431 are formed of a correspondingly harder silicone cord to which the coating 3 does not adhere. It will further be appreciated that the raised portions 431a are formed along their edges with a fillet or bevel 432 to ensure uniform transfer of the coating 3 to the sealing edge 12 of the packaging tray. Subsequently, the punch 431 moves back upwards and the packaging tray 1 coated and released in this way can be removed from the device according to arrow C, subsequently filled with the packaged goods and, after placing the sealing film 2 along the areas S, welded to the latter with the sealable coating 3 interposed therebetween ,

Claims

Patentansprüche: claims: 1. Verpackungsschale (1 ), hergestellt aus einer tiefgezogenen Kunststofffolie mit einem Boden (10), Seitenwänden (1 1) und einem oberseitig der Seitenwände (1 1) umlaufenden Siegelrand (12), auf den eine Siegelfolie (2) auflegbar und mit dem Siegelrand (12) verschweißbar ist, dadurch gekennzeichnet, dass die Verpackungsschale (1) aus einer ersten Kunststofffolie und die Siegelfolie aus einer zweiten Kunststofffolie hergestellt sind, welche Kunststofffolien unter Anwendung von Druck und Wärme nicht miteinander verschweißbar sind und die Verpackungsschale (1 ) nur im Bereich des oberseitig der Seitenwände (1 1) umlaufenden Siegelrandes (12) im mit der Siegelfolie (2) zu verschweißenden Bereich eine streifenartig umlaufende Beschichtung (3) aus einem mit der Siegelfolie (2) verschweißbaren Material aufgebracht ist. 1. Packaging shell (1), made of a thermoformed plastic film with a bottom (10), side walls (1 1) and a top side of the side walls (1 1) encircling sealing edge (12) on which a sealing film (2) can be placed and with the Sealing edge (12) is weldable, characterized in that the packaging shell (1) are made of a first plastic film and the sealing film of a second plastic film, which plastic films are not welded together using pressure and heat and the packaging shell (1) only in Area of the top side of the side walls (1 1) surrounding sealing edge (12) in the area to be welded to the sealing film (2) a strip-like circumferential coating (3) of a sealable with the sealing film (2) material is applied. 2. Verpackungsschale nach Anspruch 1 , dadurch gekennzeichnet, dass die Beschichtung (3) auf Basis eines Polyolefms oder eines Kautschuks ausgebildet ist. 2. Packaging tray according to claim 1, characterized in that the coating (3) is formed on the basis of a polyolefin or a rubber. 3. Verpackungsschale nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die erste Kunststofffolie auf Basis eines Polyethylenterephthalats, Polymilchsäurepolymers oder Polystyrols und die zweite Kunststofffolie auf Basis eines Polyolefins eingesetzt ist. 3. Packaging tray according to claim 1 or 2, characterized in that the first plastic film based on a polyethylene terephthalate, polylactic acid polymer or polystyrene and the second plastic film based on a polyolefin is used. 4. Verpackungsschale nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Beschichtung (3) in einer Menge von maximal 3 Gew.- % bezogen auf das Gesamtgewicht der Verpackungsschale aufgebracht ist. 4. Packaging tray according to one of claims 1 to 3, characterized in that the coating (3) is applied in an amount of at most 3% by weight based on the total weight of the packaging shell. 5. Verpackungsschale nach Anspruch 4, dadurch gekennzeichnet, dass die Beschichtung (3) in einer Menge von maximal 1 ,5 Gew.-% bezogen auf das Gesamtgewicht der Verpackungsschale aufgebracht ist. 5. Packaging tray according to claim 4, characterized in that the coating (3) is applied in an amount of at most 1, 5 wt .-% based on the total weight of the packaging shell. 6. Verpackungsschale nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Boden (10) mit angeformten Trennstegen ausgebildet ist und die Beschichtung (3) auch auf die der Siegelfolie (2) zugewandte Oberseite derselben aufgebracht ist. 6. Packaging tray according to one of claims 1 to 5, characterized in that the bottom (10) is formed with molded dividers and the coating (3) is also applied to the sealing film (2) facing the top thereof. 7. Verpackungsschale nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Boden (10) und die Seitenwände (11) transparent sind. 7. Packaging tray according to one of claims 1 to 6, characterized in that the bottom (10) and the side walls (11) are transparent. 