JP2015140488A - Stretchable paper yarn, woven or knitted fabric using the same and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stretchable paper yarn having stretchability, a woven or knitted fabric using the same and a manufacturing method therefor.SOLUTION: A stretchable paper yarn (1) of the present invention is a twisted yarn including a core yarn (2), a plating yarn (5) and a press yarn (6). The core yarn (2) includes a stretchable yarn, which is highly shrinkable with hot water. The plating yarn (5) is a paper slit yarn. The press yarn (6) is at least one yarn selected from a non-stretchable yarn and a stretchable yarn which is highly shrinkable with hot water. A woven or knitted fabric including the stretchable paper yarn of the present invention has a stretchability of 5-50% as measured in accordance with the elongation rate method A of JIS L1096. In a method for manufacturing the woven or knitted fabric including the stretchable paper yarn of the present invention, a woven or nonwoven fabric including the stretchable paper yarn is formed, and then the fabric is dyed or subjected to hot water treatment at 90-110°C for 1-10 minutes or heat treatment having an effect equal to or higher than that of the hot water treatment. Thereby, a higher level of crimping of a latently crimpable yarn is developed, and the woven or knitted fabric having stretchability is obtained.

Description

  The present invention relates to an elastic paper thread, a woven or knitted fabric using the same, and a method for producing the same.

  Conventionally, it is known that a paper slit tape or a paper slit yarn is twisted (hereinafter also referred to as “paper yarn”) to form a woven or knitted fabric. This paper thread is made from paper, and since cellulose is the main component, it has the same hygroscopicity as cotton, has a good feel and texture, and is used as clothing. As a conventional proposal, for example, Patent Documents 1 to 3 propose that a paper is slit and twisted into a yarn. Patent Document 4 discloses that a woven fabric with a non-uniform wrinkle-like pattern is obtained by making the twist of the paper slit yarn 3 times or more different. In the patent document 5, the present inventor has proposed a yarn in which the number of twists in the length direction of the paper yarn is changed.

JP 2010-095835 A JP 2010-037670 A JP 2003-301397 A JP 2009-007689 A JP 2013-136862 A

  However, the conventional paper yarn has a problem of poor stretchability. If stretchability is poor, there will be no stretch when denim or shirts are used, the movement of the human body will be restricted, the motor function will be restricted, and the comfort will not be good.

  In order to solve the above-described conventional problems, the present invention provides a stretchable paper yarn having stretchability, a woven or knitted fabric using the same, and a method for producing the same.

  The stretchable paper yarn of the present invention is a stretchable paper yarn including a core yarn, a splicing yarn, and a presser yarn, and the core yarn includes a stretchable yarn that highly contracts with hot water, and the splicing yarn Is a paper slit yarn, and the presser yarn is at least one yarn selected from a non-stretchable yarn and a stretchable yarn that highly contracts with hot water.

  The woven or knitted fabric containing the stretchable paper yarn of the present invention has a stretchability of 5 to 50% as measured by JIS L1096 elongation rate A method.

  The method for producing a woven or knitted fabric containing the stretchable paper yarn of the present invention is the above-described woven or knitted fabric containing the stretchable paper yarn, followed by dyeing, or hot water treatment at 90 to 110 ° C. for 1 to 10 minutes, or equivalent thereto. By performing the above heat treatment, a higher crimp of the latent-type crimped yarn is expressed and a woven or knitted fabric having a stretch is obtained.

  The stretchable paper yarn of the present invention includes a core yarn, a spliced yarn, and a presser yarn, the core yarn includes a stretchable yarn that highly contracts with hot water, the spliced yarn is a paper slit yarn, and the presser yarn is a non-stretchable yarn and It is at least one yarn selected from stretch yarns that are highly contracted by hot water. By twisting the entire yarn, a stretchable paper yarn having stretch properties and a woven or knitted fabric using the same can be provided. Stretch yarns have a low crimp at room temperature, but when producing woven or knitted fabrics, there is an advantage that they can be handled in the same way as ordinary woolen yarns and can be produced efficiently. And after making it into a woven or knitted fabric, it is highly shrunk by hot water treatment and expresses stretch properties. Further, even when subjected to hot water treatment at the yarn stage such as yarn dyeing, the stretchability of the yarn is not as high as that of the elastic yarn, so that there is no problem in producing the woven or knitted fabric.

FIG. 1 is a configuration diagram of a stretchable paper thread according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a stretchable paper thread according to another embodiment of the present invention. FIG. 3 is a production process diagram of stretchable paper yarn by a tri twister twisting machine according to an embodiment of the present invention. FIG. 4 is a production process diagram of stretchable paper yarn by a tri twister twisting machine according to another embodiment of the present invention. FIG. 5 is a graph showing the elongation percentage of a fabric according to an embodiment of the present invention.

  The present inventor has studied to impart stretch properties to a twisted yarn containing a paper slit yarn or a woven or knitted fabric using the twisted yarn. Usually, an elastic yarn such as polyurethane is used to impart stretchability. In this case, the elastic yarn is used as one component of the woven or knitted yarn, or a non-elastic yarn is wound around the elastic yarn to obtain a covered yarn (covered elastic yarn), which is used as a woven fabric or a knitted fabric. However, the stretchability of the elastic yarn was too high, and it was difficult to integrate it into a paper yarn with little elongation. Since the paper yarn is hard and has little elongation, even if the elastic yarn and the paper yarn can be integrated, it is difficult to achieve the stretch property of the elastic yarn. Therefore, the present inventor has come up with the idea of applying a latent crimped yarn that is highly shrunk with hot water.

  The present invention was born and completed from such an idea, and includes a core yarn, a splicing yarn, and a presser yarn, the core yarn includes a stretchable yarn that is highly contracted by hot water, the splicing yarn is a paper slit yarn, The yarn is a non-stretchable yarn and / or a stretchable yarn, and is a stretchable paper yarn that is twisted as a whole. Stretch yarns have a low crimp at room temperature, but when producing woven or knitted fabrics, there is an advantage that they can be handled in the same way as ordinary woolen yarns and can be produced efficiently.

  In the present invention, the core yarn can be a stretch yarn alone. In this case, in order to reduce the count (thickness) of the entire thread, use a thin elastic thread (for example, about 75 denier), and also use a similar thin elastic thread for the holding thread. Can be obtained. When the thickness of the whole yarn may be thick to some extent, use stretchable yarn and non-stretchable yarn as the core yarn, use paper slit yarn as the splicing yarn, presser yarn as cotton (cotton) yarn, polyester yarn, nylon It is preferable to use a thread, a stretchable thread or the like.

  When the non-stretchable yarn is included in the core yarn, the thickness (fineness) of the yarn can be easily adjusted, the strength can be maintained, and the width of the woven or knitted fabric can be easily increased. Further, the strength can withstand the rope dyeing of the yarn. It is easy to determine the width after the hot water treatment.

  The presser thread is used to wrap around the entire thread. The number of windings depends on the thickness (fineness) of the yarn, but is 200 to 400 times / m for the cotton count 7 single yarn (835 deci tex), 300 to 400 for the cotton count 30 single yarn (194 deci tex) It is preferable to wind 500 times / m.

  The stretchable yarn is preferably a conjugated filament yarn in which a polyethylene terephthalate component and a polytrimethylene terephthalate component are compound-spun side by side. An example of such stretchable yarn is “Lycra T400” (available from Toray Operontex) manufactured by Invista.

  The length relationship per unit length between the core stretch yarn (A1) and non-stretch yarn (A2) and the splicing paper slit yarn (B) is preferably B> A1> A2. More preferably, when the length of A2 is 1, the length of A1 is 1.05 to 1.15, the length of B is 1.1 to 1.2, provided that B> A1> A2. If such a relationship is maintained, the width at the time of manufacturing the woven or knitted fabric and the width after hot water treatment can be easily obtained.

  The non-stretchable yarn of the core yarn and the non-stretchable yarn of the presser yarn are preferably spun yarn or multifilament yarn. As the spun yarn, cotton (cotton), hemp, rayon, acetate, wool, polyamide (nylon), polyester, acrylic fiber, and blended products thereof are preferable. In order to further increase the water absorption of the paper yarn, a spun yarn containing cellulosic fibers such as cotton, hemp and rayon is preferred. A spun yarn containing hydrophobic fibers such as polyester is preferable for increasing the quick drying property. As the multifilament yarn, it is preferable to use a multifilament yarn made of synthetic fiber such as polyamide (nylon), polyester, acrylic fiber or polyvinyl alcohol, or a multifilament yarn made of recycled fiber such as acetate or rayon.

  The stretchable paper yarn has a stretchability of more than 5% (1.05 times the original length) after dyeing, heat treatment at 90 to 110 ° C. for 1 to 10 minutes, or heat treatment equivalent to or higher than this. More preferably, more than 10% and 60% or less (1.1 to 1.6 times the original length), particularly preferably more than 20% and 50% or less (1.2 to 1 of the original length). .5 times). When the stretchability is within the above range, the weaving process passing property can be improved, and the elongation at the time of wearing is also improved. Stretchability is measured by the JIS L1013-2100 elongation rate A method.

  The woven or knitted fabric of the present invention has a stretchability of 5 to 50%, preferably 7.5 to 40%, more preferably 10 to 30%, as measured by JIS L1096 elongation ratio A method (14.7N load). . If the stretchability is within the above range, it is possible to realize stretchability that does not impair the motor function when worn.

  The stretchable paper thread of the present invention can be applied to, for example, a paper diaper. This is because the paper thread has good hydrophilicity. Further, the woven or knitted fabric including the elastic yarn can be applied to a denim fabric, a shirt fabric, a sports fabric, or the like. When these fabrics are used as clothes, the feeling of wearing becomes comfortable if there is stretchability. Further, since the paper yarn has good hydrophilicity, clothes with high water absorption and hygroscopicity can be obtained, and the wearing feeling becomes comfortable.

  After the production method of the present invention is made into a woven or knitted fabric, it is dyed, or subjected to a hot water treatment at 90 to 110 ° C. for 1 to 10 minutes, or a heat treatment equivalent to or higher than this, thereby raising the higher wrinkle of the latent crimped yarn. A woven or knitted fabric having a stretch and a stretch can be obtained. As described above, efficient weaving and knitting can be performed.

  In the present invention, the number of twists may be fixed or changed when the elastic paper yarn is manufactured. The number of twists may be arbitrary, but preferably 200 to 400 T / m (T is a turn) in the case of cotton count 7 single yarn (835 deci tex), and the cotton count 30 single yarn (194 deci tex) In that case, it is preferable to wind 300 to 500 T / m. The number of twists in the length direction can also be varied. Preferably, changing the number of twists per arbitrary length (hereinafter also referred to as a predetermined length) within the range of 10 to 1000 mm of twisted yarn has an effect of further improving uneven dyeing such as horizontal and vertical stages. More preferably, two or more types of changes in the number of twists are given for each predetermined length, and the effect is higher. If the interval (pitch) for changing the number of twists for each predetermined length is within the range of 10 to 1000 mm, the shorter the distance, the closer to the plain tone. The interval (pitch) may be a constant interval (random pitch) or may be changed at random for each pitch.

  Although the change in the number of twists varies depending on the texture of the target fabric, the number of twists in the length direction of the twisted yarn is varied. Preferably, it is effective to change the number of twists per arbitrary length (hereinafter also referred to as a predetermined length) within a range of 10 to 1000 mm of twisted yarn. More preferably, two or more types of changes in the number of twists are given for each predetermined length, and the effect is higher. If the interval (pitch) for changing the number of twists for each predetermined length is within the range of 10 to 1000 mm, the shorter the distance, the closer to the plain tone. The interval (pitch) may be a constant interval (random pitch) or may be changed at random for each pitch.

