CN1934300A - Composite twist yarn - Google Patents

Abstract

A yarn which has a high tenacity and which dose not cause troubles such as breaking even when woven or knitted on a high-speed weaving or kitting machine and can give a woven or kitted fabric or cloth having high stretchability. A composite twist yarn obtained by intertwisting at least a spun yarn and a water-soluble yarn, in which the direction of twist of the composite twist yarn is opposite to that of the spun yarn and which satisfies the following requirement (i) or (ii): (i) the twist number of the composite twist yarn is 1.3 to 3 times that of the spun yarn and the spun yarn/water soluble yarn weight ratio is 20/80 to 98/2, and (ii) the composite twist yarn further comprises an elastic yarn (2) stretched 2- to 5-fold in a state intertwisted with the above two yarns; and the twist number of the composite twist yarn is 0.3 to 3 times that of the spun yarn, while the weight ratio of the spun yarn (1) to the elastic yarn (2) is 50/50 to 99.9/0.1 and the weight ratio of the sum total of the spun yarn (1) and the elastic yarn (2) to the water-soluble yarn (3) is 30/70 to 99/1.

Description

Composite twist yarn

Technical field

The present invention relates to the composite twist yarn and the manufacture method thereof that form to major general's staple fibre yarn and water-soluble yarn twisted, and use that above-mentioned composite twist yarn forms woven or pin is woven or knitted fabric or cloth and silk and manufacture method thereof.

Background technology

For the woven or knitted fabric that uses staple fibre yarn has retractility, people have carried out various researchs.For example, woven or knitted fabric by the complex yarn manufacturing, wherein said complex yarn is combined by staple fibre yarn and polyurethane stretch yarn, this woven or knitted fabric has retractility, with the sticking nature of human body,, comfortable and easy to wear to the tracing ability excellence of physical activity, do not fetter human action, therefore extensive use in dress material purposes such as motion dress material, underwear, substrate.Also bring into play its retractility in addition, be applied in industrial materials purposes such as medical application, vehicle inner decoration material, conveyor materials such as Elastic bandage etc.

The representative example of the complex yarn that staple fibre yarn and polyurethane stretch yarn are combined has: (1) with the polyurethane stretch yarn as heart yarn, cover with cotton with weaving around it, the cladded yarn of twisting then and obtaining, (2), are twined individual layer that the single or multiple lift staple fibre yarn forms or double-deck bag core fancy yarn, (3) around it and two or above staple fibre yarn and polyurethane stretch yarn are twisted the twine that forms etc. as heart yarn with the polyurethane stretch yarn.

In the above-mentioned complex yarn, cladded yarn (1) is that weaving coats the polyurethane stretch yarn fully with cotton, therefore has and the constant feel of staple fibre yarn single thread.But in spinning process, for coating the polyurethane stretch yarn fully and carry out joint etc. with the pneumatic twisting device that uses in the spinning process with cotton with weaving, this requires very high technology, makes difficulty.And, in order to coat the polyurethane stretch yarn fully with cotton, use a large amount of weavings, the easy chap of the cladded yarn that finally obtains, the extremely difficult cladded yarn of making the ramuscule number with cotton with weaving.And, need be used as weaving with the selecting of cotton raw cotton, and need very high technology as mentioned above, so be difficult to adapt to small lot batch manufacture.And present stage mainly uses the cotton weaving of using as cladded yarn with cotton, establishes as yet with the stable production technology of cotton cladded yarn as weaving about using cotton fiber in addition such as other natural fabric such as fiber crops or thin,tough silk or synthetic fiber.And the manufacture process of cladded yarn is the cotton manufacturing of twisting on one side before the network weaving on the polyurethane stretch yarn on one side, so the yarn brute force of cladded yarn itself or retractility are not too high.Therefore be difficult to use the brute force or the contracting property of gentry of woven or knitted fabric of cladded yarn manufacturing enough.The surface of cladded yarn is easy to generate fluffing in addition, and the starching processing is indispensable when woven or knitting, and the productive rate of woven or knitting process is low.

Above-mentioned bag core yarn (2) is that thread staple fibre yarn twines the polyurethane stretch yarn, the yarn strength excellence, and outward appearance or sense of touch are good, can make the yarn of thick number to desirable fiber numbers such as ramuscule numbers.But staple fibre yarn need be twined the polyurethane stretch yarn, covered by staple fibre yarn fully until the polyurethane stretch yarn, so productive rate be low.And the woven or knitted fabric weight of using this composite yarn to obtain is big.

Above-mentioned twine (3) normally makes many staple fibre yarns and polyurethane stretch yarn doubling twisted, does not therefore need selecting of necessary raw cotton in the above-mentioned cladded yarn (1), and the productive rate height can adapt to the many kinds of small lot.But, the polyurethane stretch yarn takes place easily not enclosed fully between two or the above staple fibre yarn, the polyurethane stretch yarn is exposed to the problem in the outside of staple fibre yarn, and problem that the polyurethane stretch yarn cuts off etc. takes place in manufacturing process of twine.And, owing to use two or above staple fibre yarn,, must use the diameter 1/2 of target twine or following ramuscule number high price staple fibre yarn for making the twine of ramuscule number, thus the manufacturing difficulty of twine's (particularly ramuscule is counted twine), the cost height.

A kind of composite twist yarn is disclosed in the TOHKEMY 2001-131838 communique (patent documentation 1), this composite twist yarn is to be formed by 1 staple fibre yarn and 1 or above long fiber twisted, the sth. made by twisting of above-mentioned composite twist yarn to the sth. made by twisting of above-mentioned staple fibre yarn to identical, and the former twisting count is bigger than the latter's twisting count.But this complex yarn can't reduce the twist torque of twist yarn, and the brute force of yarn or retractility, feel is all not enough.

The somebody has studied and has improved the method for retractility of not using the polyurethane stretch yarn and using the woven or knitted fabric of staple fibre yarn.Because the retractility of polyurethane stretch yarn is big, the complex yarn that uses the polyurethane stretch yarn is in the processing of yarn and carry out needing special device and high technology when woven or knitting.In addition, the polyurethane stretch yarn is because deterioration easily takes place in heat or light etc. in time, therefore uses the complex yarn of polyurethane stretch yarn and woven or its retractility of knitted fabric slowly to lose.And use woven or its flexibility of knitted fabric that the complex yarn contain the polyurethane stretch yarn makes, soft feel, light weight etc. to reduce easily.

Therefore the manufacture method of retractility wool cloth and silk is for example disclosed in the Japanese kokai publication hei 11-241269 communique (patent documentation 2), this method is to use the blended yarn of wool fibre and water-soluble polyvinyl alcohol fibers to form cloth and silk, on one side cloth and silk is immersed in the normal temperature water-bath, heat up on one side, water-soluble polyvinyl alcohol fibers is shunk, dissolving is removed then, then to the cloth and silk that the has only wool fibre processing of finalizing the design.But in this method, the yarn strength of blended yarn is low, uses high-speed weaving machine or knitting machine to carry out problems such as broken string taking place easily when woven or knitting.Mechanical properties such as the contracting property of gentry of gained wool cloth and silk or intensity are also low in addition.And in this method,, then be difficult to obtain the cloth and silk of retractility if use other fiber such as cotton or synthetic fiber to replace wool.

The method of making 100% goat cashmere cloth and silk is disclosed in the European patent 1061162B1 communique (patent documentation 3), this method is with the goat cashmere yarn and at high temperature slightly acidic water solution is had deliquescent the 2nd yarn combination, make complex yarn, this complex yarn is carried out woven or knitting, make woven or knitted fabric, then with acid from this woven or knitted fabric dissolving remove the 2nd yarn, make the cloth and silk of 100% goat cashmere.But, its retractility deficiency of 100% goat cashmere cloth and silk that obtains by this method, and to remove the 2nd yarn with acid, the deterioration of residual yarn takes place easily.

Patent documentation 1: TOHKEMY 2001-131838 communique (claim 1, paragraph [0027])

Patent documentation 2: Japanese kokai publication hei 11-241269 communique (claim 1)

Patent documentation 3: European patent 1061162B1 communique (claim 1)

Summary of the invention

The object of the present invention is to provide the composite twist yarn and the manufacture method thereof of high scalability, this composite twist yarn has high yarn strength, carry out the woven or knitting problems such as broken string that also can not take place with high-speed weaving machine or knitting machine, can successfully make woven or knitted fabric (cloth and silk) with high scalability; The present invention also provides woven or pin woven or knitted fabric or the cloth and silk that uses this composite twist yarn to obtain.

Other purpose of the present invention is to provide high scalability composite twist yarn and manufacture method thereof, this composite twist yarn is less to fluff, also can be well woven or knitting even in warping, omit the starching processing, and outward appearance, sense of touch (flexibility), gas permeability, mechanical property are good, can make woven or pin woven or the knitted fabric or the cloth and silk of light weight; The present invention also provides woven or pin woven or knitted fabric or the cloth and silk that uses this composite twist yarn to obtain.

Another purpose of the present invention is to provide composite twist yarn and manufacture method thereof, this composite twist yarn does not need to carry out selecting of raw cotton etc., can use the staple fibre yarn of natural fabric system, the staple fibre yarn of synthetic fiber system, the various staple fibre yarns such as staple fibre yarn of semisynthetic fibre system, and also can be with the high yield correspondence for the many kinds of small batch; The present invention also provides woven or pin woven or knitted fabric or the cloth and silk that uses this composite twist yarn to obtain.

Another object of the present invention is to provide composite twist yarn and manufacture method thereof, this composite twist yarn can be made with the ramuscule number that existing twine or cladded yarn are difficult to make; The present invention also provides woven or pin woven or knitted fabric or the cloth and silk that uses this composite twist yarn to obtain.

Another purpose of the present invention is to provide composite twist yarn and manufacture method thereof, even this composite twist yarn does not use stretch yarn such as polyurethane stretch yarn, also can make and have high scalability, also excellent woven of characteristics such as light weight, flexibility, feel or pin is woven or knitted fabric or cloth and silk; The present invention also provides woven or pin woven or knitted fabric or the cloth and silk that uses this composite twist yarn to obtain.

