DE2031036C2 - Verfahren zum Herstellen einer aufreißbaren Heißsiegelverbindung - Google Patents

Verfahren zum Herstellen einer aufreißbaren Heißsiegelverbindung

Info

Publication number
DE2031036C2
DE2031036C2 DE2031036A DE2031036A DE2031036C2 DE 2031036 C2 DE2031036 C2 DE 2031036C2 DE 2031036 A DE2031036 A DE 2031036A DE 2031036 A DE2031036 A DE 2031036A DE 2031036 C2 DE2031036 C2 DE 2031036C2
Authority
DE
Germany
Prior art keywords
film
eva
corona discharge
exposed
polyethylene 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.)
Expired
Application number
DE2031036A
Other languages
English (en)
Other versions
DE2031036A1 (de
Inventor
Erik Klampenberg Nielsen
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.)
OTTO NIELSEN EMBALLAGE LYNGBY DK AS
Original Assignee
OTTO NIELSEN EMBALLAGE LYNGBY DK AS
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 OTTO NIELSEN EMBALLAGE LYNGBY DK AS filed Critical OTTO NIELSEN EMBALLAGE LYNGBY DK AS
Publication of DE2031036A1 publication Critical patent/DE2031036A1/de
Application granted granted Critical
Publication of DE2031036C2 publication Critical patent/DE2031036C2/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/142—Pretreatment
    • B05D3/144—Pretreatment of polymeric substrates
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • 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
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
    • 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
    • B29C66/11—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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • 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
    • B29C66/723—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 multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7486—Paper, e.g. cardboard
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • 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
    • B29C66/723—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 multi-layered
    • B29C66/7232—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 multi-layered comprising a non-plastics layer
    • B29C66/72321—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 multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/723—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 multi-layered
    • B29C66/7232—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 multi-layered comprising a non-plastics layer
    • B29C66/72327—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 multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • 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
    • B29C66/723—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 multi-layered
    • B29C66/7232—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 multi-layered comprising a non-plastics layer
    • B29C66/72327—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 multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • 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
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, 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
    • B29K2101/00—Use of unspecified macromolecular compounds 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
    • B29K2105/0085—Copolymers
    • 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
    • B29K2105/0088—Blends of polymers
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium
    • 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
    • B29K2995/005—Oriented
    • 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

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  • Composite Materials (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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Description

