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GB1532780A - Polyolefine film - Google Patents

Polyolefine film

Info

Publication number
GB1532780A
GB1532780A GB9562/75A GB956275A GB1532780A GB 1532780 A GB1532780 A GB 1532780A GB 9562/75 A GB9562/75 A GB 9562/75A GB 956275 A GB956275 A GB 956275A GB 1532780 A GB1532780 A GB 1532780A
Authority
GB
United Kingdom
Prior art keywords
film
rate
measured
march
mono
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
GB9562/75A
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
Priority to GB9562/75A priority Critical patent/GB1532780A/en
Priority to IN411/CAL/1976A priority patent/IN144894B/en
Priority to ES445851A priority patent/ES445851A1/en
Priority to US05/664,985 priority patent/UST958013I4/en
Priority to IT20963/76A priority patent/IT1056944B/en
Priority to AU11770/76A priority patent/AU496842B2/en
Priority to DE19762609528 priority patent/DE2609528A1/en
Priority to AR262484A priority patent/AR225265A1/en
Priority to BE164963A priority patent/BE839326A/en
Priority to JP51024266A priority patent/JPS51112883A/en
Priority to ZA761400A priority patent/ZA761400B/en
Priority to NL7602400A priority patent/NL7602400A/en
Priority to FR7606492A priority patent/FR2302836A1/en
Priority to CA247,349A priority patent/CA1077199A/en
Publication of GB1532780A publication Critical patent/GB1532780A/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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1532780 Polyolefine films IMPERIAL CHEMICAL INDUSTRIES Ltd 8 March 1976 [7 March 1975] 9562/75 Heading B5B A film is formed from a copolymer of ethylene with at least one mono-α-olefine comonomer which film has an impact strength and a stiffness modulus which are such that the impact-stiffness function defined by the relationship is at least 750. In a preferred film the stiffness modulus is 200-400 MNm<SP>-2</SP> the tear strength is at least 5 g/micron of film thickness in both machine and transverse directions, the tensile strength at break measured at a straining rate of 500 mm/minute is at least 20 MN/m<SP>2</SP>, the elongation of break measured at a straining rate of 500 mm/min. is 300-1100%, the density is 915-935 kg/m<SP>3</SP>, an annealed density of 918- 940 kg/m<SP>3</SP> the melt flow index measured at 190‹ C. using a weight of 2À16 kg is 0À05-0À7, an apparent viscosity measured at 200‹ C. and a shear rate of 100 sec<SP>-1</SP> of 0À5 x 10<SP>3</SP>-3 x 10<SP>3</SP> NSm<SP>-2</SP> and a viscosity at 200‹ C. and a stress of 10<SP>3</SP>N/m<SP>2</SP> which is at least 2 Ac (1À6 A Î 10<SP>-3</SP>) and not more than 1000 A where A is the apparent viscosity and a sheer rate of 100 sec<SP>-1</SP> and the relationship has a value of at least 18,000. The copolymer is preferably one of ethylene and a comonomer of which at least 50% molar of the mono-α-olefine has 5 or more carbon atoms. The film is formed by extrusion through an annular die followed by inflation.
GB9562/75A 1975-03-07 1975-03-07 Polyolefine film Expired GB1532780A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
GB9562/75A GB1532780A (en) 1975-03-07 1975-03-07 Polyolefine film
IN411/CAL/1976A IN144894B (en) 1975-03-07 1976-03-08
ES445851A ES445851A1 (en) 1975-03-07 1976-03-08 Polymeric film
US05/664,985 UST958013I4 (en) 1975-03-07 1976-03-08 Polymeric film
IT20963/76A IT1056944B (en) 1975-03-07 1976-03-08 POLYMER FILMS
AU11770/76A AU496842B2 (en) 1975-03-07 1976-03-08 Polymeric film
DE19762609528 DE2609528A1 (en) 1975-03-07 1976-03-08 POLYMER FILMS
AR262484A AR225265A1 (en) 1975-03-07 1976-03-08 POLYMER FILM AND PROCEDURE TO OBTAIN IT
BE164963A BE839326A (en) 1975-03-07 1976-03-08 POLYMER FILM
JP51024266A JPS51112883A (en) 1975-03-07 1976-03-08 Polymerized film and its manufacturing process
ZA761400A ZA761400B (en) 1975-03-07 1976-03-08 Polymeric film
NL7602400A NL7602400A (en) 1975-03-07 1976-03-08 ETHENE COPOLYMER FILM.
FR7606492A FR2302836A1 (en) 1975-03-07 1976-03-08 OLEFINIC POLYMER FILM
CA247,349A CA1077199A (en) 1975-03-07 1976-03-08 Polymeric film

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
GB1532780A true GB1532780A (en) 1978-11-22

Family

ID=9874389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9562/75A Expired GB1532780A (en) 1975-03-07 1975-03-07 Polyolefine 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243619A (en) 1978-03-31 1981-01-06 Union Carbide Corporation 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

Families Citing this family (6)

* 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
ZA791365B (en) * 1978-03-31 1980-11-26 Union Carbide Corp Process for making film from low density ethylene hydrocarbon copolymer
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243619A (en) 1978-03-31 1981-01-06 Union Carbide Corporation 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

Also Published As

Publication number Publication date
IN144894B (en) 1978-07-22
UST958013I4 (en) 1977-05-03
DE2609528A1 (en) 1976-09-16
FR2302836A1 (en) 1976-10-01
NL7602400A (en) 1976-09-09
AR225265A1 (en) 1982-03-15
ES445851A1 (en) 1977-05-16
JPS51112883A (en) 1976-10-05
IT1056944B (en) 1982-02-20
AU1177076A (en) 1977-09-15
CA1077199A (en) 1980-05-06
FR2302836B1 (en) 1981-12-24
ZA761400B (en) 1977-02-23
BE839326A (en) 1976-09-08
AU496842B2 (en) 1978-11-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee