GB1172038A - Process for the Production of Oriented Polyolefin Tapes - Google Patents

Process for the Production of Oriented Polyolefin Tapes

Info

Publication number
GB1172038A
GB1172038A GB5110467A GB5110467A GB1172038A GB 1172038 A GB1172038 A GB 1172038A GB 5110467 A GB5110467 A GB 5110467A GB 5110467 A GB5110467 A GB 5110467A GB 1172038 A GB1172038 A GB 1172038A
Authority
GB
United Kingdom
Prior art keywords
film
orientation
crystallite
tapes
melting point
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
GB5110467A
Inventor
Liberato Mascia
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB5110467A priority Critical patent/GB1172038A/en
Priority to NL6815892A priority patent/NL6815892A/xx
Priority to DE19681807954 priority patent/DE1807954A1/en
Priority to FR1591024D priority patent/FR1591024A/fr
Publication of GB1172038A publication Critical patent/GB1172038A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
    • 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
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/146—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly transversely to the direction of feed and then parallel thereto
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material

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)
  • Artificial Filaments (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1,172,038. Producing polyolefin tapes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Oct., 1968 [9 Nov., 1967], No. 51104/67. Heading B5B. Polyolefin tapes are produced by melt extruding a crystallizable poly-α-olefin or a composition comprising at least one crystallizable poly-α-olefin in the form of a film which, while still at a temperature above its crystalline melting point is drawn in the direction transverse to the direction of extrusion at a draw ratio from 1À2 to 4À0 and subsequently drawn, while at a temperature below its crystalline melting point, in the direction of extrusion, the said film being slit in the direction of extrusion into a plurality of tapes either before or after said subsequent drawing. The polymeric material may be melt extruded to form a tubular film and "melt orientation" may be carried out in the freshly extruded film while the film is in a tubular shape and may be introduced in the longitudinal direction as well as in the transverse direction. The freshly extruded tube of film may be cooled by means of cooling air which first contacts the "shoulders" of the expanding bubble. The film may be slit to form a plurality of tapes and then subjected to longitudinal "crystallite orientation". The "crystallite orientation" may be carried out at a temperature not less than 30‹ C. below the crystallite melting point. The crystallizable poly-alpha-olefin may be polypropylene, "high-density" polyethylene, poly - 4 - methyl pentene - 1 or poly - 3 - methyl-butene. The crystallite orientation may be carried out at 100‹ to 130‹ C. The draw ratio which is used during the "crystallite orientation" may be at least 7:1 and not greater than 13:1. "Melt orientation" is defined as orientation which occurs due to stretching above the crystallite melting point and "crystallite orientation" is defined as orientation occurring due to stretching below the c.m.p. Tapes produced according to the process of the invention may be used in the production of coarse woven fabrics and sacks. The extruded film may be flat or in the form of a tube, preferably the latter, the drawing in the direction transverse to that of extrusion being in that case effected by inflation. The tapes produced according to the process of the invention are resistant to fibrillation. The crystallite melting point is the temperature at which a sample of the film observed under polarized light while being heated ceases to exhibit birefringence.
GB5110467A 1967-11-09 1967-11-09 Process for the Production of Oriented Polyolefin Tapes Expired GB1172038A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB5110467A GB1172038A (en) 1967-11-09 1967-11-09 Process for the Production of Oriented Polyolefin Tapes
NL6815892A NL6815892A (en) 1967-11-09 1968-11-07
DE19681807954 DE1807954A1 (en) 1967-11-09 1968-11-08 Prodn of polyalkane bonds from extruded sheet
FR1591024D FR1591024A (en) 1967-11-09 1968-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5110467A GB1172038A (en) 1967-11-09 1967-11-09 Process for the Production of Oriented Polyolefin Tapes

Publications (1)

Publication Number Publication Date
GB1172038A true GB1172038A (en) 1969-11-26

Family

ID=10458674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5110467A Expired GB1172038A (en) 1967-11-09 1967-11-09 Process for the Production of Oriented Polyolefin Tapes

Country Status (4)

Country Link
DE (1) DE1807954A1 (en)
FR (1) FR1591024A (en)
GB (1) GB1172038A (en)
NL (1) NL6815892A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981952A (en) * 1971-07-27 1976-09-21 Lambeg Industrial Research Association Fibrous materials
WO1982002169A1 (en) * 1980-12-22 1982-07-08 Kletecka George Hindered phenolic antioxidants and diazacycloalkane uv stabilizers in polymeric films
US5085566A (en) * 1988-12-19 1992-02-04 Windmoller & Holscher Apparatus for manufacturing oriented multi-ply tapes
WO2007131684A1 (en) * 2006-05-11 2007-11-22 Trioplast Ab Apparatus and method for producing plastic film

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3431706B2 (en) * 1994-12-16 2003-07-28 新日本石油化学株式会社 Laminate, nonwoven fabric or woven fabric and reinforced laminate using them
US6054086A (en) * 1995-03-24 2000-04-25 Nippon Petrochemicals Co., Ltd. Process of making high-strength yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981952A (en) * 1971-07-27 1976-09-21 Lambeg Industrial Research Association Fibrous materials
WO1982002169A1 (en) * 1980-12-22 1982-07-08 Kletecka George Hindered phenolic antioxidants and diazacycloalkane uv stabilizers in polymeric films
US5085566A (en) * 1988-12-19 1992-02-04 Windmoller & Holscher Apparatus for manufacturing oriented multi-ply tapes
WO2007131684A1 (en) * 2006-05-11 2007-11-22 Trioplast Ab Apparatus and method for producing plastic film

Also Published As

Publication number Publication date
DE1807954A1 (en) 1969-06-04
FR1591024A (en) 1970-04-20
NL6815892A (en) 1969-05-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees