WO2000068476A1 - Cable de filaments et son procede de fabrication - Google Patents

Cable de filaments et son procede de fabrication Download PDF

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Publication number
WO2000068476A1
WO2000068476A1 PCT/US2000/012554 US0012554W WO0068476A1 WO 2000068476 A1 WO2000068476 A1 WO 2000068476A1 US 0012554 W US0012554 W US 0012554W WO 0068476 A1 WO0068476 A1 WO 0068476A1
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WO
WIPO (PCT)
Prior art keywords
tow
tow band
band
fibers
filaments
Prior art date
Application number
PCT/US2000/012554
Other languages
English (en)
Inventor
John Seungun Ahn
Darren Scott Quinn
Original Assignee
E.I. Du Pont De Nemours And Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by E.I. Du Pont De Nemours And Company filed Critical E.I. Du Pont De Nemours And Company
Priority to KR1020017014284A priority Critical patent/KR20010112483A/ko
Priority to AU47082/00A priority patent/AU4708200A/en
Priority to JP2000617242A priority patent/JP2002544398A/ja
Priority to EP00928918A priority patent/EP1183410B1/fr
Priority to DE60029441T priority patent/DE60029441T2/de
Publication of WO2000068476A1 publication Critical patent/WO2000068476A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/18—Separating or spreading
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A47G9/0207—Blankets; Duvets
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles

Definitions

  • the present invention relates to a tow and battings and articles produced therewith, and processes for making such tow, batting or article.
  • three-dimensionally crimped staple fibers and articles produced from them are known to offer distinct advantages such as higher loft, softness, improved crimp recovery, shelf appeal, and better compactibility .
  • processing of these three- dimensionally crimped staple fibers is often difficult due to the softness and silkiness attributed in part from the crimp structure. Battings made from such fibers likewise have deficiencies in that they are often weak and easily destroyed.
  • a three- dimensionally crimped spreadable continuous filament tow band is comprised of bicomponent fibers containing two polymers in each fiber. Battings and articles comprised of the three-dimensionally crimped spreadable continuous filament tow band are a further aspect of the invention.
  • a process for making a three- dimensionally crimped spreadable continuous tow comprising extruding at least two component polymers through a capillary; spinning the extruded polymers into filaments to form hollow fibers; quenching the hollow fibers; grouping the quenched fibers together to form at least two separate ropes; drawing the separate ropes simultaneously to form flat ribbons; stacking the flat ribbons on top of each other to form a single tow band; and removing tension from the band at which point helical or spiral crimps form.
  • a process for making a three-dimensionally crimped spreadable continuous tow band comprises producing polymeric fibers; grouping the fibers together to form a plurality of separate ropes; drawing the separate ropes simultaneously to form flat ribbons under tension; stacking the flat ribbons on top of each other to form a single tow band; compressing the bands; and removing the tension from the band at which point helical or spiral crimp is allowed to form.
  • a process of making a batting comprises uniformly spreading the three- dimensionally crimped spreadable continuous tow band.
  • Fig. 1 is a schematic representation showing a bicomponent tow spin and draw process according to the present invention.
  • Fig. 2 is a schematic representation showing a tow spreading process according to the present invention.
  • the present invention overcomes the problems associated with the prior art by producing a three- dimensionally crimped tow using a low cohesion tow production process, and a band stacking procedure, which imparts a low cohesion between individual constituent bands thus enabling the combined tow band to be processed through spreading as an integral unit .
  • a tow thus produced can be separated into its component bands through the thickness of the stack.
  • the tow can still be processed through the spreading apparatus as if it were one single tow line. Each tow band is thus allowed to spread across the width of the spreader uniformly.
  • crimp refers to the waviness or bulk of the fiber.
  • a "three dimensional crimp” thus refers to the bulk or waviness of a fiber in three dimensions, as compared to, for example, a two-dimensional zigzag crimp from mechanical crimping.
  • Three dimensional crimp has been described in the art using various terms including, for example, spiral or helical crimp, omega crimp, three-dimensional random crimp, etc.
  • Three dimensionally crimped fibers are also described to a great extent in the art related to fiber clusters and bulk continuous filament technologies. Methods of obtaining a three-dimensional crimp have also been described. For example, U.S. Patent No.
  • Exemplary polymers for the tow band of the present invention include, but are not limited to, homopoly ers, copolymers, and terpolymers of monomers formed into any type of melt spinnable polymers.
  • Such melt spinnable polymers include polyesters, such as polyethylene terephthalate (PET) , polybutyene terephthalate (PBT or 4GT) , polytrimethylene terephthalate (PTT or 3GT) , polypropylene terephthalate, and polyethylene naphthalate (PEN) ; and polyolefins, such as polypropylene and polyethylene
  • PE polyethylene glycol
  • terpolymers polystyrene resin
  • Methods of making the homopolymers, copolymers and terpolymers used in the present invention are known in the art and may include the use of catalysts, co-catalysts, and/or chain-branchers to form the copolymers and terpolymers, as known in the art .
  • the polymers and resultant fibers used in the present invention can comprise conventional additives, which are added during the polymerization process or to the formed polymer, and may contribute towards improving the polymer or fiber properties.
  • additives include antistatics, antioxidants, antimicrobials, flameproofing agents, dyestuffs, light stabilizers, polymerization catalysts and auxiliaries, adhesion promoters, delustrants, such as titanium dioxide, matting agents, organic phosphates, and combinations thereof.
  • Other additives that may be applied on fibers, for example, during spinning and/or drawing processes include antistatics, slickening agents, adhesion promoters, antioxidants, antimicrobials, flameproofing agents, lubricants, and combinations thereof.
  • additional additives may be added during various steps of the process as is known in the art.
  • a slickening agent provides a silky, downlike tactile aesthetic to the fiber or batting and allows the fibers in the final finished article to move past one another during use without matting.
  • Any suitable slickening agent may be used, such as various silicone oils, preferably polyaminosiloxanes .
  • Antistatic and lubricating agents applied to the fiber are also of particular importance due to the assistance they afford during fiber processing. The antistatic agents can be used to prevent generation of static on the tow spreader, and can be applied to the fibers before or after being drawn.
  • the fibers used in the present invention may further have any suitable cross-sectional shape.
  • the cross-sectional shapes may include round, oval, trilobal, shapes with higher numbers of symmetric or asymmetric lobes, dog-boned shape, and hollow fibers having a plurality of holes or voids, preferably about 1 to about 10 holes, as is known in the art.
  • the fibers have a trivoid round cross-section.
  • the fibers in the tow band comprise a first polymer made up of polyethylene terephthalate homopolymer and a second polymer made up of a copolymer of polyethylene terephthalate and approximately 7,000 ppm by weight of trihydroxyethyl trimellitate.
