JPS57199626A - Manufacture of heat-shrinkable plastic film - Google Patents

Manufacture of heat-shrinkable plastic film

Info

Publication number
JPS57199626A
JPS57199626A JP56084129A JP8412981A JPS57199626A JP S57199626 A JPS57199626 A JP S57199626A JP 56084129 A JP56084129 A JP 56084129A JP 8412981 A JP8412981 A JP 8412981A JP S57199626 A JPS57199626 A JP S57199626A
Authority
JP
Japan
Prior art keywords
heat
crosslinkability
film
thickness
manufacture
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.)
Pending
Application number
JP56084129A
Other languages
Japanese (ja)
Inventor
Masahiro Shimoyamada
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP56084129A priority Critical patent/JPS57199626A/en
Publication of JPS57199626A publication Critical patent/JPS57199626A/en
Pending 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • B29C61/0616—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—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
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To improve the heat-sealability, by laminating two plastic films having different crosslinkability and irradiating with an electron beam such that the difference in gel fractions of the laminates is at least 30-50%. CONSTITUTION:An intermediate-density polyethylene as a layer having low crosslinkability, and an ethylene/vinyl acetate copolymer as one having high crosslinkability are extruded by co-extrusion two-layer T-die method to a thickness of 100mu. The thickness ratio of intermediate density polyethylene/ethylene- vinyl acetate copolymer is 1/3. After this film is irradiated with an electron beam having an energy of 175keV at a dose of 10Mrad, it is stretched by heating to obtain a film having a thickness of 20mum. This resulting film is good in the heat resistance, and can be shrinked uniformly by heating.
JP56084129A 1981-05-30 1981-05-30 Manufacture of heat-shrinkable plastic film Pending JPS57199626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084129A JPS57199626A (en) 1981-05-30 1981-05-30 Manufacture of heat-shrinkable plastic film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084129A JPS57199626A (en) 1981-05-30 1981-05-30 Manufacture of heat-shrinkable plastic film

Publications (1)

Publication Number Publication Date
JPS57199626A true JPS57199626A (en) 1982-12-07

Family

ID=13821893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084129A Pending JPS57199626A (en) 1981-05-30 1981-05-30 Manufacture of heat-shrinkable plastic film

Country Status (1)

Country Link
JP (1) JPS57199626A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64500180A (en) * 1986-06-19 1989-01-26
US4891173A (en) * 1987-09-09 1990-01-02 Toa Nenryo Kogyo Kabushiki Kaisha Process for producing a crosslinked and oriented polyethylene film
EP0364924A3 (en) * 1988-10-18 1991-10-09 RXS Schrumpftechnik-Garnituren GmbH Heat-shrinkable sleeve with a low tear tendency

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839581A (en) * 1971-09-21 1973-06-11
JPS4872265A (en) * 1971-12-29 1973-09-29
JPS55118859A (en) * 1979-03-07 1980-09-12 Asahi Dow Ltd Cold high orientation multilayer film and its preparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839581A (en) * 1971-09-21 1973-06-11
JPS4872265A (en) * 1971-12-29 1973-09-29
JPS55118859A (en) * 1979-03-07 1980-09-12 Asahi Dow Ltd Cold high orientation multilayer film and its preparation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64500180A (en) * 1986-06-19 1989-01-26
US4891173A (en) * 1987-09-09 1990-01-02 Toa Nenryo Kogyo Kabushiki Kaisha Process for producing a crosslinked and oriented polyethylene film
EP0364924A3 (en) * 1988-10-18 1991-10-09 RXS Schrumpftechnik-Garnituren GmbH Heat-shrinkable sleeve with a low tear tendency

Similar Documents

Publication Publication Date Title
DE2643498C2 (en) Process for the production of a laminate packaging film
GB1516047A (en) Polymeric laminate film and method of preparing it
CA2041351C (en) High density polyethylene shrink film
DE3650769D1 (en) Three-layer plastic films, processes for their production, and packaging made therefrom
GB1209392A (en) Laminated films and method of producing same
JPS5382888A (en) Co-extruded five-layered drawn cylindrical film and its manufacture
AU573003B2 (en) Multi-layer polyolefin shrink film
AU611268B2 (en) Multi-layered crosslinked ethylenic resin film, a process for production thereof and a method of applying said film
JPS6011342A (en) Heat-resistant laminate and manufacture thereof
EP0619779B1 (en) Crosslinked acrylic sheet with enhanced vacuum molding attributes
JPH0226860B2 (en)
JPH0321341B2 (en)
HU910975D0 (en) Oriented foil of high transparency and brightness
ES340331A1 (en) Improvements relating to Shrink Packaging.
ES8608550A1 (en) Stretched multilayer polypropylene films.
JPH038658B2 (en)
RU97121182A (en) METHOD FOR PRODUCING MULTI-LAYER THERMOUSTAINABLE ADHESION MATERIAL BASED ON "DONRAD-EXTRA" POLYOLEFINS
JPS5712612A (en) Stretching method for film of saponified ethylene-vinyl acetate copolymer
JPS57137117A (en) Stretched film for package
JPS6174820A (en) Polyethylene oriented film
JPS54137081A (en) Manufacturing of laminated insulation paper
JPS5478743A (en) Film of crosslinked polyethylene
JPS57178832A (en) Manufacture of laminate
GB1287143A (en) Novel crosslinked polymer
JPH0414188Y2 (en)