WO2005085505A1 - Method of producing yarns and fabrics - Google Patents

Method of producing yarns and fabrics Download PDF

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Publication number
WO2005085505A1
WO2005085505A1 PCT/US2005/006148 US2005006148W WO2005085505A1 WO 2005085505 A1 WO2005085505 A1 WO 2005085505A1 US 2005006148 W US2005006148 W US 2005006148W WO 2005085505 A1 WO2005085505 A1 WO 2005085505A1
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WO
WIPO (PCT)
Prior art keywords
yam
fusion
yarn
low melt
yams
Prior art date
Application number
PCT/US2005/006148
Other languages
French (fr)
Inventor
Gilberto Lardizabal
Filemón PELAEZ
Hermilo PÉREZ
Francisco Sanchez
Miguel HERNÁNDEZ
Gerardo Chavez
Rafael Talavera
Armando PÉREZ
Alejandro Garcia
Angel Mejia
Antonio Torres
Johnny Hughes
Original Assignee
Pliana Holdings, S.A. De C.V.
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 Pliana Holdings, S.A. De C.V. filed Critical Pliana Holdings, S.A. De C.V.
Publication of WO2005085505A1 publication Critical patent/WO2005085505A1/en

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Classifications

    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/402Yarns in which fibres are united by adhesives; Impregnated yarns or threads the adhesive being one component of the yarn, i.e. thermoplastic yarn
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core

Definitions

  • the present invention is directed towards the production of yarn and fabrics. Specifically, the invention relates to the production of yarn and fabrics with improved abrasion resistance, seam slippage and dimensional stability without the use of traditional backing coating.
  • the present invention concerns yarns and fabrics that have significantly improved abrasion resistanpe, seam slippage and dimensional stability and methods for their production.
  • It is known see U.S. Patent No. 2,252,999 to Wallach, issued Aug. 19, 1941 and U.S. Patent No. 3,877,214 to Van der Werf, issued Apr. 15, 1975) to blend non- adhesive fibers with potentially adhesive fibers to form a yarn or other textile structure, then to activate the potentially adhesive fibers to bond them to contacting fibers, thus modifying end-use properties of the yarn.
  • U.S. Patent No. 3,494,819 to McAlister issued Feb.
  • the present invention is directed to a novel yarn and fabric having superior abrasion resistance, seam slippage and dimensional stability and decreased production costs.
  • the yarns of the present invention may be used on traditional looms such as Dornier mechanical weaving machines, as well as high speed weaving machines, such as aiqet, waterjet, projectile technology or multiphase weaving machines.
  • the yarns may be used to make fabrics for a variety of fabric applications.
  • the yarn is woven into fabrics for use as: blankets, tabletops, tops of beds, velvets, upholstery and other textile coverings for both indoor and outdoor applications, automotive and contract textiles, etc.
  • the method of producing yarn and fabrics comprises supplying a first yarn, supplying a low melt yarn, placing the two yarns adjacent to one another, and winding the two adjacent yarns.
  • the method of producing yarns and fabrics further comprises weaving the yarns into a fabric and heating the fabric, wherein heating the fabric heats the low melt yarn, melting at least one filament and adhering the low melt yam to the first yam or fabric.
  • the method of producing yarns and fabrics further comprises weaving the yams into a fabric, breaking at least one filament of the low melt yam, and heating the low melt yam, wherem heating the low melt yam melts at least one broken filament thereby adhering the low melt yam to the first yam or fabric.
  • the yarns of the present invention satisfy the need for a multi-purpose yam, capable of improved abrasion resistance, seam slippage and dimensional stability while eliminating traditional backing materials and costs associated with the production thereof.
  • the yarns and fabrics of the present invention reduce fumes and pollution resulting from backing material production and disposal, as well as increase savings in water from backing material mixing.
  • Figure 1 is a flow diagram of a method of the present invention for producing ya s and fabrics
  • Figure 2 is a flow diagram of a method of the present invention for producing textured fusion yarn
  • Figure 3 is an illustration of a method for producing traditional friction textured yarn, wherein the method incorporates fusion technology of the present invention
  • Figure 4 is a flow diagram of a method of the present invention for producing air textured fusion yam
  • Figure 5 is an illustration of a method for producing air jet textured yam, wherein the method incorporates fusion technology of the present invention
  • Figure 6 is a flow diagram of a method of the present invention for producing Chenille fusion yam
  • Figure 7 is an illustration of a method for producing Chenille yam
  • Figure 8 is an illustration of a method of producing Chenille fusion yam, wherein the method incorporates fusion technology of the present invention
  • Figure 9 is a flow diagram of a method of producing fancy or novelty fusion yarn, wherein the method incorporates fusion technology of
  • Air jet - technique for bulking filament yams by treating them with pressurized air from a miniature spout Chenille - a fuzzy yam whose pile resembles a caterpillar; used mainly for decorative fabrics, embroidery, and rags; sometimes used broadly to define a fabric woven from chenille yarns; Coated Fabrics - fabrics that have been coated with a substance to make them longer lasting, or impervious to water or other liquids; coating substances or materials include oil, pyroxylin, rubber, resins, melamines, plastics, and acrylic films; coated fabrics include oilcloth, imitation leathers, Koroseal, and others; Core Yarn - one in which one type of fiber is twisted or wrapped around another which serves as a core; often used to make stretch fabrics where the core is spandex or bber and the outer shell is a texturized man-made fiber such as polyester or nylon; some core yams are made for strength rather than stretch; Denier - a weight-per ⁇ unit-
  • Filament - 1. a fiber of indefinite length, such as filament acetate, rayon, nylon; may be miles long. 2. a single strand of rayon spinning solution as it is exuded from a spinneret orifice and coagulated in an acid bath or other medium; also true of other manmade filaments. 3.