  • the fibers in the tow band can comprise bicomponent fibers of a first component selected poly (ethylene terephthalate) and copolymers thereof and a second component selected from poly (trimethylene terephthalate) and copolymers thereof, the two components being present in a weight ratio of about 95:5 to about 5:95, preferably about 70:30 to about 30:70.
  • the cross-section of the bicomponent fibers can be side-by-side or eccentric sheath/core.
  • the comonomer can be selected from linear, cyclic, and branched aliphatic dicarboxylic acids having 4-12 carbon atoms (for example, butanedioic acid, pentanedioic acid, hexanedioic acid, dodecanedioic acid, and 1 , 4-cyclo-hexanedicarboxylic acid) ; aromatic dicarboxylic acids other than terephthalic acid and having 8-12 carbon atoms (for example, isophthalic acid and 2,6- naphthalenedicarboxylic acid) ; linear, cyclic, and branched aliphatic diols having 3-8 carbon atoms (for example, 1,3 -propane diol, 1, 2-propane
  • Isophthalic acid, pentanedioic acid, hexanedioic acid, 1,3 -propane diol, and 1 , 4-butanediol are preferred because they are readily commercially available and inexpensive.
  • Isophthalic acid is more preferred because copolyesters derived from it discolor less than copolyesters made with some other comonomers .
  • the comonomer is preferably isophthalic acid.
  • 5- sodium-sulfoisophthalate can be used in minor amounts as a dyesite comonomer in either polyester component.
  • the tow band of the present invention may be used to make a batting.
  • a "batting,” as used herein, refers to a continuous filament tow band that has been spread to approximately 4 or more times its initial width on a tow spreader and has been cross-lapped to form a plurality of layers. Preferably, the batting has one to five layers of the continuous filament tow band. The batting is then used as fiberfill for articles such as pillows, sleeping bags, cushions, quilts, and insulating garments or articles.
  • the method of making the three-dimensionally crimped continuous filament spread tow of the present invention comprises first producing fibers with the capability of forming a three-dimensional crimp structure.
  • This can be conducted by any known means, including, but not limited to, asymmetrical quenching, bulk continuous filament (BCF) processing, conjugate spinning of two polymers differing only in molecular chain length, and bicomponent spinning of two different polymers or copolymers.
  • the filaments are spun having the capability of forming a three- dimensional crimp, and subsequently drawn to achieve molecular orientation, which forms the crimp or causes the crimps to form.
  • One example of making a fiber having a three- dimensional crimp structure includes the process of extruding two component polymers through a capillary, spinning the extruded polymers into a filament to form a fiber with two distinct levels of spun orientation and drawing the fiber and releasing the tension such that the three-dimensional crimp forms.
  • a second method of making a three-dimensionally crimped fiber involves spinning a polymer through a capillary and immediately contacting the polymer stream with a cooling fluid to form a filament such that the filament thus formed will have a spun orientation gradient across its diameter due to the differential rates of cooling throughout the fiber. This "asymmetric quenching," as it is called, may be conducted by known methods.
  • asymmetrical quenching may involve directing a jet of air against one capillary.
  • the filaments may be contacted with a continuously renewed film of water on one side to produce the desired three-dimensional crimp.
  • the filament is drawn and tension is released such that three- dimensional crimps form.
  • the methods for preparing three- dimensional crimp may be effected in other manners known in the art.
  • combinations of two or more of the aforementioned technologies may be employed. For example, using fibers with different cross-sections may attribute to the inclusion of one or more voids or to having a non-round periphery. This may then provide or accentuate the three-dimensional crimp structure of the fibers as well as providing other useful properties.
  • the fibers having the capability of forming a three-dimensional crimp structure are grouped to form a plurality of separate ropes .
  • Any number of separate ropes may be made of the fibers having the three-dimensional crimp.
  • the "low cohesion" tow production process involves drawing under heat the separate ropes simultaneously to form flat ribbons, cooling the ribbons to prevent further drawing, continuously stacking the individual ribbons one atop the others, and compressing the band.
  • the band may be compressed in any suitable apparatus for compression. Preferably, the band is compressed through the nip of a pair of co-rotating rolls. This stacking provides a slight ribbon to ribbon cohesion without forcing the ribbons to be inextricably linked to each other. This stacking may be performed in any desired manner, and preferably, the width of the completed stack is essentially equivalent to the width of each of the previously independent bands.
  • the compression also removes excess water from the band.
  • a slickening agent may be topically applied subsequent to and/or prior to the compression step.
  • the three-dimensional crimp is formed or accentuated.
  • the three-dimensional crimp may form spontaneously for bicomponent filaments and asymmetrically-crimped filaments once the tension is reduced or removed from the tow band.
  • the three-dimensional crimp may be formed earlier in the tow production process, for example, for BCF fibers, and the reduction or removal of tension results in accentuating the already formed 3-D crimp.
  • the filaments may be treated to set the crimp.
  • the filaments are typically heated in a continuous oven to relieve shrinkage tension, heat set the crimp and, if applicable, to complete the curing reaction of the slickening agent.
  • the bands are then cooled to below the glass transition temperature of the polymer such that the crimp is made permanent and packed into a shipping/storage container for transport to the tow spreading process.
  • Other methods of permanently setting the crimp are known in the art and can be used.
  • a "low cohesion tow production process” is, thus, one which provides tow band integrity adequate to allow packaging and introduction to a tow spreader as a subsequent processing step, but which allows the tow band to be easily deregistered into individual filaments on the tow spreader.
  • "Deregistering,” as used herein, refers to the opening of a tow of continuous crimped filaments such that the crimp structure in each filament is out of synchronization with that of adjacent filaments.