The inventor has carried out deep research for solving above-mentioned problem, found that: use staple fibre yarn with specific ratio, stretch yarn and three kinds of yarns of water-soluble yarn of elongation, replace the twisted of staple fibre yarn and two kinds of yarns of polyurethane stretch yarn with this, and with the sth. made by twisting of staple fibre yarn to opposite sth. made by twisting to three kinds of yarn twisteds, and the ratio of the twisting count when making the twisting count of staple fibre yarn and three kinds of yarns of twisted is in particular range, then can successfully make and have high yarn strength, use high-speed weaving machine or knitting machine to carry out the woven or knitting problem such as broken string that also can not take place, have the woven or knitted fabric of high scalability, thereby finished the present invention.Also find: use staple fibre yarn and water-soluble yarn with specific ratio, and with the sth. made by twisting of staple fibre yarn to opposite sth. made by twisting to two kinds of yarn twisteds, and make the twisting count of staple fibre yarn and the ratio of the twisting count during with both yarn twisteds in particular range, also can have high scalability even can make ELASTANE YARNS such as not using the polyurethane stretch yarn, also excellent woven of characteristics such as light weight, flexibility, feel or pin is woven or knitted fabric or cloth and silk, thus the present invention finished.

That is, composite twist yarn of the present invention is with the composite twist yarn of staple fibre yarn and water-soluble yarn twisted at least, the sth. made by twisting of composite twist yarn to the sth. made by twisting of staple fibre yarn to opposite, and satisfy following necessary condition (1) or (2).

(1) twisting count of composite twist yarn is 1.3-3 times with respect to the twisting count of staple fibre yarn, and the ratio of staple fibre yarn and water-soluble yarn (weight ratio) is staple fibre yarn/water-soluble yarn=20/80-98/2.

(2) twisted is stretched to 2-5 stretch yarn doubly again, and the twisting count of composite twist yarn is 0.3-3 times with respect to the twisting count of staple fibre yarn, the ratio (weight ratio) of staple fibre yarn and above-mentioned stretch yarn is staple fibre yarn/stretch yarn=50/50-99.9/0.1 simultaneously, and the ratio (weight ratio) of the total amount of staple fibre yarn and stretch yarn and water-soluble yarn is the total amount/water-soluble yarn=30/70-99/1 of staple fibre yarn and stretch yarn.

Satisfy in the composite twist yarn of above-mentioned necessary condition (2), stretch yarn can be a polyurethane stretch yarn for example.And based on the weight of composite twist yarn, the ratio of staple fibre yarn can be that the ratio of 20-98 weight %, stretch yarn can be that the ratio of 0.5-20 weight % and water-soluble yarn can be about 1-70 weight %.Above-mentioned water-soluble yarn for example can be water miscible filament yarn.

The present invention also comprises the method for making above-mentioned composite twist yarn, and this method is with staple fibre yarn and water-soluble yarn twisted at least, makes composite twist yarn, is wherein twisting with the fingers twisted composite twist yarn in the opposite direction with staple fibre yarn.This method is to satisfy the manufacture method of the composite twist yarn of above-mentioned necessary condition (1), also can be with staple fibre yarn and water-soluble yarn doubling, staple fibre yarn and water-soluble yarn are carried out twisted, and the twisting count that makes composite twist yarn is a 1.3-3 method doubly with respect to the twisting count of staple fibre yarn.This method still satisfies the method for the manufacturing composite twist yarn of above-mentioned necessary condition (2), also can be with staple fibre yarn, water-soluble yarn and be stretched to 2-5 ELASTANE YARNS doubling doubly, staple fibre yarn, above-mentioned ELASTANE YARNS and water-soluble yarn are carried out twisted, and the twisting count that makes composite twist yarn is a 0.3-3 method doubly with respect to the twisting count of staple fibre yarn.

The present invention also comprises the manufacture method of cloth and silk, and this method is to constitute that water-soluble yarn in the composite twist yarn of woven or knitted fabric is dissolved in the hydrophilic solvent and to remove from the woven or knitted fabric that is formed by above-mentioned composite twist yarn at least.In this method, use the woven or knitted fabric contain 10 weight % or above above-mentioned composite twist yarn, make water simultaneously as hydrophilic solvent as above-mentioned woven or knitted fabric.

The present invention also comprises the cloth and silk that is obtained by said method.

Among the present invention, use stretch yarn and three kinds of yarns of water-soluble yarn of staple fibre yarn, elongation with specific ratio, with the sth. made by twisting of staple fibre yarn to opposite sth. made by twisting to three kinds of yarn twisteds, and the ratio of the twisting count during with the twisting count of staple fibre yarn and three kinds of yarns of twisted is adjusted in the particular range, has high yarn strength thus, fluffing is few, and can suppress stretch yarn and be projected into the outside of composite twist yarn and suppress to expose.And, do not need to constitute the selecting of raw cotton of staple fibre yarn, can use the staple fibre yarn of natural fabrics such as containing cotton, fiber crops, thin,tough silk, wool, the staple fibre yarn that contains synthetic fiber, the staple fibre yarn that contains semisynthetic fibre, various staple fibre yarns such as the blending staple fibre yarn of natural fabric and synthetic fiber can obtain composite twist yarn with the various desirable fiber number of the extremely thick number of ramuscule number, and can the many kinds of good corresponding small lot.Use above-mentioned three kinds of yarns with special ratios, (particularly be stretched under the 2-5 state doubly to twisted to opposite sth. made by twisting with the sth. made by twisting of staple fibre yarn at stretch yarn, with above-mentioned three kinds of yarns with the sth. made by twisting of staple fibre yarn twisted in the opposite direction), therefore can be, successfully make composite twist yarn with excellent specific property with high yield.

Described composite twist yarn contains water-soluble yarn, and fluffing is few, and the effect of water-soluble yarn performance reinforcing, even therefore use high-speed weaving machine or knitting machine, problems such as broken string can not take place yet, handle even omit starching in warping process, can make woven or knitted fabric smoothly with high yield yet.

From the woven or knitted fabric that uses described composite twist yarn to obtain, dissolve the water-soluble yarn of removing in the composite twist yarn, then produce the slit in water-soluble yarn stripping place, be this slit of landfill, yarn produces the power that contracts, therefore woven or knitted fabric (cloth and silk) performance high scalability and strong bounce.And stretch yarn is well coated by staple fibre yarn, therefore can obtain the woven or knitted fabric (cloth and silk) of outward appearance, sense of touch, gas permeability, excelling in weight lightness.

Among the present invention, use staple fibre yarn and water-soluble yarn with specific ratio, with the sth. made by twisting of staple fibre yarn to opposite sth. made by twisting to both yarn twisteds, and the ratio of the twisting count during with the twisting count of staple fibre yarn and twisted yarn is adjusted in the specific scope, therefore staple fibre yarn not only can use the staple fibre yarn that contains wool fibre, also can use staple fibre yarn, the staple fibre yarn that contains synthetic fiber that contains natural fabric, the various staple fibre yarns such as staple fibre yarn that contain semisynthetic fibre.Can also use the manufacturing of the staple fibre yarn arbitrarily composite twist yarn of counting to thick number by ramuscule.And,, can not occur because the deterioration in time that stretch yarn such as use polyurethane stretch yarn cause because of heat or light etc. owing to do not contain stretch yarn such as polyurethane stretch yarn.

Described composite twist yarn also contains water-soluble yarn, and therefore fluffing is few, even use high-speed weaving machine or knitting machine, the also problem that can not break, and in warping, handle, also can successfully make woven or knitted fabric (cloth and silk) with high yield even omit starching.

And dissolve from the woven or knitted fabric that uses above-mentioned composite twist yarn to obtain and remove water-soluble yarn, then the yarn length of staple fibre yarn is longer than water-soluble yarn, after the dissolution process, can obtain the retractility of its length difference part.And water-soluble yarn stripping place produces the slit, is its slit of landfill, and yarn further produces the power of contraction, although therefore do not use the polyurethane stretch yarn, also can make woven or knitted fabric (cloth and silk) has high scalability.And this woven or knitted fabric (cloth and silk) has soft good sense of touch and feel, and characteristics such as outward appearance, light weight, gas permeability are also excellent.

Therefore, woven or knitted fabric (cloth and silk) of the present invention can be brought into play its above-mentioned characteristic, is effectively applied in the extensive fields such as clothes purposes, medical application, industrial materials.

The accompanying drawing summary

Fig. 1 is with the state model figure of staple fibre yarn, polyurethane stretch yarn and water-soluble yarn doubling under the state of polyurethane stretch yarn elongation among the expression embodiment 4.

Fig. 2 is the shape mode figure of the composite twist yarn that obtains among the embodiment 4 (3) of expression.

Fig. 3 is the shape mode figure that expression forms the composite twist yarn of the grey cloth after the hot water treatment of gained among the embodiment 4 (6).

The specific embodiment

Below the present invention is described in detail

[composite twist yarn]

Composite twist yarn of the present invention comprises staple fibre yarn and water-soluble yarn at least.Composite twist yarn of the present invention can also comprise three kinds of yarns that added stretch yarn.

(staple fibre yarn)

Constituting the staple fibre yarn of composite twist yarn so long as got final product by the fibroplastic staple fibre yarn that is not dissolved in water (hot water), be not particularly limited, can be any form of synthetic fiber, semisynthetic fibre, regenerated fiber, natural fabric.The example of synthetic fiber has: polyester fiber (dacron fibre, the polytrimethylene terephtalate fiber, the poly fiber, aromatic polyester fibers such as PEN fiber etc.), polyamide-based fiber (polyamide 6, polyamide 66, polyamide 11, polyamide 12, polyamide 6 10, polyamide 6 12 series fibers such as aliphatic polyamide such as grade, alicyclic polyamide-based fiber, benzenedicarboxamide between polyphenylene, polyhexamethylene terephthalamide, aromatic polyamides series fibers such as polyparaphenylene terephthalamide etc.), polyolefin series fiber (polyethylene, poly-C such as polypropylene _2-4Olefin(e) fibre etc.), acrylic fibers (acrylonitrile-vinyl chloride copolymer etc. have the acrylic fibre of acrylonitrile unit etc.), the insoluble vinylal fibre of water (hot water) (ethylene-ethenol system copolymer fibre etc.), polyvinyl chloride fiber (polyvinyl chloride, vinyl chloride vinyl acetate copolymer, the fiber of vinyl chloride-acrylonitrile copolymer etc.), vinylidene fibre (vinylidene chloride-vinyl chloride copolymer, fibers such as vinylidene chloride-vinyl acetate copolymer) etc.

