FR2445212A1 - COEXTRUDED MULTILAYER POLYMERIC STRUCTURE AND METHOD FOR PRODUCING THE SAME - Google Patents

COEXTRUDED MULTILAYER POLYMERIC STRUCTURE AND METHOD FOR PRODUCING THE SAME

Info

Publication number
FR2445212A1
FR2445212A1 FR7931848A FR7931848A FR2445212A1 FR 2445212 A1 FR2445212 A1 FR 2445212A1 FR 7931848 A FR7931848 A FR 7931848A FR 7931848 A FR7931848 A FR 7931848A FR 2445212 A1 FR2445212 A1 FR 2445212A1
Authority
FR
France
Prior art keywords
polymeric structure
multilayer polymeric
coextruded multilayer
producing
same
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.)
Withdrawn
Application number
FR7931848A
Other languages
French (fr)
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.)
GCP Products UK Ltd
WR Grace and Co Conn
Original Assignee
WR Grace Ltd
WR Grace and Co Conn
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 WR Grace Ltd, WR Grace and Co Conn filed Critical WR Grace Ltd
Publication of FR2445212A1 publication Critical patent/FR2445212A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • 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
    • B29K2995/0049—Heat shrinkable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/72—Cured, e.g. vulcanised, cross-linked
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/12—Pressure
    • 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
    • B32B2439/00—Containers; Receptacles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne une structure polymérique multicouche coextrudée. Selon l'invention, elle se compose d'une couche réticulée contenant un agent favorisant la réticulation par irradiation et d'une couche pouvant être scellée à la chaleur; on utilise deux extrudeuses 2, 3, alimentant une filière de coextrusion 4, un bain de refroidissement 8, une voute d'irradiation 20 abritant une source d'électrons 22, un bain chaud 30. L'invention s'applique notamment à la formation de pellicules pour l'emballage.The invention relates to a coextruded multilayer polymeric structure. According to the invention, it consists of a crosslinked layer containing an agent promoting crosslinking by irradiation and a layer which can be heat sealed; two extruders 2, 3 are used, supplying a coextrusion die 4, a cooling bath 8, an irradiation vault 20 housing an electron source 22, a hot bath 30. The invention applies in particular to training. of film for packaging.

FR7931848A 1978-12-28 1979-12-27 COEXTRUDED MULTILAYER POLYMERIC STRUCTURE AND METHOD FOR PRODUCING THE SAME Withdrawn FR2445212A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US97385078A 1978-12-28 1978-12-28

Publications (1)

Publication Number Publication Date
FR2445212A1 true FR2445212A1 (en) 1980-07-25

Family

ID=25521290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931848A Withdrawn FR2445212A1 (en) 1978-12-28 1979-12-27 COEXTRUDED MULTILAYER POLYMERIC STRUCTURE AND METHOD FOR PRODUCING THE SAME

Country Status (10)

Country Link
JP (1) JPS5595568A (en)
AR (1) AR219850A1 (en)
AU (1) AU5268679A (en)
BR (1) BR7908527A (en)
CA (1) CA1125229A (en)
DE (1) DE2951138A1 (en)
FR (1) FR2445212A1 (en)
GB (1) GB2040804A (en)
NZ (1) NZ192133A (en)
ZA (1) ZA795410B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492770A1 (en) * 1980-10-28 1982-04-30 Bean Gerard MULTI-LAYERED FILM FOR CONSTITUTING A HEAT-SHRINKABLE WRAP
FR2530539A1 (en) * 1982-07-26 1984-01-27 Grace W R Ltd PASTEURIZABLE AND RETRACTABLE COOKING FILMS AND PROCESS FOR THEIR MANUFACTURE
NL8303617A (en) * 1982-12-15 1984-07-02 Grace W R & Co TUBULAR FOIL WITH A SEALING LAYER OF ORDERLESS PROPENE-ETHENE-COPOLYMER.
NL8402104A (en) * 1983-07-01 1985-02-01 Kureha Chemical Ind Co Ltd HEAT-RESISTANT AND OIL-RESISTANT, LAYERED FILM, AND A METHOD OF MANUFACTURING THAT.
EP0322196A2 (en) * 1987-12-21 1989-06-28 W.R. Grace & Co.-Conn. Oriented polymeric films and process for enhanced orientation of polymeric films
EP0447988A1 (en) * 1990-03-23 1991-09-25 W.R. Grace & Co.-Conn. Multilayer thermosealing film for packaging
US5106545A (en) * 1987-12-21 1992-04-21 W. R. Grace & Co.-Conn. Oriented polymeric films and process for enhanced orientation of polymeric films
EP0613772A1 (en) * 1993-01-29 1994-09-07 American National Can Company Tough heat shrinkable film structures

