JP2007314900A - Functional fabric, fabric subjected to edge treatment, and method for producing them - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide such a functional fabric that, for subjecting it to a treatment of separating its edge part, sacrificed yarn part is knitted with yarn made by covering polyurethane elastic yarn with water-soluble Vinylon yarn(polyvinyl alcohol-based yarn) followed by dissolving and removing the water-soluble Vinylon yarn, and in making a separation along the sacrificed yarn part, any cutting tool or the like is not needed, to provide a fabric subjected to the edge treatment, and to provide respective methods for producing them. <P>SOLUTION: The functional fabric is such as to be cylindrically knitted by a circular knitting machine consecutively in the order of sacrificed yarn part 1, stretch narrow part 2 and the main fabric 3, wherein the sacrificed yarn part 1 is knitted with yarn made by covering polyurethane elastic yarn with water-soluble vinylon yarn followed by dissolving and removing the water-soluble vinylon yarn. The fabric subjected to the edge treatment and composed of the main fabric 3 and the stretch narrow part 2 is produced by making a separation along the sacrificed yarn part of the functional fabric. The respective methods for producing the functional fabric and the latter fabric are also provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a functional fabric, a fabric subjected to an end treatment, and a method for producing the same, and more particularly to a fabric having an end portion subjected to a cutting process having an excellent texture that cannot be understood in detail and a method for producing the fabric.

  Conventionally, when manufacturing a garment used as an inner such as underwear, various improvements have been made so that the unevenness of the garment does not appear in appearance when the garment is worn. For example, there is a method of eliminating wrinkles and sagging of the fabric by manufacturing with stretch fabric, or a method of eliminating unevenness due to overlock stitching, turn-up stitching, and tape sewing by performing a hem cut-off process. Can be mentioned.

Usually, a cylindrical fabric is used for the trunk and sleeve of clothing, and most of them are manufactured by a circular knitting machine. Furthermore, since the structure of the knitted structure is stretchable, a circular knitting machine is preferably used for producing a fabric for wearing under the skin.
From the above, it has been considered that an excellent undergarment capable of satisfying the above-mentioned problems can be manufactured by manufacturing a stretchable fabric with a circular knitting machine and performing a cut-off process on the hem.

  Patent Document 1 discloses an invention relating to a method for manufacturing an edge portion of a circular knitted fabric. According to the present invention, a circular knitted fabric is knitted with a spun yarn using a circular knitting machine, and an elastic narrow width portion and then a discard portion are knitted on the edge of the body fabric, The discard yarn is knitted by covering polyurethane elastic yarn, polyamide yarn, and water-soluble vinylon yarn. According to this invention, the water-soluble vinylon yarn is dissolved in the dyeing process, and the circular knitted fabric can be cut along the discarded yarn portion.

  However, the discard portion in the invention of Patent Document 1 is formed by covering a polyurethane elastic yarn and a polyamide yarn with a water-soluble vinylon yarn. Therefore, even after the water-soluble vinylon is dissolved in the dyeing process, the discard portion has a polyurethane portion. Elastic yarn and polyamide yarn remain. That is, the invention of Patent Document 1 requires a special cutting instrument such as a roll cutter in order to cut along the yarn disposal portion in the final process. On the contrary, if it is forcibly cut off by hand, the elastic elastic yarn and the polyamide yarn appear on the cut surface, and the appearance is not desirable, and the entire knitted fabric is stretched by excessive tension. Was.

That is, in the fabric formed by knitting a discard portion containing a water-soluble vinylon yarn, an extra cutting instrument is not required when cutting along the discard portion, and the cut surface of the cut surface can be removed even if it is manually cut. A functional fabric that has a good appearance and prevents the entire knitted fabric from being stretched by excessive tension and a method for producing the same are expected, but no such invention has yet been created. .
JP 2005-290581 A

The present inventors have adopted a method of dissolving and removing the water-soluble vinylon yarn after knitting a discarded portion knitted by a yarn obtained by covering a polyurethane elastic yarn with a water-soluble vinylon yarn only as an end cutting process. As a result, it has been found that the cutting process can be suitably performed, and the present invention has been achieved.
In detail, when a yarn obtained by simply covering a polyurethane elastic yarn with a water-soluble vinylon yarn was used as a means for cutting off the end portion, it was easily left in the process after the water-soluble vinylon yarn was dissolved and removed. There is a problem that the polyurethane elastic yarn is broken. A problem arises in that the remaining polyurethane elastic yarn is cut off during the dyeing process and the final setting process during the manufacturing process. In order to solve this problem, the present inventors perform a specific dyeing process and add a returning process, so that the polyurethane elastic yarn is cut off during the dyeing process and the final setting process. Found to prevent.

An object of the present invention is to use a means for dissolving and removing the water-soluble vinylon yarn after knitting a discard portion with a yarn obtained by covering a polyurethane elastic yarn with a water-soluble vinylon yarn as a means for cutting off the end. An object of the present invention is to provide a functional fabric that does not require a cutting instrument or the like when it is cut along the discarding portion, a fabric that has undergone an end treatment, and a method for manufacturing them.
Another object of the present invention is, for example, a functional fabric that can prevent the unraveled yarn from appearing on the cut surface even if it is manually cut, and preventing the entire knitted fabric from being stretched due to excessive tension. An object of the present invention is to provide a treated fabric and a method for producing the fabric.

The invention according to claim 1 is a fabric knitted into a cylindrical shape by a circular knitting machine, and the fabric is continuously knitted in the order of a discard portion, a stretchable narrow portion, and a body fabric. Further, the present invention relates to a functional fabric characterized in that the water-soluble vinylon yarn is dissolved and removed after the knitted yarn is knitted with a polyurethane elastic yarn covered with a water-soluble vinylon yarn.
The invention according to claim 2 relates to the functional fabric according to claim 1, wherein a width of the discard portion is 0.2 to 3 mm.
The invention according to claim 3 is characterized in that the discard part is knitted by a yarn obtained by covering a polyurethane elastic yarn of 10 to 100 denier with a water-soluble vinylon yarn of 30 to 100 denier. It relates to the functional fabric described.
The invention according to claim 4 is an end treatment consisting of a body cloth and a stretchable narrow part, which is manufactured by cutting along the discard part in the functional cloth according to any one of claims 1 to 3. Concerning the applied fabric.

The invention which concerns on Claim 5 is related with the manufacturing method of the functional fabric containing the following processes 1-5.
(1) A step of knitting a tubular fabric by continuously knitting a circular knitting machine in the order of a discarding portion, a stretchable narrow portion, and a body fabric, wherein the discarding portion is a polyurethane elastic yarn (2) A step of dyeing the fabric obtained in step 1 and dissolving and removing the water-soluble vinylon yarn (3) A step of drying the fabric obtained in step 2 (4) A step of returning the fabric obtained in Step 3 to eliminate kinking (5) A step of stretching the fabric so that both sides of the fabric obtained in Step 4 are pulled outward in the lateral direction. A step of obtaining a functional fabric after being applied. The invention according to claim 6 is characterized in that the dyeing in step 2 is performed by a dyeing method such as liquid dyeing that does not apply tension in the longitudinal direction of the fabric. Made of functional fabric as described in It relates to the manufacturing method.
The invention which concerns on Claim 7 is related with the manufacturing method of the fabric which performed the edge part process including the following processes 1-6.
(1) A step of knitting a tubular fabric by continuously knitting a circular knitting machine in the order of a discarding portion, a stretchable narrow portion, and a body fabric, wherein the discarding portion is a polyurethane elastic yarn (2) A step of dyeing the fabric obtained in step 1 and dissolving and removing the water-soluble vinylon yarn (3) A step of drying the fabric obtained in step 2 (4) A step of returning the fabric obtained in Step 3 to eliminate kinking (5) A step of stretching the fabric so that both sides of the fabric obtained in Step 4 are pulled outward in the lateral direction. A step of obtaining a functional fabric after application (6) A step of generating a fabric subjected to an end treatment by cutting along the discarded portion of the functional fabric obtained in the step 5. The invention according to claim 8 The dyeing in step 2 is liquid dyeing. The longitudinally relates to a method of manufacturing a fabric which has been subjected to end processing of claim 7, characterized in that it is carried out by dyeing method not applied tension of the fabric.

  The functional fabric of the present invention is a fabric obtained by knitting a discard portion knitted with a polyurethane elastic yarn covered with a water-soluble vinylon yarn, and the water-soluble vinylon yarn is dissolved and removed. This functional fabric can be easily cut by hand along its litter, and the unraveled yarn does not appear on the cut surface. Is an excellent fabric that is not stretched.

The functional fabric of the present invention is continuously knitted in the order of a discard portion, a stretchable narrow portion, and a body fabric, and the discard portion is made of a polyurethane elastic yarn covered with a water-soluble vinylon yarn. After knitting, the water-soluble vinylon yarn is dissolved and removed.
Hereinafter, the thread used in each part will be described.

As the spun yarn used for the fabric according to the present invention, natural fibers such as cotton yarn, wool and hemp, regenerated fibers such as rayon, cupra and polynosic, semi-synthetic fibers such as acetate, triacetate and promix, polyester, nylon, Examples thereof include synthetic fibers such as acrylic, vinylon, vinylidene, polyethylene, polypropylene, and polyurethane.
These may be either single or mixed. Cotton yarn is particularly suitable, and the thickness is 10 to 80 (20/2 to 160/2), preferably 30 to 60 (60/2 to 120/2). The structure of the knitted fabric is not particularly limited as long as it is a structure that can be knitted by a knitting machine, but milling, smoothing, tengu and the like are preferable.

  The stretchable narrow width portion is knitted at 0: 1 or 1: 1 using a yarn used for the body cloth and a yarn obtained by covering a synthetic long fiber with an elastic yarn such as polyurethane. It is preferable to use a polyurethane elastic yarn of 20 to 50 denier as a yarn obtained by covering the elastic yarn such as polyurethane with a synthetic long fiber, and a polyamide yarn of 20 to 100 denier as a covering yarn.

The water-soluble vinylon yarn used in the discarding section is a fiber that is produced by wet spinning or spinning using polyvinyl alcohol as a main raw material, and is easily dissolved in hot water at 60 to 100 ° C, preferably 70 to 90 ° C. In the present invention, a water-soluble vinylon yarn of 30 to 100 denier, preferably 40 to 80 denier is used.
The polyurethane elastic yarn used in the discarding portion is 10 to 100 denier, preferably 20 to 30 denier.
The discarded portion of the functional fabric of the present invention is knitted with a polyurethane elastic yarn covered with a water-soluble vinylon yarn, and the water-soluble vinylon yarn is melted in the dyeing process and is knitted only with the polyurethane elastic yarn. Yes.

Next, the present invention will be described with reference to the drawings.
FIG. 1 represents the functional fabric of the present invention. In FIG. 1, (1) indicates a body cloth, (2) indicates a stretchable narrow portion, and (3) indicates a discarding portion. Moreover, the arrow in FIG. 1 shows the term "longitudinal direction" used in this specification. Therefore, the term “lateral direction” used in this specification is a direction substantially perpendicular to the arrow in FIG.
The functional fabric of the present invention is continuously knitted in the order of the discard portion (1), the stretchable narrow portion (2) and the body fabric (3), and the discard portion is made of polyurethane elastic yarn. After the water-soluble vinylon yarn is knitted with the covered yarn, the water-soluble vinylon yarn is dissolved and removed.