Semisynthetic fibre for example has acetic ester fibers such as triacetate fiber etc.Regenerated fiber for example has: artificial silk, Pori's nosik, copper ammonia fibre, lyocell (for example registrar entitling " Tencel " etc.) etc.Natural fabric for example has cotton, wool, thin,tough silk, fiber crops etc.Can also use inorfils such as glass fibre, carbon fiber, metal fibre.

These fibers can be separately or with two kinds or above being used in combination.Particularly staple fibre yarn is not limited to be selected from single staple fibre yarn of above-mentioned fiber, can be the mixed fine staple fibre yarn that comprises two kinds or above fiber.These fibers can be according to composite twist yarn and the suitably selections such as purposes of using the woven or knitted fabric of its manufacturing.Fiber commonly used for example has: polyamide-based fiber, polyester fiber.Synthetic fiber such as acrylic fibers, semisynthetic fibres such as acetic ester fiber, regenerated fibers such as artificial silk, copper ammonia fibre, natural fabrics such as cotton, wool, thin,tough silk etc.When particularly using stretch yarn (polyurethane stretch yarn etc.) as essential composition, by with natural fabric combination such as cotton, can obtain the feel or the outward appearance of natural fabric.

Staple fibre yarn can be monofilament, mariages or 3 or the above also arbitrary form of twisted filament.Among the present invention, " twisting count of staple fibre yarn " is meant last twisting count of twisting when making staple fibre yarn.When for example staple fibre yarn is monofilament, be meant the twisting count that in spinning, is applied when making monofilament; During for mariages, be meant when making mariages twisting count with two rhizoid twisteds; When being 3 or above and twisted filament, be meant make and during twisted filament with the twisting count of 3 or above silk twisted.

The twisting count of staple fibre yarn is not particularly limited, with twisting count be made as T (unit: inferior/2.54cm), yarn count is made as S (unit :), then with $K=T/\sqrt{S}$ Represented twist factor K is that the staple fibre yarn about 1.5-5 (preferred 2-4, further preferred 2.5-3.5) is considered preferred at the quality stability of staple fibre yarn, the productive rate in the composite twist yarn manufacturing, the aspects such as purchase easiness of staple fibre yarn.

When staple fibre yarn is mariages or 3 or above and twisted filament, consider from the aspects such as purchase easiness of the operability of the productive rate of twisted filament, silk, feel, staple fibre yarn, preferably the last in the mill sth. made by twisting of these staple fibre yarns to mariages or and twisted filament make in the sth. made by twisting of employed monofilament to opposite.Further the last twisting count of preferred staple fibre yarn (mariages or and the twisting count of twisted filament) be mariages or and twisted filament make in the 0.3-0.9 of twisting count of employed monofilament doubly about (preferred 0.4-0.8 times).

As the number of staple fibre yarn, yarn count is that aspect such as the purchase easiness, the market demand of the 5-200 smoothness of propping up the yarn about (preferred 7-150 props up, further preferred 10-100 prop up) and making at composite twist yarn, staple fibre yarn is preferred.

(water-soluble yarn)

Water-soluble yarn is not particularly limited so long as hydrophilic solvent is had dissolubility get final product, particularly preferably under the atmospheric pressure, under the temperature below the boiling temperature (about 100 ℃) of water to the yarn of water (hot water) dissolving.In the woven or knitted fabric that is obtained by the composite twist yarn that contains described water-soluble yarn, can easily dissolve by hydrophilic solvents such as water and remove water-soluble yarn etc., operability etc. are also excellent.As water-soluble yarn, when placing 30 minutes in the hot water that water-soluble yarn itself is immersed in 80 ℃ or above (particularly 90 ℃ or more than) separately, with respect to the weight of the water-soluble yarn before soaking, there are 85 weight % or above (particularly 95 weight % or more than) to be dissolved in the water-soluble yarn (water-insoluble residue is lower than 15 weight %, particularly is lower than the water-soluble yarn of 5 weight %) of above-mentioned hot water.The water-soluble of water-soluble yarn is low, even then water is handled the woven or knitted fabric that uses the composite twist yarn manufacturing, can not fully dissolve the water-soluble yarn of removing in the composite twist yarn, be difficult to make woven or knitted fabric has sufficient retractility or light weight etc.In addition, when using the polyurethane stretch yarn, staple fibre yarn reduces the covering property of polyurethane stretch yarn.

Satisfy above-mentioned water-soluble as long as constitute the fiber of water-soluble yarn, be not particularly limited, for example can use the fiber that comprises water-soluble resin.Water-soluble resin for example has: cellulose-based resin (hydroxyl C such as Carboxymethyl Cellulose _1-3Alkylcellulose etc.), polyethylene base system resin (PVP, polyvingl ether, polyvinyl alcohol, Pioloform, polyvinyl acetal etc.), acrylic acid series copolymer or its alkali metal salt (copolymer etc. of unit that contains the acrylic monomers such as (methyl) acrylate of (methyl) acrylic acid or hydroxyl), water-soluble polyamide based resin (polyamide with polyoxyethylene unit, imported the polyamide of sulfonic group or hydroxyl etc. etc.), water-soluble polyester is the resin (polyester with polyoxyethylene unit, or importing has the polyester of sulfonic group or amino etc. etc.) etc.These water-soluble resins can be separately or with two kinds or above being used in combination.

Preferably polyethylene base system resin wherein is particularly from fiber strength, highly dissoluble, biological degradability to water (hot water), the property bought equal angles easily, preferred water-soluble polyvinyl alcohol resin.Usually the heat decomposition temperature and the melt initiation temperature degree of water-soluble polyvinyl alcohol resin are approaching, can not carry out melt-spun.Therefore among the present invention, preferred use can carry out the water-soluble poval of melt-spun, for example the degree of polymerization is reduced to about 200-800 (particularly 250-500) and with 3-20mol% (particularly 3-15mol%) about olefines (C such as ethene particularly _2-10Alpha-olefin etc.) polyvinyl alcohol resin of copolymerization.The fiber that comprises water-soluble polyvinyl alcohol resin for example has commercially available with water-soluble vinylon etc.

Water-soluble yarn is so long as water-soluble getting final product can be that staple fibre yarn also can be a filament yarn.Consider preferred filament yarn from hydrophilic solvent, dissolving the angle of removing easily.Woven or the knitted fabric that then uses the low composite twist yarn of the blending ratio of water-soluble yarn to obtain uses filament yarn, even also can be removed water-soluble yarn rapidly in hydrophilic solvents such as water.

The fiber number of water-soluble yarn for example is about 15-200dtex, preferred 20-150dtex, further preferred 25-100dtex.The fiber number of water-soluble yarn is in this scope, and then the productive rate height can easily carry out twisted with other yarns such as staple fibre yarns.Can also improve the brute force of composite twist yarn, reduce the spinning fluffing.When can easily remove in addition, can also after removing, dissolving make grey cloth have retractility by the hydrophilic solvent dissolving.During with staple fibre yarn and the combination of polyurethane stretch yarn, can also improve covering property to the polyurethane stretch yarn.

Among the present invention, the yarn that is used for removing in the composite twist yarn (making the yarn of removing behind woven or the knitted fabric) does not use dissolving or decomposes in the yarn of alkali or acid, and be to use the yarn (water-soluble yarn) that is dissolved in hydrophilic solvents such as water, its reason is: when removing the composite twist yarn that forms woven or knitted fabric a part of with alkali or acid, the staple fibre yarn or the polyurethane stretch yarn that constitute composite twist yarn might produce rotten or decomposition, and hydrophilic solvents such as water (particularly water) are when handling, and staple fibre yarn or polyurethane stretch yarn can not produce rotten or decompose.By using described water-soluble yarn, the various staple fibre yarns that can use wide range are as the staple fibre yarn that constitutes composite twist yarn.Promptly, among the present invention, constitute the staple fibre yarn of composite twist yarn so long as be not dissolved in the yarn of hydrophilic solvent such as water and get final product, even the yarn that easily dissolves or decompose in alkali or acid also can use, the kind or the range of choice of the staple fibre yarn of formation composite twist yarn are wide, can make kind, characteristic, the feel of the woven or knitted fabric that is formed by composite twist yarn varied and colorful then.Particularly use the fiber comprise water-soluble polyvinyl alcohol resin as water-soluble yarn,, the waste liquid after its dissolving can be decomposed by microorganism etc. and to remove by its high biological degradability.

(stretch yarn)

Stretch yarn can be the yarn that comprises rubber constituent (for example diene series rubber, acrylic rubber, acrylic acid series latex, ethene-alpha-olefin based copolymer, ethylene-alpha-olefin-polyene copolymer, polyurethane rubber, silicon rubber, butyl rubber etc.) or elastomer (for example styrene series thermoplastic elastomer, olefin-based thermoplastic elastomer (TPE), polyester based thermoplastic elastomer, polyurethane series thermoplastic elastomer (TPE), polyamide-based thermoplastic elastomer (TPE) etc.) etc., the optimization polyurethane stretch yarn.

The polyurethane stretch yarn is commonly referred to as Spandex, comprises the rubber-like polyurethane series resin.The rubber-like polyurethane series resin for example can be the ammonia ester based polymer that is obtained by polyol component and the reaction of polyisocyanate composition.

