FR2054358A5 - Fluid fibrillation of extruded thermoplast - tics melt - Google Patents

Fluid fibrillation of extruded thermoplast - tics melt

Info

Publication number
FR2054358A5
FR2054358A5 FR7025372A FR7025372A FR2054358A5 FR 2054358 A5 FR2054358 A5 FR 2054358A5 FR 7025372 A FR7025372 A FR 7025372A FR 7025372 A FR7025372 A FR 7025372A FR 2054358 A5 FR2054358 A5 FR 2054358A5
Authority
FR
France
Prior art keywords
pref
strand
sec
degrees
gamma
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
FR7025372A
Other languages
French (fr)
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Application granted granted Critical
Publication of FR2054358A5 publication Critical patent/FR2054358A5/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
    • D01D5/423—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
    • 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
    • D01D5/26—Formation of staple fibres

Abstract

Staple fibre is produced by drawing stand(s) of polymer from jet orifices and immediately fibrillating them by a gas stream. The molten polymer is pre-oriented by at least 25% pref. at least 50% before drawing from the orifices. The strand is brought to a temp. at which the polymer viscosity is 102-106 pref. 103-105 cP. Its cross section has a hydraulic radius r of 0.05-1, pref. 0.1-0.5 mm. The strand surface under these conditions is subjected to a tension gamma in the flow direction of 104-109 pref. 105-108 kp/m2, corresponding to a shear speed and of 102-107, pref. 104-106 sec.-1. The strand is subjected to these conditions for a time t of 10-3-1, pref. 10-2-10-1 sec. corresponding to an orientation length of 1-100, pref. 2-30 min. The relations gamma.t.r/l = 1-103, pref. 10-100 kp. sec./m2, and gamma.l.r.2=10-10-4, pref. 1-10-3 m.kp, hold. The strand is fibrillated by a gas, vapour or fluid stream pref. outside the nozzle and is partly cooled by auxiliary gas. Fibrillation is at 5-100 mm from the jet end. The main gas stream acts on the strand at an angle of 5-85 degrees pref. 10-45 degrees, a speed 50-700, pref. 100-400 m/sec., and a temp. of 0-700 degrees C, pref. 20-200 degrees C.
FR7025372A 1969-07-08 1970-07-08 Fluid fibrillation of extruded thermoplast - tics melt Expired FR2054358A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691934541 DE1934541A1 (en) 1969-07-08 1969-07-08 Method and device for the production of staple fibers from thermoplastics

Publications (1)

Publication Number Publication Date
FR2054358A5 true FR2054358A5 (en) 1971-04-16

Family

ID=5739183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7025372A Expired FR2054358A5 (en) 1969-07-08 1970-07-08 Fluid fibrillation of extruded thermoplast - tics melt

Country Status (3)

Country Link
BE (1) BE753167A (en)
DE (1) DE1934541A1 (en)
FR (1) FR2054358A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022207A2 (en) * 1998-10-01 2000-04-20 The University Of Akron Process and apparatus for the production of nanofibers
US6520425B1 (en) 2001-08-21 2003-02-18 The University Of Akron Process and apparatus for the production of nanofibers
US6695992B2 (en) 2002-01-22 2004-02-24 The University Of Akron Process and apparatus for the production of nanofibers

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE787032A (en) * 1971-08-06 1973-02-01 Solvay
BE795841A (en) * 1972-02-25 1973-08-23 Montedison Spa PROCESS FOR PREPARING FIBERS FROM POLYMERIC MATERIALS, SUITABLE FOR THE PREPARATION OF PAPER PULP
US4298565A (en) * 1980-02-12 1981-11-03 E. I. Du Pont De Nemours And Company Spinning process
DE3308626C2 (en) * 1983-03-11 1986-02-20 Dynamit Nobel Ag, 5210 Troisdorf Process for the production of fibrids from thermoplastics
DE4441801C1 (en) * 1994-11-24 1996-06-05 Messer Griesheim Gmbh Polyesterfibride
DE19524356C1 (en) * 1995-07-04 1997-01-02 Messer Griesheim Gmbh Polyurethane fibrids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022207A2 (en) * 1998-10-01 2000-04-20 The University Of Akron Process and apparatus for the production of nanofibers
WO2000022207A3 (en) * 1998-10-01 2000-08-24 Univ Akron Process and apparatus for the production of nanofibers
US6382526B1 (en) 1998-10-01 2002-05-07 The University Of Akron Process and apparatus for the production of nanofibers
US6520425B1 (en) 2001-08-21 2003-02-18 The University Of Akron Process and apparatus for the production of nanofibers
US6695992B2 (en) 2002-01-22 2004-02-24 The University Of Akron Process and apparatus for the production of nanofibers

Also Published As

Publication number Publication date
BE753167A (en) 1971-01-08
DE1934541A1 (en) 1971-01-14

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Legal Events

Date Code Title Description
ST Notification of lapse