  In FIG. 1, a fabric knitted twice in the order of a discarding portion (1), a stretchable narrow width portion (2) and a body fabric (3) is shown. The ratio of the width in the vertical direction of the stretchable narrow width portion (2) and the body fabric (3) is not particularly limited, and may be determined as appropriate according to the clothing to be manufactured.

The vertical width of the stretchable narrow portion is not particularly limited, but is preferably 10 to 25 mm, and more preferably 15 to 20 mm.
The width in the longitudinal direction of the discarding part (1) is not particularly limited, but is preferably 0.2 to 3 mm, and more preferably 0.5 to 1.2 mm. Most preferably, the yarn discarding portion (1) is knitted so as to have 2 rounds / 4 stitches.

FIG. 2 shows a fabric subjected to the end treatment of the present invention. In FIG. 2, (2) indicates a stretchable narrow portion, and (3) indicates a body cloth.
That is, the fabric subjected to the end treatment of the present invention refers to a fabric cut along the discard portion of the functional fabric of the present invention.

  The end of the stretchable narrow portion (2) of the fabric subjected to the end treatment of the present invention has an excellent appearance that the unraveled yarn is not noticeable. The reason for this is that, by dissolving and removing the water-soluble vinylon yarn in the discarding portion according to the present invention, only the polyurethane elastic yarn that is not noticeable remains, and the polyurethane elastic yarn can be easily cut off manually. Therefore, unraveling does not occur when the body fabric (3) or the stretchable narrow width portion (2) is forcibly pulled.

Next, the method for producing the functional fabric of the present invention will be described. The method for producing a functional fabric of the present invention includes the following steps 1 to 5.
(1) A step of knitting a tubular fabric by continuously knitting a circular knitting machine in the order of a discarding portion, a stretchable narrow portion, and a body fabric, wherein the discarding portion is a polyurethane elastic yarn (2) A step of dyeing the fabric obtained in step 1 and dissolving and removing the water-soluble vinylon yarn (3) A step of drying the fabric obtained in step 2 (4) A step of returning the fabric obtained in Step 3 to eliminate kinking (5) A step of stretching the fabric so that both sides of the fabric obtained in Step 4 are pulled outward in the lateral direction. The process of obtaining functional fabric after application

In step 1, a fabric is manufactured by continuously knitting in the order of the discard portion, the stretchable narrow portion, and the body fabric. The circular knitting machine used in step 1 is not particularly limited, but a circular knitting machine of 16 to 30 gauge and 10 to 32 mm is preferably used. A cylindrical fabric is knitted by the circular knitting machine.
In step 2, the fabric obtained in step 1 is dyed and the water-soluble vinylon yarn used in the discarding portion is dissolved and removed. In this dyeing process, the dough is immersed in hot water at 70 to 90 ° C.
The dyeing is preferably performed by a dyeing method in which no tension is applied in the longitudinal direction. This dyeing method is performed using, for example, a liquid flow dyeing machine.
In step 3, the dough obtained in step 2 is dried. The drying method is not particularly limited, and examples thereof include a method of drying using a shrink surfer dryer in which no tension is applied in the vertical direction.

  In step 4, return is performed to eliminate the kinking of the dough obtained in step 3. The term “return” refers to returning the kinking (twisting) of the fabric that has occurred during the previous dyeing and drying steps. The reason why this step is performed is as follows. As described above, the discarding portion according to the present invention is knitted by a yarn formed by covering a polyurethane elastic yarn with a water-soluble vinylon yarn. That is, after dissolving and removing the water-soluble vinylon yarn, only the elastic polyurethane yarn is connected to the stretchable narrow portion and the body cloth. As described above, since the polyurethane elastic yarn can be easily torn by hand, if the next step, that is, the setting step of step 5, is performed in a twisted state, the polyurethane elastic yarn is torn. Therefore, by eliminating the kinks before the step 5, the setting step can be efficiently performed without the polyurethane elastic yarn being torn in the step 5.