Polyol component can preferably use polyether polyol (polyoxygenated C such as polyethylene glycol or polytetramethylene glycol ether for example _2-4Enediol etc.) or polyester polyol (C such as butanediol for example _2-6C such as aklylene glycol and adipic acid _4-12The polyester-diol that the aliphatic dicarboxylic acid reaction obtains etc.) etc.These polyol components can be separately or with two kinds or above being used in combination.

Polyisocyanate can preferably be used aliphatic polymeric isocyanate [hexamethylene diisocyanate (H DI) for example, trimethyl hexamethylene diisocyanate aliphatic vulcabonds such as (TMDI) etc.], alicyclic polymeric isocyanate [isophorone diisocyanate (IPDI) for example, the hydrogenation of benzene dimethylene diisocyanate, alicyclic diisocyanates such as two (phenyl isocyanate base) methane of hydrogenation etc.], aromatic poly-isocyanate [toluene di-isocyanate(TDI) (TDI) for example, XDI (XDI), two (phenyl isocyanate base) methane (MDI) etc.] etc.These polyisocyanate can be separately or with two kinds or above being used in combination.

It is that resin carries out the polyurethane stretch yarn commonly used that dry spinning, wet type spinning or reaction spinning obtain that the polyurethane stretch yarn can use these elastic polyurethanes.The polyurethane stretch yarn can be a monofilament, also can be multifilament.The fiber number of polyurethane stretch yarn for example is 10-350dtex, and preferred 15-200dtex is about further preferred 20-150dtex.The fiber number of polyurethane stretch yarn is in this scope, and then the twisted of staple fibre yarn and water-soluble yarn is easy, and after the water-soluble yarn in having dissolved woven or knitted fabric, the covering property of staple fibre yarn improves, and grey cloth can have high scalability.

(composite twist yarn that staple fibre yarn and water-soluble yarn twisted form)

In the composite twist yarn of the present invention, during with staple fibre yarn and water-soluble yarn twisted, both ratios (weight ratio) are staple fibre yarn/water-soluble yarn=20/80-98/2, and preferred 30/70-95/5 is about further preferred 50/50-90/10.By with the proportion control of two kinds of yarns in above-mentioned scope, then can obtain excellent composite twist yarn such as woven or knitting property, yarn strength, twisting stability.And, can easily dissolve the water-soluble yarn of removing in the composite twist yarn by hydrophilic solvent, for landfill is removed slit behind the water-soluble yarn, convergent force can effectively play a role in woven or knitted fabric, can improve retractility, after simultaneously removing water-soluble yarn in the woven or knitted fabric that forms by composite twist yarn, also raisings such as the feel of woven or knitted fabric (cloth and silk), sense of touch, light weight, gas permeability.If the ratio of water-soluble yarn is very few, decline such as the retractility of then woven or knitted fabric (cloth and silk), light weight, gas permeability, hardening, feel variation.And the ratio of water-soluble yarn is too much, and the morphological stability of then having removed the woven or knitted fabric (cloth and silk) of water-soluble yarn reduces, and is easy to generate slippage.

Consider from restriction, the qualitative control aspect of the yarn tube number of twisting machine, radical (yarn radical) about staple fibre yarn and water-soluble yarn, staple fibre yarn is a 1-3 root (preferred 1-2 root, particularly 1), and water-soluble yarn is a 1-3 root (preferred 1-2 root, particularly 1), usually with 1 staple fibre yarn and 1 water-soluble yarn twisted, form composite twist yarn.

In the described composite twist yarn, the sth. made by twisting of composite twist yarn to (sth. made by twisting when staple fibre yarn and water-soluble yarn twisted to) (following the twisting of composite twist yarn can be called " retwist ") for opposite to (the following twisting that will constitute the staple fibre yarn of composite twist yarn is called " first twist ") with the sth. made by twisting of the staple fibre yarn that constitutes composite twist yarn, and the twisting count of composite twist yarn be B (unit: inferior/rice) to the ratio (B/A) of the twisting count A (unit: inferior/rice) of staple fibre yarn for example 1.3-3 (be the retwist number be first twisting count 1.3-3 doubly), preferred 1.4-3, the scope about further preferred 1.5-2.

Among the present invention, " twisting count of composite twist yarn " (twisting count of retwist) is meant the twisting count with staple fibre yarn and water-soluble yarn (perhaps staple fibre yarn, water-soluble yarn and stretch yarn) twisted, according to the setting twisting count value in the actual twisting process.

From the twist torque that reduces twist yarn, improve the feel equal angles and consider, also be in the past with the sth. made by twisting of retwist to carrying out to opposite with the sth. made by twisting of first twist, but in the past the twisting count of retwist be first twist twisting count 0.3-0.9 doubly about, the twisting count of retwist lacks than the twisting count of first twist usually.And in the composite twist yarn of the present invention, the twisting count of retwist (the twisting count A of composite twist yarn) is Duoed than the twisting count (the twisting count B of staple fibre yarn) of first twist and is limited in the specific scope, and the twisting count of this point and in the past retwist is more different fully than the technology that the twisting count of first twist lacks.

In the above-mentioned composite twist yarn, the twisting count of retwist be first twist twisting count 1.3-3 doubly about, when therefore making composite twist yarn, when carrying out and twist with the fingers (when carrying out retwist), the morphological stability (stability of twisting) that keeps composite twist yarn, retwist is the backtwisting direction action of twisting with the fingers (first twist) at staple fibre yarn simultaneously.Therefore, during retwist, the length of yarn of staple fibre yarn is elongated, and water-soluble yarn is twisted, and length of yarn shortens.Therefore, the further twisting even the twisting count of staple fibre yarn is started from scratch is also keeping the relation of the yarn length of staple fibre yarn than the length of yarn length of water-soluble yarn.As a result, can woven well or knitting composite twist yarn, when removing water-soluble yarn with water-soluble from gained the woven or knitted fabric, retractility increases, and has soft feel, can obtain the cloth and silk of light weight, gas permeability excellence.

If the twisting count of the relative first twist of twisting count of the retwist of composite twist yarn is lower than 0.8 times, then for making composite twist yarn and when twisting with the fingers, the backtwisting of staple fibre yarn is insufficient, and the twisting of water-soluble yarn is also insufficient, remove water-soluble yarn even water dissolves from the woven or knitted fabric that uses such composite twist yarn to make, can not obtain the cloth and silk of retractility.In addition, if the twisting count of the relative first twist of twisting count of the retwist of composite twist yarn is 0.8 times or above but when being lower than 1.3 times, though when making composite twist yarn, carried out the backtwisting of staple fibre yarn, but the twisting deficiency of composite twist yarn itself, therefore woven or knitting property is low, after water-soluble yarn is removed in dissolving the woven or knitted fabric from gained with hydrophilic solvent, and the twisting deficiency of residual staple fibre yarn, can not obtain the cloth and silk of form stable, if for example stretch then yarn is decoherenced.

If the twisting count of retwist surpasses 3 times of twisting count of first twist, then the twisting operation during retwist (be used for making composite twist yarn and twist with the fingers operation) produces problems such as broken string, the productive rate reduction of composite twist yarn, and the intensity of gained composite twist yarn also descends.And the twist torque of composite twist yarn is strong excessively, and the productive rate in the woven or knitting process also reduces.

The kind of the twisting machine for staple fibre yarn and water-soluble yarn twisted the time is not particularly limited, and for example can use twisting machine commonly used in the past such as two-for-one twister, ring doubling frame, uptwister.

(composite twist yarn that staple fibre yarn, water-soluble yarn and stretch yarn twisted are formed)

During with staple fibre yarn, water-soluble yarn and stretch yarn twisted, the ratio of each yarn can suitably be adjusted according to the purposes of composite twist yarn or woven or knitted fabric, the kind of staple fibre yarn, the kind of water-soluble yarn etc.

The ratio of staple fibre yarn and stretch yarn (weight ratio) for example is about staple fibre yarn/stretch yarn=50/50-99.9/0.1, preferred 70/30-99.5/0.5, further preferred 80/20-99/1 (particularly 90/10-97/3).

The ratio (weight ratio) of the total amount of staple fibre yarn and stretch yarn and water-soluble yarn for example is about the total amount/water-soluble yarn=30/70-99/1 of staple fibre yarn and stretch yarn, preferred 50/50-97/3, further preferred 60/40-95/5 (particularly 70/30-90/10).

Common weight based on composite twist yarn; the ratio of staple fibre yarn, stretch yarn and water-soluble yarn is: the ratio of staple fibre yarn is 20-98 weight % (preferred 35-95 weight %); the ratio of stretch yarn is 0.5-20 weight % (preferred 0.8-15 weight %), and the ratio of water-soluble yarn is about 1-70 weight % (preferred 4-55 weight %).

The ratio of staple fibre yarn, stretch yarn and water-soluble yarn then can suppress the outside that staple fibre yarn was given prominence to and suppressed to be exposed to stretch yarn in above-mentioned scope, can obtain excellent composite twist yarn such as woven or knitting property or brute force.And from the woven or knitted fabric that uses described composite twist yarn to obtain, can easily in hydrophilic solvent, dissolve the water-soluble yarn of removing in the composite twist yarn, the slit that the while landfill has been removed water-soluble yarn, this convergent force plays a role in woven or knitted fabric, retractility, feel woven or knitted fabric (cloth and silk) improve, and staple fibre yarn is coated fully to stretch yarn.

The radical of staple fibre yarn, stretch yarn and water-soluble yarn (yarn radical) is considered from restriction, the qualitative control angle of the yarn tube radical of twisting machine, staple fibre yarn is 1-3 root (a preferred 1-2 root), stretch yarn is 1-2 root (preferred 1), water-soluble yarn is 1-2 root (preferred 1), usually 1 staple fibre yarn, 1 stretch yarn and 1 water-soluble yarn twisted is formed composite twist yarn.