  • Textured Yarns - made of continuous filaments there are modifications of these filaments in that the filaments do not lie parallel to one another; fabrics made of these yams have greater covering power and are softer than materials made from untreated filament yams; Twist - yam or cord has S-twist if, when held in a vertical position, the spiral conforms in slope to the central portion of the letter S; and Z-twist if the spirals conform in slope to the central portion of the letter z.
  • the method of producing yam and fabrics comprises supplying a first yam, supplying a low melt yam, wherein the low melt yam has at least one filament, placing the two yams adjacent to one another to create a fusion yam, and winding the fusion yam onto a bobbin or the equivalent thereof.
  • the method of producing yams and fabrics further comprises weaving the yarns into a fabric and heating the fabric, wherein heating the fabric heats the low melt yarn, melting at least one filament and adhering the low melt yarn to the first yarn or fabric.
  • the method of producing yams and fabrics further comprises weaving the fusion yam into a fabric, breaking at least one filament of the low melt yam, and heating the fusion yam, wherein heating the fusion yam melts at least one broken filament of the low melt yam, thereby adhering the low melt yarn to the first yarn or the fusion yam to the fabric.
  • Fig. 1 depicts a flow diagram of one aspect of the present invention.
  • the method of producing yams and fabrics comprises the following steps: manufacturing fusion yam 2, warping 4 a portion of the manufactured fusion yarn, sending 6 a portion of the manufactured fusion yarn to the loom as filling , looming 8 the yam into wave fabric, and heat setting or "finishing" 12 the fabric to melt the fusion fibers, another aspect, the method further comprises needle-punching 10 the fabric to cross fusion fibers before heat setting or "finishing" 12 the fabric to melt the fusion fibers.
  • the step of manufacturing 2 of fusion yam may be manufacturing 2 of textured fusion yam, Taslan fusion yarn, Chenille fusion yarn, or novelty fusion yam.
  • the step of manufacturing of fusion yam may be accomplished by manufacturing textured fusion yarn.
  • Fig. 2 is a flow diagram of one embodiment for a method of the present invention for producing textured fusion yam.
  • the method comprises fiber spinning 14 and false twist texturing 16 ("FTT") of Loy or Poy, fiber spinning 18 of low melt yam, coupling 20 the two yams with an air jet covering or intermingling device, and winding 22 the fusion textured yam.
  • FTT false twist texturing 16
  • a second embodiment as depicted in Fig. 3 an end of Loy or Poy or fully drawn yam is fed into a traditional false twist-texturing machine.
  • the Loy or Poy is passed by between shaft 0 24 and shaft 1 26 in the "take off zone" wherein the yam fed is stretched to give it a better molecule orientation to improve strength and reduce tensile elongation, hi the "take off zone", the Loy or Poy is drawn to the necessary draw ratio and with the required temperature to achieve the full drawn of the yam.
  • the yam is twisted and fed through an oven 30 to heat set the twist of the yam (texturing).
  • the twisted/textured yarn is fed through a false twist unit 32.
  • the low melt yarn 34 is fed to the false twist-texturing machine 32 at shaft 3 36, under controlled speed, by adding the necessary thread guides, rolls and other elements to achieve a coupling between textured yam and the low melt yam 34.
  • the two yams travel together through an entangling jet 38 where they are intermingled to create a new multifilament yarn.
  • the multifilament yarn is covered with suitable conning oil to avoid static electricity charges in the yarn and to lubricate the yam to reduce friction between the yam and contact points of metal or ceramic along the path to make warp beam or fabric.
  • the fusion yam is then wound into bobbins, or an equivalent thereof, in preparation for use.
  • the denier increases to approximately the total of the denier of the two yarns.
  • one or more ends of fully drawn yam, false twist textured yam or a combination of both are fed to a traditional air texturing machine, with rolls or shafts controlling the feeding speed of the yams.
  • a low melt yam is merged with fully drawn, false twist textured or a combination yam.
  • the resulting yam is then fed into a texturing jet, which further intermingles and textures the resulting yarn to create a fusion yam.
  • This fusion yam is removed from the jet and wound into cones or bobbins in preparation for further use.
  • the denier (measurement of the weight in grams of 9000 meters of yarn) may increase to approximately the total of the denier of the two yams if they were textured independently.
  • the step of manufacturing of fusion yarn may be accomplished by manufacturing Taslan or air jet textured yam.
  • Fig. 4 is a flow diagram illustration of one embodiment for producing Taslan or air jet textured fusion yam.
  • the method comprises feeding 40 continuous filament yam as effect; and feeding 42 low melt yam as core and in parallel with the continuous filament yam, , wherein the yams are fed into an air jet device.
  • the low melt yarn is fed from a wet device.
  • the wet device is a regulated flow valve to wet core yam wherein texturing ability is improved.
  • the method further comprises applying 44 the air jet device to the coupling and texturing yams, rolling to pick 46 and controlling texturing 46 in the air jet device, and winding 48 of fusion air jet textured yam.
  • air jet texturing produces a "parallel" yam.
  • air jet texturing produces a "core effect" yam.
  • the present invention is a method for producing parallel air jet textured yams, one or more yam ends are fed into an air texturing jet using for all ends exactly the same overfeed.
  • overfeeds depend on the end use for the yams and may be between approximately 5% and 30%.
  • Parallel yams may be used for apparel and cut pile plush fabrics in the automotive sector.
  • the present invention is a method for producing core effect yams.
  • the core effect yams have two components: the core yarn and the effect yam. Both yams may be either single or multiple ends.
