US20020038499A1 - Method and an apparatus for strengthening yarns - Google Patents
Method and an apparatus for strengthening yarns Download PDFInfo
- Publication number
- US20020038499A1 US20020038499A1 US09/965,177 US96517701A US2002038499A1 US 20020038499 A1 US20020038499 A1 US 20020038499A1 US 96517701 A US96517701 A US 96517701A US 2002038499 A1 US2002038499 A1 US 2002038499A1
- Authority
- US
- United States
- Prior art keywords
- yarn
- core
- fibers
- stitch base
- yarns
- 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.)
- Abandoned
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Classifications
-
- 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
- D04H18/00—Needling machines
- D04H18/02—Needling machines with needles
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
Definitions
- the invention relates to a method for strengthening a yarn which is provided with fibers at least in a sheath zone enclosing the core zone.
- the strength of fibers which are provided with a sheath zone made of fibers which enclose the core zone depends, among other things, on the anchoring of the enveloping fibers in the yarn core. If the yarn is obtained by a twisting of a fiber slubbing, the enveloping fibers are usually well incorporated in the fiber structure as a result of the twisting of the stubbing. If a yarn core is wrapped around with fibers, the connection between the enveloping fibers and the yarn core remains limited to the friction between the enveloping fibers and the surface of the yarn core, thus giving rise to the likelihood that in the case of a respective load, the fiber sheath may be displaced against the yarn core in the longitudinal direction of the yarn.
- the invention is thus based on the object of mechanically strengthening a yarn of the kind mentioned above with the help of a comparably simple method, so that not only higher strength requirements can be met, but also the likelihood of an untwisting of the twist of the yarn can be avoided.
- the invention achieves the above object in such a way that fibers are needled from the sheath zone through the core zone along the yarn.
- the side walls of the guide groove which can be formed by a groove in the stitch base or guide rules provided on the stitch base, prevent a lateral migration of the yarn to be needled, so that the needles need merely be disposed in one row on the needle board in the direction of the guide groove in order to needle the yarn pulled through the guide groove in such a way that the enveloping fibers are pulled through the core zone of the yarn.
- the enveloping fibers extending through the core zone to the opposite sheath zone substantially prevent any relative movements between the sheath and core zones, so that a yarn needled in this manner is provided not only with favorable strength values, but is also advantageously protected against untwisting.
- the passage speed of the yarns to be needled can be kept relatively high in the apparatuses provided for such purposes, which allows a favorable adaptation to the working speed of downstream yarn treatment.
- the stitch base can be provided with several parallel guide grooves for one yarn each. The smooth entry and exit of the yarns into and out of the guide grooves can be enforced in a simple way by guide eyes for the yarns.
- the clearance of the guide groove can decrease in the direction of needle penetration so that the yarn, depending on its respective thickness, rests on the two side walls of the guide groove when the yarn to be needled is pulled into the guide groove.
- the stitch base can be provided with a convexly arched arrangement at least in the entrance and exit zones, so that in the case of a tensile stress on the yarn to be needled, a force component is obtained which presses the yarn against the stitch base in the guide groove.
- FIG. 1 shows an apparatus in accordance with the invention for strengthening a yarn in a simplified, partly sectional side view
- FIG. 2 shows a sectional view along line II-II of FIG. 1 on an enlarged scale
- FIG. 3 shows an embodiment of an apparatus in accordance with the invention in a representation corresponding to FIG. 1;
- FIG. 4 shows on an enlarged scale a schematic longitudinal sectional view through a yarn which is strengthened according to FIG. 1, and
- FIG. 5 shows a schematic longitudinal sectional view through a yarn strengthened according to FIG. 3.
- the apparatus according to FIG. 1 consists substantially of a stitch base 1 and a needle board 2 which is opposite of stitch base 1 and is inserted in a conventional manner in a needle beam 3 .
- the needle beam 3 is driven reciprocatingly by way of an eccentric drive in the needle-penetration direction of needles 4 .
- the stitch base 1 in accordance with the invention is associated with parallel guide grooves 5 for the yarns 6 to be needled which are held under tensile load between a roller feed 7 and a roller draw-off 8 .
- Additional guide eyes 9 can be provided for the purpose of improved guidance of the yarns 6 .
- the guide grooves 5 are arranged in the form of guide channels in the stitch base 1 , this arrangement is in no way mandatory.
- the guide grooves 5 could also be formed by guide rules on the stitch base 1 , since the lateral guidance of the yarns 6 is concerned in particular.
- the channels of the guide grooves 5 are rounded off towards the groove base according to FIG. 2, which leads to an advantageous lateral guidance for the yarns 6 , which are pulled into the guide grooves because the stitch base 1 is provided on the inlet and outlet side with a convex curvature in the direction of passage of yarns 6 , so that force components are obtained as a result of the tensile load of yarns 6 , which force components press against the stitch base 1 .
- Said force components which occur in the curvature zone are not sufficient, however, in order to allow the omission of a stripper 10 which is disposed between the stitch base 1 and the needle board 2 .
- the embodiment according to FIG. 3 differs from the one according to FIG. 1 merely by the arrangement of the stitch base 1 which is continuously curved in a convex manner from the inlet to the outlet side, so that force components which are perpendicular to the stitch base 1 are obtained over the entire guide length of the guide grooves 5 , which force components press the yarns 6 against the stitch base 1 .
- a stripper 10 is used nevertheless in order to ensure a calmed yarn guidance which is advantageous for the needling process.
- FIGS. 1 and 3 differ not only with respect to the forces acting upon the yarns 6 , but particularly by the type of needling as is illustrated by the FIGS. 4 and 5 which each show a yarn 6 with a yarn core 11 and a fiber sheath 12 which can consist of enveloping fibers which are wound about the fiber core 11 .
- the yarn core 11 and the fiber sheath 12 can also be formed by core and sheath zones of a fiber strand twisted into a yarn. Since according to FIG. 1 the needles 4 of the needle board 2 penetrate the yarns 6 perpendicular to the stitch base 1 , enveloping fibers are needled substantially perpendicular to the yarn axis through the yarn core 11 according to FIG. 4, as is illustrated by the indicated fiber bridges 13 . Said fiber bridges 13 connect the fiber sheath 12 with the yarn core 11 and additionally hold the twist of the yarn 6 , which causes the desired yarn strengthening.
- the needles 4 are made to penetrate under different needle-penetration angles the yarns 6 which are guided along the convex stitch base 1 , which leads to fiber bridges 13 which are inclined differently with respect to the longitudinal yarn axis, as is schematically indicated in FIG. 5 in a purely schematic way.
- the differently inclined fiber bridges 13 lead to a different interfelting between enveloping fibers and yarn core in comparison with FIG. 4, so that an influence on the yarn strengthening can be made through the arrangement of the curvature of the stitch base 1 .
- the fiber bridges 13 are usually not disposed in a common axial plane because a twist of the yarn during the passage through the guide grooves cannot be prevented due to the tensile load on the yarns 6 , so that needle penetrations are obtained which are distributed over the circumference of the yarn which is advantageous for an even strengthening of the yarns 6 .
Abstract
A method and an apparatus for strengthening a yarn (6) is described which is provided with fibers at least in a sheath zone enclosing a core zone. In order to provide advantageous process conditions it is proposed that fibers are needled from the sheath zone through the core zone along the yarn (6).
Description
- The invention relates to a method for strengthening a yarn which is provided with fibers at least in a sheath zone enclosing the core zone.
- The strength of fibers which are provided with a sheath zone made of fibers which enclose the core zone depends, among other things, on the anchoring of the enveloping fibers in the yarn core. If the yarn is obtained by a twisting of a fiber slubbing, the enveloping fibers are usually well incorporated in the fiber structure as a result of the twisting of the stubbing. If a yarn core is wrapped around with fibers, the connection between the enveloping fibers and the yarn core remains limited to the friction between the enveloping fibers and the surface of the yarn core, thus giving rise to the likelihood that in the case of a respective load, the fiber sheath may be displaced against the yarn core in the longitudinal direction of the yarn. This can lead to a dissolution of the yarn structure, especially whenever the enveloping fibers are provided with a relatively loose connection among one another. The yarn strength also suffers by stresses placed on the yarn which are accompanied by an untwisting of the twist of the yarn.
- The invention is thus based on the object of mechanically strengthening a yarn of the kind mentioned above with the help of a comparably simple method, so that not only higher strength requirements can be met, but also the likelihood of an untwisting of the twist of the yarn can be avoided.
- The invention achieves the above object in such a way that fibers are needled from the sheath zone through the core zone along the yarn.