In the described composite twist yarn, the sth. made by twisting of composite twist yarn to (with the sth. made by twisting of staple fibre yarn, stretch yarn and water-soluble yarn twisted to) (retwist) opposite to (first twist) with the sth. made by twisting of the staple fibre yarn that constitutes composite twist yarn.The sth. made by twisting that makes retwist to the sth. made by twisting of first twist to opposite, then in the manufacturing of composite twist yarn, retwist makes the twisting of staple fibre yarn (first twist) the direction motion of backtwisting slightly, this backtwisting makes the yarn length of staple fibre yarn elongated a little, makes to twist under the state of elongated staple fibre yarn covered type elastic yarn of yarn or water-soluble yarn.Therefore, make woven or knitted fabric, the water-soluble yarn of dissolving after, staple fibre yarn can better carrying out to the coating of stretch yarn (polyurethane stretch yarn etc.).

In the above-mentioned composite twist yarn, the twisting count of composite twist yarn (retwist number) be staple fibre yarn twisting count (first twisting count) 0.3-3 doubly, preferred 0.5-2.5 doubly, further preferred 0.8-2.5 doubly about.

The twisting count of first twist is excessive, and then twisting stability reduces, and the brute force of composite twist yarn occurs inhomogeneous, and the inhibition of fluffing is descended.In addition since staple fibre yarn to the coating deficiency of stretch yarn and water-soluble yarn etc., woven or knitting property is reduced easily, and in the twisting process of making composite twist yarn, the backtwisting of first twist is insufficient, make woven or knitted fabric and dissolve water-soluble yarn after, staple fibre yarn is to the coating deficiency of stretch yarn.

The twisting count of retwist is excessive, then in the twisting process when carrying out retwist, problems such as broken string takes place, and the productive rate of composite twist yarn reduces, and the intensity of gained composite twist yarn also descends.And, because the twist torque of the composite twist yarn that twisting causes is strong excessively, the situation that productive rate reduces appears in woven or knitting process.

In containing the composite twist yarn of stretch yarn, " twisting count of composite twist yarn " (twisting count of retwist) is meant in the elongation multiplying power with regulation and makes under the state of stretch yarn elongation, twisting count during with staple fibre yarn, water-soluble yarn and stretch yarn twisted, actual setting twisting count according to twisting process.That is, the twisting count of retwist is not the stretch yarn twisting count of the composite twist yarn under the elongation state (being contracted to the state of original length) not at first.

Described composite twist yarn can followingly be made: stretch yarn is stretched to 2-5 doubly, preferred 2.5-4.5 doubly, under the state of further preferred 2.5-4 about doubly, staple fibre yarn, stretch yarn and three kinds of yarns of water-soluble yarn carrying out twisted (carrying out retwist) with the sth. made by twisting of staple fibre yarn to (first twist) opposite direction, can be made thus smoothly.Here, the elongation multiplying power of stretch yarn is meant the elongation multiplying power with respect to the length of the stretch yarn that does not apply tension force.

Among the present invention, by making retwist under the state of stretch yarn elongation, the woven or knitted fabric that dissolving is removed behind the water-soluble yarn has high scalability, particularly has excellent resilience.On the other hand, if the elongation multiplying power of stretch yarn is too small during retwist, then the retractility of composite twist yarn and woven or knitted fabric reduces, if it is excessive, then the convergent force of stretch yarn is strong excessively, frequently breaks when twisting, is difficult to obtain composite twist yarn, even obtained composite twist yarn, its woven or knitting productive rate also descends.

The kind of the twisting machine when twisted staple fibre yarn, stretch yarn and water-soluble yarn is not particularly limited the twisting machine that for example can use two-for-one twister, ring doubling frame, uptwister etc. commonly used in the past.

[woven or knitted fabric (cloth and silk) and manufacture method thereof]

Woven or knitted fabric (cloth and silk) of the present invention is to use above-mentioned composite twist yarn to obtain, and above-mentioned composite twist yarn has twist torque usually.Can not produce obstacle if composite twist yarn has twist torque yet, then need not to reduce the manufacturing that twist torque can be directly used in composite twist yarn woven or knitted fabric woven or knitting process.If woven or knitting process are produced obstacle owing to have twist torque, then preferably implement heat treatment, reduce twist torque.The heat treatment temperature that is used to reduce twist torque can be according to the kind of the staple fibre yarn that constitutes composite twist yarn, water-soluble yarn, stretch yarn, and the twist torque intensity of composite twist yarn etc. are suitably determined.Among the present invention, by using above-mentioned composite twist yarn, can make woven or knitted fabric with high scalability.

Woven or knitted fabric (cloth and silk) of the present invention is not particularly limited its kind or organising content etc., for example can be woven fabric (plain weave, twill, satin weave etc.), knitted fabric (machinery braiding, bearded needle braiding, large knitting needle braiding, Afghan crocheting, the braiding of lace mesh etc.) etc.Therefore the yarn strength height of composite twist yarn of the present invention for example promptly uses at a high speed the loom or the knitting machine of (for example woven speed or knitting speed are 0.05 meter/minute or more than) to make woven or knitted fabric, problems such as broken string can not take place yet, the productive rate height.

Woven or knitted fabric of the present invention uses above-mentioned composite twist yarn manufacturing at least, can or the kind of knitted fabric or usage ratio that purposes (desired telescopic level etc.) regulate above-mentioned composite twist yarn woven according to target.Composite twist yarn with respect to the usage ratio of woven or knitted fabric can be: with respect to the gross weight of woven or knitted fabric, for example composite twist yarn is 10 weight % or above (for example 10-100 weight %), preferred 20 weight % or above (for example 20-100 weight %) are further about preferred 25 weight % or above (for example 25-100 weight %).As described later, water-soluble yarn is removed with hydrophilic solvent extraction, and the aforementioned proportion of the composite twist yarn in the woven or knitted fabric is the value that comprises water-soluble yarn.The ratio of composite twist yarn is low excessively, even then remove water-soluble yarn, also is difficult to obtain the high cloth and silk of retractility.

Among the present invention, by with hydrophilic solvent from removing water-soluble yarn in the composite twist yarn, the cloth and silk that can obtain having high scalability with extraction the woven or knitted fabric of composite twist yarn manufacturing.Hydrophilic solvent has water, in addition also have alcohols (methyl alcohol, ethanol, isopropyl alcohol etc.), ketone (acetone etc.), ethers (oxolane etc.), cellosolve class (methyl cellosolve, ethyl cellosolve etc.), carbitol class (carbitol, diethylene glycol dimethyl ether etc.) etc.These hydrophilic solvents can be separately or with two kinds or above being used in combination.In these hydrophilic solvents, preferred water, C such as ethanol _1-3Alcohols, ketones such as acetone, the mixed solvents of water and other hydrophilic solvent etc. make water usually.

The method of extraction (dissolving is removed) water-soluble yarn is not particularly limited, and from remove the angle consideration of water-soluble yarn effectively with easy method, can be the method that is immersed in the hydrophilic solvent of high temperature.When making water as hydrophilic solvent, extraction water can be neutral, also can be alkali or acidic aqueous solution.Can also be the aqueous solution that is added with surfactant etc.

The extraction treatment temperature can be according to the kind of the fiber that constitutes water-soluble yarn or to adjustings such as the form of the solubility of solvent, yarn or fiber numbers, when for example using hot water that the water-soluble yarn that comprises the water-soluble polyvinyl alcohol fiber is extracted, for example can be 40-120 ℃, preferred 50-110 ℃, about further preferred 60-100 ℃ (particularly 70-100 ℃).By under said temperature, handling, can be in the short time and promptly from woven or knitted fabric, remove water-soluble yarn.Treatment temperature is low excessively, the extractibility deficiency of water-soluble yarn then, and productive rate reduces.Treatment temperature is too high, and then the dissolution time of water-soluble yarn is extremely short, and quality woven simultaneously or knitted fabric also descends easily.

The ratio of hydrophilic solvent with respect to woven or knitted fabric be 2 times (weight basis) or more than, for example be 2-1000 doubly, preferred 3-100 doubly, further preferred 5-50 doubly about.The amount of hydrophilic solvent is very few, then water-soluble yarn remove insufficient.If it is insufficient that extraction is removed, also can use the new hydrophilic solvent that does not contain water-soluble yarn in hydrophilic solvent is bathed, to extract once more and remove water-soluble yarn.

About the extraction processing time, can suitably regulate according to purpose or employed device, treatment temperature, but consider production efficiency, stability, gained is woven or the quality parameter of knitted fabric etc., it for example can be 1-300 minute, preferred 5-200 minute, about further preferred 10-100 minute (particularly 15-60 minute).

After extraction was handled to water-soluble yarn, woven or knitted fabric (cloth and silk) can air dry, but considers from the feel or the gas permeability that improve cloth and silk, preferably passes through heat drying.Baking temperature can suitably be selected according to the kind of the fiber that constitutes woven or knitted fabric etc., for example can be 60 ℃ or more than, preferred 80-300 ℃, about further preferred 100-200 ℃ (particularly 120-160 ℃).For example be 0.5 minute-24 hours drying time, preferred 1 minute-10 hours, and about preferred especially 3 minutes-1 hour.

Consider that from the fluency of production process, quality perspective woven or knitted fabric preferably the processing of this above-mentioned hydrophilic solvent was carried out before woven or dyeing knitted fabric or woven or knitted fabric are adhered to the resin operation.If dyeing process or adhere in the resin operation or these operations after carry out water-soluble yarn extraction handle, then dyeing process or resin are adhered to operation and produce obstacle, can not fully carry out removing of water-soluble yarn simultaneously.

Can contain additives such as stabilizing agent (heat stabilizer, ultra-violet absorber, light stabilizer, antioxidant etc.), particulate, colouring agent, antistatic additive, fire retardant, plasticizer, lubricant, crystallization rate delayed-action activator as required in the woven or knitted fabric (cloth and silk) of the present invention.These additives can be separately or with two kinds or above being used in combination.These additives can be contained in each yarn of constituting composite twist yarn, composite twist yarn, woven or knitted fabric arbitrarily wherein.

Industrial applicability

The above-mentioned cloth and silk that obtains has high scalability and soft good sense of touch, and light weight, gas permeability etc. are also excellent.Therefore bring into play these character, can effectively utilize in for example clothes (for example motion dress material, underwear, wadding etc.), medical material (Elastic bandage etc.), vehicle with material (vehicle inner decoration material etc.), industrial materials (conveyer belt with material etc.) etc.

