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CA939479A - Method of and apparatus for stretching polymeric film - Google Patents

Method of and apparatus for stretching polymeric film

Info

Publication number
CA939479A
CA939479A CA084,600A CA84600A CA939479A CA 939479 A CA939479 A CA 939479A CA 84600 A CA84600 A CA 84600A CA 939479 A CA939479 A CA 939479A
Authority
CA
Canada
Prior art keywords
polymeric film
stretching polymeric
stretching
film
polymeric
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
CA084,600A
Other versions
CA84600S (en
Inventor
Robert G. Peet
Henry O. Foster
Kenneth G. Paulsell
Thomas H. Hogshead (Jr.)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of CA939479A publication Critical patent/CA939479A/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
    • 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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
CA084,600A 1969-07-23 1970-06-03 Method of and apparatus for stretching polymeric film Expired CA939479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84414069A 1969-07-23 1969-07-23

Publications (1)

Publication Number Publication Date
CA939479A true CA939479A (en) 1974-01-08

Family

ID=25291925

Family Applications (1)

Application Number Title Priority Date Filing Date
CA084,600A Expired CA939479A (en) 1969-07-23 1970-06-03 Method of and apparatus for stretching polymeric film

Country Status (6)

Country Link
BE (1) BE753744A (en)
CA (1) CA939479A (en)
DE (1) DE2036624C2 (en)
FR (1) FR2055347A5 (en)
GB (1) GB1319320A (en)
NL (1) NL172130C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546671A1 (en) * 1995-12-15 1997-06-19 Hoechst Trespaphan Gmbh Process for longitudinal stretching in the production of oriented polypropylene films
EP3260268B1 (en) * 2015-02-20 2020-01-01 Toray Industries, Inc. Method for producing microporous plastic film
CN111204036B (en) * 2020-03-16 2025-06-06 福建宏科新材料科技有限公司 A breathable film stretching device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547736A (en) * 1947-08-08 1951-04-03 Polaroid Corp Process for stretching continuous materials such as sheeting and the like
BE573836A (en) * 1957-12-12
GB890005A (en) * 1959-06-23 1962-02-21 Du Pont Improvements in or relating to the stretching of organic polymer film
NL285743A (en) * 1961-11-21
US3243844A (en) * 1964-04-28 1966-04-05 Marshall And Williams Corp Longitudinal web stretching machine
BE669312A (en) * 1964-09-07

Also Published As

Publication number Publication date
BE753744A (en) 1970-12-31
FR2055347A5 (en) 1971-05-07
NL172130C (en) 1983-07-18
NL172130B (en) 1983-02-16
DE2036624C2 (en) 1982-02-04
DE2036624A1 (en) 1971-02-04
NL7010803A (en) 1971-01-26
GB1319320A (en) 1973-06-06

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