8. Verpackungsschale nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie aus einer geschäumten Kunststofffolie hergestellt ist. 8. Packaging tray according to one of claims 1 to 6, characterized in that it is made of a foamed plastic film. Vorrichtung zur Herstellung einer Verpackungsschale (1) nach einem der Ansprüche 1 bis 7, umfassend eine Stempelstation (43), in welche die Verpackungsschalen (1) einlegbar sind, mit einem Stempel (431), der dem Verlauf des Siegelrandes (12) folgende erhabene Stempelbereiche (431a) aufweist und der taktweise auf die Verpackungsschalen (1) aufsetzbar ist, und mittels der erhabenen Bereiche (431a) eine Beschichtung (3) aus einem siegelfähigen Material auf den Siegelrand (12) aufbringbar ist. Apparatus for producing a packaging tray (1) according to any one of claims 1 to 7, comprising a stamping station (43) into which the packaging trays (1) can be inserted, with a punch (431), the following the course of the sealing edge (12) Stamp areas (431a) and the cyclically on the packaging trays (1) can be placed, and by means of the raised areas (431a) a coating (3) made of a sealable material on the sealing edge (12) can be applied. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass eine Zuführstation (40) für eine erste Kunststofffolie in eine Tiefziehstation (41) zum Tiefziehen der Verpackungsschalen der Stempelstation (43) vorgelagert angeordnet ist. Apparatus according to claim 9, characterized in that a feed station (40) for a first plastic film in a thermoforming station (41) for deep drawing of the packaging trays of the stamping station (43) is arranged upstream. 11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die erhabenen Bereiche (431a) des Stempels (431) mit einer gegenüber der Beschichtung nicht haftenden Oberfläche ausgerüstet sind. 11. The device according to claim 9 or 10, characterized in that the raised portions (431a) of the punch (431) are equipped with a surface not adhering to the coating. 12. Vorrichtung nach einem der Ansprüche 9 bis 11 , dadurch gekennzeichnet, dass die Stempelstation (43) Stützflächen (430a) für die Abstützung des Siegelrandes (12) auf der dem Stempel (431) gegenüberliegenden Seite aufweist. 12. Device according to one of claims 9 to 11, characterized in that the stamping station (43) supporting surfaces (430 a) for the support the sealing edge (12) has on the stamp (431) opposite side. 13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Stützfläche (430a) von einer dem Verlauf des Siegelrandes (12) folgenden Schur gebildet ist, die aus einem weicheren Material als die erhabenen Bereiche (431a) des Stempels (431) gefertigt ist. 13. The apparatus according to claim 12, characterized in that the support surface (430a) of a the course of the sealing edge (12) following Schur is formed, which is made of a softer material than the raised portions (431a) of the punch (431). 14. Vorrichtung nach Anspruch 1 ; dadurch gekennzeichnet, dass die 14. The apparatus of claim 1; characterized in that the Schnur aus einem weichen Silikon oder EPDM und die erhabenen Bereiche (431a) des Stempels (431) aus einem demgegenüber härteren Silikon hergestellt sind.  A soft silicone or EPDM cord and the raised portions (431a) of the punch (431) are made of a relatively harder silicone. 15. Vorrichtung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, dass der Stempel (431) beheizbar ist. 15. Device according to one of claims 9 to 14, characterized in that the punch (431) is heatable. 16. Vorrichtung nach einem der Ansprüche 9 bis 15, dadurch gekennzeichnet, dass der Stempel (431) linear auf die Verpackungsschale (1) aufsetzbar oder als Stempelrad an der Oberfläche der Verpackungsschale (1) abrollbar ausgebildet ist. 16. The device according to one of claims 9 to 15, characterized in that the punch (431) linearly on the packaging shell (1) can be placed or unrolled as Stempelrad on the surface of the packaging shell (1). 17. Vorrichtung nach einem der Ansprüche 9 bis 16, dadurch gekennzeichnet, dass die erhabenen Stempelbereiche (431a) entlang ihrer Ränder mit einer Verrundung oder Fase (432) ausgebildet sind. 17. Device according to one of claims 9 to 16, characterized in that the raised punch areas (431 a) along their edges with a rounding or chamfer (432) are formed.
PCT/EP2011/001655 2010-04-01 2011-04-01 Packaging shell and device for producing same Ceased WO2011120715A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010013854 2010-04-01
DE102010013854.1 2010-04-01