Embodiment

Wait by the following examples and specify the present invention, but the present invention is not subjected to any qualification of following example.In embodiment and the comparative example, the following mensuration of percentage elongation of fabric (calicut).

[percentage elongation of calicut]

(1) warp-wise that cuts grey cloth from following example in the calicut of making respectively is of a size of warp-wise that 15cm (length), broadwise be of a size of the test film (a) of 2.5cm (width) and grey cloth and is of a size of the test film (b) that 2.5cm (width), broadwise are of a size of 15cm (length).

End central authorities (central authorities of width) of the length direction of the test film (a) that (2) cuts in above-mentioned (1) apply the weight of 1g, make the end that has applied weight downward, test film is vertically sling, under this state, placed 1 minute, measure the length (La of test film this moment (a) ₁).

Then, above-mentioned 1g weight is removed from the end of test film (a), the weight of the substitute is 300g puts on same position, vertically slings, and places 3 minutes under this state, measures the length (La of test film this moment (a) ₂) (cm), obtain calicut warp-stretch rate (%) by following numerical expression (i).

Warp-stretch rate (%)={ (La ₂-La ₁)/La ₁} * 100 (i)

End central authorities (central authorities of width) of test film (b) length direction that (3) cuts in above-mentioned (1) apply the weight of 1g, make the end that has applied weight downward, test film is vertically sling, under this state, placed 1 minute, measure the length (Lb of test film this moment (b) ₁).

Then, remove the weight of above-mentioned 1g from the end of test film (b), the weight of the substitute is 300g puts on same position, vertically slings, and places 3 minutes under this state, measures the length (Lb of test film this moment (b) ₂) (cm), (ii) obtain the weft direction stretch rate (%) of calicut by following numerical expression.

Weft direction stretch rate (%)={ (Lb ₂-Lb ₁)/Lb ₁} * 100 (ii)

Embodiment 1

(1) (i) prepares 20 the 100% cotton staple fibre yarns that twisting count is 600 times/meter (Z sth. made by twisting) (all building weaving (strain) manufacturing, " TS20 single thread ") as staple fibre yarn.The twisting count of the every 2.54cm of this staple fibre yarn T=15.24 time, number S=20, by formula: $K=(T/\sqrt{S})$ The twist factor K that obtains is

$15.24/\sqrt{20}=15.24/4.47=3.24.$

(ii) prepare polyvinyl alcohol multifilament (56dtex) (being dissolved in the silk of 80 ℃ water) (manufacturing of (strain) Kuraray, " water-soluble vinylon ") as water-soluble yarn.

(2) 1 staple fibre yarn and 1 water-soluble yarn of preparing in above-mentioned (1) are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), carry out twisted with twisting count (retwist) 1000 times/meter (S sth. made by twisting), make composite twist yarn [ratio (B/A)=about 1.67 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(3) composite twist yarn that obtains from above-mentioned (2) cuts the yarn of specific length (1m), as the sample yarn, the retwist of this sample yarn is removed, be separated into two kinds of yarns of staple fibre yarn and water-soluble yarn, measure the weight of each yarn, obtain the ratio of each yarn in the composite twist yarn by this measurement result, above-mentioned composite twist yarn comprises 84 weight % staple fibre yarns and the water-soluble yarn of 16 weight %.

(4) composite twist yarn that obtains in the use above-mentioned (2) is as warp thread and weft yarn, and woven one-tenth is through the calicut (blending ratio of the composite twist yarn in the calicut is 100 weight %) of 25/cm, 20/cm of latitude.In the woven process, warp thread is not implemented starching and handle and promptly implement woven operation, but the problem of broken string fully takes place, can woven at high speed or knitting calicut, woven production excellence (woven speed 0.1m/ minute).

(5) calicut that obtains in above-mentioned (4) is soaked 30 minutes (bath raio (ratio of grey cloth and water)=1: 10) in 80 ℃ hot water, remove water-soluble yarn the composite twist yarn that has formed grey cloth from dissolving, then from water, take out material, 150 ℃ of dryings 2 minutes.Measure the grey cloth warp-wise obtain thus and the percentage elongation of broadwise according to the method described above, the percentage elongation of warp-wise is 20%, and the percentage elongation of broadwise is 22%, has high scalability.And this grey cloth is soft, feel is excellent, and light weight and gas permeability are also excellent.

Embodiment 2

(1) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains among the embodiment 1 (2) as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40% in the calicut) of 25/cm, 20/cm of latitude.In the woven process, warp thread is not implemented the starching processing and promptly carry out above-mentioned woven operation, problems such as broken string fully take place, but the woven or knitting calicut of high speed, woven production excellence (woven speed 0.1m/ minute).

(2) calicut that obtains in above-mentioned (1) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn of the weft yarn that forms grey cloth is removed in dissolving, then grey cloth is taken out from water, 150 ℃ of dryings 2 minutes.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the warp-stretch rate is 11%, and the weft direction stretch rate is 23%, and broadwise has high scalability.And this grey cloth is soft, the feel excellence, and light weight and gas permeability are also excellent.

Embodiment 3

(1) (i) the preparation twisting count is 40 the 100% cotton staple fibre yarns (all building weaving (strain) manufacturing, " TS40 single thread ") of 800 times/meter (Z sth. made by twisting), two these staple fibre yarns are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), with 600 times/meter (S sth. made by twisting) twisting of twisting count, make doublet cord.

(ii) prepare polyvinyl alcohol multifilament (56dtex) (being dissolved in 80 ℃ of silk (Kuraray Co., Ltd.'s manufacturing), " water-soluble vinylons " in the water) as water-soluble yarn.

(2) doublet cord (staple fibre yarn) and the water-soluble yarn prepared in above-mentioned (1) are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), with twisting count (retwist) is that 1000 times/meter (Z sth. made by twisting) carry out twisted, makes composite twist yarn [ratio (B/A)=about 1.67 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(3) from the composite twist yarn that above-mentioned (2) obtain, cut the yarn of specific length (1m), as the sample yarn, the retwist of this sample yarn is removed, to be separated into two kinds of yarns of staple fibre yarn (doublet cord) and water-soluble yarn, measure the quality of each yarn that separates respectively, obtain the ratio of each yarn in the composite twist yarn by this measurement result, above-mentioned composite twist yarn comprises 85 quality % staple fibre yarns (doublet cord) and the water-soluble yarn of 15 weight %.

(4) use 40 cotton doublet cords as warp thread, use in above-mentioned (2) and obtain composite twist yarn as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40% in the calicut) of 25/cm, 20/cm of latitude.In the woven process, warp thread is not implemented starching and handle and promptly carry out woven operation, but the problem of broken string etc. fully takes place, but the woven or knitting calicut of high speed, woven production excellence (woven speed 0.1m/ minute).

(5) calicut that obtains in above-mentioned (4) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, water-soluble yarn in the composite twist yarn that has formed grey cloth is removed in dissolving, then grey cloth is taken out from water, 150 ℃ of dryings 2 minutes.With the warp-wise of the grey cloth that obtains more than the said method mensuration and the percentage elongation of broadwise, the warp-stretch rate is 10%, and the weft direction stretch rate is 21%, and broadwise has high scalability.This grey cloth is soft in addition, and feel excellence, light weight and gas permeability are also excellent.

Comparative example 1

(1) be that the water-soluble yarn that comprises polyvinyl alcohol multifilament (56dtex) that uses among 20 the 100% cotton staple fibre yarns (all build weaving (strain) make, " TS20 single thread ") of 600 times/meter (Z sth. made by twisting) and the embodiment 1 is supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M ") with twisting count, carry out twisted with twisting count (retwist) 400 times/meter (S sth. made by twisting), make composite twist yarn [ratio (B/A)=about 0.67 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(2) composite twist yarn that obtains from above-mentioned (1) cuts the yarn of specific length (1m), as the sample yarn, the retwist of this sample yarn is removed, be separated into two kinds of yarns of staple fibre yarn and water-soluble yarn, measure the weight of each yarn that separates, obtain the ratio of each yarn in the composite twist yarn by this measurement result, this composite twist yarn comprises 84 quality % staple fibre yarns and the water-soluble yarn of 16 quality %.

(3) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains in above-mentioned (1) as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40 weight % in the calicut) (woven speed 0.1m/ minute) of 25/cm, 20/cm of latitude.

(4) calicut that obtains in above-mentioned (3) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth is removed in dissolving, then takes out grey cloth from water, 150 ℃ of dryings.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise with said method, the warp-stretch rate is 11%, and the weft direction stretch rate is 12%, and retractility is low.

Comparative example 2

(1) will be that the water-soluble yarn that comprises polyvinyl alcohol multifilament (56dtex) that uses among 20 the 100% cotton staple fibre yarns (all build weaving (strain) make, " TS20 single thread ") of 600 times/meter (Z sth. made by twisting) and the embodiment 1 is supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M ") by twisting count, carry out twisted with twisting count (retwist) 700 times/meter (S sth. made by twisting), make composite twist yarn [ratio (B/A)=about 1.17 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(2) composite twist yarn that obtains from above-mentioned (1) cuts the yarn of specific length (1m), as the sample yarn, the retwist of this sample yarn is removed, be separated into two kinds of yarns of staple fibre yarn and water-soluble yarn, measure the quality of each yarn that separates, obtain the ratio of each yarn in the composite twist yarn by this measurement result, this composite twist yarn comprises 84 quality % staple fibre yarns and the water-soluble yarn of 16 quality %.

(3) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains in above-mentioned (1) as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40 weight % in the calicut) (woven speed 0.1m/ minute) of 25/cm, 20/cm of latitude.

(4) calicut that obtains in above-mentioned (3) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth was removed in dissolving, then takes out grey cloth from water, 150 ℃ of dryings 2 minutes.The grey cloth that obtains is thus stretched along broadwise, and yarn has no opposing sense ground decoherences fully, does not have practical value.