  • the core yarn overfeed is lower than the overfeed of the effect yarn.
  • the core overfeed is very different then the effect yam overfeed.
  • the normal core yam overfeed is between 5 and 40%. Effect yams may be overfed (depending on the end use of the final yarn up) to around 400%.
  • Fig. 5 is an illustration of a method for producing air jet textured yam, wherein the method incorporates fusion technology of the present invention.
  • the low melt yarn 50 may be fed into the godet 54 that controls the core yarn 52.
  • the low melt yam 50 is fed into the godet 54 that controls the effect yam 56.
  • feeding the low melt yarn 50 into the godet 54 mixes the low melt yam 50 with the rest of the yams 52, 56 in the traditional ways described above.
  • the yams 50, 52, 56 are fed into an air jet device 58, rolled to pick while controlling the texture, and winding 60 the resulting yam.
  • Core-effect air textured yam is used widely when high bulk and volume is required.
  • core-effect air textured yam may be used in manufacturing upholstery, furniture and soft luggage.
  • fine denier yarn is also processed as core-effect yam.
  • fine denier yam may be processed as core-effect yam for sports wear.
  • the core yarn overfeed to the jet could be from about 5 to 15% and the effect yam overfeed may be from about 15 to about 400%. Jet manufacturers provide different jets for high and low overfeeds. The final denier also influences the jet design. The percentage of increase of denier will be the same amount of low melt yam multiplied by its percentage of overfeeding, being is as core or effect. The appropriate jet to use will become apparent to those of ordinary skill in the art.
  • Chenille Fusion Yarn Chenille yam consists of short lengths of spun yam or filaments that are held together by two or more ends of highly twisted fine strong yam. The short lengths are called “the pile” and the highly twisted yams are called “the core”.
  • Chenille yam may be made from many different types of fibers and yams. For example, chenille yam may be from cotton, viscose (rayon), acrylic, and polypropylene (olefin). In each embodiment, one type of fiber or yarn is matched to combine or meld with one type of low melt yarn. Chenille yam may be made in many different sizes, ranging from as heavy as approximately Nm 0.2 to as fine as approximately Nm 12.0.
  • Chenille yam is manufactured on a machine that is designed to bring the pile yams and core yarns together.
  • the pile yarns are wrapped around a short step of polished metal, called a caliper, through which a blade passes to cut the pile yams into short lengths.
  • the core yams are pressed onto the short lengths with a rotating metal wheel.
  • the resulting yam is then fed onto a traditional ring-twisted take-up mechanism. In the twisting process, the two ends of core yam twist and trap the short ends of pile.
  • the size of the caliper determines the diameter of the resulting yam.
  • one embodiment of the method of producing Chenille yarn and fabric of the present invention as depicted in Fig. 6 comprises feeding 62 yarns as effect with approximately 1 to 5 ends and feeding 64 two or more yams as core and in parallel with low melt yarn and into 66 a cutting and ensambling device which twists, traps and cuts the yarns, h the twisting process, the two ends of core yarn, and the ends of low melt yam, twist and trap the short ends of pile between the core yams.
  • the fusion Chenille yams are then wound 68.
  • the yam produced will be used in high speed looms, such as a negative rapier loom.
  • an additional step will be necessary.
  • the method therefore further comprises activating the low melt yam in an oven 70, heated tunnel, or equivalent thereof, so that the binder yarn melts and the pile is tied. This extra step avoids the loss of pile or effect in the Chenille yam and/or stops in the loom due to of breaks of the yam.
  • Activating the low melt yarn before wave in the loom does not reduce the effectiveness of the fusion yarn of the present invention.
  • the increase in denier will be the addition of the total amount of the denier of low melt yam. Figs.
  • FIG. 7 and 8 are illustrations Chenille yams and fabrics of the present invention.
  • core yarns keep tied to effect yams by twisting.
  • Effect yams 72 are situated across the same size cut as illustrated in Fig. 7.
  • at least one low melt yarn 50 is incorporated as a special core, in order to stick effect yams 56 to the core, as illustrated in Fig. 8.
  • Novelty or Fancy Fusion Yarns Novelty yams and fancy yams are special yams made of continuous filament or to improve handle, spun yams. Novelty and fancy yams are traditionally made twisting and winding, sometimes adding a continuous filament as a binder to "fix" the arrangement of loops and knots on the yam.
  • the production of novelty yams begins with distributing the yarns and arranging the yams to be fed into a twisting or winding device.
  • the twisting or winding device has a series of shafts running at different speed ratios, in such a way to feed at least one end of a core yam.
  • One or more yams will be fed by another shaft at different speeds than the previous one so that the ratio of speeds between the two shafts will be the ratio of overfeeding the yams respective to the core.
  • the arrangement of the yams is passed inside a hollow spindle that contains a third arrangement of yam.
  • This third arrangement of yam holds a binder yam.
  • a low melt yam may be added or substituted to create a fancy or novelty fusion yarn, h one embodiment, the low melt yam is, or is added to, the core yam. In another embodiment, the low melt yam is, or is added to, the effect yarn.
  • the low melt yam will be pulled into the structure of the yam.
  • Figs. 9 and 10 depict a method of producing fancy or novelty fusion yarn, wherein the method incorporates fusion technology of the present invention, hi one embodiment, the method comprises feeding 72 the yarn as effect, feeding 74 continuous filament or staple tow, and feeding 76 low melt yarn plus continuous filament as binder, all into 78 a fancy twister machine or any coupling, twisting and , effect maker machine. The method further comprises, winding 80 of fusion fancy yam and heat setting 82 the resulting yam to activate the low melt fibers.
