GB1105029A - Improvements in or relating to methods and apparatus for drawing synthetic polymer tapes and products thus obtained - Google Patents

Improvements in or relating to methods and apparatus for drawing synthetic polymer tapes and products thus obtained

Info

Publication number
GB1105029A
GB1105029A GB30659/65A GB3065965A GB1105029A GB 1105029 A GB1105029 A GB 1105029A GB 30659/65 A GB30659/65 A GB 30659/65A GB 3065965 A GB3065965 A GB 3065965A GB 1105029 A GB1105029 A GB 1105029A
Authority
GB
United Kingdom
Prior art keywords
rollers
tapes
feed
series
intermediate rollers
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
GB30659/65A
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.)
SAINT FRERES
Original Assignee
SAINT FRERES
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 SAINT FRERES filed Critical SAINT FRERES
Publication of GB1105029A publication Critical patent/GB1105029A/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
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins

Landscapes

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

Abstract

1,105,029. Films and tapes. SAINT FRERES. 19 July, 1965 [14 June, 1965], No. 30659/65. Heading B5B. Synthetic polymer tapes are drawn between a series of feed rollers 2, 3 and a series of withdrawal rollers 11, 12 driven at a peripheral velocity higher than that of the said feed rollers, the ratio of the peripheral velocities of said feed and withdrawal rollers providing the overall drawing rate, characterized in that, between said series of feed rollers and said series of withdrawal rollers, said tapes are caused to pass over a series of intermediate heating rollers 6, 7, 8, 9, 10, brought to a temperature below the softening point of the synthetic polymer to be drawn, up to not less than 10‹ C. below this softening point in the case of polyolefines, said intermediate rollers being driven at a peripheral velocity increasing gradually from one roller to the next roller in the tape feed direction, and lying between that of said feed rollers and that of said withdrawal rollers, the ratio of the peripheral velocities of any pair of adjacent intermediate rollers being less than 2: 1. The gradual drawing of the tapes may be controlled by changing the number of said intermediate rollers and adjusting the speed ratio on the successive rollers. The greater the number of intermediate rollers and the lower the partial drawing rates, the more gradual the drawing effect. Thus in the case of polyolefines, at least five intermediate rollers may be used. Other synthetic polymers which may be used include polyamides, polyesters and polyvinyl resins. Preferably, the intermediate rollers are disposed in staggered relationship and the tapes caused to follow a zigzag path while contacting said intermediate rollers. Suitably an extruded film is cut into tapes or strips as it is delivered from the series of feed rollers 2, 3 by cutting device 4. The intermediate rollers may be heated to temperatures increasing gradually from one roller to the next, so as gradually to heat the tape. Suitably the intermediate rollers are heated electrically or by circulation of a hot fluid in contra-current to the direction of tape feed. Tapes having a thickness of less than 0.040 mm. and having a width to thickness ratio greater than 50 and especially above 150 may be made by the method of the invention.
GB30659/65A 1965-06-14 1965-07-19 Improvements in or relating to methods and apparatus for drawing synthetic polymer tapes and products thus obtained Expired GB1105029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR20641A FR1450585A (en) 1965-06-14 1965-06-14 Method and apparatus for drawing synthetic polymer tapes and products obtained

Publications (1)

Publication Number Publication Date
GB1105029A true GB1105029A (en) 1968-03-06

Family

ID=8581850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30659/65A Expired GB1105029A (en) 1965-06-14 1965-07-19 Improvements in or relating to methods and apparatus for drawing synthetic polymer tapes and products thus obtained

Country Status (6)

Country Link
BE (1) BE682494A (en)
ES (1) ES328230A1 (en)
FR (1) FR1450585A (en)
GB (1) GB1105029A (en)
LU (1) LU51322A1 (en)
NL (1) NL6608248A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328639A1 (en) * 1973-06-06 1975-01-02 Barmag Barmer Maschf METHOD AND APPARATUS FOR THE PRODUCTION OF LOW-SHRINK FILM TAPES
EP0049206A1 (en) * 1980-09-26 1982-04-07 Crown Zellerbach Corporation Method of improving the flatness of compression rolled plastic film
US7540731B2 (en) * 2003-03-31 2009-06-02 Darlet Marchante Technologies S.A. Longitudinal film drawing device
CN104328520A (en) * 2014-09-23 2015-02-04 苏州瑞邦塑胶有限公司 Flat membrane wire drawing method of plastic

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107012555A (en) * 2017-05-11 2017-08-04 武汉纺织大学 A kind of resultant yarn method of type film silkization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328639A1 (en) * 1973-06-06 1975-01-02 Barmag Barmer Maschf METHOD AND APPARATUS FOR THE PRODUCTION OF LOW-SHRINK FILM TAPES
EP0049206A1 (en) * 1980-09-26 1982-04-07 Crown Zellerbach Corporation Method of improving the flatness of compression rolled plastic film
US7540731B2 (en) * 2003-03-31 2009-06-02 Darlet Marchante Technologies S.A. Longitudinal film drawing device
CN104328520A (en) * 2014-09-23 2015-02-04 苏州瑞邦塑胶有限公司 Flat membrane wire drawing method of plastic

Also Published As

Publication number Publication date
LU51322A1 (en) 1966-08-16
ES328230A1 (en) 1967-04-01
BE682494A (en) 1966-11-14
FR1450585A (en) 1966-06-24
NL6608248A (en) 1966-12-15

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