DK119960B - Fremgangsmåde til uniaksial orientering af stereoregulære polypropylenfilm i længderetningen til et endeligt strækningsforhold på mindst 6:1. - Google Patents

Fremgangsmåde til uniaksial orientering af stereoregulære polypropylenfilm i længderetningen til et endeligt strækningsforhold på mindst 6:1.

Info

Publication number
DK119960B
DK119960B DK267767A DK267767A DK119960B DK 119960 B DK119960 B DK 119960B DK 267767 A DK267767 A DK 267767A DK 267767 A DK267767 A DK 267767A DK 119960 B DK119960 B DK 119960B
Authority
DK
Denmark
Prior art keywords
longitudinal
stretch ratio
polypropylene films
uniaxial orientation
final stretch
Prior art date
Application number
DK267767A
Other languages
Danish (da)
English (en)
Inventor
L Chill
Original Assignee
Chevron Res
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 Chevron Res filed Critical Chevron Res
Publication of DK119960B publication Critical patent/DK119960B/da

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
    • B29C55/065—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 in several stretching steps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
DK267767A 1966-05-24 1967-05-23 Fremgangsmåde til uniaksial orientering af stereoregulære polypropylenfilm i længderetningen til et endeligt strækningsforhold på mindst 6:1. DK119960B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55252366A 1966-05-24 1966-05-24

Publications (1)

Publication Number Publication Date
DK119960B true DK119960B (da) 1971-03-15

Family

ID=24205704

Family Applications (1)

Application Number Title Priority Date Filing Date
DK267767A DK119960B (da) 1966-05-24 1967-05-23 Fremgangsmåde til uniaksial orientering af stereoregulære polypropylenfilm i længderetningen til et endeligt strækningsforhold på mindst 6:1.

Country Status (6)

Country Link
BE (1) BE698592A (OSRAM)
DE (1) DE1704538C3 (OSRAM)
DK (1) DK119960B (OSRAM)
GB (1) GB1174313A (OSRAM)
NL (1) NL6707203A (OSRAM)
SE (1) SE321339B (OSRAM)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6436135B1 (en) 1974-10-24 2002-08-20 David Goldfarb Prosthetic vascular graft
DE2558923C2 (de) * 1975-01-08 1982-12-16 Imperial Chemical Industries Ltd., London Vorrichtung zur kontinuierlichen Längsstreckung einer polymeren Kunststoffolie
US4302920A (en) * 1979-11-21 1981-12-01 Lantech Inc. Film web drive stretch wrapping apparatus and process
FR2852883B1 (fr) * 2003-03-31 2006-07-28 Darlet Marchante Tech Sa Dispositif d'etirage longitudinal de films
US7544318B2 (en) * 2004-04-05 2009-06-09 Illinois Tool Works Inc. Method and apparatus for producing oriented plastic strap
DK2565013T3 (en) 2011-09-02 2015-03-02 Rkw Se A method for stretching a film web

Also Published As

Publication number Publication date
DE1704538A1 (de) 1972-03-23
BE698592A (OSRAM) 1967-11-03
SE321339B (OSRAM) 1970-03-02
DE1704538B2 (de) 1976-03-04
GB1174313A (en) 1969-12-17
DE1704538C3 (de) 1980-01-17
NL6707203A (OSRAM) 1967-11-27

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Legal Events

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PUP Patent expired