  • the low melt yam is chosen so that it has affinity to the other yams used, and adheres to it.
  • the low melt yarn may be polyethylene, polyamide copolymer or terpolymer (i.e. a polymer of three different molecules), low melt nylon 11 or copolyester.
  • the melting point of the other yams used will determine the correct corresponding low melt yarn to select.
  • a polyolefin such as polypropylene might be paired with a polyethylene copolymer, because the polyethylene copolymer' s melting point is approximately 90- 120°C.
  • the range of deniers for binders of low melt yam to be used will depend on the anticipated final denier.
  • the range of deniers for binders will be in the range of about 5 to 40% in weight of the total denier anticipated.
  • Average results from typical textile tests of the fusion yams give the following results: dynamic seam fatigue of less than 3 mm separation at 5000 cycles; seam slippage greater than 60 pounds; tensile strength greater than 120 pounds; seam strength of greater than 95 pounds; and Wyzenbeck abrasion measure showed no apparent wear after 15000 cycles.

Abstract

The yams of the present invention satisfy the need for a multi-purpose yam. In one aspect, the method of producing yarn and fabrics comprises supplying a first yam, supplying a low melt yam, placing the two yams adjacent to one another, and winding the two adjacent yams. In another aspect, the method of producing yams and fabrics further comprises weaving the yams into a fabric and heating the fabric, wherein heating the fabric heats the low melt yam, melting at least one filament and adhering the low melt yarn to the first yam or fabric. In yet another aspect, the method of producing yams and fabrics further comprises weaving the yams into a fabric, breaking at least one filament of the low melt yam, and heating the low melt yam, wherein heating the low melt yam melts at least one broken filament thereby adhering the low melt yam to the first yam or fabric.

Description

METHOD OF PRODUCING YARNS AND FABRICS
Priority Information This application claims priority to the U.S. Provisional Patent Application 60/549, 113 filed on March 1 , 2004.
Field of Invention The present invention is directed towards the production of yarn and fabrics. Specifically, the invention relates to the production of yarn and fabrics with improved abrasion resistance, seam slippage and dimensional stability without the use of traditional backing coating.
Background of Invention The present invention concerns yarns and fabrics that have significantly improved abrasion resistanpe, seam slippage and dimensional stability and methods for their production. , It is known (see U.S. Patent No. 2,252,999 to Wallach, issued Aug. 19, 1941 and U.S. Patent No. 3,877,214 to Van der Werf, issued Apr. 15, 1975) to blend non- adhesive fibers with potentially adhesive fibers to form a yarn or other textile structure, then to activate the potentially adhesive fibers to bond them to contacting fibers, thus modifying end-use properties of the yarn. U.S. Patent No. 3,494,819 to McAlister, issued Feb. 10, 1979, discloses a blend of fusible and non-fusible polyethylene terephthalate fibers incorporated into fabric, wherein the finished fabric is heated to fusion temperatures to provide improved pill resistance. U.S. Patent No. 3,978,267 to Selwood, issued Aug. 31, 1976 discloses an adhesive fiber to bond to contacting fibers. These patents, however, all disclose methods of making fabrics with backing. Furthermore, the inventions of the prior art have high production costs, waste, fumes, and water usage. The methods used, for example in U.S. Patent Nos. 6,344,254, 6,300,398, and 4,752,634, require high production costs, utilize complex formulas and methods to application on fabrics, and are linked with numerous environmental problems associated with manufacturing of backing coatings. In many applications, such as curtains, blankets or tabletops, it would be advantageous for both sides to be visible and aesthetically pleasing, which the prior art does not accomplish. Furthermore, in many applications, it is desirable to use a continuous lay down in the pattern cutting operation, wherein the fabric is folded to form multiple layers and cut. This exposes alternate sides in the finished products. A one-sided fabric, as in the case of backed coated fabrics, prohibits taking advantage of these concerns. Accordingly, there is a need in the art to provide yarns and fabrics that have improved abrasion resistance, seam slippage and dimensional stability while eliminating the need for use of traditional backing materials and complex manufacturing methods that result in high cost, high waste production and environmentally dangerous fumes.
Summary of Invention In one aspect, the present invention is directed to a novel yarn and fabric having superior abrasion resistance, seam slippage and dimensional stability and decreased production costs. The yarns of the present invention may be used on traditional looms such as Dornier mechanical weaving machines, as well as high speed weaving machines, such as aiqet, waterjet, projectile technology or multiphase weaving machines. The yarns may be used to make fabrics for a variety of fabric applications. In several embodiments of the present invention, the yarn is woven into fabrics for use as: blankets, tabletops, tops of beds, velvets, upholstery and other textile coverings for both indoor and outdoor applications, automotive and contract textiles, etc. hi one aspect, the method of producing yarn and fabrics comprises supplying a first yarn, supplying a low melt yarn, placing the two yarns adjacent to one another, and winding the two adjacent yarns. In another aspect, the method of producing yarns and fabrics further comprises weaving the yarns into a fabric and heating the fabric, wherein heating the fabric heats the low melt yarn, melting at least one filament and adhering the low melt yam to the first yam or fabric. In yet another aspect, the method of producing yarns and fabrics further comprises weaving the yams into a fabric, breaking at least one filament of the low melt yam, and heating the low melt yam, wherem heating the low melt yam melts at least one broken filament thereby adhering the low melt yam to the first yam or fabric. The yarns of the present invention satisfy the need for a multi-purpose yam, capable of improved abrasion resistance, seam slippage and dimensional stability while eliminating traditional backing materials and costs associated with the production thereof. In addition, the yarns and fabrics of the present invention reduce fumes and pollution resulting from backing material production and disposal, as well as increase savings in water from backing material mixing. Further savings of the present invention include: the ability to create fabrics with less yam and that are lighter, while still capable of improved qualities; and the elimination of special treatments necessary to remove backing before materials may be recycled. Two-sided fabrics designed in constructions that traditionally require back coating and fabrics that cannot contain back coating, such as blankets or tabletops, may be made with the improved yams of the present invention.