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1212533B (en) * 1982-10-19 1989-11-30 Montedison Spa FILM FOR PACKAGING AND PROCEDURE FOR ITS PREPARATION.
JPS60154034A (en) * 1984-01-23 1985-08-13 Toa Nenryo Kogyo Kk Stretched polyethylene film
US4740400A (en) * 1986-03-27 1988-04-26 Viskase Corporation Tinted heat-shrinkable multilayer films comprising a vinylidene chloride-vinyl chloride copolymer
DE3681790D1 (en) * 1986-04-15 1991-11-07 Grace W R & Co MULTILAYER PACKAGING FILM.
JPS62273849A (en) * 1986-05-23 1987-11-27 呉羽化学工業株式会社 Heat-shrinkable composite film and manufacture thereof
US4961154A (en) * 1986-06-03 1990-10-02 Scitex Corporation Ltd. Three dimensional modelling apparatus
EP0273059B1 (en) * 1986-06-19 1991-09-11 Asahi Kasei Kogyo Kabushiki Kaisha Heat shrinkable cylindrical laminated film
US4839235A (en) * 1986-06-30 1989-06-13 W. R. Grace & Co. Oxygen barrier film
US4797235A (en) * 1987-04-16 1989-01-10 W. R. Grace & Co. Process for enhanced orientation of polymeric films
US4963419A (en) * 1987-05-13 1990-10-16 Viskase Corporation Multilayer film having improved heat sealing characteristics
US5075156A (en) * 1988-03-15 1991-12-24 Asahi Kasei Kogyo Kabushiki Kaisha Multi-layered crosslinked ethylenic resin film, a process for production thereof and a method of applying said film
US5055328A (en) * 1989-06-16 1991-10-08 Viskase Corporation Differentially cross-linked multilayer film
US5993922A (en) * 1996-03-29 1999-11-30 Cryovac, Inc. Compositions and methods for selectively crosslinking films and improved film articles resulting therefrom
US6743523B1 (en) 2000-03-16 2004-06-01 Baxter International Inc. Multiple layer film of a new non-PVC material
DE10149371A1 (en) * 2001-10-06 2003-04-24 Dornier Gmbh Lindauer Method and device for processing multilayer plastic films

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1372805A (en) * 1962-10-04 1964-09-18 Raychem Corp Object exhibiting elastic memory, its manufacturing process and its applications
GB1287143A (en) * 1969-01-30 1972-08-31 Arthur Charlesby Novel crosslinked polymer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1372805A (en) * 1962-10-04 1964-09-18 Raychem Corp Object exhibiting elastic memory, its manufacturing process and its applications
GB1287143A (en) * 1969-01-30 1972-08-31 Arthur Charlesby Novel crosslinked polymer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492770A1 (en) * 1980-10-28 1982-04-30 Bean Gerard MULTI-LAYERED FILM FOR CONSTITUTING A HEAT-SHRINKABLE WRAP
EP0051034A1 (en) * 1980-10-28 1982-05-05 Gérard Bean Multilayer foil to be used as a heat-shrinkable covering
FR2530539A1 (en) * 1982-07-26 1984-01-27 Grace W R Ltd PASTEURIZABLE AND RETRACTABLE COOKING FILMS AND PROCESS FOR THEIR MANUFACTURE
NL8303617A (en) * 1982-12-15 1984-07-02 Grace W R & Co TUBULAR FOIL WITH A SEALING LAYER OF ORDERLESS PROPENE-ETHENE-COPOLYMER.
FR2541183A1 (en) * 1982-12-15 1984-08-24 Grace W R Ltd TUBULAR FILM HAVING A SEALING LAYER IN A STATIC COPOLYMER OF PROPYLENE ETHYLENE AND PROCESS FOR THE PRODUCTION THEREOF
NL8402104A (en) * 1983-07-01 1985-02-01 Kureha Chemical Ind Co Ltd HEAT-RESISTANT AND OIL-RESISTANT, LAYERED FILM, AND A METHOD OF MANUFACTURING THAT.
EP0322196A2 (en) * 1987-12-21 1989-06-28 W.R. Grace & Co.-Conn. Oriented polymeric films and process for enhanced orientation of polymeric films
EP0322196A3 (en) * 1987-12-21 1990-09-12 W.R. Grace & Co.-Conn. Oriented polymeric films and process for enhanced orientation of polymeric films
US5106545A (en) * 1987-12-21 1992-04-21 W. R. Grace & Co.-Conn. Oriented polymeric films and process for enhanced orientation of polymeric films
EP0447988A1 (en) * 1990-03-23 1991-09-25 W.R. Grace & Co.-Conn. Multilayer thermosealing film for packaging
EP0613772A1 (en) * 1993-01-29 1994-09-07 American National Can Company Tough heat shrinkable film structures
US6051292A (en) * 1993-01-29 2000-04-18 American National Can Company Heat shrinkable film structures with improved sealability and toughness
EP1018423A1 (en) * 1993-01-29 2000-07-12 American National Can Company Tough heat shrinkable film structures

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ZA795410B (en) 1980-09-24
JPS5595568A (en) 1980-07-19
AR219850A1 (en) 1980-09-15
AU5268679A (en) 1980-07-03
NZ192133A (en) 1981-03-16
DE2951138A1 (en) 1980-07-17
CA1125229A (en) 1982-06-08
GB2040804A (en) 1980-09-03
BR7908527A (en) 1980-10-07

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