  When the change in the number of twists is increased and the pitch is increased unevenly, the woven or knitted fabric approaches a plain tone. Moreover, when it is not set as a random pitch, it will approach a plain tone by increasing the change of a pitch. If it is plain, it will become the appearance of a favorable woven or knitted fabric. The number of twists of the predetermined length of the twisted yarn is preferably different in the range of 1 to 50%, and more preferably in the range of 2 to 25%. If it is this range, generation | occurrence | production of the more preferable horizontal stage and length stage can be prevented.

  In order to change the number of twists in the length direction of the twisted yarn of the present invention, the spindle rotational speed of the twisting machine is made constant, and the feeding speed or winding speed of the paper slit yarn is changed. It is not easy to change the spindle rotation speed of the twisting machine in a short time while keeping the feeding speed or winding speed of the paper slit yarn constant. The device becomes large and it is difficult to control the yarn. On the other hand, changing the feeding speed or winding speed of the paper slit yarn without changing the spindle rotation speed of the twisting machine does not require so much modification, and the yarn can be easily controlled.

  The paper slit yarn is preferably supplied to the twisting machine in an overfeed state of 1 to 10%, more preferably 2 to 7%. Thereby, a preferable elongation can be imparted to the twisted yarn.

  As the twisting machine, a double twister, an Italian twisting machine (also called a tritwistor), an atwood twisting machine, a pun yarn feeding up twister, a ring twisting machine, and a twisting machine can be used. Among them, a double twister or an Italian twisting machine (Trizister) is preferable when obtaining a twisted yarn of a paper slit yarn alone, and an Italian twisting machine (Trizister) is preferable when obtaining a twisted yarn of a paper slit yarn and a multifilament yarn. In the case of an Italian twisting machine (Trizister) that passes the paper slit yarn through the spindle and winds it as it is, a false twisting spindle is provided after the twisting machine, and the false twisting spindle rotates in the same direction as the actual twisting direction of the paper slit yarn. It is preferable to do so. The twisted yarn with different number of twists in the length direction by changing the feeding speed or winding speed of the paper slit yarn while keeping the spindle rotation speed of the twisting machine constant is the same direction as the actual twisting direction of the paper slit yarn. The false twisting spindle that is rotated in a stable manner makes it possible to stabilize the twisting and to wind up with the sharpness without being balanced in the number of twists.

  The paper slit yarn used in the present invention may be any paper raw material. For example, there are conifers, hardwoods, bamboo, natural fibers including various hemps, etc. as raw materials for pulp. Paper is produced according to conventional methods. Glue (binder) is mixed with pulp, wet papermaking, and dried to obtain paper. Use glue (binder) that does not dissolve in sweat or water during selection. The paper thickness and slit width can be arbitrary. For example, a slit width of 2 mm and a fineness of 292 deci tex (cotton count 20) single thread, a slit width of 1.5 mm and a fineness of 194 deci tex (cotton count 30) single thread, a slit width of 1 mm and a fineness of 146 deci tex (cotton count 40) Yarn etc. can be used. The fineness of the paper slit yarn of the present invention is preferably from 100 to 800 decitex, more preferably from 120 to 600 decitex when including clothing and industrial use. When it is limited to clothing, it is preferably 100 to 500 deci tex, more preferably 120 to 400 deci tex.

  The stretchable paper yarn can also be rope dyed with indigo dye. Rope dyeing is difficult because the conventional paper yarn has poor elongation. When rope dyeing becomes possible, both warp and weft of denim fabric can be indigo dyed. The resulting denim fabric also has stretch properties in the direction of the weft. Rope dyeing is a method in which a denim thread is formed into a rope shape, dipped in a dye bath containing an indigo derivative-containing product, squeezed and air-oxidized repeatedly. If necessary, an oxidation step [for example, a step of immersing in sodium perborate 2 to 5 g / l water bath solution (40 to 70 ° C. for 20 to 60 seconds)] is added to the final airing step to improve the denim cotton thread. Perform staining. Rope dyeing is known and disclosed in, for example, JP-A-5-032911.

