ES445851A1 - Polymeric film - Google Patents

Polymeric film

Info

Publication number
ES445851A1
ES445851A1 ES445851A ES445851A ES445851A1 ES 445851 A1 ES445851 A1 ES 445851A1 ES 445851 A ES445851 A ES 445851A ES 445851 A ES445851 A ES 445851A ES 445851 A1 ES445851 A1 ES 445851A1
Authority
ES
Spain
Prior art keywords
mono
stretch
alpha
ethylene copolymer
olefin comonomer
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
ES445851A
Other languages
Spanish (es)
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
Publication of ES445851A1 publication Critical patent/ES445851A1/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
    • 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)
  • Extrusion Moulding Of Plastics Or The Like (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)

Abstract

Process for the production of ethylene copolymer films with at least one mono-alpha-olefin comonomer, endowed with an impact resistance and a stiffness modulus such that an impact-stiffness function defined by the relation: **(See formula)** it has a value of at least 750; characterized in that it comprises extruding an ethylene copolymer with at least one mono-alpha-olefin comonomer, through an annular nozzle maintained at a temperature of 170 to 300ºC; blow the extrudate to give a circumferential expansion of 1.2 to 10 times; and stretch to stretch 2.5 to 50 times. (Machine-translation by Google Translate, not legally binding)
ES445851A 1975-03-07 1976-03-08 Polymeric film Expired ES445851A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES445851A1 true ES445851A1 (en) 1977-05-16

Family

ID=9874389

Family Applications (1)

Application Number Title Priority Date Filing Date
ES445851A Expired ES445851A1 (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)

Families Citing this family (9)

* 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
US4359561A (en) 1979-06-18 1982-11-16 Union Carbide Corporation High tear strength polymers
US4363904A (en) 1979-06-18 1982-12-14 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
US4379197A (en) 1981-12-02 1983-04-05 El Paso Polyolefins Company Stretch wrap film composition
US5013551A (en) * 1990-02-01 1991-05-07 E. I. Du Pont De Nemours And Company Animal repellant LLDPE

Also Published As

Publication number Publication date
JPS51112883A (en) 1976-10-05
FR2302836B1 (en) 1981-12-24
DE2609528A1 (en) 1976-09-16
CA1077199A (en) 1980-05-06
NL7602400A (en) 1976-09-09
GB1532780A (en) 1978-11-22
ZA761400B (en) 1977-02-23
AU1177076A (en) 1977-09-15
IT1056944B (en) 1982-02-20
AU496842B2 (en) 1978-11-02
IN144894B (en) 1978-07-22
BE839326A (en) 1976-09-08
FR2302836A1 (en) 1976-10-01
AR225265A1 (en) 1982-03-15
UST958013I4 (en) 1977-05-03

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19840211