  • the deregistration will be followed by a spreading step in which the width of the tow band will be increased from 4 to 10 times that of the entering tow band as the band spreads substantially uniformly across the width of the spreader and along the length of the band as it passes through the spreading apparatus .
  • the filaments or fibers may be treated with any of a number of finishing agents as set forth above.
  • the filaments are coated with a slickening agent on the draw machine to make filaments soft and slick.
  • the slickening agent is a silicone oil.
  • the filaments are treated with an antistatic finish on the draw machine to eliminate static generation on the tow spreader.
  • the slickening agent is preferably applied after drawing, but prior to heat setting.
  • the heat setting can then cure the slickening agent and bond it to the fiber.
  • an antistatic agent can be applied.
  • Fig. 1 two separate polymers are simultaneously spun through each spinneret capillary in a manner well-known in the art for making bicomponent fibers by first passing the polymers through a device, 1, designed to distribute each polymer to the entrance of each capillary on spinneret, 2.
  • Polymers are then extruded through the spinneret, quenched with a suitable medium, typically conditioned air, and drawn around one or more godets, 3 & 4. Fibers thus produced from one or more spinnerets are then collected into a suitable collection container, 5, and transported to the separate drawing step.
  • a suitable medium typically conditioned air
  • multiple spun ropes from separate containers are combined and separated as necessary to form a plurality of at least two separate ropes, preferably, two to twenty, most preferably, two to ten separate ropes. In the most preferred embodiment, four or more separate ropes are made. These ropes are then drawn separately and simultaneously between a first roll set, 10, and a second roll set, 11, which is operating at a surface speed from 2.5 to 5 times, preferably 3.0 to 3.5 times that of the first set.
  • the draw temperature is controlled by either the use of heated rolls or, as set forth in Fig. 1, by the use of liquid sprays, 12, of which the first series of sprays are operated at a controlled temperature of about 90°C to about 99°C
  • the separate bands are pulled by a pair of opposing rolls, 14, through a unit for stacking the bands, which in Fig. 1 is depicted as angled bars, 13.
  • This stacking may "be performed in any desired manner, and preferably is done so in order to have the width of the completed stack be essentially equivalent to the width of each of the previously independent bands .
  • the stacked bands are then deposited under low tension onto a belt, 15, which passes the fiber through an oven, 16.
  • the oven serves to remove shrinkage from the fiber and to cure any siliconized finish, which can be applied to the fiber by any of several known means prior to deposition on the oven belt.
  • the oven temperature is about 100°C to about 200°C (212°F to about 392°F) , preferably about 140°C to about 180°C (284°F to 356°F) .
  • Dwell time within the heated zones of the oven typically ranges from 5 to 20 minutes, preferably 7 to 15 minutes.
  • the fiber then passes through a cooling zone operating at ambient temperature for 1 to 5 minutes, preferably 1 to 3 minutes. Following the oven, the fiber is deposited into a suitable storage/shipping container 17 for transport to the tow spreader.
  • Fig. 2 describes one example of the tow spreading process within the scope of the present invention.
  • the tow band, 18, comprised of helically crimped fibers is extracted from the storage/transport container, 19, and pulled through an antifold guide, 20, which serves to remove twists and folds from the band.
  • the tow of Fig. 2 is then pulled through a series of guides, 21, 22, & 23, before passing into the nip created by a driven pair of opposing cylindrical rolls, 24 & 25.
  • the first of these rolls 24 is metallic and has a helically grooved surface.
  • the second roll is of a composition of rubber-like material and has a smooth surface. From this roll pair, the tow band passes into the nip created by a second pair of opposing rolls, 26 & 27, which are constructed essentially identical to rolls 24 & 25, respectively, and which are driven at a speed higher than that of the first pair.
  • the speed differential coupled with the grooved roll surfaces causes a differential drafting and gripping of the filaments and serves to deregister the tow.
  • the deregistered tow then passes through the nip created by a driven pair of opposing smooth rolls, 28 & 29, which serve to isolate the high tension deregistration process from the low tension spreading process which follows.
  • the tow may pass through a spreading section.
  • the spreading section may contain an air spreading jet, 30, similar to that described by Watson in U.S. Patent No. 3,423,795, and an opposing set of driven metallic rolls, 31 & 32. Air passing through the spreading jet forces the filaments within the tow band to migrate outward from the centerline.
  • the tow passes through a 2 nd spreading section comprised air spreading jet, 33 and tension isolation rolls 34 and 35.
  • Spreading section 2 is essentially identical to section 1 with the exception that the air spreading jet and tension isolation rolls are all longer. This increased length allows the tow band to spread wider as it progresses through the machine.
  • the tow passes through a 3 rd spreading section containing air spreading jet 36 and tension isolation rolls 37 and 38. While essentially similar to the previous spreader section, this section is wider still thus allowing the tow to spread further.
  • the tow passing from the 3 rd spreader section passes into a 4 th spreader section shown by air spreader box 39 and rolls 40 and 41, which while similar to the previous parts are again wider than the previous section.
  • the tow may pass down through a nip created by a pair of cross lapper rolls, 42 & 43 , which simultaneously pull the spread tow from roll 41 while oscillating perpendicularly above a moving belt, 44, thus forming a layered batting of continuous filaments, 45.
  • the cross-lapped batting may further be drafted by passing through one or more sets of drafting rolls to further reduce and better control the weight per unit area.
  • the batting thus formed may at this point be collected onto rolls, subjected to a resin bonding application rolled into pillows or any of the other processing steps common to fibrous batting manufacturer .