  The means for “returning” is not particularly limited. For example, there is a method in which the twisted bar-shaped dough is received on the turntable, and the twist is returned by rotating the turntable. When the return is performed by this method, the returned fabric is finally stacked on the turntable. The means for rotating the turntable may be a manual operation or a device that automatically rotates the turntable. For example, panic is used as the device, and the device senses the kinking of the fabric by a sensor and automatically rotates the turntable.

  Step 5 is a setting step. This “set” refers to stretching the fabric in the lateral direction by pulling both ends of the fabric obtained in step 4 outward, thereby recovering the strain of the fabric in steps 1 to 4 above. The width can be restored or the width of the dough can be made constant. Preferably, it is performed by a calendar finishing machine, a soft set machine or the like.

The manufacturing method of the fabric subjected to the edge treatment according to the present invention is, after the final step 5 of the above-described functional fabric manufacturing method, as the step 6 along the dissipating portion of the functional fabric obtained in the step 5. And a step of generating a dough subjected to the edge treatment by cutting it off.
The cutting can be performed manually by, for example, grasping both ends of the discarding part and tearing along the discarding part. Even if the cutting is done manually, a large tension is not required, and the entire fabric Will never grow. Further, it is possible to obtain an end-treated fabric having an excellent appearance in which the unwound yarn is hardly noticeable at the end after being cut off.

Hereinafter, the present invention will be described in detail based on examples.
Example 1
Using a circular knitting machine (18 gauges, 840, 15 吋, 2 ports), a 20-denier polyurethane elastic yarn and a 75-denier water-soluble vinylon yarn were wound to knit a throwing portion of only two rounds (about 1 mm). Next, a 40 cm cotton yarn and a 40 denier polyurethane elastic yarn covered with 70 denier polyamide were used as a 1: 1, and a 2.0 cm stretchable narrow part was knitted, and then the 40 th cotton yarn was used. A 60cm body fabric was knitted by milling. After that, it was returned to the starting state, and this was repeatedly knitted for about 70 m to make one roll, soaked in hot water at 90 ° C., dyed the fabric in the dyeing process, and dissolved the water-soluble vinylon yarn of the discard part. The dough was dried. In addition, a twisting process and a stretching process are performed through a returning process for eliminating the kinking of the fabric, and then stretching the fabric by pulling both sides of the fabric obtained in the process 4 outward in the lateral direction. A fabric having a pitch of 62 cm between the narrow portion and the body fabric was obtained.

(Example 2)
Using a circular knitting machine (18 gauge 900 pcs, 16 吋 4 ports), a 20-denier polyurethane elastic yarn and a 75-denier water-soluble vinylon yarn were wound to form a two-round (about 1 mm) discard portion. Next, a 50 cm cotton yarn and a 20 denier polyurethane elastic yarn covered with 50 denier polyamide were used as a 1: 1, and a 2.0 cm stretchable narrow part was knitted, followed by milling using the 50th cotton yarn. A 60cm body fabric was knitted. After that, it was returned to the starting state, and this was repeatedly knitted for about 70 m to make one roll, soaked in hot water at 90 ° C., dyed the fabric in the dyeing process, and dissolved the water-soluble vinylon yarn of the discard part. The dough was dried. In addition, a twisting process and a stretching process are performed through a returning process for eliminating the kinking of the fabric, and then stretching the fabric by pulling both sides of the fabric obtained in the process 4 outward in the lateral direction. A fabric having a pitch of 62 cm between the narrow portion and the body fabric was obtained.

(Comparative Example 1)
It was produced in the same manner as in Example 1 except that a 20-denier polyurethane elastic yarn and a 10-denier polyamide yarn covered with a 75-denier water-soluble vinylon yarn were used as the discard portion.

(Comparative Example 2)
This was produced in the same manner as in Example 2 except that a 10-denier polyurethane elastic yarn and a 20-denier polyamide yarn were covered with a 75-denier water-soluble vinylon yarn.

(Comparative Example 3)
It was manufactured by the same method as in Example 1 except that the returning step was not performed.