  This will be described below with reference to the drawings. In the following drawings, the same symbols indicate the same items. FIG. 1 is a configuration diagram of a stretchable paper thread according to an embodiment of the present invention. The stretchable paper yarn 1 is a stretchable yarn 2 whose core yarn is highly shrunk by hot water, the splicing yarn 5 is a paper slit yarn, and the periphery of the core yarn and the splicing yarn is wound around the presser yarn 6. The stretchable paper yarn 1 may have the same number of twists, but is preferably twisted so that the number of twists in the length direction is different. As a result, it is possible to prevent the occurrence of horizontal and vertical stages after dyeing. This stretchable paper thread 1 is suitable for making a fine count thread.

  FIG. 2 is a configuration diagram of a stretchable paper thread according to another embodiment of the present invention. The stretchable paper yarn 7 is composed of a stretchable yarn 2 and a non-stretchable yarn 3 in which the core yarn 4 is highly contracted by hot water, and a spliced yarn is a paper slit yarn 5, around the core yarn 4 and the paper slit yarn 5. It is wound with the presser thread 6. The stretchable paper yarn 1 may have the same number of twists, but is preferably twisted so that the number of twists in the length direction is different. As a result, it is possible to prevent the occurrence of horizontal and vertical stages after dyeing. This stretchable paper thread 1 is suitable for making a thick yarn.

  FIG. 3 is a production process diagram of stretchable paper yarn by a tri twister twisting machine according to an embodiment of the present invention. As a presser thread, a cotton thread, a polyester thread, a nylon thread, a stretchable thread 17 or the like wound around the pan 16 is pulled out and inserted from above the hollow spindle 18. As the core yarn, the stretchable yarn 10 that is highly contracted by hot water is fed from the feed roller 11, and the non-stretchable yarn 12 is fed from the feed roller 13 and is inserted from above the hollow spindle 18. The splicing yarn 14 is fed from the feeding roller 15 and is put from above the hollow spindle 18, the core yarn and the splicing yarn are wound, and the splicing yarn 14 is taken out from below the hollow spindle 18, passes through the lower guide 20, and is wound on the winding winder 21. The drive belt 19 is driven in the right direction, whereby a right twist (actual twist) is applied to the elastic paper yarn. The actual twist is temporarily fixed as it is and wound around the winder 21. The number of twists per predetermined length is changed by changing the speed of the feed rollers 11, 13, 15 and / or the winder 21. As a result, the twisted yarns having different numbers of twists in the length direction can be wound while the twists are stable and the twist numbers are not leveled.

  FIG. 4 is a production process diagram of stretchable paper yarn by a tritwister twisting machine according to still another embodiment of the present invention. The difference from FIG. 3 is that a false twist hollow spindle 24 is provided after the tri twister twisting machine. In the tri twister twisting machine, a right twist (actual twist) is applied to the stretchable paper yarn by driving the drive belt 22 in the right direction. The false-twisted hollow spindle 24 is driven to the right by the drive belt 23 in the right direction. Due to the false twisting of the hollow spindle 24 in the same direction, the actual twists with different twist numbers are temporarily fixed as they are and wound around the winder 21. A twisted yarn having a different number of twists in the length direction by a tri twister twisting machine can be wound with the twist being stable and with a sharpness without being balanced. A preferable rotational speed of the false twisted hollow spindle 24 is 1000 to 12000 rpm.

  The stretchable paper yarn of the present invention is excellent in water absorption per se and can be used as a stretchable yarn for paper diapers. It is also suitable for knitted fabrics. The knitted fabric may be any knitted fabric such as a horizontal knitting, a tricot warp knitting, and a Russell warp knitting. Examples of woven fabrics include plain weave, twill weave, satin weave and change structures derived from them, honeycomb weave, single double weave, double weave, etc., pile weave, pile velvet, etc. It is done. As a product, it is suitable for summer clothing such as denim, shirt, pants and underwear, bedding such as towels, sheets and towels, or sportswear with sweating because of its excellent hygroscopicity. In addition, uniforms, insoles, socks, underwear, underwear, inner garments, outer garments, outer garments, linings, futon linings, chair linings, hats, gloves, sweaters, slacks, skirts and the like.

