NL7114267A - Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr - Google Patents

Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr

Info

Publication number
NL7114267A
NL7114267A NL7114267A NL7114267A NL7114267A NL 7114267 A NL7114267 A NL 7114267A NL 7114267 A NL7114267 A NL 7114267A NL 7114267 A NL7114267 A NL 7114267A NL 7114267 A NL7114267 A NL 7114267A
Authority
NL
Netherlands
Prior art keywords
metal plates
fastened together
spiral springs
pvc film
biaxially drawn
Prior art date
Application number
NL7114267A
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 filed Critical
Priority to NL7114267A priority Critical patent/NL7114267A/en
Publication of NL7114267A publication Critical patent/NL7114267A/en

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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
    • B29C55/165—Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

Appts. for prodn. of biaxially drawn plastic film, esp PVC film, has supply rollers and drawn rollers driven at different velocities, and two endless belts (b) which diverge relative to the lengthwise edges of the films and cooperate with these edges for transversely drawing the film. The belts are composed of metal plates fastened together by spiral springs which allow a free displacement of the metal plates without certain limits in the lengthwise direction of the belt, while pins extending perpendicular to the longitudinal direction of the belt are fastened to the plates.
NL7114267A 1971-10-18 1971-10-18 Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr NL7114267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7114267A NL7114267A (en) 1971-10-18 1971-10-18 Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7114267A NL7114267A (en) 1971-10-18 1971-10-18 Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr

Publications (1)

Publication Number Publication Date
NL7114267A true NL7114267A (en) 1972-01-25

Family

ID=19814286

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7114267A NL7114267A (en) 1971-10-18 1971-10-18 Biaxially drawn pvc film - using transverse drawing belts consisting of metal plates fastened together by spiral springs and pr

Country Status (1)

Country Link
NL (1) NL7114267A (en)

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