Die Erfindung betrifft ein Verfahren zum Herstellen einer aufreißbaren Heißsiegelverbindung einer EVA-modifizierten Polyäthylenfolie mit einem zu dieser gleichen oder unterschiedlichen Substrat.
Folien werden häufig miteinander versiegelt, um z. B. Verbundfolien herzustellen, wobei die Folien mit ihren gesamten Flächen miteinander versiegelt werdet;, oder um einen Bt./.el zu verschließen, wobei sich ein fester, schwer aufre«<barer Verschluß ergibt.
Ferner iss es üblich, flexible Verpackungen aus einer thermoplastischen Folie, beispielsweise von e!ner Rolle, herzustellen, indem die Folie zu einem Beutel oder dergleichen geformt wird, dessen Kanten miteinander verschweißt werden. Auch hier ergibt sich ein sehr fester, nur schwer aufreißbarer Verschluß.
F-s ist auch ein Verfahren bekannt (FR-PS 14 58 436). bei welchem eine Polyäthylenfolie ohne Klebemittel mit einem unterschiedlichen Substrat verbunden wird. Zu diesem Zweck wird eine schmelzflüssige Polyäthylenfolie unter Anwesenheit einer Gasatmosphäre einer Koronaentladung ausgesetzt, wodurch die behandelte Oberfläche aktiviert wird und auf das Substrat aufgebracht werden kann, wobei /ährend der Aufbringung die geschmolzene Polyathylenfolie gekühlt wird. Dieses bekannte Verfahren ist sehr aufwendig, und es führt ebenfalls zu einer festen Verbindung.
F.s ist auch ein Verfahren zum Herstellen von Packungen bekannt (DE-AS 12 36997). bei welchem eine Polyathylenfolie um das Verpackungsgut gelegt und beispielsweise durch U-V-Bestrahlung einseitig oxidiert wird, wodurch das Material so beeinträchtigt wird, daß eine Verschweißung verhältnismäßig lange Zeit erfordert, so daß durch Wahl einer bestimmten Schweiß/reit eine Schweißnaht mit gewünschter Festigkeit erreichbar ist. Hier bereitet die Einhaltung einer vorbestimmten Schweißdauer Schwierigkeiten, so daß die Gefahr besteht, daß die Verbindung entweder /u fest und damit schwer lösbar oder zu wenig fest wird. Außerdem ist durch die verlängerie Schweißzeit de EHG-Verbrauch erheblich.
Fs ist bekannt (Druckschrift »Plastics« Nov. I9b4. Seite 80. und Zeitschrift »Kautschuk und (iummi«. I9b1. Seiten WT 21- WT 32. insbesondere Seite WT 23. Ab- $a>/ ?. und Seite WT 24. rechte Spalte, letzter Absatz), dall Athvlen-Vinylacetat-C'opolymere mit einem Vinylacetat-Gehalt von 20—30% ausgezeichnete Heißkleber sind, die sehr leicht hcißsiegelbar sind und die als Schichtharze verwendbar sind, wobei sie eine hohe Festigkeit aufweisen.
Es sind ferner Polyäthylenfolien für Verpackungszwecke bekannt, die einen Zusatz von nur einigen Prozent an Äthylvinylacetat (F.VA) enthalten, wodurch die Folie eine größere Biegbarkeit und Dehnbarkeil erhält. Derartige Folien lassen sich weitgehend wie übliche reine Polväthvlcnfolien miteinander verschwel Bert, wodurch sich die übliche feste Verbindung ergibt.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen einer aufreißbaren Heißsiegelverbindung der eingangs genannten Art zu schaffen, mit welchem eine Versiegelung mit sich widersprechenden Eigenschaften, nämlich einerseits eine ausreichend feste i-nd widerstandsfähige andererseits aber aufreißbars Heißsiegelverbindung erreichbar ist. Dies wird erfindungsgemäß dadurch erreicht, daß die Verbin-Ki dungsfläche der EVA-modifizierten Polyäi'iylenfolie vor dem Versiegeln einer Koronaentladung ausgesetzt wird. Hierdurch wird das in der Polyäthylenfolie enthaltene Vinylacetat auf die der Koronaentladung ausgesetzte Oberfläche gebracht, d. h. es bildet sich hier is eine sehr dünne, gegenüber der übrigen Folie mit Vinylacetat angereicherte Schicht, die einerseits eine ausreichend feste Heißsiegelverbindung ermöglicht, die aber andererseits wegen ihrer geringen Dicke eine Trennung ermöglicht, ohne daß die Folie dabei beschädigt wird.
Ausführungsformen der Erfindung sind in den Zeichnungen beispielsweise dargestellt, und zwar zeigt Fig. 1 die Herstellung einer aus drei Schichten bestehenden Verbundfolie.
F i g. 2 das Beschichten einer einer Koronaentladung ausgesetzten Polyäthylenfolie, die in einem mit einer Schlitzdüse versehenen Extruder hergestellt wird.
F i g. 3 die Hen «llung einer Verbundfolie aus zwei gleichen oder zwei nicht gleichen Folien, zwischen die eine EVA-modifizierte Polyathylenfolie eingefügt ist.
F i g. 4a eine zweischichtige Verbundfolie, an die eine dritte Folie so angebracht ist. daß sie abgerissen werden kann, und zwar vor dem Schweißvorgang.
Fig. 4b das Gleiche wie 4a. jedoch nach dem Schweißvorgang.
F i g. 4c das Gleiche wie 4b. nachdem die dritte Folie abgerissen wurde.