In the case of denim fabric, as an example, a cotton count is used with 6-7 single yarns, the number of warp yarns to be driven is 52 to 68 yarns / inch, the number of weft yarns to be driven is 40-50 yarns / inch, and the basis weight is 100 to 400 g / m ^2. Is preferred. In the case of shirting, as an example, a cotton count of 30 single yarn is used, the number of warp yarns to be driven is 120 to 130 yarns / inch, the number of weft yarns to be driven is 60 to 70 yarns / inch, and a basis weight of 100 to 300 g / m ² is preferable. .

  Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to the following examples.

Example 1
1. Yarn material (1) Stretch yarn for core yarn The product name “Lycra T400”, 167decitex (sold by Toray Operontex) manufactured by INVISTA was used.
(2) Non-stretchable yarn for core yarn Cotton (cotton) yarn, 30/1 (cotton count 30 single yarn) was used.
(3) Saddle yarn slit yarn A slit tape obtained by slitting slit yarn paper made of Shirakawa Paper Manila hemp (Abaca seed) into a width of 4 mm was used.
(4) Non-stretchable yarn for presser yarn Cotton (cotton) 80/1 (cotton count 80 single yarn) was used.

2. Manufacturing apparatus The twister shown in FIG. 3 was used as the twisting machine. The supply rate of each yarn was 1.1 times for the stretch yarn of the core yarn and 1.15 times for the splicing paper slit yarn when the supply rate of the cotton yarn for the core yarn was 1. The number of twists in the length direction of the yarn was changed by changing the winding speed of the elastic paper yarn while keeping the spindle rotation speed constant. The overfeed rate was 5%. The divisions in Table 1 are one cycle of the first division, the second division, the third division, the second division, and the first division. The obtained twisted yarn was as shown in FIG. 2 and was a cotton count 6.4 single yarn (917 deci tex).

  This stretchable paper yarn was hydrothermally treated at 100 ° C. for 3 minutes and the stretchability was measured by JIS L1013-2100 (Testing method for chemical fiber filament yarn 8.11, stretchability A method). The elastic modulus was 78.2%. The yarn before the hot water treatment had a stretch elongation ratio of 1.5% and a stretch elastic modulus of 53.3%. The results are shown in Table 2.

The stretchable paper yarn obtained as described above was woven into a 1/3 twill weave with a warp driving number of 62 / inch and a horizontal driving number of 44 / inch. The resulting fabric had a constant width. The weight (unit weight) per unit area was 325 g / m ² . When this woven fabric was hydrothermally treated at 100 ° C. for 3 minutes, it was 82% in both the vertical and horizontal directions and contracted by 18%. The fabric width after the hot water treatment was also constant. The product of this example was plain with almost no horizontal steps observed.

  When the woven fabric before and after the hot water treatment was measured by the JIS L1096 elongation rate A method, the elongation at break was 4.0% before the hot water treatment and 22.1% after the hot water treatment. This measurement graph is shown in FIG. The elongation (stretchability) at the time of 14.7 N load was 2.3% before the hot water treatment and 15.7% after the hot water treatment. The results are summarized in Table 3.

  Moreover, when the denim fabric of the product of this example was sewn and worn on the trousers, it was confirmed that it was stretchable and hygroscopic and comfortable as a summer clothing.

(Example 2)
1. Yarn material (1) Stretch yarn for core yarn The product name “Lycra T400”, 84 deci tex (sold by Toray Operontex Co., Ltd.) manufactured by INVISTA was used.
(2) Non-stretchable yarn for core yarn Cotton (cotton) yarn, 40/1 (cotton count 40 single yarn) was used.
(3) Saddle yarn slit yarn A slit tape obtained by slitting slit yarn paper made from Shirakawa Paper's Manila hemp (Abaca seed) to a width of 2 mm was used.
(4) Non-stretchable yarn for presser thread Cotton (cotton) 60/1 (cotton count 60 single yarn) was used.

2. Manufacturing apparatus The twister shown in FIG. 4 was used as the twisting machine. The supply rate of each yarn was 1.1 times for the stretch yarn of the core yarn and 1.15 times for the splicing paper slit yarn when the supply rate of the cotton yarn for the core yarn was 1. The number of twists in the length direction of the yarn was changed by changing the winding speed of the elastic paper yarn while keeping the spindle rotation speed constant. The number of rotations of the false twisted hollow spindle 24 was 10,000 rpm. The overfeed rate was 5%. The divisions in Table 4 are one cycle of the first division, the second division, the third division, the second division, and the first division. The obtained elastic paper yarn was as shown in FIG. 2 and was a cotton count 10.4 single yarn (568 deci tex).

Using the elastic paper yarn (single yarn) obtained as described above, 48 yarns are supplied to the circular knitting machine, knitted with a knitting width of 1000 mm and a gauge of 20 per inch, and a basis weight of 260 g / m ² . Got. This knit was dyed dark blue with reactive dye. As a result, the product of this example was plain with almost no horizontal step observed. Moreover, when the knit of the product of this example was sewn and worn on a shirt, it was confirmed that it had stretchability and moisture absorption and was comfortable as a summer clothing. The stretchability was 15% for both vertical and horizontal.

1,7 Stretchable paper thread 2 Stretchable thread (core thread)
3 Non-stretchable yarn (core yarn)
4 Core yarn 5 Saddle yarn (paper slit yarn)
6 Presser thread 10 Stretchable thread 11, 13, 15 Feed roller 12 Non-stretchable thread 14 Attached thread (paper slit yarn)
16 Pann 17 Presser thread 18 Hollow spindle 19, 22, 23 Drive belt 20 Guide 21 Winder 24 Hollow spindle

Claims (10)

A stretchable paper thread that includes a core thread, splicing thread, and presser thread, and is twisted,
The core yarn includes a stretchable yarn that highly contracts with hot water,
The splicing yarn is a paper slit yarn;
The stretchable paper yarn is characterized in that the presser yarn is at least one yarn selected from a non-stretchable yarn and a stretchable yarn that highly contracts with hot water.   The stretchable paper yarn according to claim 1, wherein the stretchable yarn that is highly shrunk by hot water is a conjugate filament yarn in which a polyethylene terephthalate component and a polytrimethylene terephthalate component are compound-spun side by side.   The stretchable paper yarn according to claim 1, wherein the core yarn coexists with a non-stretchable yarn together with a stretchable yarn that highly shrinks with hot water.   The length relationship per unit length between the stretch yarn (A1) and the non-stretch yarn (A2) of the core yarn and the paper slit yarn (B) of the splicing yarn is B> A1> A2. The elastic paper thread as described.   The stretchable paper yarn according to any one of claims 1 to 4, wherein the non-stretchable yarn of the presser yarn is a spun yarn or a multifilament yarn.   The stretchable paper yarn has a stretchability after hot water treatment of 1 to 10 minutes at 90 to 110 ° C, exceeding 5% (1.05 times the original length). Stretchy paper thread.   The stretchable paper yarn according to any one of claims 1 to 6, wherein the stretchable paper yarn is rope-dyed with an indigo dye. A woven or knitted fabric comprising the stretchable paper yarn according to any one of claims 1 to 7,
A woven or knitted fabric having a stretchability of 5 to 50% measured by JIS L1096 elongation ratio A method (14.7 N load).   The woven or knitted fabric containing the elastic paper yarn according to claim 8, wherein the woven or knitted fabric containing the elastic paper yarn is a denim fabric, a shirt fabric or a sports fabric. A method for producing a woven or knitted fabric comprising the stretchable paper yarn according to any one of claims 1 to 7,
After weaving and knitting, dyeing, or hot water treatment at 90 to 110 ° C. for 1 to 10 minutes, or heat treatment equal to or higher than this, reveals higher crimps of latent-type crimped yarn and has a stretch. A method for producing a woven or knitted fabric including a shrinkable paper yarn, characterized by obtaining a knitted fabric.

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