Brief Description of the Drawing Figure 1 is a flow diagram of a method of the present invention for producing ya s and fabrics; Figure 2 is a flow diagram of a method of the present invention for producing textured fusion yarn; Figure 3 is an illustration of a method for producing traditional friction textured yarn, wherein the method incorporates fusion technology of the present invention; Figure 4 is a flow diagram of a method of the present invention for producing air textured fusion yam; Figure 5 is an illustration of a method for producing air jet textured yam, wherein the method incorporates fusion technology of the present invention; Figure 6 is a flow diagram of a method of the present invention for producing Chenille fusion yam; Figure 7 is an illustration of a method for producing Chenille yam; Figure 8 is an illustration of a method of producing Chenille fusion yam, wherein the method incorporates fusion technology of the present invention; Figure 9 is a flow diagram of a method of producing fancy or novelty fusion yarn, wherein the method incorporates fusion technology of the present invention; Figure 10 is an illustration of a method of producing fancy or novelty fusion yam, wherein the method incorporates fusion technology of the present invention.
Detailed Description of Preferred Embodiments of the Present Invention
Definitions Air jet - technique for bulking filament yams by treating them with pressurized air from a miniature spout; Chenille - a fuzzy yam whose pile resembles a caterpillar; used mainly for decorative fabrics, embroidery, and rags; sometimes used broadly to define a fabric woven from chenille yarns; Coated Fabrics - fabrics that have been coated with a substance to make them longer lasting, or impervious to water or other liquids; coating substances or materials include oil, pyroxylin, rubber, resins, melamines, plastics, and acrylic films; coated fabrics include oilcloth, imitation leathers, Koroseal, and others; Core Yarn - one in which one type of fiber is twisted or wrapped around another which serves as a core; often used to make stretch fabrics where the core is spandex or bber and the outer shell is a texturized man-made fiber such as polyester or nylon; some core yams are made for strength rather than stretch; Denier - a weight-per~unit-length measure of any linear material; approximately the weight in grams of 9.000 meters of the material; denier is a direct numbering system in which the low numbers represent the finer sizes and the higher numbers the coarser sizes; in the U.S. the denier is used for numbering filament yams
(except glass), man-made fiber staple (but not spun ya s), and tow; in most countries outside the U.S. the denier system has been replaced by the tex system; Drawing-In - the actual drawing in of warp ends from the warp beam, through the heddle eyes on the harness frames, and then through the reed splits of the reed of the loom; a plan may be followed so that the actual weave from design paper will be produced in the woven cloth; End - one thread of the warp; one thread of yam; Effect - 1. one in which one type of fiber is twisted or wrapped (effect) around another that serves as the core; 2. the component which in the Chenille is the "pile"; 3. the end in air jet textured yam and in novelty yams which is overfed to form bulkiness or loops, or any other textural effect; Fabric - any woven, knitted, plaited, braided, felted, or non-woven material made of fibers or yams; may be knitted, made on a loom, needled, or constructed in another fashion; the industry distinguishes three classes of fabrics-apparel, decorative, and industrial; False Twist - the major process used in texturizing thermoplastic filament yams; a rotating spindle twists the yam, which is then set in a heater-box or tube, after which it is untwisted; called by this name since the twist inserted does not become permanent, however it does remain in part because of the so-called "memory" of the twist that was inserted in the processing; the yam gains torque (the movement of forces that cause rotation or twisting as in the instance of twisting cord, wire or yam), or stretch, as well as bulkiness; to remove stretch the yam is subjected to a second heat treatment which affords stabilization but, at the same time, retains bulkiness; Feeder Yarn - a roll, godet or other technique that supply yam into a machine under controlled speed and tension; Fiber - the fundamental unit comprising a textile raw material such as cotton, wool, etc.; maybe elongated single celled seed hairs like cotton; elongated multicellular structures such as wool; an aggregation of elongated cells like flax; or man-made filaments like nylon, polyester, rayon; in order to be spun into a yarn, a fiber must possess sufficient length, strength, pliability, and cohesiveness; now used in a broad sense to include filament yams, monofilaments, and tow. Filament - 1. a fiber of indefinite length, such as filament acetate, rayon, nylon; may be miles long. 2. a single strand of rayon spinning solution as it is exuded from a spinneret orifice and coagulated in an acid bath or other medium; also true of other manmade filaments. 3. the single unit which is extruded by a silkworm in spinning its cocoon; Loy - low oriented yarn; yam that has very low orientation due to low spinning speed to be produced by the fiber producer and hence must be finished by a draw twister machine before further processing such as air texturing or Chenille yam manufacture; Novelty Yarns - irregular, uneven-in-diameter yams made for special textured and textural effects; examples include boucle, bug, chenille, Knickerbocker, loop, nub, slub, thick-and-thin, etc.; Olefin - manufactured fiber in which the fiber-forming substance is any long chain synthetic polymer composed of at least 85 percent by weight of ethylene, propylene, or other olefin units; regular trademark's include: Herculon (Hercules) and Marvess (Phillips); Oven - chamber used by garments manufacturers to apply heat to the garment in order to set, or cure, a durable press finish on the article; Poy - partially oriented yams; yams that have been only partially drawn by the fiber producer and hence must be finished by a throwster before further processing such as texturizing; Taslan - registered trademark for a textured yarn that is different from spun yam or continuous filament yam in that it is made on a bulking process developed by DuPont; its hand, loftiness, covering power, and yam texture are such that these properties are permanent and do not require special handling or care; the method may be applied to any thermoplastic fiber. Textured Yarns - made of continuous filaments, there are modifications of these filaments in that the filaments do not lie parallel to one another; fabrics made of these yams have greater covering power and are softer than materials made from untreated filament yams; Twist - yam or cord has S-twist if, when held in a vertical position, the spiral conforms in slope to the central portion of the letter S; and Z-twist if the spirals conform in slope to the central portion of the letter z. See "S", and "Z"; Twist, False - in processing a heat-set stretch yam it is passed through a "false- twist" spindle and twisting begins at this time; when omitted from the spindle the twist is automatically removed, hence, the term, false-twist; the yam, however, retains "a memory" of its twisted position or torque and seeks to return to that position; it is therefore wound or taken-up under tension to prevent it from curling; the torque in the yam is balanced later on in processing by doubling it with another yam whose "remembered" twist goes in the opposite direction; thus, a yam with an "S-twist" and "Z-twist"; Warp - yarns which run vertically or lengthwise in woven goods; Warping - transferring of the warp yam from a cheese onto the warp beam which is built up in sections to make the complete warp beam filled with the yam; full beams may weigh as much as 1,500 pounds; Yarn - generic term for an assemblage of fibers or filaments, either natural or man-made, twisted together to form a continuous strand which can be used for ( weaving, knitting, plaiting, braiding, of the manufacture of lace, or otherwise made into a textile material.
