GB1242346A - Producing filamentary materials by fibrillation - Google Patents

Producing filamentary materials by fibrillation

Info

Publication number
GB1242346A
GB1242346A GB1081869A GB1081869A GB1242346A GB 1242346 A GB1242346 A GB 1242346A GB 1081869 A GB1081869 A GB 1081869A GB 1081869 A GB1081869 A GB 1081869A GB 1242346 A GB1242346 A GB 1242346A
Authority
GB
United Kingdom
Prior art keywords
die
film
ribbons
extruded
fibrillation
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
GB1081869A
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.)
Celanese Corp
Original Assignee
Celanese Corp
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 Celanese Corp filed Critical Celanese Corp
Publication of GB1242346A publication Critical patent/GB1242346A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • 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
    • D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments

Abstract

1,242,346. Producing filamentary materials by fibrillation. CELANESE CORP. 28 Feb., 1969 [1 March, 1968], No. 10818/69. Addition to 1,165,934. Heading B5B. The process of the parent Specification (wherein a blend of a molten filament-forming synthetic thermoplastic polymer and a minor proportion of a blowing agent which at the extrusion temperature is itself or evolves, a gas is extruded in film form, the film is drawn as it leaves the extrusion die and the drawing is continued while the film is maintained at a temperature above the glass transition temperature of the polymer until fibrillation occurs and the fibrillated film is solidified) is modified in that the blend is subdivided as it is extruded, so that it issues from the extruder as a plurality of ribbons, each of which has a width to thickness ratio of from 200 : 1 to 20,000 : 1, and the ribbons are simultaneously drawn to fibrillation, and solidified. The subdivision of the melt as it is extruded can be effected by using an extrusion die provided with dividers which can be fixed, e.g. formed integrally with the die lips, or adjustably mounted within or against the die lips. The die itself can be a slot die such as would normally extrude a flat film or a die provided with an annular outlet such as would normally produce a tubular film. In an example, a mixture of a polypropylene having a melt index of 6À5 and an inherent viscosity of 2À2 in decalin at 135‹ C. and 1% of azodicarbonamide is melt extruded through a die-head maintained at 240‹ C. and having a slot type extrusion orifice 6 inches long and 0À020 inch wide, the slot being provided with polymer stream dividers 1¢ inches apart. The extruded ribbons are cooled at a controlled rate to below their softening temperature by means of jets of air at 20‹ C. and 90 p.s.i.g. pressure directed into the upper and lower surfaces of the ribbons by means of quench tubes. The solidified ribbons are passed over a driven first roll whereby a fibrillated product is obtained which is then drawn by passage over a shoe maintained at 125‹ C. followed by a second roll driven at three times the peripheral speed of the first roll.
GB1081869A 1968-03-01 1969-02-28 Producing filamentary materials by fibrillation Expired GB1242346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70961868A 1968-03-01 1968-03-01

Publications (1)

Publication Number Publication Date
GB1242346A true GB1242346A (en) 1971-08-11

Family

ID=24850618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1081869A Expired GB1242346A (en) 1968-03-01 1969-02-28 Producing filamentary materials by fibrillation

Country Status (7)

Country Link
BE (1) BE729275A (en)
CA (1) CA944114A (en)
CH (1) CH546831A (en)
DE (1) DE1910428A1 (en)
FR (1) FR2003081A6 (en)
GB (1) GB1242346A (en)
NL (1) NL6903249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814131A (en) * 1987-07-02 1989-03-21 Atlas Sheldon M Process for producing a shaped article, such as fiber composed of a hydrophobic polymer and a hydrophilic polymer
US20130098531A1 (en) * 2011-10-20 2013-04-25 Tarkett, Inc. Process for making artificial turf fibers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814131A (en) * 1987-07-02 1989-03-21 Atlas Sheldon M Process for producing a shaped article, such as fiber composed of a hydrophobic polymer and a hydrophilic polymer
US20130098531A1 (en) * 2011-10-20 2013-04-25 Tarkett, Inc. Process for making artificial turf fibers
CN103906866A (en) * 2011-10-20 2014-07-02 塔克特公司 Process for making artificial turf fibers
US8999213B2 (en) * 2011-10-20 2015-04-07 Tarkett, Inc. Process for making artificial turf fibers

Also Published As

Publication number Publication date
NL6903249A (en) 1969-09-03
CA944114A (en) 1974-03-26
FR2003081A6 (en) 1969-11-07
DE1910428A1 (en) 1970-10-15
CH546831A (en) 1974-03-15
BE729275A (en) 1969-09-03

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