EP0629720B1 - Spinning process for the preparation of high thermoweldability polyolefin fibers - Google Patents
Spinning process for the preparation of high thermoweldability polyolefin fibers Download PDFInfo
- Publication number
- EP0629720B1 EP0629720B1 EP94109406A EP94109406A EP0629720B1 EP 0629720 B1 EP0629720 B1 EP 0629720B1 EP 94109406 A EP94109406 A EP 94109406A EP 94109406 A EP94109406 A EP 94109406A EP 0629720 B1 EP0629720 B1 EP 0629720B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spinning
- fibers
- holes
- dtex
- ranges
- 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 - Lifetime
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 95
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000009987 spinning Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 claims description 40
- 229920001577 copolymer Polymers 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 18
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 17
- 239000005977 Ethylene Substances 0.000 claims description 17
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 15
- 239000004711 α-olefin Substances 0.000 claims description 15
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 12
- 229920001384 propylene homopolymer Polymers 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 150000001993 dienes Chemical class 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 5
- 239000002530 phenolic antioxidant Substances 0.000 claims description 4
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 4
- XRBCRPZXSCBRTK-UHFFFAOYSA-N phosphonous acid Chemical class OPO XRBCRPZXSCBRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 abstract description 7
- -1 polypropylene Polymers 0.000 description 15
- 239000004743 Polypropylene Substances 0.000 description 13
- 229920001155 polypropylene Polymers 0.000 description 13
- 229920000642 polymer Polymers 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- 239000008096 xylene Substances 0.000 description 6
- 229920005604 random copolymer Polymers 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- VNQNXQYZMPJLQX-UHFFFAOYSA-N 1,3,5-tris[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CN2C(N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C(=O)N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C2=O)=O)=C1 VNQNXQYZMPJLQX-UHFFFAOYSA-N 0.000 description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 238000003490 calendering Methods 0.000 description 3
- 239000000320 mechanical mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 2
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- BEIOEBMXPVYLRY-UHFFFAOYSA-N [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(C=1C=CC(=CC=1)C=1C=CC(=CC=1)P(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C BEIOEBMXPVYLRY-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- ORECYURYFJYPKY-UHFFFAOYSA-N n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine;2,4,6-trichloro-1,3,5-triazine;2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N.ClC1=NC(Cl)=NC(Cl)=N1.C1C(C)(C)NC(C)(C)CC1NCCCCCCNC1CC(C)(C)NC(C)(C)C1 ORECYURYFJYPKY-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 1
- XYXJKPCGSGVSBO-UHFFFAOYSA-N 1,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-dimethylphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C)=C1CN1C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C1=O XYXJKPCGSGVSBO-UHFFFAOYSA-N 0.000 description 1
- PRBHEGAFLDMLAL-UHFFFAOYSA-N 1,5-Hexadiene Natural products CC=CCC=C PRBHEGAFLDMLAL-UHFFFAOYSA-N 0.000 description 1
- JLZIIHMTTRXXIN-UHFFFAOYSA-N 2-(2-hydroxy-4-methoxybenzoyl)benzoic acid Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1C(O)=O JLZIIHMTTRXXIN-UHFFFAOYSA-N 0.000 description 1
- OSIOKOOENDLTOL-UHFFFAOYSA-N 2-ethylidenebicyclo[2.2.1]hept-3-ene Chemical compound C1CC2C(=CC)C=C1C2 OSIOKOOENDLTOL-UHFFFAOYSA-N 0.000 description 1
- AIBRSVLEQRWAEG-UHFFFAOYSA-N 3,9-bis(2,4-ditert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP1OCC2(COP(OC=3C(=CC(=CC=3)C(C)(C)C)C(C)(C)C)OC2)CO1 AIBRSVLEQRWAEG-UHFFFAOYSA-N 0.000 description 1
- PZRWFKGUFWPFID-UHFFFAOYSA-N 3,9-dioctadecoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound C1OP(OCCCCCCCCCCCCCCCCCC)OCC21COP(OCCCCCCCCCCCCCCCCCC)OC2 PZRWFKGUFWPFID-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-M 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=CC(CCC([O-])=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-M 0.000 description 1