Publications (1)

Publication Number Publication Date
WO2011120715A1 true WO2011120715A1 (en) 2011-10-06

Family

ID=44209996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/001655 Ceased WO2011120715A1 (en) 2010-04-01 2011-04-01 Packaging shell and device for producing same

Country Status (1)

Country Link
WO (1) WO2011120715A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019100738U1 (en) 2019-02-08 2019-02-22 Silver-Plastics Gmbh & Co. Kg packaging tray
EP3542997A1 (en) * 2018-03-23 2019-09-25 KOCH Pac-Systeme GmbH Sealing device and method for sealing a covering material on seal areas of a blister web or a blister hood
EP3747786A1 (en) 2019-06-04 2020-12-09 silver plastics GmbH & Co. KG Packaging tray with profiled flange
US20230000226A1 (en) * 2021-04-15 2023-01-05 Koch Pac-Systeme Gmbh Contact lens package and method and packaging machine for producing same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1747781U (en) * 1957-03-02 1957-06-27 Pelikan Werke Wagner Guenther CLOSURE FOR CONTAINER MADE OF PLASTIC FILM.
US3472723A (en) * 1964-10-14 1969-10-14 Jerome H Lemelson Container manufacture
US3864892A (en) * 1973-05-29 1975-02-11 Mahaffy & Harder Eng Co Automatic packaging method and apparatus with heat-sealing elements having resilient heat conducting members
FR2648792A1 (en) * 1989-06-21 1990-12-28 Lautard Pere Fils Sarl Fab Cha Polystyrene food tray intended for the vacuum packaging of a fresh product by draping a flexible plastic film comprising an opening tongue and its manufacturing method.
EP0440550A1 (en) * 1990-02-02 1991-08-07 ONO Société dite: Method for manufacturing containers having a peelable closure
WO2005120811A1 (en) * 2004-06-11 2005-12-22 Stanelco Rf Technologies Limited Product packaging
WO2006084805A1 (en) * 2005-02-10 2006-08-17 A.W.A.X. Progettazione E Ricerca S.R.L. Hot roller device in particular for heat-sealing thermoplastic materials
WO2008012585A1 (en) * 2006-07-28 2008-01-31 Stanelco Rf Technologies Limited Dielectric welding
GB2471028A (en) * 2010-01-08 2010-12-15 Linpac Packaging Ltd Tray with adhesively sealed lid film

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1747781U (en) * 1957-03-02 1957-06-27 Pelikan Werke Wagner Guenther CLOSURE FOR CONTAINER MADE OF PLASTIC FILM.
US3472723A (en) * 1964-10-14 1969-10-14 Jerome H Lemelson Container manufacture
US3864892A (en) * 1973-05-29 1975-02-11 Mahaffy & Harder Eng Co Automatic packaging method and apparatus with heat-sealing elements having resilient heat conducting members
FR2648792A1 (en) * 1989-06-21 1990-12-28 Lautard Pere Fils Sarl Fab Cha Polystyrene food tray intended for the vacuum packaging of a fresh product by draping a flexible plastic film comprising an opening tongue and its manufacturing method.
EP0440550A1 (en) * 1990-02-02 1991-08-07 ONO Société dite: Method for manufacturing containers having a peelable closure
WO2005120811A1 (en) * 2004-06-11 2005-12-22 Stanelco Rf Technologies Limited Product packaging
WO2006084805A1 (en) * 2005-02-10 2006-08-17 A.W.A.X. Progettazione E Ricerca S.R.L. Hot roller device in particular for heat-sealing thermoplastic materials
WO2008012585A1 (en) * 2006-07-28 2008-01-31 Stanelco Rf Technologies Limited Dielectric welding
GB2471028A (en) * 2010-01-08 2010-12-15 Linpac Packaging Ltd Tray with adhesively sealed lid film

