UST958013I4 - Polymeric film - Google Patents

Polymeric film Download PDF

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Publication number
UST958013I4
UST958013I4 US05/664,985 US66498576A UST958013I4 US T958013 I4 UST958013 I4 US T958013I4 US 66498576 A US66498576 A US 66498576A US T958013 I4 UST958013 I4 US T958013I4
Authority
US
United States
Prior art keywords
film
comonomer
exudate
give
carbon atoms
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
US05/664,985
Inventor
Denis George Harold Ballard
Eric Jones
John Christopher Padget
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of UST958013I4 publication Critical patent/UST958013I4/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

a film formed from a copolyme of ethylene and at least one mono-α-olefine has a combination of impact strength and stiffness which is such that the function ##EQU1## IS AT LEAST 750. The function is preferably at least 1000 and may be several thousands. The film may also have a high tear strength and good tensile strength.
The copolymer from which the film is formed is preferably one in which the comonomer contains at least 5 carbon atoms; the comonomer conveniently contains not more than 12 carbon atoms. The comonomer content of the polymer is typically in the range from 6.5 up to 30%, by weight.
The film can be produced by a tubular film technique using a temperature of 170°-300° C, a circumferential expansion of 1.2 to 10.0 times and a draw down of 2.5 to 50 times. The production of the polymeric film can include extruding the ethylene copolymer through an annular dye, maintaining the dye temperature in the range from 170°-300° C, blowing the exudate to give a circumferential expansion of from 1.2 up to 10.0 times and drawing the exudate to give a draw down of from 2.5 up to 50 times.
US05/664,985 1975-03-07 1976-03-08 Polymeric film Pending UST958013I4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9562/75A GB1532780A (en) 1975-03-07 1975-03-07 Polyolefine film
UK9562/75 1975-03-07

Publications (1)

Publication Number Publication Date
UST958013I4 true UST958013I4 (en) 1977-05-03

Family

ID=9874389

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/664,985 Pending UST958013I4 (en) 1975-03-07 1976-03-08 Polymeric film

Country Status (14)

Country Link
US (1) UST958013I4 (en)
JP (1) JPS51112883A (en)
AR (1) AR225265A1 (en)
AU (1) AU496842B2 (en)
BE (1) BE839326A (en)
CA (1) CA1077199A (en)
DE (1) DE2609528A1 (en)
ES (1) ES445851A1 (en)
FR (1) FR2302836A1 (en)
GB (1) GB1532780A (en)
IN (1) IN144894B (en)
IT (1) IT1056944B (en)
NL (1) NL7602400A (en)
ZA (1) ZA761400B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379197A (en) 1981-12-02 1983-04-05 El Paso Polyolefins Company Stretch wrap film composition

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1157617A (en) * 1977-12-14 1983-11-29 Milton L. Weiner Oriented polypropylene with linear low density polyethylene copolymer coating
US4243619A (en) * 1978-03-31 1981-01-06 Union Carbide Corporation Process for making film from low density ethylene hydrocarbon copolymer
ZA791365B (en) * 1978-03-31 1980-11-26 Union Carbide Corp Process for making film from low density ethylene hydrocarbon copolymer
US4363904A (en) 1979-06-18 1982-12-14 Union Carbide Corporation High tear strength polymers
US4359561A (en) 1979-06-18 1982-11-16 Union Carbide Corporation High tear strength polymers
JPS56144926A (en) * 1980-04-15 1981-11-11 Mitsubishi Petrochem Co Ltd Monoaxially stretched product of ethylenic resin
JPS5728758A (en) * 1980-07-22 1982-02-16 Nippon Petrochemicals Co Ltd Heavy packing bag
US5013551A (en) * 1990-02-01 1991-05-07 E. I. Du Pont De Nemours And Company Animal repellant LLDPE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379197A (en) 1981-12-02 1983-04-05 El Paso Polyolefins Company Stretch wrap film composition

Also Published As

Publication number Publication date
DE2609528A1 (en) 1976-09-16
JPS51112883A (en) 1976-10-05
FR2302836B1 (en) 1981-12-24
ZA761400B (en) 1977-02-23
NL7602400A (en) 1976-09-09
AR225265A1 (en) 1982-03-15
GB1532780A (en) 1978-11-22
CA1077199A (en) 1980-05-06
IN144894B (en) 1978-07-22
FR2302836A1 (en) 1976-10-01
AU496842B2 (en) 1978-11-02
ES445851A1 (en) 1977-05-16
BE839326A (en) 1976-09-08
IT1056944B (en) 1982-02-20
AU1177076A (en) 1977-09-15

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