It cut off manually along the discard part of Examples 1 and 2 and Comparative Examples 1 and 2, and the degree of unraveling of the cutting work and the cutting part was evaluated.
Examples 1 and 2 could be easily cut off by hand, that is, by tearing both ends along the yarn-removal part, and the entire fabric was not stretched at the time of cutting. Further, the unwound yarn was hardly noticeable at the end after being cut off.
On the other hand, in Comparative Examples 1 and 2, when trying to cut off manually, the entire fabric was subjected to strong tension and extended. Although we were able to finally cut it off by tearing the fabric close to the cut surface along the scrapping part and gradually tearing the fabric, due to the extra tension at the time of cutting, the end of the fabric after cutting was waved, The unraveled yarn was also conspicuous.

  The fabric obtained in Comparative Example 3 was partially cut along the discarded yarn part in the final setting step. Therefore, since the dough could not be uniformly stretched during the setting process, the width of the dough could not be restored, and the appearance of the obtained dough was not preferable.

It is a top view of the functional cloth of the present invention. It is a top view of the cloth which performed the end treatment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Waste yarn part 2 ... Elastic narrow part 3 ... Body cloth

Claims (8)

  A fabric knitted into a cylindrical shape by a circular knitting machine, wherein the fabric is continuously knitted in the order of a discarding portion, a stretchable narrow portion and a body fabric, and the discarding portion is made of polyurethane elastic A functional fabric, wherein the water-soluble vinylon yarn is dissolved and removed after knitting with a yarn obtained by covering the yarn with a water-soluble vinylon yarn.   2. The functional fabric according to claim 1, wherein a width of the discard portion is 0.2 to 3 mm.   The functional fabric according to claim 1 or 2, wherein the discard portion is knitted by a yarn obtained by covering a polyurethane elastic yarn of 10 to 100 denier with a water-soluble vinylon yarn of 30 to 100 denier.   A fabric that has been subjected to an end treatment consisting of a body fabric and a stretchable narrow portion, which is produced by cutting along the spun portion of the functional fabric according to any one of claims 1 to 3. The manufacturing method of functional fabric including the following processes 1-5.
(1) A step of knitting a tubular fabric by continuously knitting a circular knitting machine in the order of a discarding portion, a stretchable narrow portion, and a body fabric, wherein the discarding portion is a polyurethane elastic yarn (2) A step of dyeing the fabric obtained in step 1 and dissolving and removing the water-soluble vinylon yarn (3) A step of drying the fabric obtained in step 2 (4) A step of returning the fabric obtained in Step 3 to eliminate kinking (5) A step of stretching the fabric so that both sides of the fabric obtained in Step 4 are pulled outward in the lateral direction. The process of obtaining functional fabric after application   6. The method for producing a functional fabric according to claim 5, wherein the dyeing in the step 2 is performed by a dyeing method such as liquid flow dyeing that does not apply tension in the longitudinal direction of the fabric. The manufacturing method of the fabric which performed the edge part process including the following processes 1-6.
(1) A step of knitting a tubular fabric by continuously knitting a circular knitting machine in the order of a discarding portion, a stretchable narrow portion, and a body fabric, wherein the discarding portion is a polyurethane elastic yarn (2) A step of dyeing the fabric obtained in step 1 and dissolving and removing the water-soluble vinylon yarn (3) A step of drying the fabric obtained in step 2 (4) A step of returning the fabric obtained in Step 3 to eliminate kinking (5) A step of stretching the fabric so that both sides of the fabric obtained in Step 4 are pulled outward in the lateral direction. Step of obtaining functional fabric after application (6) Step of generating fabric subjected to end treatment by cutting along the discarded portion of functional fabric obtained in step 5 The method for producing a fabric subjected to edge processing according to claim 7, wherein the dyeing in the step 2 is performed by a dyeing method such as liquid flow dyeing that does not apply tension in the longitudinal direction of the fabric.

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