  • the three-dimensionally crimped spreadable continuous filament tow of the present invention is useful to make battings that exhibit good loft .
  • the loft created by the three-dimensional crimp from the bicomponent tow of the present invention is superior to the loft of known two-dimensional mechanically crimped tows.
  • the three-dimensionally crimped tow also exhibits other desirable attributes such as better compressibility, softness, increased filling power, strength, and increased warmth.
  • defects in spreading typical bicomponent tows include open sections caused when a filament from one portion of the band adheres to an adjacent filament as the band is spread, which creates a hole in the web next to the adhered filaments.
  • the three-dimensionally crimped spreadable tow of the present invention overcomes these difficulties by stacking the multiple small bands, which reduces fiber cohesion across the band, while the stacking provides cover such that a defect in any one band is masked by the other bands. Moreover, by drawing the tow from a plurality of separate ropes and then stacking the bands, there is enough cohesion transversely across the band to obtain uniform spreading. Accordingly, the three-dimensionally crimped spreadable tows of the present invention are capable of being uniformly spread to produce battings with high loft, better compressibility, softness, increased filling power, strength, and warmth. Moreover, this arrangement serves to minimize foldovers, splits, and cross-over filaments, which hinder good spreading.
  • Bicomponent fibers according to the invention were produced from two different component polymers, both of 0.66 inherent viscosity (IV), arranged in a side-by- side manner longitudinally along the entire length of each fiber.
  • One component polymer (A) was polyethylene terephthalate homopolymer while the second component polymer (B) was a copolymer of polyethylene terephthalate containing 3500 ppm by weight of trimellitate chain brancher (analyzed as trimethyl trimellitate but added as trihydroxyethyl trimellitate) .
  • trimellitate chain brancher analyzed as trimethyl trimellitate but added as trihydroxyethyl trimellitate
  • Each polymer was processed separately and simultaneously through its respective single screw extruder at a combined polymer throughput of 210 lbs./hr. (95.5 kg/hr.) and metered to the orifice entrance of each of 1176 spinneret holes at which point the two polymers were allowed to come into contact with one another in a ratio of 86.5 % (A)
  • the polymers were extruded through each post- coalescent capillary and spun into filaments at a rate of 0.1786 lb. /hr. /capillary (0.081 kg/hr . /capillary) and 770 ypm (704 mpm) .
  • the resultant hollow fibers were quenched in a cross flow manner with air at 55°F
  • the filaments were then coated with a polyaminosiloxane slickening agent after which the low cohesion tow band was deposited onto a conveyor belt, which carried the fiber into an oven operating at 175 °C .
  • the fiber was subsequently cooled to below its 55 °C and coated with an antistatic finish at 0.33% (on weight of fiber) .
  • the tow band having a nominal relaxed tow denier of 270,000 denier (305,556 dtex) was then deposited into a container suitable for transporting the fiber for further processing.
  • the tow was extracted from the storage/transport container, pulled through an antifold guide and pretension bar system designed to prevent twists, and or folds from entering the tow spreader. From the guides, the band entered a nip created by a pair of opposing cylindrical rolls, such as described by Dunlap in US Patent No. 3,156,016, herein incorporated by reference. The first of these rolls was metallic and possessed a helically grooved surface while the other roll had a smooth surface and had a rubber covering. The tow band was then drafted between the first roll pair at a surface speed of 36.75 meters/min. and a 2 nd roll pair identical to the first, but rotating at a surface speed of 58.34 meters/min. or 1.59 times that of the first pair. The combined effect of the drafting and the differential gripping of the filaments caused by the grooved surfaces was a longitudinal deregistration of the filaments comprising the tow band.
  • the deregistered tow was passed through a nip created by the contact of two opposing smooth rolls which served to isolate the tension of the deregistration rolls from the remainder of the process.
  • the tow was then passed under low tension through three subsequent spreading stations consisting of an air spreader and puller roll, such as described by Watson in U.S. Patent No. 3,423,795, herein incorporated by reference, configured in a manner such that the tow was spread wider in each stage with the final stage being approximately 70 inches (178 cm) in width.
  • the surface speed of the puller rolls was decreased in each stage to the minimum required to prevent fiber wraps on the rolls.
  • the surface speed of the final puller roll stage was 34.25 meters/min (37.46 yd. /min.) .
  • the spread tow was then plaited onto an apron running perpendicular to the direction of the tow in a manner such that 2 to 4 cross lapped layers were continuously created thus forming a lofty continuous filament batting.
  • Example 2 The resinated batting was then collected into a roll for further processing into filled articles such as sleeping bags .
  • Example 2
  • Bicomponent fibers according to the invention were produced in a manner according to example 1 with the exception that the total throughput per position was reduced to 186 lb./hr. (84.4 Kg/hr.), which yielded a per capillary throughput of 0.1582 lb. /hr. /capillary
  • the polymer ratio was changed to 88% polymer A and 12 % polymer B.
  • the spin speed was increased to 950 yd. /min. (868.7 m/min.) .
  • the fibers thus formed were grouped together to form 4 separate ropes of 77,500 denier
  • the drawn ropes were then stacked to form a single ribbon with a width equivalent to that of the individual ribbons and a thickness 4 times that of the initial ribbons.
  • the tow was extracted from the storage/transport container and deregistered/spread/crosslapped according to the process described in Ex. 1 to form a lofty continuous filament batting.
  • Bicomponent fibers according to the present invention were produced in a manner according to Example 2.
  • the drawn ropes thus formed were deregistered according to the process described in Example 2 with the exception that the deregistered and spread tow was immediately rolled up and inserted into a pillow tick.
  • the pillow thus produced was soft and lofty.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Multicomponent Fibers (AREA)