Die Voi richtung der F i g. 1 dient dazu, eine Verbundfolie die aus drei untereinander verbundenen «o Folien besteht, herzustellen. Die Figur zeigt eine Rolle mit Folienmaterial 11. die an einer IJüerzugsvorrichtung 13. zum Beifügen eines Klebstoffes vorbeigeführt wird. Die Folie läuft dabei über eine Führungsrolle 12. wird bei 14 getrocknet, bevor sie über eine weitere Führungsrolle 15 geführt wird. Eine weitere Folie, die einen Teil der Verbundfolie bildet, wird von einer Rolle 17 zugeführt und mit der Folie 11 zwischen Druckwalzen 16 eingeführt. Schließlich führt eine Rolle 19 eine EVA-modifizierte Polyathylenfolie zu. die an der Seite. die an die von de.- Rolle 17 kommende Folie angrenzt und einer Koronaentladung ausgesetzt wurde, wobei die Polyathylenfolie mit den beiden anderen Folien zwischen zwei Druckwalzen 18 gebracht wird, worauf die Folien der Wärme eines Erhitzers 10 ausgesetzt wird. Daraufhin wird die Verbundfolie auf eine Rolle 11' gewickelt. Die Verwendung einer EVA-modifizierten Polyathylenfolie bewirkt, daß das Polyäthylen nicht so stark erwärmt zu werden braucht, bis es schmilzt, da die Adhäsion durch den EVA Gehalt erreicht wird, der durch die Koronaentladung aktiviert wurde, wobei sich der EVA-Gehalt in einer adhäsiven Schicht an der behandelten Seite der folie anreichert.
F i g. 2 zeigt, wie eine einer Koronaentladung ausgesetzte EVA-modifizierte Polyathylenfolie 24 mit hr> einer aus einem F.\truder 21 kommenden Folie verbunden werden kann. In diesem Fall ist es möglich, die in der aus dem Extruder kommenden Folie 22 vorhandene Wärme auszunutzen, bevor die Folie
abgekühlt wird. Sie k.i·;··. jher auch -,!bgekiihit und später wieder erwärmt werden. In beiden Fällen besteht die Möglichkeit, mit Hilfe der begrenzten Wärmemenge in dieser Folie 22, diese zum Haften an der einer Koronaentladung ausgesetzten Seite einer EVA-r.uxlifizierien Polyäthylenfolie 24 zu bringen. Dies erfolgt mit Hilfe der Druckwalzen 23 und 23. Die Veibiinduj'itr win;! dann auf die Rolle 26 aufgewickelt.
Die im Extruder hergestellte Folie kann aus Polyamid, Polypropylen, PVC. Polyäthylen, Polystyrol oder einem anderen thermoplastischen Kunststoff bestehen.
Es is; ί'.ίί'-crn-m möglich, wie aus Fig. 3 zu ersehen ist, zwei gleichartige oder nicht gleichartige Folien durch eine eingefügte EVA-modifizierte Polyäthylenfolie zu verbinden, die an beiden Seilen einer Koronaentladung ausgesetzt worden ist. Daraufhin lassen sich diese drei Folien miteinander versiegeln, wobei sie einer beschränkten Wärmemenge ausgesetzt werden, da die beidseitig einer Koronaentladung ausgesetzte EVA-modifizierte Polyäthylenfolie als Klebemittel zwischen den beiden anderen Schichten der Verbundfolie wirkt. F i g. 3 zeigt zwei Folier.rollen 31,33 sowie eine Rolle 32 mit einer auf beiden Seiten einer Koronaenthdung ausgesetzten EVA-modifizierten Polyäthylenfolie. Die Folien der Rollen 31, 32 und 33 werden zwischen zwei Druckwalzen 34 gebracht und der Wärme eines Erhitzers 35 ausgesetzt. Die so gebildete dreifache Verbundfolie wird dann auf eine Rolle 36 aufgesvickelt.
Die F i g. 4a, 4b und 4c zeigen ein Verpackungsmaterial, das eine Folie 41 enthält. Der schraffierte Teil stellt eine EVA-modifizierte Polyäthylenfolie dar. welche an der dem unschraffierten Teil gegenüberliegenden Seite der Folie einer Koronaentladung ausgesetzt wurde, wobei die der Koronaentladung ausgesetzte Seite der Folie nut einer anderen Folie 42 verbunden wird, wobei durch eine unter Druck erfolgende geeignete Wärmebehandlung eine aufreißbare Schweiüung erreicht wird. In diesem Fall kann eine geeignete Wärmebehandlung bei einer Temperatur von I35°C in einer /"tlispann·* von 0,5 see und einem Druck von 2,8 bui liegen. Beispiele für gc.'vgneie Werkstoffe, um eine aufreißbare Schweißnaht in Verbindung mit einer einer Koronaentladung ..;i;■·£< setzten Seite einer EVA-modifizierten Polyü;iiylenfolie zu bilden, können eine mit Zellulosenitrat beschichtete Zellulosefolie, eine unbeschichtete PoIj
lu esterfolie, eine PVDC beschichtete Polyesterfolie, eine PVDC beschichtete, gereckte Polypropylenfolie, eine Polyathylenfüiie mit normaiei niedriger Dich'e in unbehandeltem Zustand, eine einer Koronaentladung ausgesetzte Polyäthylenfolie mit normaler niedriger Dichte, eine unbehandelte Polyäthylenfolie großer Dichte, Aluminiumfolien, harte wie weiche Papierarten wie i. B. Papyrine, Polyvinylchlorid (PVC), oder eine einer Koronaentladung ausgesetzte EVA-modifizierte Polyäthylenfolie sein. .
Die Festigkeit der erreichten Schweißungen einer Polyamidfolie »nit einer einer Koronaentladung ausgesetzten Polyäthylenfolie bzw. einer EV modifizierten Polyäthylenfoiie wurde gemessen und erre::nte dabei die folgenden Werte:
30 Zeit Tempe Druck Schweißungsfestigkeit in bar EVA-modi-
ratur unmodifizierter fizierter
5 see. 120° C 2,8 bar Polyäihvlen- Polyäthylen
Schweißungsparameter 35 5 see. 135° C 2,8 bar film film
5 see. 150°C 2,8 bar
0,67-0.79
0,069-0,079 0,79-0,82
0,079-0,089 0.98-1.18
0,089
Hierzu 2 Blatt Zeichnungen

Claims (1)

  1. Patentanspruch:
    Verfahren zum Herstellen einer aufreiQbaren Heißsiegelverbindung einer EVA-modifizierten Polyäthylenfolie mit einem zu dieser gleichen oder unterschiedlichen Substrat, dadurch gekennzeichnet, daß die Verbindungsfläche der EVA-modifizierten Polyäthylenfolie vor dem Versiegeln einer Koronaentladung ausgesetzt wird.
DE2031036A 1969-06-24 1970-06-23 Verfahren zum Herstellen einer aufreißbaren Heißsiegelverbindung Expired DE2031036C2 (de)

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DK340669AA DK128061B (da) 1969-06-24 1969-06-24 Fremgangsmåde til at forbinde lag af folie.

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DE (1) DE2031036C2 (de)
DK (1) DK128061B (de)
FI (1) FI54445C (de)
FR (1) FR2051257A5 (de)
GB (1) GB1290409A (de)
NL (1) NL7009174A (de)
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FR2218194A1 (en) * 1973-02-19 1974-09-13 Bernardy Claude Multilayer coloured peel tapes - assembled from individual adhesive coated tapes in one operation
SE7802716L (sv) * 1978-03-09 1979-09-10 Grenges Weda Ab Vidheftande skinfilm
JPS5796908A (en) * 1980-11-20 1982-06-16 Uni Charm Corp Separate packing structure of sanitary good and its packing method
DE3216097C2 (de) * 1982-04-30 1990-05-10 Feldmühle AG, 4000 Düsseldorf Mehrlagige Folie aus einer Trägerfolie und einer durch Kaschieren damit verbundenen Verbundfolie und deren Verwendung
DE3315652C2 (de) * 1983-04-29 1986-04-30 Feldmühle AG, 4000 Düsseldorf Tiefzieh-Verbundfolie und ihre Verwendung für die Herstellung von Vakuumtiefziehpackungen zur Aufnahme von Kunststoffbeuteln mit Blutinfusionslösung
DE3315582C2 (de) * 1983-04-29 1986-04-24 Feldmühle AG, 4000 Düsseldorf Tiefziehfolie
EP0227293A3 (de) * 1985-12-05 1988-02-03 General Binding Corporation Verfahren für Schichtstoffherstellung
AT397062B (de) * 1991-08-08 1994-01-25 Harald Dipl Ing Dr Schobermayr Verfahren zur herstellung von formkörpern aus einer mehrzahl orientierter kunststoffolien und anlage zur durchführung des verfahrens
JP4792232B2 (ja) * 2005-02-25 2011-10-12 東海ゴム工業株式会社 燃料電池用ホース

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GB1074663A (en) * 1964-08-31 1967-07-05 Nat Distillers Chem Corp Improvements in polyolefin substrate coatings
DE1236997B (de) * 1965-07-14 1967-03-16 Lohmann K G Verfahren zum Herstellen von Packungen, bei dem Kunststoffolie um das Verpackungsgutgelegt und dann verschweisst wird

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NL7009174A (de) 1970-12-29
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FI54445B (fi) 1978-08-31
CH507080A (de) 1971-05-15
FR2051257A5 (de) 1971-04-02
DK128061B (da) 1974-02-25
DE2031036A1 (de) 1971-01-28
SE363271B (de) 1974-01-14

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