- SWZOQAGVRGQLDV-UHFFFAOYSA-N 4-[2-(4-hydroxy-2,2,6,6-tetramethylpiperidin-1-yl)ethoxy]-4-oxobutanoic acid Chemical compound CC1(C)CC(O)CC(C)(C)N1CCOC(=O)CCC(O)=O SWZOQAGVRGQLDV-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000156978 Erebia Species 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- FLPKSBDJMLUTEX-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) 2-butyl-2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]propanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)C(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)(CCCC)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 FLPKSBDJMLUTEX-UHFFFAOYSA-N 0.000 description 1
- RSOILICUEWXSLA-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 description 1
- XITRBUPOXXBIJN-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- OOCILPYOPQKPJY-UHFFFAOYSA-N calcium;(3,5-ditert-butyl-4-hydroxyphenyl)methyl-ethoxyphosphinic acid Chemical compound [Ca].CCOP(O)(=O)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 OOCILPYOPQKPJY-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical compound C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- WGKLOLBTFWFKOD-UHFFFAOYSA-N tris(2-nonylphenyl) phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C(=CC=CC=1)CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC WGKLOLBTFWFKOD-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/30—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising olefins as the major constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
Definitions
- the present invention relates to a spinning process for the preparation of thermoweldable polyolefin fibers, in particular polypropylene based fibers, suitable for the preparation of nonwoven fabrics.
- Said nonwoven fabrics are particularly suitable for uses requiring considerable softness and tear resistance, as is the case with coverstock for diapers and sanitary wear, which are made from low count fibers, generally ranging from 0.2 to 5 dtex, or with also membranes, made from fibers having a count between 3 and 10 dtex.
- coverstock for diapers and sanitary wear which are made from low count fibers, generally ranging from 0.2 to 5 dtex, or with also membranes, made from fibers having a count between 3 and 10 dtex.
- the fundamental requirement of polyolefin fibers for nonwoven fabrics is that they must bond to each other by means of the joint action of temperature and pressure on which the hot calendering processes are based. This characteristic, called “thermoweldability", is not always present in polyolefin fibers, or at least not in the same degree. In fact basically thermoweldability depends on the type of polyolefin being span, the additives it contains, the type of process and the spinning conditions used.
- thermoweldable fibers obtained from the above mentioned stabilized polyolefin compositions by conventional spinning processes in particular processes for the production of staple fibers.
- the good levels of thermoweldability shown in the examples are due to the selection of the stabilizers.
- fibers having a count ranging from 1.9 to 2.2 dtex are prepared by using a typical "long-spinning" apparatus (characterized, among other things, by high fiber-winding speed) equipped with a die having holes with 0.4 mm diameter.
- the present invention provides a process for the preparation of thermoweldable fibers having preferably a count ranging from 0.2 to 10 dtex, more preferably from 0.5 to 3 dtex, where the dies used have a real or equivalent output diameter of the holes greater than or equal to 0.5 mm, particularly ranging from 0.5 to 2 mm, with the proviso that for fibers having a count greater than or equal to 4 dtex, the ratio of the said output hole diameter to the count is greater than or equal to 0.06 mm/dtex, preferably greater than or equal to 0.08 mm/dtex, more preferably greater than or equal to 0.1 mm/dtex.
- output diameter of the holes is the diameter of the holes at the outside surface of the die, i.e., on the front face of the die from which the fibers exit. Inside the thickness of the die, the diameter of the holes can be different from the diameter of the holes at the output.
- the “equivalent output diameter of the holes” refers to instances where the hole is not round, in which case, for the purpose of the present invention, one considers the diameter of the ideal circle having an area equal to the area of the output hole, which corresponds to the above mentioned equivalent diameter.
- the process of the present invention can be carried out by using both short-spinning apparatuses for the production of staple fibers, and spun-bonding apparatuses.
- thermoweldability of staple fibers improves as the fibers gathering speed decreases.
- the short-spinning apparatuses are used, said apparatuses being characterized, among other things, by low fiber-gathering speeds (less than 500 m/min).