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3542997A1 (en) * 2018-03-23 2019-09-25 KOCH Pac-Systeme GmbH Sealing device and method for sealing a covering material on seal areas of a blister web or a blister hood
US11407545B2 (en) 2018-03-23 2022-08-09 Koch Pac-Systeme Gmbh Sealing device and method for sealing a lid material to sealing areas of a blister web or of a blister cap
DE202019100738U1 (en) 2019-02-08 2019-02-22 Silver-Plastics Gmbh & Co. Kg packaging tray
EP3747786A1 (en) 2019-06-04 2020-12-09 silver plastics GmbH & Co. KG Packaging tray with profiled flange
US20210002018A1 (en) * 2019-06-04 2021-01-07 Silver Plastics Gmbh & Co. Kg Packaging tray with a profiled sealing edge
US12319465B2 (en) * 2019-06-04 2025-06-03 Silver Plastics Gmbh Packaging tray with a profiled sealing edge
US20230000226A1 (en) * 2021-04-15 2023-01-05 Koch Pac-Systeme Gmbh Contact lens package and method and packaging machine for producing same
US12268285B2 (en) * 2021-04-15 2025-04-08 Koch Pac-Systeme Gmbh Method for producing contact lens packages

Similar Documents

Publication Publication Date Title
DE69611544T2 (en) CONTAINER LOCKING ARRANGEMENT
EP1559658A2 (en) Double-layered, lid-shaped stamped closing element.
DE602004009040T2 (en) METHOD AND DEVICE FOR PRODUCING EASILY OPEN PACKS
DE202011110699U1 (en) container
EP2586606B1 (en) Packaging material
DE2541912C2 (en) Containers, in particular packaging containers, as well as a method for producing such a container and a device for carrying out the method
WO2020064393A1 (en) Layer assembly for packaging
EP0946391B1 (en) Method for producing an oxygen-tight packaging, apparatus for carrying out said method
DE69100484T2 (en) Process for the manufacture of containers with a peelable closure.
DE102020107324A1 (en) Thermoforming film packaging
WO2011120715A1 (en) Packaging shell and device for producing same
EP2226181B1 (en) Method and device for printing and processing a plastic film sheet
EP3911580A1 (en) Recycling-friendly blister packaging
EP4011789A1 (en) Package and method of making a package for an item
EP3962825B1 (en) Packaging container comprising an outer cardboard structure and an insert made of plastic film
EP2143548B1 (en) Process of manufacturing of thermoplastically formed arrangements and corresponding foils arrangement
DE4120326C2 (en) Sheet-shaped web coated with plastic foils with a paper web as the carrier material
EP1874510A1 (en) Method for producing a lid comprising a removal opening
AT522332B1 (en) Capsule board
DE102010015237B4 (en) Packaging container with a reclosure and method for producing a packaging container
EP2429916B1 (en) Film for packaging an article
EP3348495A1 (en) Capsule body for a capsule
DE102014101741B4 (en) packaging
DE102023134626A1 (en) Packaging and method for producing a packaging
DE4031809A1 (en) Deep drawn laminated plastic packaging container - has supply polypropylene@ film temporarily thermally bonded for waste sepn. into components for recycling

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11714222

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11714222

Country of ref document: EP

Kind code of ref document: A1