CA2410555A1 - Polymer filaments having profiled cross-section - Google Patents
Polymer filaments having profiled cross-section Download PDFInfo
- Publication number
- CA2410555A1 CA2410555A1 CA002410555A CA2410555A CA2410555A1 CA 2410555 A1 CA2410555 A1 CA 2410555A1 CA 002410555 A CA002410555 A CA 002410555A CA 2410555 A CA2410555 A CA 2410555A CA 2410555 A1 CA2410555 A1 CA 2410555A1
- Authority
- CA
- Canada
- Prior art keywords
- yarn
- filament
- cross
- profiled
- section
- 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.)
- Granted
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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
The invention provides a profiled polymer filament having an open hollow cro ss- sectional shape normal to the longitudinal axis of the filament, wherein the cross-section is dimensioned to prevent the filament from interlocking with a second filament of the same cross-section. The invention also provides metho ds of manufacture of such filaments by melt spinning a polyamide, and spinneret s suitable for use in melt spinning such filaments.
Claims (38)
1. A profiled polymer filament having an open hollow cross-sectional shape normal to the longitudinal axis of the filament, wherein the cross-section is dimensioned to prevent the filament from interlocking with a second filament of the same cross-section.
2. A profiled polymer filament having an open hollow cross-sectional shape normal to the longitudinal axis of the filament, wherein a region proximate to each tip of the cross-section is wider than a spacing between said regions defining an opening of the open hollow cross-section.
3. A profiled polymer filament according to claim 1 or claim 2, wherein the cross-section comprises a solid part, a central hollow region, and an opening leading into the central hollow region, wherein the opening subtends a radial angle of less than 90°.
4. A profiled polymer filament according to claim 3, wherein the opening subtends a radial angle of less than 60°.
5. A profiled polymer filament according to claim 1 or claim 2, wherein the cross-section comprises a solid region, a central hollow region, and an aperture leading into the central hollow region, and wherein the radial thickness of the solid part of the filament cross-section in a region proximate to the aperture is greater than the mean radial thickness of the solid region.
6. A profiled polymer filament according to any preceding claim, wherein the cross-section comprises a base portion having first and second ends and two side portions, the side portions extending in substantially parallel relationship from the first and second ends of the base portion.
7. A profiled polymer filament according to claim 6, wherein said base portion and two side portions are arcuate in shape.
8. A profiled polymer filament having a cross-sectional shape normal to the longitudinal axis of the filament, said cross-sectional shape having a central arcuate portion and first and second elongated leg portions, each of said leg portions having proximal and distal end portions, said proximal end portions joining to said central portion and said distal end portions joining to foot portions on each leg portion, said foot portions having a dimension F, said leg portions and said central arcuate portion defining an open portion, said foot portions oriented in a substantially parallel relationship and defining an aperture leading to said open portion; said aperture having a dimension D, wherein dimension D is less than dimension F.
9. A profiled polymer filament according to any preceding claim, wherein the polymer is a polyamide.
10. A profiled polymer filament according to claim 9, wherein the polyamide polymer has a relative viscosity, by a formic acid method, greater than 40.
11. A profiled polymer filament according to claim 10, wherein the relative viscosity of the polyamide by a formic acid method is in the range of 46 to 56.
12. A profiled filament according to any preceding claim, wherein the filament linear density is less than 20 dtex.
13. A profiled filament according to any preceding claim, wherein the filament linear density is less than 4 dtex.
14. A profiled filament according to any preceding claim, wherein the filament cross-section is substantially constant along the length of the filament.
15. A profiled filament according to any preceding claim, wherein the polymer is selected from the group of nylon 66 and nylon 6 and copolymers of nylon 66 or nylon 6.
16. A multifilament yarn comprising at least a portion of the profiled filaments of any one of claims 1 to 15.
17. A multifilament yarn according to claim 16, wherein the yarn consists essentially of said open hollow filaments according to the present invention.
18. A multifilament yarn according to claim 16, wherein the yarn is a drawn yarn.
22~
22~
19. A multifilament yarn according to claim 18, wherein the yarn has an elongation to break of about 20 to 50% and a tenacity of about 25 to 60 cN/tex.
20. A multifilament yarn according to claim 16, wherein the yarn is a partially oriented yarn (POY).
21. A multifilament yarn according to claim 20, wherein the yarn has an elongation to break of about 55 to 85% and a tenacity of about 25 to 40 cN/tex.