- short-spinning apparatuses allow for a continuous operation, since the spinning speed is compatible with the drawing, crimping and cutting speeds, and due to their simplicity and reduced overall volume, these apparatuses are more economical than the long-spinning ones and suited for small scale productions.
- short-spinning apparatuses did not allow one to obtain staple fibers having good thermoweldability values (higher than 2.5 N, for example, according to the measuring method described in the examples).
- the process of the present invention therefore, assumes particular importance when short-spinning apparatuses are used, because it solves the problem of producing thermoweldable staple fibers even when operating with said apparatuses.
- the hole flow rate ranges from 0.005 to 0.18 g.min, preferably from 0.008 to 0.070 g/min, more preferably from 0.010 to 0.030 g/min.
- the fiber gathering speed ranges from 30 to 500 m/min, preferably from 40 to 250 m/min, more preferably from 50 to 100 m/min.
- the draw ratios range from 1.10 to 3.50, preferably from 1.20 to 2.50.
- the fiber cooling and solidification space at the output of the die (cooling space) is preferably greater than 2 mm, more preferably greater than 10 mm, in particular from 10 to 350 mm.
- cooling space is the distance between the die and the above mentioned air jet or flow.
- the- draw temperature be lower than 100°C, in particular it should range from 15°C to 50°C.
- the spinning temperature for the above short-spinning apparatuses generally ranges from 240°C to 310°C, preferably from 270°C to 300°C.
- the equipment used in the process of spun-bonding normally includes an extruder with a die on its spinning head, a cooling tower, and an air suction gathering device that uses Venturi tubes.
- this device that uses air speed to control the fiber gathering speed, the filaments are usually gathered over a conveyor belt, where they are distributed forming a web for heat welding in a calender.
- the hole flow rate ranges from 0.1 to 2.0 g/min; preferably from 0.2 to 1.0 g/min.
- the space where fibers cool and solidify after leaving the die is preferably greater than 2 mm, more preferably greater than 10 mm and in particular in the range between 10 and 350 mm.
- the fibers are generally cooled by means of an air jet or flow.
- the cooling space is the distance between the die and this air jet or flow.
- the spinning temperature is generally between 230°C adn 300°C, preferably between 240°C and 280°C.
- the amount of diene in (B) is from 1% to 10% by weight.
- the heterophasic copolymers (3) are prepared according to known methods by mixing the components in the molten state, or by sequential copolymerization, and generally contain the copolymer fraction (B) in quantities ranging from 5% to 80% by weight.
- thermoweldable fibers particularly suitable for the preparation of thermoweldable fibers are the following propylene random copolymers:
- copolymers can also be used mixed with each other and/or with isotactic or mainly isotactic propylene homopolymers.
- thermoweldable fibers particularly suitable for the preparation of thermoweldable fibers are heterophasic copolymers comprising from 5% to 95% by weight of an isotactic or mainly isotactic propylene homopolymer, and/or a random propylene copolymer of the above mentioned types from a) to d), and from 95% to 5% by weight of a composition selected from:
- the above mentioned olefin polymers when used in the production of staple fibers the above mentioned olefin polymers have a Melt Flow Rate (MFR), determined according to ASTM D 1238-L, ranging from 0.5 to 100 g/10 min., preferably from 1.5 to 35 g/10 min..
- MFR Melt Flow Rate
- the above mentioned olefin polymers When used in the spun-bonding apparatuses with the process of the present invention, the above mentioned olefin polymers have preferably a MFR value between 5 and 25 g/10 min., in particular from 8 to 15 g/10 min.. These values of MFR constitute an additional distinctive feature of the process of the invention, because in conventional spun-bonding processes polyolefins have a MFR greater than 25 g/10 min.
- the olefin polymers which are subjected to spinning with either process of the present invention are stabilized with the types and quantities of stabilizers described in published European patent application 391438.
- the polyolefins to be used for spinning contain one or more of the following stabilizers:
- the above stabilizers can be added to the polyolefins by means of pelletization or surface coating, or they can be mechanically mixed with the polyolefins.