- Since as a result of this measure the enveloping fibers are anchored additionally in the core zone of the yarn, the mutual connection between the enveloping fibers and the core zone of the yarn is strengthened considerably, which has a direct influence on the yarn strength since the needling of enveloping fibers through the core zone of the yarn produces a fixing of the twist of the yarn. This means that yarns with a predetermined degree of twisting are provided with better strength properties or that a lower twist of the yarn is required for a required yarn strength. This applies to yarns from twisted fiber slubbings, but especially to yarns with a fiber sheath wound about a yarn core, because in this case a mutual connection, which otherwise would not be possible, can be achieved between the enveloping fibers and the yarn core. An additional aspect is that the condensation of the fiber structure which is caused by the needling leads to a certain compensation of thick and thin places, which is disclosed by an even yarn quality.
- In order to perform the needling of yarns, it is possible to assume a conventional apparatus with a drivable needle board reciprocating in the direction of the needle penetration and a stitch base opposite of the needle board. It is merely necessary to ensure that the needles are disposed behind one another in the traveling direction of the yarn and the yarn cannot escape the penetrating needles to the side. For this reason the stitch base is provided with at least one guide groove for the yarn which extends in the direction of yarn passage, with the needles of the needle board penetrating into the guide groove. The side walls of the guide groove, which can be formed by a groove in the stitch base or guide rules provided on the stitch base, prevent a lateral migration of the yarn to be needled, so that the needles need merely be disposed in one row on the needle board in the direction of the guide groove in order to needle the yarn pulled through the guide groove in such a way that the enveloping fibers are pulled through the core zone of the yarn. The enveloping fibers extending through the core zone to the opposite sheath zone substantially prevent any relative movements between the sheath and core zones, so that a yarn needled in this manner is provided not only with favorable strength values, but is also advantageously protected against untwisting.
- Since the desired unity of the fiber structure between the sheath and the core zones of a yarn requires a comparably low stitching density, the passage speed of the yarns to be needled can be kept relatively high in the apparatuses provided for such purposes, which allows a favorable adaptation to the working speed of downstream yarn treatment. In order to enable the simultaneous needling of several yarns, the stitch base can be provided with several parallel guide grooves for one yarn each. The smooth entry and exit of the yarns into and out of the guide grooves can be enforced in a simple way by guide eyes for the yarns.
- In order to obtain a lateral guidance within the guide groove which is advantageous for the needling of a yarn, the clearance of the guide groove can decrease in the direction of needle penetration so that the yarn, depending on its respective thickness, rests on the two side walls of the guide groove when the yarn to be needled is pulled into the guide groove. For this purpose the stitch base can be provided with a convexly arched arrangement at least in the entrance and exit zones, so that in the case of a tensile stress on the yarn to be needled, a force component is obtained which presses the yarn against the stitch base in the guide groove. If the curvature extends over the entire length of the guide groove, this effect is also extended to the needling zone with the advantage that the needle-penetration angle of the needles into the yarn changes along the guide groove, which influences the strength properties accordingly. This effect of the curvature of the stitch base is naturally not dependent on any special arrangement of the cross section of the guide groove which in the case of low requirements placed on the lateral guidance of the yarn can also have a rectangular cross section.
- Although a convex stitch base causes a force component which is perpendicular to the stitch base in the case of a respective tensile load of the yarn which presses the yarn against the stitch base, the provision of a stripper between the stitch base and the needle board is recommended because in this way it is possible to achieve a substantially calmed yarn guidance with a simultaneously lower yarn tension.
- The method in accordance with the invention is now explained in closer detail by reference to the enclosed drawing, wherein:
- FIG. 1 shows an apparatus in accordance with the invention for strengthening a yarn in a simplified, partly sectional side view;
- FIG. 2 shows a sectional view along line II-II of FIG. 1 on an enlarged scale;
- FIG. 3 shows an embodiment of an apparatus in accordance with the invention in a representation corresponding to FIG. 1;
- FIG. 4 shows on an enlarged scale a schematic longitudinal sectional view through a yarn which is strengthened according to FIG. 1, and
- FIG. 5 shows a schematic longitudinal sectional view through a yarn strengthened according to FIG. 3.
- The apparatus according to FIG. 1 consists substantially of a
stitch base 1 and aneedle board 2 which is opposite ofstitch base 1 and is inserted in a conventional manner in aneedle beam 3. Theneedle beam 3 is driven reciprocatingly by way of an eccentric drive in the needle-penetration direction ofneedles 4. In contrast to conventional stitch bases, thestitch base 1 in accordance with the invention is associated withparallel guide grooves 5 for theyarns 6 to be needled which are held under tensile load between aroller feed 7 and a roller draw-off 8.Additional guide eyes 9 can be provided for the purpose of improved guidance of theyarns 6. - Although the
guide grooves 5 are arranged in the form of guide channels in thestitch base 1, this arrangement is in no way mandatory. Theguide grooves 5 could also be formed by guide rules on thestitch base 1, since the lateral guidance of theyarns 6 is concerned in particular. The channels of theguide grooves 5 are rounded off towards the groove base according to FIG. 2, which leads to an advantageous lateral guidance for theyarns 6, which are pulled into the guide grooves because thestitch base 1 is provided on the inlet and outlet side with a convex curvature in the direction of passage ofyarns 6, so that force components are obtained as a result of the tensile load ofyarns 6, which force components press against thestitch base 1. Said force components which occur in the curvature zone are not sufficient, however, in order to allow the omission of astripper 10 which is disposed between thestitch base 1 and theneedle board 2. - The embodiment according to FIG. 3 differs from the one according to FIG. 1 merely by the arrangement of the
stitch base 1 which is continuously curved in a convex manner from the inlet to the outlet side, so that force components which are perpendicular to thestitch base 1 are obtained over the entire guide length of theguide grooves 5, which force components press theyarns 6 against thestitch base 1. Astripper 10 is used nevertheless in order to ensure a calmed yarn guidance which is advantageous for the needling process. - The embodiments according to FIGS. 1 and 3 differ not only with respect to the forces acting upon the
yarns 6, but particularly by the type of needling as is illustrated by the FIGS. 4 and 5 which each show ayarn 6 with ayarn core 11 and afiber sheath 12 which can consist of enveloping fibers which are wound about thefiber core 11. - The
yarn core 11 and thefiber sheath 12 can also be formed by core and sheath zones of a fiber strand twisted into a yarn. Since according to FIG. 1 theneedles 4 of theneedle board 2 penetrate theyarns 6 perpendicular to thestitch base 1, enveloping fibers are needled substantially perpendicular to the yarn axis through theyarn core 11 according to FIG. 4, as is illustrated by the indicatedfiber bridges 13. Saidfiber bridges 13 connect thefiber sheath 12 with theyarn core 11 and additionally hold the twist of theyarn 6, which causes the desired yarn strengthening. - According to FIG. 3, the
needles 4 are made to penetrate under different needle-penetration angles theyarns 6 which are guided along theconvex stitch base 1, which leads tofiber bridges 13 which are inclined differently with respect to the longitudinal yarn axis, as is schematically indicated in FIG. 5 in a purely schematic way. The differentlyinclined fiber bridges 13 lead to a different interfelting between enveloping fibers and yarn core in comparison with FIG. 4, so that an influence on the yarn strengthening can be made through the arrangement of the curvature of thestitch base 1. - Although the
needles 4 penetrate theyarns 6 substantially in a common axial plane when theneedles 4 are not disposed in a mutually slightly offset way, thefiber bridges 13 are usually not disposed in a common axial plane because a twist of the yarn during the passage through the guide grooves cannot be prevented due to the tensile load on theyarns 6, so that needle penetrations are obtained which are distributed over the circumference of the yarn which is advantageous for an even strengthening of theyarns 6.
Claims (6)
1. A method for strengthening a yarn which is provided with fibers at least in a sheath region enclosing a core zone, with fibers from the sheath zone being needled through the core zone along the yarn.
2. A method according to claim 1 , wherein fibers from at least one fiber sheath wound about a yarn core are needled through the yarn core.
3. An apparatus for performing the method according to claim 1 or 2 with at least one needle board which is reciprocatingly drivable in the needle-penetration direction, with the stitch base (1) being provided with at least one guide groove (5) for the yarn (6) extending in the direction of passage and the needles (4) of the needle board (2) penetrating the guide groove (5).
4. An apparatus according to claim 3 , wherein the stitch base (1) comprises several parallel guide grooves (5) for one yarn (6) each.
5. An apparatus according to claim 3 or 4, wherein the guide groove (5) or the guide grooves (5) are provided upstream and/or downstream with guide eyes (9) for the yarn (6) or yarns (6).
6. An apparatus according to one of the claims 3 to 5 , wherein the stitch base (1) extends at least on the inlet and outlet side in a convexly curved manner in the direction of the guide groove (5) or guide grooves (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1651/2000 | 2000-09-29 | ||
AT0165100A AT410679B (en) | 2000-09-29 | 2000-09-29 | METHOD AND DEVICE FOR STRENGTHENING A YARN |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020038499A1 true US20020038499A1 (en) | 2002-04-04 |
Family
ID=3688555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/965,177 Abandoned US20020038499A1 (en) | 2000-09-29 | 2001-09-27 | Method and an apparatus for strengthening yarns |
Country Status (9)
Country | Link |
---|---|
US (1) | US20020038499A1 (en) |
JP (1) | JP2002146643A (en) |
AT (1) | AT410679B (en) |
CZ (1) | CZ20013474A3 (en) |
DE (1) | DE10138701A1 (en) |
FR (1) | FR2814760B1 (en) |
GB (1) | GB2367307B (en) |
IT (1) | ITGE20010072A1 (en) |
TW (1) | TW546430B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030194528A1 (en) * | 2002-04-10 | 2003-10-16 | Hideki Sakonjo | Unidirectional long fiber three dimensional fiber structure produced by short fiber intertwining and production method thereof |
US20040050116A1 (en) * | 2002-09-12 | 2004-03-18 | Minika Fehrer | Apparatus for needling at least one yarn |
US6796115B1 (en) * | 2001-12-19 | 2004-09-28 | Gilbert Patrick | Needle punched yarns |
CN102181968A (en) * | 2011-04-26 | 2011-09-14 | 东华大学 | Device for improving strength of ring spinning single thread by adopting porcupine roller mode |
CN102181970A (en) * | 2011-04-26 | 2011-09-14 | 东华大学 | Device for improving single thread strength by high-frequency needling method |
CN104088052A (en) * | 2014-07-17 | 2014-10-08 | 苏州华良化纤纺织有限公司 | Stretch yarn node generation device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT410680B (en) * | 2000-11-22 | 2003-06-25 | Fehrer Monika Mag | METHOD AND DEVICE FOR STRENGTHENING A TEXTILE MATERIAL |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3208125A (en) * | 1963-07-17 | 1965-09-28 | Bancroft & Sons Co J | Apparatus for making bulked yarn |
US3474611A (en) * | 1966-09-05 | 1969-10-28 | Mitsubishi Heavy Ind Ltd | Method of making fibrous yarns and apparatus therefor |
US3935046A (en) * | 1972-11-06 | 1976-01-27 | Imperial Chemical Industries Limited | Non-woven fabrics |
US4350731A (en) * | 1981-06-08 | 1982-09-21 | Albany International Corp. | Novel yarn and fabric formed therefrom |
US4555430A (en) * | 1984-08-16 | 1985-11-26 | Chicopee | Entangled nonwoven fabric made of two fibers having different lengths in which the shorter fiber is a conjugate fiber in which an exposed component thereof has a lower melting temperature than the longer fiber and method of making same |
US4674271A (en) * | 1986-06-16 | 1987-06-23 | Basf Corporation | Apparatus and process for converting a continuous multifilament yarn to a staple-like yarn |
US5081753A (en) * | 1990-05-31 | 1992-01-21 | Basf Corporation | Apparatus for producing staple-like yarn from continuous filament yarn |
US5287690A (en) * | 1991-11-22 | 1994-02-22 | Memtec America Corporation | Stainless steel yarn |
US5454142A (en) * | 1992-12-31 | 1995-10-03 | Hoechst Celanese Corporation | Nonwoven fabric having elastometric and foam-like compressibility and resilience and process therefor |
US6311375B1 (en) * | 2000-07-27 | 2001-11-06 | Gilbert Patrick | Method of needle punching yarns |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3340586A (en) * | 1965-08-30 | 1967-09-12 | Singer Co | Methods and apparatus for needling textile fibers |
US3783479A (en) * | 1970-08-27 | 1974-01-08 | Southern Mills Inc | Method of preparing a nonwoven fabric |
US4170868A (en) * | 1976-12-30 | 1979-10-16 | Wwg Industries, Inc. | Yarn forming apparatus with mechanical node locking |
US4595438A (en) * | 1984-11-05 | 1986-06-17 | Armstrong World Industries, Inc. | Process for making a yarn covered fabric |
DE19755449A1 (en) * | 1996-12-23 | 1998-06-25 | Fehrer Ernst | Method and device for needling a nonwoven web |
-
2000
- 2000-09-29 AT AT0165100A patent/AT410679B/en not_active IP Right Cessation
-
2001
- 2001-08-07 DE DE2001138701 patent/DE10138701A1/en not_active Withdrawn
- 2001-08-10 JP JP2001277242A patent/JP2002146643A/en active Pending
- 2001-08-24 TW TW90120937A patent/TW546430B/en not_active IP Right Cessation
- 2001-08-24 GB GB0120694A patent/GB2367307B/en not_active Expired - Fee Related
- 2001-09-19 IT IT2001GE000072A patent/ITGE20010072A1/en unknown
- 2001-09-26 CZ CZ20013474A patent/CZ20013474A3/en unknown
- 2001-09-27 US US09/965,177 patent/US20020038499A1/en not_active Abandoned
- 2001-09-27 FR FR0112444A patent/FR2814760B1/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3208125A (en) * | 1963-07-17 | 1965-09-28 | Bancroft & Sons Co J | Apparatus for making bulked yarn |
US3474611A (en) * | 1966-09-05 | 1969-10-28 | Mitsubishi Heavy Ind Ltd | Method of making fibrous yarns and apparatus therefor |
US3935046A (en) * | 1972-11-06 | 1976-01-27 | Imperial Chemical Industries Limited | Non-woven fabrics |
US4350731A (en) * | 1981-06-08 | 1982-09-21 | Albany International Corp. | Novel yarn and fabric formed therefrom |
US4555430A (en) * | 1984-08-16 | 1985-11-26 | Chicopee | Entangled nonwoven fabric made of two fibers having different lengths in which the shorter fiber is a conjugate fiber in which an exposed component thereof has a lower melting temperature than the longer fiber and method of making same |
US4674271A (en) * | 1986-06-16 | 1987-06-23 | Basf Corporation | Apparatus and process for converting a continuous multifilament yarn to a staple-like yarn |
US5081753A (en) * | 1990-05-31 | 1992-01-21 | Basf Corporation | Apparatus for producing staple-like yarn from continuous filament yarn |
US5287690A (en) * | 1991-11-22 | 1994-02-22 | Memtec America Corporation | Stainless steel yarn |
US5454142A (en) * | 1992-12-31 | 1995-10-03 | Hoechst Celanese Corporation | Nonwoven fabric having elastometric and foam-like compressibility and resilience and process therefor |
US6311375B1 (en) * | 2000-07-27 | 2001-11-06 | Gilbert Patrick | Method of needle punching yarns |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6796115B1 (en) * | 2001-12-19 | 2004-09-28 | Gilbert Patrick | Needle punched yarns |
US20030194528A1 (en) * | 2002-04-10 | 2003-10-16 | Hideki Sakonjo | Unidirectional long fiber three dimensional fiber structure produced by short fiber intertwining and production method thereof |
US7114319B2 (en) * | 2002-04-10 | 2006-10-03 | Shikibo Ltd. | Unidirectional long fiber three dimensional fiber structure produced by short fiber intertwining and production method thereof |
US20040050116A1 (en) * | 2002-09-12 | 2004-03-18 | Minika Fehrer | Apparatus for needling at least one yarn |
US6779236B2 (en) * | 2002-09-12 | 2004-08-24 | Monika Fehrer | Apparatus for needling at least one yarn |
CN102181968A (en) * | 2011-04-26 | 2011-09-14 | 东华大学 | Device for improving strength of ring spinning single thread by adopting porcupine roller mode |
CN102181970A (en) * | 2011-04-26 | 2011-09-14 | 东华大学 | Device for improving single thread strength by high-frequency needling method |
CN104088052A (en) * | 2014-07-17 | 2014-10-08 | 苏州华良化纤纺织有限公司 | Stretch yarn node generation device |
Also Published As
Publication number | Publication date |
---|---|
FR2814760B1 (en) | 2004-07-23 |
JP2002146643A (en) | 2002-05-22 |
ATA16512000A (en) | 2002-11-15 |
GB2367307A (en) | 2002-04-03 |
DE10138701A1 (en) | 2002-04-11 |
AT410679B (en) | 2003-06-25 |
ITGE20010072A0 (en) | 2001-09-19 |
GB0120694D0 (en) | 2001-10-17 |
GB2367307B (en) | 2004-03-24 |
ITGE20010072A1 (en) | 2003-03-19 |
CZ20013474A3 (en) | 2002-05-15 |
TW546430B (en) | 2003-08-11 |
FR2814760A1 (en) | 2002-04-05 |
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