Preferred Embodiments In one aspect, the method of producing yam and fabrics comprises supplying a first yam, supplying a low melt yam, wherein the low melt yam has at least one filament, placing the two yams adjacent to one another to create a fusion yam, and winding the fusion yam onto a bobbin or the equivalent thereof. In another aspect, the method of producing yams and fabrics further comprises weaving the yarns into a fabric and heating the fabric, wherein heating the fabric heats the low melt yarn, melting at least one filament and adhering the low melt yarn to the first yarn or fabric. h yet another aspect, the method of producing yams and fabrics further comprises weaving the fusion yam into a fabric, breaking at least one filament of the low melt yam, and heating the fusion yam, wherein heating the fusion yam melts at least one broken filament of the low melt yam, thereby adhering the low melt yarn to the first yarn or the fusion yam to the fabric. For example, Fig. 1 depicts a flow diagram of one aspect of the present invention. In this aspect, the method of producing yams and fabrics comprises the following steps: manufacturing fusion yam 2, warping 4 a portion of the manufactured fusion yarn, sending 6 a portion of the manufactured fusion yarn to the loom as filling , looming 8 the yam into wave fabric, and heat setting or "finishing" 12 the fabric to melt the fusion fibers, another aspect, the method further comprises needle-punching 10 the fabric to cross fusion fibers before heat setting or "finishing" 12 the fabric to melt the fusion fibers. In different embodiments of this aspect, the step of manufacturing 2 of fusion yam may be manufacturing 2 of textured fusion yam, Taslan fusion yarn, Chenille fusion yarn, or novelty fusion yam.
False Twist Textured Fusion Yarn In certain embodiments, the step of manufacturing of fusion yam may be accomplished by manufacturing textured fusion yarn. Fig. 2 is a flow diagram of one embodiment for a method of the present invention for producing textured fusion yam. In this embodiment, the method comprises fiber spinning 14 and false twist texturing 16 ("FTT") of Loy or Poy, fiber spinning 18 of low melt yam, coupling 20 the two yams with an air jet covering or intermingling device, and winding 22 the fusion textured yam. hi a second embodiment as depicted in Fig. 3, an end of Loy or Poy or fully drawn yam is fed into a traditional false twist-texturing machine. The Loy or Poy is passed by between shaft 0 24 and shaft 1 26 in the "take off zone" wherein the yam fed is stretched to give it a better molecule orientation to improve strength and reduce tensile elongation, hi the "take off zone", the Loy or Poy is drawn to the necessary draw ratio and with the required temperature to achieve the full drawn of the yam. hi the second step, between shaft 1 26 and the friction disk 28, the yam is twisted and fed through an oven 30 to heat set the twist of the yam (texturing). The twisted/textured yarn is fed through a false twist unit 32. The low melt yarn 34 is fed to the false twist-texturing machine 32 at shaft 3 36, under controlled speed, by adding the necessary thread guides, rolls and other elements to achieve a coupling between textured yam and the low melt yam 34. The two yams travel together through an entangling jet 38 where they are intermingled to create a new multifilament yarn. The multifilament yarn is covered with suitable conning oil to avoid static electricity charges in the yarn and to lubricate the yam to reduce friction between the yam and contact points of metal or ceramic along the path to make warp beam or fabric. The fusion yam is then wound into bobbins, or an equivalent thereof, in preparation for use. In this embodiment, the denier (measurement of the weight in grams of 9000 meters of yam) increases to approximately the total of the denier of the two yarns.