- phosphites are: tris(2,4-di-tert-butylphenyl)phosphite marketed by CIBA GEIGY under the trademark Irgafos 168; distearyl pentaerythritol diphosphite marketed by BORG-WARNER CHEMICAL under the trademark Weston 618; 4,4'-butylidenebis(3-methyl-6-tert-butylphenyl-di-tridecyl)phosphite marketed by ADEKA ARGUS CHEMICAL under the trademark Mark P; tris(monononyl phenyl)phosphite; bis(2,4-di-tert-butyl)-pentaerythritol diphosphite, marketed by BORG-WARNER CHEMICAL under the trademark Ultranox 626.
- a preferred example of phosphonites is the tetrakis(2,4-di-tert-butylphenyl) 4,4'-diphenylilenediphosphonite, on which Sandostab P-EPQ, marketed by Sandoz, is based.
- the HALS are monomeric or oligomeric compounds containing in the molecule one or more substituted amine, preferably piperidine, groups.
- HALS containing substituted piperidine groups are the compounds sold by CIBA-GEIGY under the following trademarks:
- phenolic antioxidants are: tris-(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-s-triazine-2-4-6-(1H,3H,5H)-trione, marketed by American CYANAMID under the trademark Cyanox 1790; calcium bi[monoethyl(3,5-di-tert-butyl-4-hydroxy-benzyl)phosphonate]; 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-s-triazine-2,4,6(1H,3H,5H)trione; 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; pentaerythrityl-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]; octadecyl 3-(3,5-
- thermoweldability of fibers a nonwoven fabric is prepared from the fiber being tested by calendering under certain given conditions. Subsequently, the tension needed to tear said nonwoven fabric both in the direction parallel and transversal to the calendering is measured.
- the tension value determined in this fashion is considered a measure of the fiber thermowelding capability.
- the result is influenced substantially by the finishing characteristics of the fibers (crimping, surface finishing, thermosetting, etc.), and by the homogeneity of distribution of the fibers entering the calender. To avoid these inconveniences and obtain a more direct evaluation of the fiber thermoweldability characteristics a method has been perfected that will be described below.
- Specimens are prepared from a 400 tex roving (method ASTM D 1577-7) 0.4 meter long, made up of continuous fibers.
- thermowelding is carried out on said specimen using a Bruggel HSC-ETK thermowelding machine, operating at a plate temperature of 150°C, using a clamping pressure of 800 N and 1 second welding times.
- a dynamometer is used to measure the average strength required to separate the two halves of the roving which constitute each specimen at the thermowelding point.
- the result expressed in Newton, is obtained by averaging out at least eight measurements, and represents the thermowelding strength of the fibers.
- the polymers used in the examples to produce the fibers are the following:
- Said mechanical mixture has been obtained by introducing the components into a CACCIA speed mixer model LABO 30, and mixing for 4 minutes at 1400 rpm.
- the Chimassorb 944 is a HALS having the formula wherein n generally ranges from 2 to 20.
- the characteristics of the fibers obtained in this manner are:
- the spinning conditions are as follows:
- the characteristics of the fibers obtained in this manner are:
- Example 1 The same apparatus and conditions of Example 1 are used to produce staple fibers, except that one uses the polypropylene III.
- the characteristics of the fibers obtained in this manner are:
- Staple fibers are produced using the same polymer, apparatus and conditions of Example 1, except that the distance between the die and the cooling airflow is 15 mm.
- the characteristics of the fibers obtained in this manner are:
- Staple fibers are produced using the same polymer, apparatus and conditions of Example 1, except that the drawing occurs at ambient temperature.
- the characteristics of the fibers obtained in this manner are:
- Staple fibers are produced using the same polymer of Example 1, an industrial apparatus made up of 8 spinning units identical to the one described in Example 1, but whose dies have 5.18x10 4 round holes having a output diameter of 0.4 mm.
- the spinning conditions are:
- the characteristics of the fibers obtained in this manner are:
- Comparative example 2 The same apparatus and conditions of Comparative example 2 are used to produce staple fibers, except that polypropylene III is used.