22. An article comprising at least a portion of the multifilament yarn of claim 16.
23. An article according to claim 22, wherein the article comprises a textile fabric that is knitted or woven from the said multifilament yarn.
24. A spinneret for the production of the profiled open hollow filaments according to any one of claims 1 to 21 by melt extrusion of a polymer into filaments, wherein the spinneret comprises a plate having upper and lower surfaces connected by an assembly of capillaries, and either (a) each capillary has an open hollow transverse cross-section, or (b) each capillary comprises two adjacent segments, whereby the open hollow filament cross section longitudinal to the axis of the filament is obtained as the molten polymer streams from each segment coalesce at a point between the segments.
25. A spinneret according to claim 24, wherein:
each capillary is comprised of two segments; each segment is comprised of a straight length portion having at each end a junction with a pair of projecting portions; at the first end, the pair of projecting portions are of equal area and each comprise a straight portion terminating in a round portion; at the second end the pair of projecting portions are of unequal area and each comprise a straight portion terminating in a round portion.
each capillary is comprised of two segments; each segment is comprised of a straight length portion having at each end a junction with a pair of projecting portions; at the first end, the pair of projecting portions are of equal area and each comprise a straight portion terminating in a round portion; at the second end the pair of projecting portions are of unequal area and each comprise a straight portion terminating in a round portion.
26. A spinneret according to claim 25, wherein each segment is the mirror image of the other segment.
27. A spinneret according to claim 26, wherein each segment is the nonsuperimposable mirror image of the other segment.
28. A spinneret according to claim 24, wherein the capillaries themselves have an open hollow cross-section, each capillary having a cross sectional shape comprising:
a first straight portion with a first end and a second end opposite each other;
a second straight portion and a third straight portion bifurcating from the first end of the first portion, wherein the second straight portion terminates in a round portion and the third straight portion extends to a first point of bifurcation;
a fourth straight portion and a fifth straight portion extending from said first point of bifurcation, wherein the fourth and fifth straight portions have unequal areas and each terminate in round portions;
a sixth straight portion and a seventh straight portion bifurcating from the second end of the first straight portion, wherein the sixth straight portion~~
terminates in a round portion and the seventh straight portion extends to a second point of bifurcation; and an eighth straight portion and a ninth straight portion extending from said second point of bifurcation, wherein the eighth and ninth straight portions having unequal areas and each terminate in round portions.
a first straight portion with a first end and a second end opposite each other;
a second straight portion and a third straight portion bifurcating from the first end of the first portion, wherein the second straight portion terminates in a round portion and the third straight portion extends to a first point of bifurcation;
a fourth straight portion and a fifth straight portion extending from said first point of bifurcation, wherein the fourth and fifth straight portions have unequal areas and each terminate in round portions;
a sixth straight portion and a seventh straight portion bifurcating from the second end of the first straight portion, wherein the sixth straight portion~~
terminates in a round portion and the seventh straight portion extends to a second point of bifurcation; and an eighth straight portion and a ninth straight portion extending from said second point of bifurcation, wherein the eighth and ninth straight portions having unequal areas and each terminate in round portions.
29. A process for making drawn yarns with a modified filament cross section according to any one of claims 1 to 21, the process comprising: extruding a polyamide melt through a spinneret according to any one of claims 24 to 28; cooling the extruded melt in a cross flow of air to form solid filaments; optionally passing the quenched filaments through a steam atmosphere, applying a fibre finish oil, optionally interlacing the yarn, passing the yarn over feed roll and draw roll pair, said feed and draw rolls differing in surface speed by a fixed amount, treating the draw yarn to reduce the final yarn shrinkage for good yarn package formation, optionally applying a fibre finish oil, interlacing the yarn and winding up the filaments at a speed greater than 3000 m/min.
30. A process for making partially oriented yarns (POY) with a modified filament cross section according to any one of claims 1 to 21, the process comprising:
extruding a polyamide melt through a spinneret according to any one of claims 24 to 28; cooling the extruded melt in a cross flow of air to form a solid filament; optionally passing the quenched filaments through a steam atmosphere, applying a fibre finish oil, optionally passing the yarn over tension control rolls, optionally interlacing the yarn and winding up the filament at a speed greater than 3000 m/min.
extruding a polyamide melt through a spinneret according to any one of claims 24 to 28; cooling the extruded melt in a cross flow of air to form a solid filament; optionally passing the quenched filaments through a steam atmosphere, applying a fibre finish oil, optionally passing the yarn over tension control rolls, optionally interlacing the yarn and winding up the filament at a speed greater than 3000 m/min.
31. A process according to claim 29 or 30, wherein the polymer is a polyamide of 40 to 60 RV
(measured in formic acid)
(measured in formic acid)
32. A process according to claim 29 or 30, wherein the spinneret temperature is about 245 to 295°C
33. A process according to any one of claims 29 to 32, wherein the air velocity of the cross flow of air is about 0.15 to 0.5 meters per minute.
34. A process according to any one of claims 29, 31, 32 or 33, wherein the cooled filaments are further treated as follows before winding up: the cooled filaments are converged into a yarn bundle; the yarn bundle is forwarded to a first godet (the feed roll) followed by a second godet 94 (the draw roll), wherein the second godet is moving at a surface speed of 10 to 100% greater than that of the feed roll to draw the yarn and thereby reduce the overall yarn titer; and heat treating the drawn yarn to set the draw and to relax the yarn to provide a drawn yarn.
35. A process according to any one any one of claims 30 to 33, wherein the cooled filaments are further treated as follows before winding up: the cooled filaments are converged into a yarn; the converged yarn is forwarded through a steam atmosphere containing an interfloor tube; the steam treated yarn is intermingled and wound up to provide a partially oriented yarn (POY).
36. A multifilament air jet textured yarn produced from said drawn yarn according to claim 18.
37. A multifilament air jet textured yarn produced from said partially oriented yarn according to claim 20.
38. A multifilament false twist textured (FTT) yarn produced from said partially oriented yarn according to claim 20.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0016926.8 | 2000-07-10 | ||
| GB0016926A GB2364667A (en) | 2000-07-10 | 2000-07-10 | Polymer filaments having open hollow cross-section |
| PCT/US2001/021251 WO2002004720A1 (en) | 2000-07-10 | 2001-07-05 | Polymer filaments having profiled cross-section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2410555A1 true CA2410555A1 (en) | 2002-01-17 |
| CA2410555C CA2410555C (en) | 2010-05-25 |
Family
ID=9895377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2410555A Expired - Fee Related CA2410555C (en) | 2000-07-10 | 2001-07-05 | Polymer filaments having profiled cross-section |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP1299581B1 (en) |
| JP (1) | JP2004502882A (en) |
| KR (1) | KR100761640B1 (en) |
| CN (1) | CN1291075C (en) |
| AT (1) | ATE401434T1 (en) |
| AU (1) | AU2001271834A1 (en) |
| BR (1) | BR0112503B1 (en) |
| CA (1) | CA2410555C (en) |
| DE (1) | DE60134856D1 (en) |
| ES (1) | ES2310184T3 (en) |
| GB (1) | GB2364667A (en) |
| MX (1) | MXPA03000149A (en) |
| PL (1) | PL205183B1 (en) |
| SK (1) | SK162003A3 (en) |
| TW (1) | TW513493B (en) |
| WO (1) | WO2002004720A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004036030A1 (en) * | 2004-07-23 | 2006-02-16 | Wabco Gmbh & Co.Ohg | Thread for acoustic insulation material, in particular for silencers in compressed air devices |
| SI2959509T1 (en) | 2013-02-14 | 2018-11-30 | Nanopareil, Llc | Electrospun hybrid nanofibre felt, method for making the same, and method for purifying biomolecules |
| KR101508847B1 (en) * | 2013-10-15 | 2015-04-08 | 도레이첨단소재 주식회사 | Yarn for a velvet textile and the manufacturing method thereof |
| WO2018184378A1 (en) * | 2017-04-07 | 2018-10-11 | 优彩环保资源科技股份有限公司 | High-strength high-tensile composite functional fibre |
| CN112430871A (en) * | 2020-09-30 | 2021-03-02 | 福建凯邦锦纶科技有限公司 | Production method of low-curl high-modulus yoga fabric chinlon stretch yarn |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB985295A (en) * | 1960-04-22 | 1965-03-03 | Celanese Corp | Hollow artificial filaments and spinnerets for their production |
| CA1035496A (en) * | 1973-10-12 | 1978-07-25 | Upjohn Company (The) | High temperature resistant aromatic copolyimide fibers |
| JPS5951630B2 (en) * | 1977-01-18 | 1984-12-14 | 大和紡績株式会社 | Feather-like polyester fiber |
| JPS56169813A (en) | 1980-05-29 | 1981-12-26 | Toyobo Co Ltd | Synthetic fiber for wadding |
| JPS58214549A (en) * | 1982-06-03 | 1983-12-13 | 帝人株式会社 | Synthetic fiber multifilament fabric excellent in functional durability |
| JPS6183316A (en) * | 1984-09-28 | 1986-04-26 | Nippon Ester Co Ltd | Composite polyester fiber |
| JP2708428B2 (en) * | 1987-08-21 | 1998-02-04 | 帝人株式会社 | Method for producing polyester false twisted crimped yarn |
| JP2842905B2 (en) * | 1989-12-01 | 1999-01-06 | 帝人株式会社 | Multileaf cross section elastic filament |
| JPH08246225A (en) * | 1995-03-06 | 1996-09-24 | Kuraray Co Ltd | Modified cross-section hollow fiber and its production |
| WO1996035010A1 (en) * | 1995-05-01 | 1996-11-07 | Teijin Limited | Cellulose acetate fiber having noncircular section, assembly thereof, and process for preparing the same |
| JP3846955B2 (en) * | 1997-01-28 | 2006-11-15 | 旭化成せんい株式会社 | Special cross-section polyester fiber |
-
2000
- 2000-07-10 GB GB0016926A patent/GB2364667A/en not_active Withdrawn
-
2001
- 2001-07-05 BR BRPI0112503-6A patent/BR0112503B1/en not_active IP Right Cessation
- 2001-07-05 JP JP2002509570A patent/JP2004502882A/en active Pending
- 2001-07-05 MX MXPA03000149A patent/MXPA03000149A/en active IP Right Grant
- 2001-07-05 SK SK16-2003A patent/SK162003A3/en not_active Application Discontinuation
- 2001-07-05 EP EP01950881A patent/EP1299581B1/en not_active Expired - Lifetime
- 2001-07-05 CA CA2410555A patent/CA2410555C/en not_active Expired - Fee Related
- 2001-07-05 AT AT01950881T patent/ATE401434T1/en not_active IP Right Cessation
- 2001-07-05 CN CNB018125689A patent/CN1291075C/en not_active Expired - Fee Related
- 2001-07-05 DE DE60134856T patent/DE60134856D1/en not_active Expired - Lifetime
- 2001-07-05 AU AU2001271834A patent/AU2001271834A1/en not_active Abandoned
- 2001-07-05 WO PCT/US2001/021251 patent/WO2002004720A1/en active Application Filing
- 2001-07-05 ES ES01950881T patent/ES2310184T3/en not_active Expired - Lifetime
- 2001-07-05 PL PL362054A patent/PL205183B1/en not_active IP Right Cessation
- 2001-07-05 KR KR1020037000306A patent/KR100761640B1/en not_active IP Right Cessation
- 2001-07-10 TW TW090116876A patent/TW513493B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1500161A (en) | 2004-05-26 |
| CN1291075C (en) | 2006-12-20 |
| CA2410555C (en) | 2010-05-25 |
| BR0112503A (en) | 2004-08-24 |
| ATE401434T1 (en) | 2008-08-15 |
| AU2001271834A1 (en) | 2002-01-21 |
| SK162003A3 (en) | 2004-06-08 |
| GB0016926D0 (en) | 2000-08-30 |
| TW513493B (en) | 2002-12-11 |
| ES2310184T3 (en) | 2009-01-01 |
| EP1299581A1 (en) | 2003-04-09 |
| DE60134856D1 (en) | 2008-08-28 |
| EP1299581B1 (en) | 2008-07-16 |
| KR100761640B1 (en) | 2007-10-04 |
| JP2004502882A (en) | 2004-01-29 |
| BR0112503B1 (en) | 2011-06-14 |
| GB2364667A (en) | 2002-02-06 |
| PL362054A1 (en) | 2004-10-18 |
| MXPA03000149A (en) | 2003-09-22 |
| PL205183B1 (en) | 2010-03-31 |
| KR20030020918A (en) | 2003-03-10 |
| WO2002004720A1 (en) | 2002-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |