JP3805343B2 - Method for manufacturing edge of circular knitted fabric - Google Patents

Description

  The present invention is to manufacture an edge portion of a circular knitted fabric in which fraying does not occur in the cut portion by cutting the yarn-removal portions knitted on the upper and lower ends of the tubular knitted fabric using a circular knitting machine. It is about the method.

  Conventionally, fabrics knitted into a cylindrical shape using a circular knitting machine have been mainly used for trunks and sleeves, such as underwear, because of the structure of the knitting structure, so In some cases, the bottom part of the shape part is used without being cut off. In that case, overlock sewing is performed so that the edge portion cannot be unraveled, folded back and sewn, and other fabrics such as tape and lace are sewn. Not only is it bad, but there are problems such as a sense of incongruity due to the stitched portion protruding.

  Therefore, as a cylindrical knitted fabric with a smooth edge and an appropriate stretchability, a polyurethane elastic yarn covered with synthetic fiber is knitted into a part of the knitted fabric, and a water-soluble yarn at the boundary. However, in this case, a special apparatus is required for knitting and processing the fabric and the productivity is poor.

As another method, a melt-bonded yarn that is melted by heating and fixed at room temperature is knitted into several courses serving as edge portions, and the melt-bonded yarn is melted by heating, and a loop of non-melted yarn is obtained by the melted yarn. There is a method of preventing unraveling by fixing the contacts. (For example, Patent Document 1)
Japanese Patent Publication No.57-179929

  However, although the heat-bonding force of the treated part increases with the increase in the content of hot-melt yarn, the deterioration of the texture is inevitable along with it, and the melt-bonded yarn is not a general-purpose product. There was a problem that there was little room for selection and the cost was high.

  The present invention was developed with the object of solving the above-mentioned problems. In addition to knitting a yarn disposal portion that cannot be unraveled by cutting at the edge of a circular knitted fabric, a special device is provided. It is an object of the present invention to provide a method for producing an edge portion of a circular knitted fabric having a good texture and feel without using the edge portion of the circular knitted fabric by using simple means.

  As means for solving the above-mentioned problems and achieving the object, the present invention uses a circular knitting machine to knit a cylindrical knitted fabric that becomes a body fabric with spun yarn, and at the edge of the cylindrical knitted fabric. , Knit a stretchy narrow knitted fabric with body yarn and elastic yarn covered with synthetic long fiber on synthetic rubber, then knitted a yarn with synthetic rubber covered with water-soluble vinylon, The manufacturing method of the edge part of the circular knitted fabric characterized by applying a finishing process to dissolve and remove the water-soluble vinylon by opening the long body fabric or the body fabric by repeating this process was developed and adopted.

  Moreover, in the knitting method of the edge part of the circular knitted fabric configured as described above, the stretchable narrow knitted fabric is a body fabric yarn and an elastic yarn obtained by covering a synthetic rubber with a synthetic long fiber 0: 1, 1: 1. , 1: 2 or 2: 1 method for producing edge of circular knitted fabric, and synthetic rubber of circular yarn is knitted with polyurethane elastic yarn and 10-50 denier polyamide yarn A manufacturing method for the edge of the ground was developed and adopted.

  The present invention can be used without being cut if the end portion of the circular knitted fabric is cut, and can be used for underwear, foundations, and other suitable knitted fabrics. No special equipment is required, and the processing method can be rationally produced as in normal processing.

  As the spun yarn used for the circular knitted fabric which is the body fabric of the present invention, any yarn such as cotton yarn, wool, hemp and other natural fibers, rayon, polyamide, polyester, acrylic, polypropylene, vinyl chloride can be used. These may be used alone or in combination. Among them, cotton yarn is suitable, and the thickness is in the range of 10 to 80. The knitted fabric structure may be any structure as long as it can be knitted by a knitting machine, but milling, smoothing, tengu and the like are preferable.

  The stretchable narrow part knitted following the body fabric is made of elastic yarn such as cotton yarn and FTY (polyurethane elastic yarn covered with nylon, polyester, etc.) and other elastic yarns of 0: 1, 1: 1, 1: It is organized in 2 or 2: 1. It is preferable to use cotton yarn having a yarn count of 10 to 80 and FTY yarn of 20 to 120 denier.

  The water-soluble vinylon 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 70 to 90 ° C. The waste yarn part is formed by covering and knitting 20 to 120 denier polyurethane elastic yarn, 10 to 50 denier polyamide yarn and 30 to 100 denier water-soluble vinylon yarn, and then dissolving the water-soluble vinylon yarn in the dyeing process. Are organized.

Hereinafter, specific examples of the present invention will be described.
Using a circular knitting machine (Fukuhara Seiki Co., Ltd., 18 gauge, 900 pieces, 16 ４８ 48 units), 40cm cotton yarn is used to knit a 60cm body fabric 1, followed by 40th cotton yarn and 70 denier. Polyurethane elastic yarn with 40 denier polyamide covering yarn 1: 1 and knitted stretchable narrow part 2 of 1.2 cm, followed by 40 denier polyurethane elastic yarn and 10 denier polyamide yarn with 50 denier A water-soluble vinylon yarn was wound to form a 0.5 cm discard portion 3. After that, it is returned to the start state, and this is repeatedly knitted for about 80 m to make one, and it is immersed in hot water at 90 ° C. in the dyeing process to dissolve the water-soluble vinylon yarn of the discard part 3 and dyeing and finishing it. A cloth having a pitch of 2 cm, a width part 2, a discarding part 3 and a body cloth 1 was obtained.

  It was suitable for the use of the arranged hem, sleeve inner, and outer without breaking, although the end portion was cut off by cutting the waste part 3 of the body cloth 1 with a roll cutter.

  Using a circular knitting machine (Fukuhara Seiki Co., Ltd., 18 gauge, 1680, 30cm, 72 units), 40cm cotton yarn is used to knit a 60cm body fabric 1, followed by 40th cotton yarn. A denier polyurethane rubber yarn is knitted with a 40 denier polyamide covering yarn (FTY) 1: 1 and a stretchable narrow portion 2 of 1.2 cm, followed by a 40 denier polyurethane rubber yarn and a 10 denier polyamide yarn. In addition, knitting 12 courses with 50 denier water-soluble vinylon yarn, returning to the original 40th, repeatedly knitting about 40 m to make one piece, dyed in 90 ° C hot water and dissolved the water-soluble vinylon yarn, polyurethane Only the yarn is discarded. Then, when the warp was opened, a stretchable narrow width part 2, a 12-course polyurethane discard part 3 and a body cloth 1 having a pitch of 60 cm were obtained.

  It was suitable for the use of the arranged hem, sleeve inner, and outer without being unraveled although the end portion was cut off by cutting the discard portion 3 with a roll cutter.

Comparative Example 1

  Using a circular knitting machine (Fukuhara Seiki Co., Ltd., 18 gauge, 900 pieces, 16 ４８, 48 units), knitting a 60cm fabric with milling using 40th cotton yarn, followed by 40th cotton yarn and 70 denier Polyurethane elastic yarn with 40 denier polyamide covering yarn 1: 1 and knitted stretchable narrow part of 1.2cm, then knitted all around 12 courses uniformly with 100 denier water-soluble vinylon yarn, then start It was returned to the state, and this was repeatedly knitted for 80 m to make one, and it was immersed in hot water at 90 ° C. by dyeing to dissolve the water-soluble vinylon yarn to obtain a body fabric having a height of 60 cm.

  According to the comparative example 1 described above, each part having a height of 60 cm was separated into pieces, resulting in parts dyeing and parts finishing set, and the workability was complicated and work efficiency was deteriorated.

Comparative Example 2

  Using a circular knitting machine (Fukuhara Seiki Co., Ltd., 18 gauge, 1680, 30cm, 72 units), knitting a 60cm body fabric with milling using 40th cotton yarn, followed by 40th cotton yarn and 70 denier Polyurethane rubber yarn, 40 denier polyamide covering yarn (FTY) is knitted with a stretchable narrow part of 1.2cm at 1: 1, followed by 30 denier polyester filament yarn for 1 course Knitting, return to the original 40th. This was repeated to knit about 40 m to make one roll, and after normal processing, the polyester filament yarn was pulled out in the sewing process to obtain a 60 cm pitch body fabric.

  According to Comparative Example 2 described above, the polyester filament yarn was difficult to be pulled out. In fact, the polyester filament yarn was not smoothly pulled out, and the work efficiency was deteriorated.

  As mentioned above, although main embodiment of this invention was described, this invention is not limited to these implementation, In the range which can achieve the objective of this invention and does not deviate from the summary of this invention, it is various. It is possible to make various design changes, and these are all included in the scope of the present invention.

  The present invention can be used not only for inners such as camisole, French and tank top, but also for clothing such as outerwear.

It is a top view of the circular knitted fabric obtained with the manufacturing method of this invention.

Explanation of symbols

1 Body fabric 2 Elastic narrow part 3 Spun part

Claims (3)

  A circular knitting machine is used to knit a tubular knitted fabric body with spun yarn, and at the edge of the body fabric, a stretchable narrow width with a body fabric yarn and a synthetic rubber covered elastic yarn Knitting the part, and then knitting the yarn with the synthetic rubber covered with water-soluble vinylon, and repeating this, the long body fabric or its body fabric is opened to dissolve and remove the water-soluble vinylon A method for producing an edge portion of a circular knitted fabric, characterized by performing a finishing process.   2. The circle according to claim 1, wherein the stretchable narrow part is knitted with a body fabric thread and an elastic thread obtained by covering a synthetic rubber with a synthetic long fiber in a ratio of 0: 1, 1: 1, 1: 2 or 2: 1. Manufacturing method of edge part of knitted fabric. The manufacturing method of the edge part of the circular knitted fabric of Claim 1 or 2 with which the synthetic rubber of the discard part was knitted with the polyurethane elastic yarn and the polyamide yarn of 10-50 denier.

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