- the spinning conditions are:
- the characteristics of the fibers obtained in this manner are:
- fibers are prepared using a BARMAG 25 mod. 2E1/24D apparatus for spun-bonding, manufactured and sold by BARMER MASHINENFABRIK A.G. Manufacture.
- the lay out of the apparatus is as follows:
- the same polymer is used, with the same apparatus and working under the same conditions as in Example 5, except that the die has 37 circular section holes with a output hole diameter of 0.4 mm.
- the characteristics of the obtained fibers are:
- Fibers are produced with the same apparatus and working under the same conditions as in Example 5, but using polypropylene III.
- the obtained fibers have the following characteristics:
- Fibers are produced with the same polymer used in Example 7, and the same apparatus used in Example 5, but the die contains 37 holes of circular section and the output hole diameter is equal to 0.4 mm.
- the obtained fibers have the following characteristics:
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- General Chemical & Material Sciences (AREA)
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- Nonwoven Fabrics (AREA)
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Abstract
Description
tris(2,4-di-tert-butylphenyl)phosphite marketed by CIBA GEIGY under the trademark Irgafos 168; distearyl pentaerythritol diphosphite marketed by BORG-WARNER CHEMICAL under the trademark Weston 618; 4,4'-butylidenebis(3-methyl-6-tert-butylphenyl-di-tridecyl)phosphite marketed by ADEKA ARGUS CHEMICAL under the trademark Mark P; tris(monononyl phenyl)phosphite; bis(2,4-di-tert-butyl)-pentaerythritol diphosphite, marketed by BORG-WARNER CHEMICAL under the trademark Ultranox 626.
- Chimassorb
- 944
- Chimassorb
- 905
- Tinuvin
- 770
- Tinuvin
- 292
- Tinuvin
- 622
- Tinuvin
- 144
- Spinuvex
- A36
additive | concentration (by weight) |
Irganox 1076 | 0.01% |
Irganox 3114 | 0.01% |
Irgafos 168 | 0.07% |
Calcium stearate | 0.05% |
additive | concentration (by weight) |
Irganox 1076 | 0.01% |
Chimassorb 994 | 0.02% |
Sandostab P-EPQ | 0.05% |
Calcium stearate | 0.05% |
- extruder with a screw having a 25 mm diameter and a length/diameter ratio of 25, and a flow-rate ranging from 1 to 6 Kg/h;
- 2.5 cm3/rev. metering pump;
- die having 61 round holes with an output diameter of 0.8 mm;
- cooling system for the extruded filaments by means of transversal air jet at 18-20°C;
- gathering apparatus with a speed ranging from 1000-6000 m/min.;
- drawing apparatus in steam oven.
- die temperature 280°C
- hole flow rate 0.3 g/min.
- gathering speed 1400 m/min.
- draw ratio 1.3
- draw temperature 100°C
- single fiber count 1.7 dtex (according to ASTM D 1577-79)
- weldability 4.1 N
- single-screw extruder with a 120mm diameter and a length equal to 30 diameters;
- 150 cm3/rev. metering pump;
- die with 3.5x104 round holes and a 0.6 mm output diameter; said holes being situated in the form of a crown;
- cooling device, coaxial to the crown of holes of the die, emitting 20°C air on a plane perpendicular to the exiting fibers.
- temperature 300°C
- hole flow rate 0.018 g/min.
- distance between the die and cooling airflow 5 mm
- gathering speed 70 m/min.
- draw temperature 80°C
- draw ratio 1.4
- single fiber count 2.3 dtex
- weldability 6.85 N
- single fiber count 2.3 dtex
- weldability 6.5 N
- single fiber count 2.3 dtex
- weldability 7.6 N
- single fiber count 2.3 dtex
- weldability 10 N
- temperature 285°C
- hole flow rate 0.018 g/min.
- distance between the die and cooling airflow 5 mm
- gathering speed 64 m/min.
- draw temperature 80°C
- draw ratio 1.5
- single fiber count 2.3 dtex
- weldability 2.35 N
- temperature 295°C
- hole draw ratio 0.024 g/min.
- distance between the die and cooling airflow 5 mm
- gathering speed 70 m/min.
- draw temperature 80°C
- draw ratio 1.35
- single fiber count 2.3 dtex
- weldability 2.2 N
- an extruder with a screw 25 mm in diameter and a ratio lenght/diameter of 24; the extruder has a flow rate between 0.3 and 1.2 kg/hr;
- a metering pump of 0.6 cm3/rev.
- a die with 37 holes of circular section having a output hole diameter of 0.8 mm;
- a cooling system for the extruded fibers by transverse air jet at 18-20°C;
- an air suction gathering device using a Venturi tube, with a gathering speed ranging between 500-4000 m/min.
- die temperature 280°C
- hole flow rate 0.6 g/min.
- gathering speed 2700 m/min.
- distance between the die and and the cooling air jet. 20 mm
- single fiber count 2.2 dtex
- weldability 5.4 N
The characteristics of the obtained fibers are:
- single fiber count 2.2 dtex
- weldability 2.04 N
- rectangular dies containing 931 holes of circular section and with a output hole diameter of 0.9 mm.
- an air cooling device at 20°C, acting on a plane perpendicular to the emergent fibers.
- temperature 280°C
- hole flow rate 0.52 g/min.
- distance between the die and the cooling air flow 30 mm
- gathering speed 2300 m/min.
- single fiber count 2.3 dtex
- weldability 6.4 N
The obtained fibers have the following characteristics:
- single fiber count 2.2 dtex
- weldability 5.8 N
The obtained fibers have the following characteristics:
- single fiber count 2.2 dtex
- weldability 2.1 N
Claims (19)
- A process for the preparation of thermoweldable polyolefin fibers, wherein the operation is carried out using a short-spinning apparatus for staple fibers and a gathering speed of from 40 to 250 m/min., and wherein the dies used have a real or equivalent output diameter of the holes greater than or equal to 0.5 mm, with the proviso that for fibers having a count greater than or equal to 4 dtex, the ratio cf said output diameter of the holes to the count is greater than or equal to 0.06 mm/dtex.
- The process of claim 1 for the preparation of thermoweldable polyolefin fibers having a count ranging from 0.5 to 3 dtex, wherein the dies used have a real or equivalent output diameter of the holes ranging from 0.5 to 2 mm.
- The process of claim 1, wherein the real or equivalent output diameter of the holes ranges from 0.5 to 2 mm.
- The process of claims 1 to 3, wherein the hole flow rate ranges from 0.005 to 0.18 g/min, the fiber gathering speed ranges from 50 to 100 m/min. and the draw ratio ranges from 1.10 to 3.50.
- The process of claims 1 and 2, wherein the spinning temperature ranges from 240 to 310°C.
- The process of claim 5, wherein the spinning temperature ranges from 270 to 300°C.
- The process of claims 1 and 2, wherein the draw temperature used is lower than 100°C.
- The process of claims 1 and 2, wherein the olefin polymers subjected to spinning have a MFR from 1.5 to 35 g/10 min.
- A process for the preparation of thermoweldable polyolefin fibers, wherein the operation is carried out using a spun-bonding apparatus and the dies used have a real or equivalent output diameter of the holes greater than or equal to 0.5 mm, with the proviso that for fibers having a count greater than or equal to 4 dtex, the ratio of said output diameter of the holes to the count is greater than or equal to 0.06 mm/dtex.
- The process of claim 9 for the preparation of thermoweldable polyolefin fibers having a count ranging from 0.5 to 3 dtex, wherein the dies used have a real or equivalent output diameter of the holes ranging from 0.5 to 2 mm.
- The process of claim 9, wherein the real or equivalent output diameter of the holes ranges from 0.5 to 2 mm..
- The process of claims 9 to 11, wherein the hole flow rate ranges from 0.1 to 2.0 g/min. and the fiber gathering speed ranges from 400 to 4500 m/min.
- The process of claims 9 and 10, wherein the olefin polymers subjected to spinning have a MFR from 5 to 25 g/10 min..
- The process of claim 13, wherein the olefin polymers subjected to spinning have a MFR from 8 to 15 g/10 min..
- The process of claims 9 and 10, wherein the spinning temperature is between 230 and 300°C.
- The process of claim 15, wherein the spinning temperature is between 240 and 280°C.
- The process of claims 1, 2, 9 and 10, wherein the cooling space is greater than 2 mm.
- The process of claims 1, 2, 9 and 10, wherein the olefin polymers subjected to spinning are selected from:1) isotactic, or mainly isotactic propylene homopolymers;2) crystalline copolymers of propylene with ethylene and/or C4-C8 alpha-olefins wherein the total comonomer content ranges from 0.05% to 20% by weight, or mixtures of said copolymers with isotactic or mainly isotactic propylene homopolymers;3) heterophasic copolymers comprising (A) a propylene homopolymer and/or one of the copolymers of item 2), and an elastomeric fraction (B) comprising copolymers of ethylene with propylene and/or a C4-C8 alpha-olefin, optionally containing minor quantities of a diene.
- The process of claims 1, 2, 9 and 10, wherein the olefin polymers subjected to spinning contain one or more of the following stabilizers:a) from 0.01 to 0.5% by weight of one or more organic phosphites and/or phosphonites;b) from 0.005 to 0.5% by weight of one or more HALS;
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI931308 | 1993-06-17 | ||
IT001308 IT1264839B1 (en) | 1993-06-17 | 1993-06-17 | Spinning process for prodn. of thermo:weldable polyolefin fibres - provides nonwoven fabrics with good softness and tear resistance e.g. cover:stock for nappy |
ITMI940390 IT1274029B (en) | 1994-03-04 | 1994-03-04 | Spinning process for prodn. of thermo:weldable polyolefin fibres - provides nonwoven fabrics with good softness and tear resistance e.g. cover:stock for nappy |
ITMI940390 | 1994-03-04 |
Publications (3)
Publication Number | Publication Date |
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EP0629720A2 EP0629720A2 (en) | 1994-12-21 |
EP0629720A3 EP0629720A3 (en) | 1995-07-12 |
EP0629720B1 true EP0629720B1 (en) | 1998-01-28 |
Family
ID=26331006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94109406A Expired - Lifetime EP0629720B1 (en) | 1993-06-17 | 1994-06-17 | Spinning process for the preparation of high thermoweldability polyolefin fibers |
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Country | Link |
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EP (1) | EP0629720B1 (en) |
JP (1) | JP2849042B2 (en) |
KR (1) | KR100199683B1 (en) |
CN (1) | CN1069352C (en) |
AT (1) | ATE162860T1 (en) |
CA (1) | CA2126013C (en) |
DE (1) | DE69408213T2 (en) |
DK (1) | DK0629720T3 (en) |
ES (1) | ES2113579T3 (en) |
FI (1) | FI942889A (en) |
HK (1) | HK1008435A1 (en) |
TW (1) | TW270153B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US5773375A (en) * | 1996-05-29 | 1998-06-30 | Swan; Michael D. | Thermally stable acoustical insulation |
DE19722579B4 (en) * | 1997-05-30 | 2004-02-12 | Borealis Gmbh | Fibers and yarns of high tenacity and elongation, process for their production and use |
DE19720135B4 (en) * | 1997-05-14 | 2005-12-08 | Borealis Gmbh | Non-postdrawn polyolefin fibers and high tenacity and elongated polyolefin yarns and fabrics made therefrom |
DE59812014D1 (en) * | 1997-05-14 | 2004-11-04 | Borealis Gmbh Schwechat Mannsw | Polyolefin fibers and polyolefin yarns and textile fabrics made from them |
US5948334A (en) * | 1997-07-31 | 1999-09-07 | Fiberco, Inc. | Compact long spin system |
US5858293A (en) * | 1997-09-30 | 1999-01-12 | Montell North America Inc. | Method for producing spunbonded materials with improved tensile strength |
WO2002031237A1 (en) * | 2000-10-11 | 2002-04-18 | Sunoco, Inc. (R&M) | High strength spunbond fabric |
MXPA03006783A (en) * | 2001-02-02 | 2004-10-15 | Polymer Group Inc | Process for producing continuous filament nonwoven fabric. |
US6787066B2 (en) | 2001-11-16 | 2004-09-07 | Sunoco Inc (R&M) | Stabilization system for improving the melt viscosity of polypropylene during fiber processing |
EP3448342B1 (en) | 2016-04-29 | 2022-10-12 | Beaulieu International Group NV | Bi-component staple or short-cut trilobal fibres and their uses |
CN107880400A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | A kind of impact polypropylene resin with low tension fracture elongation rate |
KR102631607B1 (en) | 2023-07-19 | 2024-01-31 | 공필주 | One-touch fastening type separable communication |
Family Cites Families (8)
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DE2545223C3 (en) * | 1975-10-09 | 1978-03-30 | Basf Ag, 6700 Ludwigshafen | Self-extinguishing thermoplastic molding compounds |
JPS53147816A (en) * | 1977-05-24 | 1978-12-22 | Chisso Corp | Hot-melt fiber of polypropylene |
JPS575913A (en) * | 1980-05-27 | 1982-01-12 | Showa Electric Wire & Cable Co Ltd | Crosslinked polyolefin fiber |
JPS58144113A (en) * | 1982-02-16 | 1983-08-27 | Taisei Rayon Kk | Production of polyethylene multifilament yarn for fish net |
JPS61239011A (en) * | 1985-04-15 | 1986-10-24 | Kanebo Ltd | Conductive synthetic fiber of polyolefin and production thereof |
JPS62282014A (en) * | 1986-05-30 | 1987-12-07 | Seiken:Kk | Production of fiber |
IT1229141B (en) * | 1989-04-06 | 1991-07-22 | Himont Inc | POLYOLEFINS SUITABLE FOR SPINNING AND THERMAL SEALABLE FIBERS OBTAINED FROM THEM. |
DE69324280T2 (en) * | 1992-01-13 | 1999-08-12 | Hercules Inc., Wilmington, Del. | Heat-bondable fibers for resistant nonwovens |
-
1994
- 1994-06-16 FI FI942889A patent/FI942889A/en unknown
- 1994-06-16 CA CA002126013A patent/CA2126013C/en not_active Expired - Fee Related
- 1994-06-16 KR KR1019940013636A patent/KR100199683B1/en not_active IP Right Cessation
- 1994-06-17 CN CN94107510A patent/CN1069352C/en not_active Expired - Fee Related
- 1994-06-17 AT AT94109406T patent/ATE162860T1/en not_active IP Right Cessation
- 1994-06-17 JP JP6159156A patent/JP2849042B2/en not_active Expired - Fee Related
- 1994-06-17 DK DK94109406T patent/DK0629720T3/en active
- 1994-06-17 ES ES94109406T patent/ES2113579T3/en not_active Expired - Lifetime
- 1994-06-17 TW TW083105487A patent/TW270153B/zh active
- 1994-06-17 EP EP94109406A patent/EP0629720B1/en not_active Expired - Lifetime
- 1994-06-17 DE DE69408213T patent/DE69408213T2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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CA2126013C (en) | 2000-08-15 |
FI942889A (en) | 1994-12-18 |
DE69408213D1 (en) | 1998-03-05 |
JPH07189021A (en) | 1995-07-25 |
DK0629720T3 (en) | 1998-09-23 |
KR100199683B1 (en) | 1999-06-15 |
TW270153B (en) | 1996-02-11 |
HK1008435A1 (en) | 1999-05-07 |
JP2849042B2 (en) | 1999-01-20 |
ES2113579T3 (en) | 1998-05-01 |
CN1069352C (en) | 2001-08-08 |
ATE162860T1 (en) | 1998-02-15 |
CN1106867A (en) | 1995-08-16 |
DE69408213T2 (en) | 1998-07-09 |
EP0629720A3 (en) | 1995-07-12 |
EP0629720A2 (en) | 1994-12-21 |
CA2126013A1 (en) | 1994-12-18 |
KR950000933A (en) | 1995-01-03 |
FI942889A0 (en) | 1994-06-16 |
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