Comparative example 3

With twisting count is that the water-soluble yarn that comprises polyvinyl alcohol multifilament (56dtex) that uses among 20 the 100% cotton staple fibre yarns (all build weaving (strain) make, " TS20 single thread ") of 600 times/meter (Z sth. made by twisting) and the embodiment 1 is supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), carry out twisted with twisting count (retwist) 3500 times/meter (S sth. made by twisting), make composite twist yarn [retwist is counted ratio (B/A)=about 5.93 of the twisting count A of B and staple fibre yarn], broken string is many, the twisting difficulty can not be made composite twist yarn.

Comparative example 4

(1) (i) the preparation twisting count is 10 the 100% cotton staple fibre yarns (all building weaving (strain) manufacturing, " TS10 single thread ") of 350 times/meter (Z sth. made by twisting), 2 these staple fibre yarns are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), with 300 times/meter (S sth. made by twisting) twisting of twisting count, make doublet cord.

The polyvinyl alcohol multifilament of (ii) preparing to use among the embodiment 1 (56dtex) is as water-soluble yarn.

(2) doublet cord (staple fibre yarn) and the water-soluble yarn prepared in above-mentioned (1) are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), carry out twisted with twisting count (retwist) 600 times/meter (Z sth. made by twisting), make composite twist yarn [ratio (B/A)=2 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(3) cut the yarn of specific length (1m) in the composite twist yarn that from above-mentioned (2), obtains, as the sample yarn, the retwist of this sample yarn is removed, be separated into two kinds of yarns of staple fibre yarn (doublet cord) and water-soluble yarn, measure the quality of each yarn that separates, obtain the ratio of each yarn in the composite twist yarn by this measurement result, this composite twist yarn comprises 98.2 weight % staple fibre yarns (doublet cord) and the water-soluble yarn of 1.8 weight %.

(4) use 40 cotton doublet cords as warp thread, use in above-mentioned (2) and obtain composite twist yarn as weft yarn, woven one-tenth is through the calicut (blending ratio of the composite twist yarn in the calicut is 50 weight %) of 25/cm, 13/cm of latitude.

(5) calicut that obtains in above-mentioned (4) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth is removed in dissolving, then grey cloth is taken out from water, 150 ℃ of dryings 2 minutes.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the warp-stretch rate is 10%, and the weft direction stretch rate is 13%, and retractility is low.

Comparative example 5

(1) (i) prepares 120 the 100% cotton staple fibre yarns that twisting count is 1500 times/meter (Z sth. made by twisting) [RoyalTextile Mills Ltd. (India) manufacturing, " Royal 120 "] as staple fibre yarn.

(ii) prepare polyvinyl alcohol multifilament (330dtex) (being dissolved in the silk in 80 ℃ the water) (manufacturing of (strain) Kuraray, " water-soluble vinylon ") as water-soluble yarn.

(2) 1 staple fibre yarn and 1 water-soluble yarn of preparing in above-mentioned (1) are supplied with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), carry out twisted with twisting count (retwist) 2500 times/meter (S sth. made by twisting), make composite twist yarn [ratio (B/A)=about 1.67 of the twisting count B of composite twist yarn and the twisting count A of staple fibre yarn].

(3) cut the yarn of specific length (1m) in the composite twist yarn that from above-mentioned (2), obtains, as the sample yarn, the retwist of this sample yarn is removed, be separated into two kinds of yarns of staple fibre yarn and water-soluble yarn, measure the quality of each yarn that separates, obtain the ratio of each yarn in the composite twist yarn by this measurement result, above-mentioned composite twist yarn comprises 13 weight % staple fibre yarns and the water-soluble yarn of 87 weight %.

(4) use 40 cotton doublet cords as warp thread, use in above-mentioned (2) and obtain composite twist yarn as weft yarn, woven one-tenth is through the calicut (blending ratio of the composite twist yarn in the calicut is 40 weight %) (woven speed 0.1m/ minute) of 25/cm, 20/cm of latitude.

(5) calicut that obtains in above-mentioned (4) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth was removed in dissolving, then takes out grey cloth from water, 150 ℃ of dryings 2 minutes.The grey cloth morphological stability that obtains thus is poor, is easy to generate slippage, and practical value is low.

Comparative example 6

(1) use 1 40 cotton doublet cord as warp thread, the composite twist yarn that obtains among the use embodiment 1 (2) and 30 cotton doublet cords are in 1: 4 ratio is as weft yarn, and woven one-tenth is through the calicut (blending ratio of composite twist yarn is 8 weight % in the calicut) of 25/cm, 13/cm of latitude.

(2) calicut that obtains in above-mentioned (1) is soaked 30 minutes (bath raio=1: 10) in 80 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth is removed in dissolving, then grey cloth is taken out from water, 150 ℃ of dryings 2 minutes.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the warp-stretch rate is 11%, and the weft direction stretch rate is 10%, and retractility is low.

Embodiment 4

(1) (i) prepares 20 the 100% cotton staple fibre yarns that twisting count is 600 times/meter (Z sth. made by twisting) (all building weaving (strain) manufacturing, " TS20 single thread ") as staple fibre yarn.

Prepare (ii) to comprise that the filament fiber number is that the multifilament (オ ペ ロ Application テ Star Network ス company makes, " ラ イ Network ラ 127C ") of the elastic polyurethane of 78dtex is as the polyurethane stretch yarn.

The polyvinyl alcohol multifilament of (iii) preparing to use among the embodiment 1 (56dtex) (being dissolved in 90 ℃ of silks in the hot water fully) (manufacturing of (strain) Kuraray, " water-soluble vinylon ") is as water-soluble yarn.

(2) shown in the ideograph of Fig. 1, staple fibre yarn 1, polyurethane stretch yarn 2 and water-soluble yarn 3 of preparing in each 1 above-mentioned (1) the polyurethane stretch yarn being stretched to almost parallel ground doubling under 3.5 times the state, are wound into the bobbin shape, make cheese.

(3) with the debatching from the cheese that above-mentioned (2) obtain of above-mentioned three kinds of yarns, the polyurethane stretch yarn is being stretched under the 3.5 times above-mentioned state, carrying out twisted (retwist) simultaneously with two-for-one twister (field, village machinery (strain) manufacturing, " 36M "), making the twisting count in the composite twist yarn is 1200 times/meter (S sth. made by twisting), obtains the composite twist yarn (fiber number 369dtex) shown in the ideograph of Fig. 2.As shown in Figure 2, in the composite twist yarn that obtains thus, polyurethane stretch yarn 2 and water-soluble yarn 3 are coated by staple fibre yarn 1, any polyurethane stretch yarn 2 can not occur and be projected into the such problem in staple fibre yarn 1 outside.

(4) cut the yarn of specific length (1m) in the composite twist yarn that from above-mentioned (3), obtains, as the sample yarn, the retwist of this sample yarn is removed, be separated into staple fibre yarn, polyurethane stretch yarn and three kinds of yarns of water-soluble yarn, measure the quality of each yarn that separates respectively, obtain the ratio of each yarn in the composite twist yarn by this measurement result, this composite twist yarn comprises 79.1 weight % staple fibre yarns, 6 weight % polyurethane stretch yarn and the water-soluble yarn of 14.9 weight %.

(5) obtain composite twist yarn as warp thread and weft yarn in the use above-mentioned (3), woven one-tenth is through the calicut (blending ratio of the composite twist yarn in the calicut is 100 weight %) of 25/cm, 20/cm of latitude.In the woven process, need not that warp thread is implemented the starching processing and can carry out above-mentioned woven operation, problems such as broken string can not take place fully, but the woven or knitting calicut of high speed, woven production excellence (woven speed 0.1m/ minute).

(6) calicut that obtains in above-mentioned (5) is soaked 30 minutes (bath raio=1: 10) in 90 ℃ hot water, the water-soluble yarn in the composite twist yarn that forms grey cloth was removed in dissolving, then takes out grey cloth from water, 150 ℃ of dryings 2 minutes.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the warp-stretch rate is 23%, and the weft direction stretch rate is 27%, has high scalability, and resilience is also excellent.The gained grey cloth is owing to water-soluble yarn has been removed in dissolving in water, and is therefore soft, excelling in weight lightness.

Observe the warp thread of the formation grey cloth after the hot water treatment and the structure of weft yarn, shown in the ideograph of Fig. 3, the coating polyurethane stretch yarn 2 that cotton system staple fibre yarn 1 is good makes grey cloth have good hand feeling.

Embodiment 5

(1) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains among the embodiment 4 (6) as weft yarn, woven one-tenth is through the calicut (blending ratio of the composite twist yarn in the calicut is 40 weight %) of 25/cm, 20/cm of latitude.In the woven process, need not that warp thread is implemented the starching processing and can implement above-mentioned woven operation, problems such as broken string can not take place fully, but the woven or knitting calicut of high speed, woven production excellence (woven speed 0.1m/ minute).

(2) calicut that obtains in above-mentioned (1) is soaked 30 minutes (bath raio=1: 10) in 90 ℃ hot water, the water-soluble yarn dissolving that forms in the composite twist yarn of weft yarn of grey cloth is removed, then grey cloth is taken out from water, 150 ℃ of dryings 2 minutes.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the warp-stretch rate is 8%, and the weft direction stretch rate is 28%, and broadwise has high scalability, and bounce-back property is also excellent.And, owing to remove water-soluble yarn with water-soluble, so the gained grey cloth is soft, excelling in weight lightness.And shown in the ideograph of Fig. 3, the weft yarn that water (hot water) is handled back formation grey cloth is that cotton system staple fibre yarn coats the polyurethane stretch yarn well, can make grey cloth have good hand feeling thus.

Comparative example 7

(1) with the polyurethane stretch yarn cardinal principle doubling of using among the staple fibre yarn that uses among 1 embodiment 4 (Z twists with the fingers, twisting count 600 times/meter) and 1 embodiment 4 abreast, is wound into cheese-form, makes cheese.