Abstract

L'invention concerne une bande de câble de filaments tridimensionnelle continue et ondulée à étaler, fabriquée par extrusion de polymères à travers un capillaire, filage des polymères extrudés en filaments pour former des fibres, trempage rapide des fibres, groupage des fibres trempées de façon à former au moins deux cordes séparées, tirage simultané des cordes séparées de façon à former des rubans plats, empilage desdits rubans les uns sur les autres de façon à former une bande de câble uniforme simple, et évacuation de la tension de la bande. La ouate produite par désolidarisation et étalement uniformes de la bande de câble est, par exemple, utile pour fabriquer des articles fourrés tels que sacs de couchage, duvets et oreillers.
PCT/US2000/012554 1999-05-10 2000-05-09 Cable de filaments et son procede de fabrication WO2000068476A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020017014284A KR20010112483A (ko) 1999-05-10 2000-05-09 토우 및 그의 제조 방법
AU47082/00A AU4708200A (en) 1999-05-10 2000-05-09 Tow and process of making
JP2000617242A JP2002544398A (ja) 1999-05-10 2000-05-09 トウおよびその製造方法
EP00928918A EP1183410B1 (fr) 1999-05-10 2000-05-09 Cable de filaments et son procede de fabrication
DE60029441T DE60029441T2 (de) 1999-05-10 2000-05-09 Fadenbündel und verfahren zur dessen herstellung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13339499P 1999-05-10 1999-05-10
US60/133,394 1999-05-10

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WO2000068476A1 true WO2000068476A1 (fr) 2000-11-16

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PCT/US2000/012554 WO2000068476A1 (fr) 1999-05-10 2000-05-09 Cable de filaments et son procede de fabrication

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EP (1) EP1183410B1 (fr)
JP (1) JP2002544398A (fr)
KR (1) KR20010112483A (fr)
CN (1) CN1349571A (fr)
AU (1) AU4708200A (fr)
DE (1) DE60029441T2 (fr)
WO (1) WO2000068476A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020081956A (ko) * 2001-04-21 2002-10-30 도영수 고성능 무정형 토우와 그 제조방법
EP2049715A1 (fr) * 2006-08-11 2009-04-22 Es Fibervisions Co., Ltd. Faisceau de fibres et toile
US8967155B2 (en) 2011-11-03 2015-03-03 Celanese Acetate Llc Products of high denier per filament and low total denier tow bands

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4469260B2 (ja) * 2004-11-22 2010-05-26 三菱レイヨン株式会社 トウバンドの製造方法
CN101805950B (zh) * 2010-04-19 2011-10-12 常州市宏发纵横新材料科技股份有限公司 碳纤维展纤装置
CN102178419A (zh) * 2011-04-26 2011-09-14 沈展望 融合棉被及其生产方法
CN105109964B (zh) * 2015-09-10 2020-08-28 宁波大发化纤有限公司 一种卷曲机与烘箱之间的丝束输送装置
CN108706398A (zh) * 2018-05-16 2018-10-26 浙江金昊特种纤维有限公司 一种落丝装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332762A (en) * 1976-04-29 1982-06-01 E. I. Du Pont De Nemours And Company Process for preparing a spreadable acrylic fiber tow
US5458968A (en) * 1994-01-26 1995-10-17 Monsanto Company Fiber bundles including reversible crimp filaments having improved dyeability
US5532060A (en) * 1986-01-30 1996-07-02 E. I. Du Pont De Nemours And Company Continuous hollow filaments, yarns, and tows
US5683811A (en) * 1994-09-30 1997-11-04 E. I. Du Pont De Nemours And Company Pillows and other filled articles and in their filling materials
EP0811710A1 (fr) * 1995-12-25 1997-12-10 Teijin Limited Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module
US5723215A (en) * 1994-09-30 1998-03-03 E. I. Du Pont De Nemours And Company Bicomponent polyester fibers
WO1998014646A1 (fr) * 1996-10-04 1998-04-09 E.I. Du Pont De Nemours And Company Fibre polyester

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332762A (en) * 1976-04-29 1982-06-01 E. I. Du Pont De Nemours And Company Process for preparing a spreadable acrylic fiber tow
US5532060A (en) * 1986-01-30 1996-07-02 E. I. Du Pont De Nemours And Company Continuous hollow filaments, yarns, and tows
US5458968A (en) * 1994-01-26 1995-10-17 Monsanto Company Fiber bundles including reversible crimp filaments having improved dyeability
US5683811A (en) * 1994-09-30 1997-11-04 E. I. Du Pont De Nemours And Company Pillows and other filled articles and in their filling materials
US5723215A (en) * 1994-09-30 1998-03-03 E. I. Du Pont De Nemours And Company Bicomponent polyester fibers
EP0811710A1 (fr) * 1995-12-25 1997-12-10 Teijin Limited Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module
WO1998014646A1 (fr) * 1996-10-04 1998-04-09 E.I. Du Pont De Nemours And Company Fibre polyester

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020081956A (ko) * 2001-04-21 2002-10-30 도영수 고성능 무정형 토우와 그 제조방법
EP2049715A1 (fr) * 2006-08-11 2009-04-22 Es Fibervisions Co., Ltd. Faisceau de fibres et toile
EP2049715A4 (fr) * 2006-08-11 2010-06-02 Es Fibervisions Co Ltd Faisceau de fibres et toile
US9410273B2 (en) 2006-08-11 2016-08-09 Es Fibervisions Co. Fiber bundle and web
US8967155B2 (en) 2011-11-03 2015-03-03 Celanese Acetate Llc Products of high denier per filament and low total denier tow bands

Also Published As

Publication number Publication date
AU4708200A (en) 2000-11-21
DE60029441T2 (de) 2007-02-15
KR20010112483A (ko) 2001-12-20
EP1183410A1 (fr) 2002-03-06
DE60029441D1 (de) 2006-08-31
JP2002544398A (ja) 2002-12-24
CN1349571A (zh) 2002-05-15
EP1183410B1 (fr) 2006-07-19

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