Air Jet Textured or Taslan Fusion Yarn In another embodiment, one or more ends of fully drawn yam, false twist textured yam or a combination of both are fed to a traditional air texturing machine, with rolls or shafts controlling the feeding speed of the yams. In the feeding device, a low melt yam is merged with fully drawn, false twist textured or a combination yam. The resulting yam is then fed into a texturing jet, which further intermingles and textures the resulting yarn to create a fusion yam. This fusion yam is removed from the jet and wound into cones or bobbins in preparation for further use. The denier (measurement of the weight in grams of 9000 meters of yarn) may increase to approximately the total of the denier of the two yams if they were textured independently. In other embodiments, the step of manufacturing of fusion yarn may be accomplished by manufacturing Taslan or air jet textured yam. Fig. 4 is a flow diagram illustration of one embodiment for producing Taslan or air jet textured fusion yam. The method comprises feeding 40 continuous filament yam as effect; and feeding 42 low melt yam as core and in parallel with the continuous filament yam, , wherein the yams are fed into an air jet device. In one embodiment, the low melt yarn is fed from a wet device. In this embodiment, the wet device is a regulated flow valve to wet core yam wherein texturing ability is improved. The method further comprises applying 44 the air jet device to the coupling and texturing yams, rolling to pick 46 and controlling texturing 46 in the air jet device, and winding 48 of fusion air jet textured yam. In one embodiment, air jet texturing produces a "parallel" yam. hi another embodiment, air jet texturing produces a "core effect" yam. In an embodiment wherein the present invention is a method for producing parallel air jet textured yams, one or more yam ends are fed into an air texturing jet using for all ends exactly the same overfeed. Generally, overfeeds depend on the end use for the yams and may be between approximately 5% and 30%. Parallel yams may be used for apparel and cut pile plush fabrics in the automotive sector. In another embodiment, the present invention is a method for producing core effect yams. In this embodiment, the core effect yams have two components: the core yarn and the effect yam. Both yams may be either single or multiple ends. The core yarn overfeed, however, is lower than the overfeed of the effect yarn. In some embodiments, the core overfeed is very different then the effect yam overfeed. In another embodiment, the normal core yam overfeed is between 5 and 40%. Effect yams may be overfed (depending on the end use of the final yarn up) to around 400%. Fig. 5 is an illustration of a method for producing air jet textured yam, wherein the method incorporates fusion technology of the present invention. In one embodiment, the low melt yarn 50 may be fed into the godet 54 that controls the core yarn 52. hi another embodiment, the low melt yam 50 is fed into the godet 54 that controls the effect yam 56. In both of these embodiments, feeding the low melt yarn 50 into the godet 54 mixes the low melt yam 50 with the rest of the yams 52, 56 in the traditional ways described above. The yams 50, 52, 56 are fed into an air jet device 58, rolled to pick while controlling the texture, and winding 60 the resulting yam. Core-effect air textured yam is used widely when high bulk and volume is required. For example, core-effect air textured yam may be used in manufacturing upholstery, furniture and soft luggage. However, fine denier yarn is also processed as core-effect yam. For example, fine denier yam may be processed as core-effect yam for sports wear. In one embodiment, the core yarn overfeed to the jet could be from about 5 to 15% and the effect yam overfeed may be from about 15 to about 400%. Jet manufacturers provide different jets for high and low overfeeds. The final denier also influences the jet design. The percentage of increase of denier will be the same amount of low melt yam multiplied by its percentage of overfeeding, being is as core or effect. The appropriate jet to use will become apparent to those of ordinary skill in the art.
Chenille Fusion Yarn Chenille yam consists of short lengths of spun yam or filaments that are held together by two or more ends of highly twisted fine strong yam. The short lengths are called "the pile" and the highly twisted yams are called "the core". Chenille yam may be made from many different types of fibers and yams. For example, chenille yam may be from cotton, viscose (rayon), acrylic, and polypropylene (olefin). In each embodiment, one type of fiber or yarn is matched to combine or meld with one type of low melt yarn. Chenille yam may be made in many different sizes, ranging from as heavy as approximately Nm 0.2 to as fine as approximately Nm 12.0. Traditionally, Chenille yam is manufactured on a machine that is designed to bring the pile yams and core yarns together. During manufacture, the pile yarns are wrapped around a short step of polished metal, called a caliper, through which a blade passes to cut the pile yams into short lengths. The core yams are pressed onto the short lengths with a rotating metal wheel. The resulting yam is then fed onto a traditional ring-twisted take-up mechanism. In the twisting process, the two ends of core yam twist and trap the short ends of pile. The size of the caliper determines the diameter of the resulting yam. The size and number of the pile yams and how much of them are fed onto the core determines the count of the yam. h one embodiment of the method of producing Chenille yarn and fabric of the present invention as depicted in Fig. 6 comprises feeding 62 yarns as effect with approximately 1 to 5 ends and feeding 64 two or more yams as core and in parallel with low melt yarn and into 66 a cutting and ensambling device which twists, traps and cuts the yarns, h the twisting process, the two ends of core yarn, and the ends of low melt yam, twist and trap the short ends of pile between the core yams. The fusion Chenille yams are then wound 68. In certain other embodiments, the yam produced will be used in high speed looms, such as a negative rapier loom. In these embodiments, an additional step will be necessary. The method therefore further comprises activating the low melt yam in an oven 70, heated tunnel, or equivalent thereof, so that the binder yarn melts and the pile is tied. This extra step avoids the loss of pile or effect in the Chenille yam and/or stops in the loom due to of breaks of the yam. Activating the low melt yarn before wave in the loom does not reduce the effectiveness of the fusion yarn of the present invention. The increase in denier will be the addition of the total amount of the denier of low melt yam. Figs. 7 and 8 are illustrations Chenille yams and fabrics of the present invention. During the Chenille manufacturing process, core yarns keep tied to effect yams by twisting. Effect yams 72 are situated across the same size cut as illustrated in Fig. 7. During the Chenille fusion process, at least one low melt yarn 50 is incorporated as a special core, in order to stick effect yams 56 to the core, as illustrated in Fig. 8.