(2) debatching in the cheese that above-mentioned two kinds of yarns are obtained from above-mentioned (1), be under the above-mentioned 3.5 times state in the elongation of polyurethane stretch yarn simultaneously, use with embodiment 4 in employed identical two-for-one twister carry out twisted (retwist), making the twisting count in the composite twist yarn is 1200 times/meter (S sth. made by twisting), obtains composite twist yarn (fiber number 314dtex).

(3) use 40 cotton doublet cords as warp thread, use composite twist yarn that above-mentioned (2) obtain as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40 weight % in the calicut) of 25/cm, 20/cm of latitude.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise with said method, the warp-stretch rate is 8%, and the weft direction stretch rate is 13%, compares with the grey cloth of removing behind the water-soluble yarn with the hot water dissolving that obtains among embodiment 4 and the embodiment 5, retractility is poor, and soft sense and light weight are also poor.

Comparative example 8

(1) with the staple fibre yarn (Z sth. made by twisting, twisting count 600 times/meter) that uses among the embodiment 4, the water-soluble yarn that uses among the polyurethane stretch yarn that uses among 1 embodiment 4 and 1 embodiment 4 is stretched to doubling abreast substantially under 3.5 times the state at the polyurethane stretch yarn, be wound into cheese-form, make cheese.

(2) debatching in the cheese that above-mentioned three kinds of yarns are obtained from above-mentioned (1), at the polyurethane stretch yarn is under the state of 3.5 times of above-mentioned elongations, use with embodiment 4 in the identical two-for-one twister of use carry out twisted (retwist), make that twisting count is 150 times/meter (a S sth. made by twisting) in the composite twist yarn, the tension force that will be applied to then on the polyurethane stretch yarn is removed, and obtains composite twist yarn.

(3) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains in above-mentioned (2) as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40% in the calicut) of 25/cm, 20/cm of latitude.In the woven process, the twisting count of composite twist yarn (twisting count of retwist) is 0.25 times of twisting count (twisting count of first twist) of staple fibre yarn, therefore in the composite twist yarn (weft yarn) staple fibre yarn to the coating deficiency of polyurethane stretch yarn etc., the part that the polyurethane stretch yarn is exposed to the outside is many, in addition to the fluffing the inhibition deficiency, and powerful irregular, in woven process, frequently break, woven productive rate is poor.

(4) calicut that obtains in above-mentioned (3) is soaked 30 minutes (bath raio=1: 10) in 90 ℃ hot water, the water-soluble yarn dissolving that forms in the composite twist yarn of weft yarn of grey cloth is removed, then from water, take out grey cloth, 150 ℃ of dryings.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the percentage elongation of warp-wise is 8%, and the percentage elongation of broadwise is 23%, broadwise has high scalability, but staple fibre yarn is to the coating deficiency of polyurethane stretch yarn etc., and the exposure of polyurethane stretch yarn is more, and commodity value is poor.

Comparative example 9

(1) with the staple fibre yarn (Z sth. made by twisting, twisting count 600 times/meter) that uses among the embodiment 4, the water-soluble yarn that uses among the polyurethane stretch yarn that uses among 1 embodiment 4 and 1 embodiment 1 is almost parallel ground doubling under 5.5 times the state in the elongation of polyurethane stretch yarn, be wound into cheese-form, make cheese.

(2) debatching in the cheese that above-mentioned three kinds of yarns are obtained from above-mentioned (1), be under the state of 5.5 times of above-mentioned elongations simultaneously at the polyurethane stretch yarn, use the two-for-one twister that uses among the embodiment 4 to carry out twisted (retwist), making the twisting count in the composite twist yarn is 1200 times/meter (S sth. made by twisting), make composite twist yarn, but the convergent force that the polyurethane stretch yarn causes is strong excessively, and the twisting operation is produced obstacle, can't make composite twist yarn.

Comparative example 10

(1) with the water-soluble yarn that uses among the polyurethane stretch yarn that uses among the staple fibre yarn that uses among the embodiment 4 (Z twists with the fingers, twisting count 600 times/meter), 1 embodiment 4 and 1 embodiment 4 is almost parallel ground doubling under 3.5 times the state in the elongation of polyurethane stretch yarn, be wound into cheese-form, make cheese.

(2) with the debatching from the cheese that above-mentioned (1) obtains of above-mentioned three kinds of yarns, be under the state of 3.5 times of above-mentioned elongations simultaneously at the polyurethane stretch yarn, use with embodiment 1 in the identical two-for-one twister of use carry out twisted (retwist), making the twisting count in the composite twist yarn is 2100 times/meter (S sth. made by twisting), make composite twist yarn, but the twist torque of yarn is strong excessively, twine twisting machine easily, and yarn can't stand strong twist torque, frequently breaks, and can't make composite twist yarn.

Comparative example 11

(1) with the water-soluble yarn that uses among the polyurethane stretch yarn that uses among the staple fibre yarn that uses among the embodiment 4 (Z twists with the fingers, twisting count 600 times/meter), 1 embodiment 4 and 1 embodiment 4 is almost parallel ground doubling under 1.5 times the state in the elongation of polyurethane stretch yarn, be wound into cheese-form, make cheese.

(2) with the debatching from the cheese that above-mentioned (1) obtains of above-mentioned three kinds of yarns, be under the state of 1.5 times of above-mentioned elongations simultaneously at the polyurethane stretch yarn, use with embodiment 1 in the identical two-for-one twister of use carry out twisted (retwist), making the twisting count in the composite twist yarn is 1200 times/meter (S sth. made by twisting), remove the tension force that imposes on the polyurethane stretch yarn then, obtain composite twist yarn.

(3) with 40 cotton doublet cords as warp thread, as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 40 weight % in the calicut) of 25/cm, 20/cm of latitude with the composite twist yarn that obtains in above-mentioned (2).

(4) calicut that obtains in above-mentioned (3) is soaked 30 minutes (bath raio=1: 10) in 90 ℃ hot water, the water-soluble yarn dissolving that forms in the composite twist yarn of tram of grey cloth is removed, then from water, take out grey cloth, 150 ℃ of dryings.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the percentage elongation of warp-wise is 8%, and the percentage elongation of broadwise is 9%.

Comparative example 12

(1) use 40 cotton doublet cords as warp thread, use the composite twist yarn that obtains in embodiment 4 above-mentioned (3) and 20 cotton doublet cords according to the ratio of 1: 3 (length of yarn than) as weft yarn, woven one-tenth is through the calicut (blending ratio of composite twist yarn is 8 weight % in the calicut) of 25/cm, 20/cm of latitude.

(2) calicut that obtains in above-mentioned (1) is soaked 30 minutes (bath raio=1: 10) in 90 ℃ hot water, the water-soluble yarn dissolving that forms in the composite twist yarn of a part of grey cloth weft yarn is removed, then grey cloth is taken out from water, 150 ℃ of dryings.Measure the warp-wise of the grey cloth that obtains thus and the percentage elongation of broadwise according to the method described above, the percentage elongation of warp-wise is 8%, and the percentage elongation of broadwise is 10%.

Claims (10)

1. composite twist yarn, this composite twist yarn forms to major general's staple fibre yarn and water-soluble yarn twisted, the sth. made by twisting of composite twist yarn to the sth. made by twisting of staple fibre yarn to opposite, and satisfy following necessary condition (1) or (2):

(1) twisting count of composite twist yarn is 1.3-3 times with respect to the twisting count of staple fibre yarn, and the ratio of staple fibre yarn and water-soluble yarn (weight ratio) is staple fibre yarn/water-soluble yarn=20/80-98/2;

(2) further twisted is stretched to 2-5 stretch yarn doubly, and the twisting count of composite twist yarn is 0.3-3 times with respect to the twisting count of staple fibre yarn, the ratio (weight ratio) of staple fibre yarn and above-mentioned stretch yarn is staple fibre yarn/stretch yarn=50/50-99.9/0.1 simultaneously, and the ratio (weight ratio) of the total amount of staple fibre yarn and stretch yarn and water-soluble yarn is: the total amount of staple fibre yarn and stretch yarn/water-soluble yarn=30/70-99/1.

2. the composite twist yarn of claim 1, this composite twist yarn satisfies necessary condition (2), and stretch yarn is the polyurethane stretch yarn.

3. the composite twist yarn of claim 1, this composite twist yarn satisfies necessary condition (2), based on the weight of composite twist yarn, the ratio of staple fibre yarn is 20-98 weight %, and the ratio of stretch yarn is that the ratio of 0.5-20 weight % and water-soluble yarn is 1-70 weight %.

4. the composite twist yarn of claim 1, wherein water-soluble yarn is water-soluble long filament.

5. the manufacture method of the composite twist yarn of claim 1, this method are with staple fibre yarn and water-soluble yarn twisted at least and make the method for composite twist yarn, with the sth. made by twisting of staple fibre yarn twisted composite twist yarn in the opposite direction.

6. the method for claim 5, this method is to satisfy the manufacture method of the composite twist yarn of the necessary condition of claim 1 (1), this method is with staple fibre yarn and water-soluble yarn doubling, with staple fibre yarn and water-soluble yarn twisted, the twisting count that makes composite twist yarn with respect to the twisting count of staple fibre yarn be 1.3-3 doubly.

7. the method for claim 5, this method is to satisfy the manufacture method of the composite twist yarn of the necessary condition of claim 1 (2), this method is with staple fibre yarn, water-soluble yarn and is stretched to 2-5 stretch yarn doubling doubly, with staple fibre yarn, above-mentioned stretch yarn and water-soluble yarn twisted, the twisting count that makes composite twist yarn with respect to the twisting count of staple fibre yarn be 0.3-3 doubly.

8. the manufacture method of cloth and silk, this method are from the woven or knitted fabric that is formed by the composite twist yarn of claim 1 at least, make water-soluble yarn in the composite twist yarn that constitutes woven or knitted fabric be dissolved in the hydrophilic solvent and remove.

9. the method for claim 8 wherein, as woven or knitted fabric, is used the woven or knitted fabric of the composite twist yarn that contains 10 weight % or above claim 1, makes water as hydrophilic solvent simultaneously.

10. cloth and silk, this cloth and silk is obtained by the method for claim 8.

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