GB914411A - Manufacture of shrinkable films of polyolefins or copolymers thereof - Google Patents

Manufacture of shrinkable films of polyolefins or copolymers thereof

Info

Publication number
GB914411A
GB914411A GB3747659A GB3747659A GB914411A GB 914411 A GB914411 A GB 914411A GB 3747659 A GB3747659 A GB 3747659A GB 3747659 A GB3747659 A GB 3747659A GB 914411 A GB914411 A GB 914411A
Authority
GB
United Kingdom
Prior art keywords
butene
propylene
ethylene
film
copolymers
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
GB3747659A
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 GB914411A publication Critical patent/GB914411A/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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; 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
    • 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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • 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

Abstract

A film of an olefin polymer or copolymer possessing in the molecule an average of more than 10 chain branches per 1,000 carbon atoms is biaxially extended to at least fifteen times the initial area at a temperature below the crystallite melting point of the polymer or copolymer, to produce a shrinkable film. Preferably, the crystallite melting points of the polymers used are lower than 130 DEG C. Specified polymers include high pressure polyethylene, polybutene-1, and the following copolymers where the first-named material is present in the major proportion:- ethylene-propylene, ethylene-butene-1, and butene-1/propylene. Especially preferred are copolymers of 85-95% ethylene with 5-15% propylene, of 90-98% ethylene with 2-10% butene-1, of 60-80% butene-1 with 20-40% propylene, and 95-98% butene-1 with 2-5% pentene-1, which yield films which, in a water bath at 100 DEG C., shrink from 25-40%. A flat film may be stretched transversely by clamps and longitudinally by rollers, or tubular film may be stretched mechanically in both directions, or by inflation. Films may be made consisting of two or more layers of different polymers (see Group VIII).
GB3747659A 1958-11-05 1959-11-04 Manufacture of shrinkable films of polyolefins or copolymers thereof Expired GB914411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK36138A DE1221435B (en) 1958-11-05 1958-11-05 Process for making films made of polyolefins shrinkable

Publications (1)

Publication Number Publication Date
GB914411A true GB914411A (en) 1963-01-02

Family

ID=7220588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3747659A Expired GB914411A (en) 1958-11-05 1959-11-04 Manufacture of shrinkable films of polyolefins or copolymers thereof

Country Status (6)

Country Link
CA (1) CA632346A (en)
CH (1) CH376656A (en)
DE (1) DE1221435B (en)
FR (1) FR1242429A (en)
GB (1) GB914411A (en)
IT (1) IT619656A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009376A2 (en) * 1978-09-15 1980-04-02 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
US4335069A (en) 1981-06-25 1982-06-15 E. I. Du Pont De Nemours And Company Flat sheet process for production of polyolefin shrink film
US4399180A (en) * 1978-09-15 1983-08-16 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
EP0145014A2 (en) * 1983-12-14 1985-06-19 Sumitomo Chemical Company, Limited A packaging shrink film
EP0319401A2 (en) * 1987-11-30 1989-06-07 Bollore Technologies Method of producing a shrinkable film
US4923750A (en) * 1987-12-30 1990-05-08 Co-Ex Plastics, Inc. Thermoplastic stretch-wrap material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814135A (en) * 1987-12-22 1989-03-21 Union Carbide Corporation Process for extrusion
DK399489D0 (en) * 1989-04-10 1989-08-14 Kohjin Co IRRICULATED AND HEATABLE POLYAETHYLENE FILM

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR988665A (en) * 1949-04-02 1951-08-30 Process for coating or coating various objects with a layer of thermoplastic material and in particular of polyvinyl chloride
CH290384A (en) * 1950-06-03 1953-04-30 Cellulose Sidac Societe Anonym Process for the production of a continuous film of organic plastic material by extrusion and apparatus for carrying out the process.
BE522077A (en) * 1952-08-12
DE962719C (en) * 1953-10-08 1957-04-25 Huels Chemische Werke Ag Stretched shapes seamlessly sheathed with thermoplastics
BE540943A (en) * 1954-11-19
AT200332B (en) * 1955-02-04 1958-10-25 Union Carbide & Carbon Corp Method of making thin, self-supporting, flexible films and then made polyethylene film
BE553096A (en) * 1955-12-01

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009376A2 (en) * 1978-09-15 1980-04-02 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
EP0009376A3 (en) * 1978-09-15 1980-04-16 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
US4399180A (en) * 1978-09-15 1983-08-16 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
US4335069A (en) 1981-06-25 1982-06-15 E. I. Du Pont De Nemours And Company Flat sheet process for production of polyolefin shrink film
EP0145014A2 (en) * 1983-12-14 1985-06-19 Sumitomo Chemical Company, Limited A packaging shrink film
EP0145014A3 (en) * 1983-12-14 1986-12-30 Sumitomo Chemical Company, Limited A packaging shrink film
EP0319401A2 (en) * 1987-11-30 1989-06-07 Bollore Technologies Method of producing a shrinkable film
EP0319401A3 (en) * 1987-11-30 1991-09-25 Bollore Technologies Method of producing a shrinkable film
US4923750A (en) * 1987-12-30 1990-05-08 Co-Ex Plastics, Inc. Thermoplastic stretch-wrap material

Also Published As

Publication number Publication date
DE1221435B (en) 1966-07-21
CH376656A (en) 1964-04-15
IT619656A (en)
CA632346A (en) 1961-12-05
FR1242429A (en) 1960-09-30

Similar Documents

Publication Publication Date Title
US3365520A (en) Novel ethylene polymer compositions containing 1-olefin/carboxylic acid salt interpolymers
CA1300077C (en) Monolayer polyethylene shrink film
US4336350A (en) Cold drawn film made of an olefin polymer blend composition
KR910000870A (en) Biaxially oriented film
GB1113380A (en) Thermoplastic polymer blend compositions
JPS6414018A (en) Stretch packaging film
GB2097324A (en) Shrink films of ethylene/ alpha - olefin copolymers
GB914411A (en) Manufacture of shrinkable films of polyolefins or copolymers thereof
GB980979A (en) Improvements relating to the production of films
GB1231861A (en)
UST958013I4 (en) Polymeric film
JPS5571738A (en) Thermoplastic elastomer
GB1312808A (en) Heat-shrinkable ethylene polymer films
GB963826A (en) Improvements in or relating to polypropylene film manufacture
GB1413380A (en) High density polyethylene film
JPH0826193B2 (en) Butene-1 Propylene Copolymer Composition Rich in Butene
AU627640B2 (en) Improved heat shrinkable polyolefin film
JP3141956B2 (en) Polyethylene heat shrinkable film with excellent transparency
GB1373965A (en) Biaxially stretched films of polypropylene or copolymers or mixtures of polypropylene and polyethylene
US4481334A (en) Composition for drawn film, cold drawn film made of said composition and process for manufacture of said film
GB866822A (en) Improvements in the treatment of polymers and copolymers of propylene
GB978633A (en) Polyolefin blends
JPS57176127A (en) Preparation of stretched tape
JPH07132579A (en) Ethylene thermal contraction film with small quantity of eluate due to n-hexane extraction
JPS6414019A (en) Heat-shrinkable polypropylene film