GB1074256A - Process for the manufacture of a weldable oriented polypropylene film - Google Patents

Process for the manufacture of a weldable oriented polypropylene film

Info

Publication number
GB1074256A
GB1074256A GB30451/64A GB3045164A GB1074256A GB 1074256 A GB1074256 A GB 1074256A GB 30451/64 A GB30451/64 A GB 30451/64A GB 3045164 A GB3045164 A GB 3045164A GB 1074256 A GB1074256 A GB 1074256A
Authority
GB
United Kingdom
Prior art keywords
film
weldable
coating
polypropylene film
stretched
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
GB30451/64A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle 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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB1074256A publication Critical patent/GB1074256A/en
Expired 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • 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
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/052—Forming heat-sealable coatings
    • 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
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

Weldable oriented polypropylene film is produced by (1) coating an unstretched polypropylene film on one or both sides with a plastics material which can be welded after it has been stretched and can be stretched at least to the same extent as the polypropylene film and softens below about 150 DEG C, and then stretching the coated film at least uniaxially by at least 300%; (2) stretching a polypropylene film in its longitudinal direction, coating the film on one or both of its surfaces with a plastics material which can be welded after it has been stretched and can be stretched at least to the same extent as the polypropylene film and softens below about 150 DEG C, and then stretching the coated film in the transverse direction by at least 300%; or (3) providing two longitudinally stretched polypropylene films on one surface with a weldable coating, bonding the uncoated sides of the two films together e.g. with polyisobutylene, and transversely stretching the compound film carrying weldable coating on both outer surfaces. The thickness of the plastics coating is so selected that after the coated material has been stretched the plastics coating is at least 1 micron thick. The plastics coating may be produced from a solution, dispersion or melt, or is in the form of a film laminated with the unstretched or the longitudinally stretched polypropylene film. The two sides of the unstretched film may be coated with two different plastics materials prior to stretching in process (1). The two sides of the longitudinally stretched film may be coated with two different plastics materials in process (2). The weldable film may be laminated to the polypropylene film by passage between two rubber rollers, one of which may be heated, and then through a hot zone to unite the films by softening or melting of the weldable material with the polypropylene film, or the polypropylene film may first be coated with adhesive and then laminated with the weldable film at an elevated temperature. The weldable plastics material may be high pressure polyethylene and copolymers of vinylidene chloride e.g. with acrylonitrile, or methyl methacrylate and itaconic acid. A second coating of a welded plastic may be applied to produce a relatively thick weldable layer.
GB30451/64A 1963-07-20 1964-08-04 Process for the manufacture of a weldable oriented polypropylene film Expired GB1074256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK50292A DE1184071B (en) 1963-07-20 1963-07-20 Process for producing a weldable, oriented polypropylene film

Publications (1)

Publication Number Publication Date
GB1074256A true GB1074256A (en) 1967-07-05

Family

ID=7225566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30451/64A Expired GB1074256A (en) 1963-07-20 1964-08-04 Process for the manufacture of a weldable oriented polypropylene film

Country Status (3)

Country Link
BE (1) BE650722A (en)
DE (1) DE1184071B (en)
GB (1) GB1074256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214314A1 (en) * 1985-08-24 1987-03-18 Kohjin Co., Ltd. Heat shrinkable laminated packaging material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1264338A (en) * 1969-07-15 1972-02-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214314A1 (en) * 1985-08-24 1987-03-18 Kohjin Co., Ltd. Heat shrinkable laminated packaging material

Also Published As

Publication number Publication date
DE1184071B (en) 1964-12-23
BE650722A (en)

Similar Documents

Publication Publication Date Title
US3454442A (en) Art of thermally joining materials
US3075868A (en) Method of bonding polymer plastics to substrate webs of dissimilar materials
US3008862A (en) Extruded bead sealing
US5284540A (en) Method of making laminates from polyethylene foils and the like
JPH0150596B2 (en)
JPS5770520A (en) Liquid crystal element
US3325332A (en) Method for heat sealing plastic film to plastic foam
GB814739A (en) Production of laminated structures
US3620898A (en) Heat shrinkable cushioning material
US3471353A (en) Method of uniting plies of an oriented sheet material
US3575793A (en) Laminate of polypropylene,saran and cellophane and method of making same
GB1078813A (en) Heat seal coated polyester films
GB1300097A (en) Adhesion of elastomers
GB1074256A (en) Process for the manufacture of a weldable oriented polypropylene film
DK0689505T3 (en) Process for the preparation of a metal-plastic composite material, metal-plastic composite materials made by progress
GB1055803A (en) Improved thermoplastic films
US3388019A (en) Lamination of oriented film to paper
US3215578A (en) Thermoplastic coated materials and the method of and apparatus for forming the same
GB964539A (en) Production of coated sheet materials
US3365348A (en) Film laminating method
US3524787A (en) Apparatus for the manufacture of plastic laminates
US3271225A (en) Labeling process
JP3109891B2 (en) Manufacturing method of water-resistant wood board
JPS57123020A (en) Method of bonding synthetic resin molded item
GB913289A (en) Process for the production of laminated structures and particularly laminated films and foils