Novelty or Fancy Fusion Yarns Novelty yams and fancy yams are special yams made of continuous filament or to improve handle, spun yams. Novelty and fancy yams are traditionally made twisting and winding, sometimes adding a continuous filament as a binder to "fix" the arrangement of loops and knots on the yam. In one aspect, the production of novelty yams begins with distributing the yarns and arranging the yams to be fed into a twisting or winding device. The twisting or winding device has a series of shafts running at different speed ratios, in such a way to feed at least one end of a core yam. One or more yams will be fed by another shaft at different speeds than the previous one so that the ratio of speeds between the two shafts will be the ratio of overfeeding the yams respective to the core. The arrangement of the yams is passed inside a hollow spindle that contains a third arrangement of yam. This third arrangement of yam holds a binder yam. In any of the three yams used (core, effect or binder), a low melt yam may be added or substituted to create a fancy or novelty fusion yarn, h one embodiment, the low melt yam is, or is added to, the core yam. In another embodiment, the low melt yam is, or is added to, the effect yarn. In these embodiments, the low melt yam will be pulled into the structure of the yam. Figs. 9 and 10 depict a method of producing fancy or novelty fusion yarn, wherein the method incorporates fusion technology of the present invention, hi one embodiment, the method comprises feeding 72 the yarn as effect, feeding 74 continuous filament or staple tow, and feeding 76 low melt yarn plus continuous filament as binder, all into 78 a fancy twister machine or any coupling, twisting and , effect maker machine. The method further comprises, winding 80 of fusion fancy yam and heat setting 82 the resulting yam to activate the low melt fibers.
In certain aspects and embodiments, the low melt yam is chosen so that it has affinity to the other yams used, and adheres to it. For example, the low melt yarn may be polyethylene, polyamide copolymer or terpolymer (i.e. a polymer of three different molecules), low melt nylon 11 or copolyester. The melting point of the other yams used will determine the correct corresponding low melt yarn to select. For example, a polyolefin such as polypropylene might be paired with a polyethylene copolymer, because the polyethylene copolymer' s melting point is approximately 90- 120°C. The range of deniers for binders of low melt yam to be used will depend on the anticipated final denier. Generally, the range of deniers for binders will be in the range of about 5 to 40% in weight of the total denier anticipated. Average results from typical textile tests of the fusion yams give the following results: dynamic seam fatigue of less than 3 mm separation at 5000 cycles; seam slippage greater than 60 pounds; tensile strength greater than 120 pounds; seam strength of greater than 95 pounds; and Wyzenbeck abrasion measure showed no apparent wear after 15000 cycles.
What is claimed is:

Claims

1. A method of producing fusion ya and fabric, comprising: supplying a first yam; supplying a low melt yarn; placing the first yam adjacent to the low melt yam; and winding the two adjacent yams together to create a fusion yarn.
2. The method of claim 1 , wherein the fusion yam is textured fusion yam.
3. The method of claim 2, further comprising: fiber spinning the first yam; false twist texturing the first yarn; fiber spinning the low melt yam; and coupling the two yarns with an air jet covering device to create a fusion yam.
4. The method of claim 2, further comprising: fiber spinning the first yam; false twist texturing the first yarn; fiber spinning the low melt yam; and intermingling the two yams with an intermingling device to create a fusion yam.
5. The method of claim 3 or 4, wherein the first yarn is LOY undrawn yam.
6. The method of claim 3 or 4, further comprising texturing the two yams.
7. The method of claim 1, wherein the fusion yam is Taslan fusion yam.
8. The method of claim 7, further comprising: feeding the first yam as effect into an air jet device; and feeding the low melt yam as core and in parallel with the first yam into an air jet device.
9. The method of claim 8, wherein the first yam is continuous filament yarn.
10. The method of claim 1, wherein the fusion yam is Chenille fusion yam.
11. The method of claim 10, further comprising: feeding at least one first yam as effect into a cutting and ensambling device; feeding at least one second yam as core in parallel with at least one first yam and into a cutting and ensambling device, wherein at least one second yam includes at least one low melt yarn; twisting, trapping and cutting the yams in the cutting and ensambling device to create fusion yams; and winding the fusion yams.
12. The method of claim 11 , further comprising: heat setting the fusion yams to activate the low melt fibers.
13. The method of claim 1 , wherein the fusion yam is novelty fusion yarn.
14. The method of claim 13, further comprising: feeding the first yam as effect into a twister device; feeding a second yarn into a twister device; feeding the low melt yarn plus the first yarn as a binder, into a twister device; coupling, twisting or effect-making the yarns in the twister device to create fusion yams; and winding the fusion ya s.
15. The method of claim 14, further comprising: heat setting the fusion yams to activate the low melt fibers.
16. The method of claim 14, wherein the first yam is a continuous filament.
17. The method of claim 14, wherein the first yam is a staple tow.
18. The method of claim 14, wherein the binder is a continuous filament.
19. The method of claim 1 , further comprising: weaving the fusion yam into a fabric; and heating the low melt yam, wherein heating the low melt yam melts at least one filament of the low melt yam.
20. The method of claim 19, further comprising: breaking at least one filament of the low melt yarn.
21. The method of claim 19 or 20, wherein the weaving the fusion yam into a fabric comprises: warping a portion of the fusion yam; sending a portion of the fusion yam to the loom; and looming the fusion yarn into fabric.
22. A composition of yam, comprising: a first yam; and a low melt yam, wherein the first yam is adjacent to the low melt yam, and wherein the two yarns are wound together to create a fusion yarn.
23. A composition of fabric, comprising: a first yam; a low melt yam; wherein the first yam is adjacent to the low melt yam, and wherein the two yams are wound together to create a fusion yam; and a weave of the fusion yarn into a fabric, wherein the fabric is heated to melt at least one filament of the low melt yam.
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