GB1448319A - Paper-like thermoplastic film - Google Patents

Paper-like thermoplastic film

Info

Publication number
GB1448319A
GB1448319A GB5044874A GB5044874A GB1448319A GB 1448319 A GB1448319 A GB 1448319A GB 5044874 A GB5044874 A GB 5044874A GB 5044874 A GB5044874 A GB 5044874A GB 1448319 A GB1448319 A GB 1448319A
Authority
GB
United Kingdom
Prior art keywords
microns
polyethylene
paper
nov
melt flow
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
GB5044874A
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.)
DuPont Canada Inc
Original Assignee
DuPont Canada Inc
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 DuPont Canada Inc filed Critical DuPont Canada Inc
Publication of GB1448319A publication Critical patent/GB1448319A/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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0081—Tear strength

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1448319 Paper like polyethylene film DU PONT OF CANADA Ltd 21 Nov 1974 [22 Nov 1973] 50448/74 Heading B5B Polyethylene film containing an inorganic filter is formed by extruding through a circular die a mixture of (a) 70-98% by wt. of a polyethylene having a maximum melt flow index of 5 decigrams per minute, (b) 2-30% by wt. of inorganic lamellar filler particles, the largest dimensionofthe particles being less than 150 microns, to form a seamless tubing, expanding and simultaneously cooling the tubing while in the plastic formative state to a blow up ratio in the range 1À2 : 1 to 10 : 1. The polyethylene preferably has a melt flow index from 0À1-1À0 decigrams per minute and a density of 0À945-0À970 gms. per cubic centimetre and the lamellar filler is mica of about 12 microns or talcum of about 6 microns. The film has a thickness 0À3- 10 mils.
GB5044874A 1973-11-22 1974-11-21 Paper-like thermoplastic film Expired GB1448319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA186,508A CA1027324A (en) 1973-11-22 1973-11-22 Paper-like thermoplastic film

Publications (1)

Publication Number Publication Date
GB1448319A true GB1448319A (en) 1976-09-02

Family

ID=4098476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5044874A Expired GB1448319A (en) 1973-11-22 1974-11-21 Paper-like thermoplastic film

Country Status (8)

Country Link
JP (1) JPS5722008B2 (en)
CA (1) CA1027324A (en)
DE (1) DE2455421C2 (en)
DK (1) DK141357B (en)
FR (1) FR2252194B1 (en)
GB (1) GB1448319A (en)
IT (1) IT1025904B (en)
NL (1) NL180515C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027273A1 (en) * 1979-10-12 1981-04-22 Montedison S.p.A. Fibrillated and orientated reinforcement films made of at least one film-forming, orientable synthetic polymer, process for the preparation of such films and hydraulic binder-based products containing these films

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5824250B2 (en) * 1975-10-07 1983-05-20 日産化学工業株式会社 Method for producing transversely split thin film
JPS5824251B2 (en) * 1975-10-07 1983-05-20 日産化学工業株式会社 Method for manufacturing thin film made of mineral-filled plastic
US4243619A (en) * 1978-03-31 1981-01-06 Union Carbide Corporation Process for making film from low density ethylene hydrocarbon copolymer
TW379272B (en) * 1998-03-05 2000-01-11 Longmeng Environmental Papers Method of manufacturing recycling papers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA758151A (en) * 1967-05-02 Union Carbide Corporation Polymeric film-forming compositions and films of said compositions
CA893216A (en) * 1968-12-19 1972-02-15 Du Pont Of Canada Limited Process and apparatus for forming thermoplastic tubing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027273A1 (en) * 1979-10-12 1981-04-22 Montedison S.p.A. Fibrillated and orientated reinforcement films made of at least one film-forming, orientable synthetic polymer, process for the preparation of such films and hydraulic binder-based products containing these films

Also Published As

Publication number Publication date
JPS5085664A (en) 1975-07-10
DK141357C (en) 1980-09-01
FR2252194B1 (en) 1978-04-28
CA1027324A (en) 1978-03-07
IT1025904B (en) 1978-08-30
AU7553474A (en) 1976-05-20
NL180515C (en) 1987-03-02
NL7415170A (en) 1975-05-26
DK141357B (en) 1980-03-03
JPS5722008B2 (en) 1982-05-11
DE2455421A1 (en) 1975-05-28
DK606374A (en) 1975-07-14
FR2252194A1 (en) 1975-06-20
DE2455421C2 (en) 1986-07-24
NL180515B (en) 1986-10-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19941120