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1. (WO2007006438) METHOD FOR IMPROVING FILAMENT COHESIVENESS OF CHOPPED ARAMID FIBER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/006438 International Application No.: PCT/EP2006/006419
Publication Date: 18.01.2007 International Filing Date: 01.07.2006
IPC:
B29B 9/14 (2006.01) ,D01F 11/08 (2006.01) ,D06M 15/564 (2006.01) ,D06M 15/507 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
9
Making granules
12
characterised by structure or composition
14
fibre-reinforced
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
F
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
11
Chemical after-treatment of artificial filaments or the like during manufacture
04
of synthetic polymers
08
of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D TEXTILES; PAPER
06
TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
M
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15
Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
19
with synthetic macromolecular compounds
37
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
564
Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
D TEXTILES; PAPER
06
TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
M
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15
Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
19
with synthetic macromolecular compounds
37
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
507
Polyesters
Applicants:
TEIJIN ARAMID B.V. [NL/NL]; Westervoortsedijk 73 NL-6827 AV Arnhem, NL (AllExceptUS)
WILLEMSEN, Stephanus [NL/NL]; NL (UsOnly)
OLDE, Hendrik, Berend [NL/NL]; NL (UsOnly)
Inventors:
WILLEMSEN, Stephanus; NL
OLDE, Hendrik, Berend; NL
Agent:
HEIMANN, Anette; CPW GmbH Kasinostrasse 19-21 42103 Wuppertal, DE
Priority Data:
05014815.408.07.2005EP
Title (EN) METHOD FOR IMPROVING FILAMENT COHESIVENESS OF CHOPPED ARAMID FIBER
(FR) PROCEDE D'AMELIORATION DE LA COHESION DE FILAMENTS DE FIBRES ARAMIDES HACHEES
Abstract:
(EN) The invention pertains to a method for improving filament cohesiveness of chopped aramid fiber including the steps of impregnating a film-forming binding agent into the fiber, drying the fiber, optionally applying a finish to the fiber, and chopping the fiber to pieces of 1 to 16 mm length, characterized in that the fiber prior to applying the binding agent is subjected to a twisting process to obtain a fiber having a twisting level of 10 to 150 tpm and that the chopping of the fiber is performed in a rotary chopper.
(FR) L'invention concerne un procédé d'amélioration de la cohésion de filaments de fibres aramides hachées, ledit procédé comprenant les étapes suivantes : imprégner un liant filmogène dans la fibre, sécher la fibre, appliquer éventuellement un apprêt plastique à la fibre, et hacher la fibre en des morceaux de longueur comprise entre 1 et 16 mm, caractérisé en ce que, avant l'application du liant, la fibre est soumise à un procédé de torsion de manière à obtenir une fibre ayant un niveau de torsion compris entre 10 et 150 tpm, et en ce que le broyage de la fibre est effectué à l'aide d'un hacheur rotatif.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXMX/a/2008/000152VN16926KR1020080024516AR055980EP1910050ZA2008/00082
JP2009500531RU02389604US20080251965BRPI0612658CN101218079CA2614229
PT1910050AU2006268994DK1910050ID048.1421IN127/CHENP/2008