JP3014846U - Molded shoes - Google Patents

Abstract

(57) [Abstract] [Purpose] A circular knitted fabric 2 made of synthetic fiber is used, and a part thereof is fused within ± 45 degrees of the course direction, and the fused portion is attached to the toe part 5 of the shoe. Since the outside of the knit is integrally molded with the outer layer portion 3 made of resin or rubber,
Provided at low cost is a comfortable molded shoe 1 in which convex portions such as seams are pressed to a minimum. [Construction] Molded shoe 1 has a synthetic thread on the inner surface of which is a circular knitted fabric 2
And the outer layer portion 3 made of resin or rubber, etc. are integrally formed. It may include a shoe sole 9 including the heel 8 and a decorative portion. The processed yarn circular knitted fabric 2 made of synthetic fiber is seamless since there is substantially no sewn portion on the inner surface of the shoe. Further, the synthetic fiber processed yarn circular knitted fabric 2 is fused at two points of the toe portion 5 and the shin portion (the opening portion of the shoe) 4 of the foot, and the toe portion 5
In, the fusing part is fused and integrated along the toe line on the bottom of the shoe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to molded shoes such as boots, boots, and half boots. More specifically, the present invention relates to a molded shoe having an inner surface made of a synthetic fiber knitted fabric, and a resin or rubber integrally molded on the outer side thereof.

[0002]

[Prior art]

 Molded shoes with cloth inside have been used since they feel good and are warm. In the conventional manufacturing process, cloth is cut to a pattern paper, sewn into a cylinder, mounted on a mold, and a soft resin such as vinyl chloride resin or rubber is made to exist around the periphery by injection molding, etc. It was manufactured by heating, molding into a certain shape, removing the mold, removing burrs, and inspecting. The fabric used in the conventional method is a woven fabric obtained by spinning short fibers of cotton or synthetic fiber, a wide circular knit fabric with a large number of yarns, or a warp knit using a yarn made into a long fiber or a short fiber spun yarn. The ground and other non-woven fabrics were used.

[0003]

[Problems to be solved by the device]

 However, in the conventional molding method, in order to match the cloth with the mold, the paper pattern is fitted to the cloth, cut and sewn. For this reason, there is a problem that one or more sewn points are present or the sewn part becomes long, and the parts are raised as convex parts, resulting in uncomfortable wearing. In addition, the sewn portion of the convex portion is liable to be soiled and easily rubbed and broken. Further, there is a problem that the production process is long and requires a lot of manpower, and the manufacturing cost is high. Further, when a knitted fabric is used, there is also a problem that it is necessary to select a material to prevent the occurrence of run-shaped (streak) knitting defects when cutting and breaking the stitch.

The present invention provides a molded shoe which is comfortable to wear with the protrusions such as seams pressed down to a minimum, and the manufacturing cost is greatly increased when the cloth is attached to the mold and the resin or rubber is integrally molded. It is an object of the present invention to provide a molded shoe that has been reduced in size.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the molded shoe of the present invention is a molded shoe using a synthetic fiber knitted fabric, wherein the knitted fabric is a cylindrical circular knitted fabric consisting of one yarn or several yarns, and Part of it is melted within ± 45 degrees in the course direction, the melted part is attached to almost the tip part (toe part) of the shoe, and the outside of the knit is integrally molded with resin or rubber. And

In the above structure, the tubular circular knitted fabric is composed of the fluid-processed yarn in which the synthetic fibers are long-fiber multifilament yarns, and the long-fiber multifilament yarns have closed loops and / or open loops. Is preferably used.

Further, in the above-mentioned constitution, the cylindrical circular knitted fabric made of the temporary twisted bulky yarn in which the synthetic fiber is the long-fiber multifilament yarn and the expansion / contraction expansion ratio of the long-fiber multifilament yarn is 30% or more is used. Is preferably provided.

Further, in the above structure, the synthetic fiber is a plurality of long-fiber multifilament yarns, and the yarn length difference between them is 4% to 50%, and the plurality of long-fiber multifilament yarns. It is preferable to use a tubular circular knitted fabric composed of temporary twist composite yarns that are bound together.

Further, in the above structure, it is preferable that the knitted fabric is a tubular circular knitted fabric that is knitted with one yarn or several yarns.

[0010]

[Action]

 According to the configuration of the present invention described above, a knitted fabric made of synthetic fiber is used, the knitted fabric is a circular knitted fabric, and a part of the knitted fabric is melted within ± 45 degrees of the course direction, and the melted portion is the shoe Since the outer circumference of the knitted fabric is integrally formed with resin or rubber and is attached to almost the tip (toe), a molded shoe with a comfortable fit in which projections such as seams are pressed to a minimum can be realized. Further, it is possible to significantly reduce the manufacturing cost when the cloth is attached to the mold and the resin or the rubber is integrally molded. The term "within ± 45 degrees in the course direction" means the angle between the course direction and the angle drawn by a straight line from the fusing start portion of the body of the circular knitted fabric (cylindrical knitted fabric) to the tip (toe). Good, the fusing line can be straight or curved.

That is, since the knitted fabric made of synthetic fiber is used, it is possible to prevent the cut portion from being frayed by cutting (melting) while melting. Since the tubular circular knitted fabric is fused and cut in the course direction, there is no sewing portion in the lengthwise direction of the tubular circular knitted fabric. That is, it is seamless. Therefore, the conventional manufacturing process can be significantly streamlined, and the manufacturing cost of the cutting portion can be significantly reduced. In addition, because it uses circular knitted fabric, it has stretchability (stretchability), so cutting and sewing according to the pattern are not necessary when it is attached to the mold. Also, by fitting the tip of the tubular circular knitted fabric to the toe of the mold, the mounting becomes easy.

Furthermore, in order to cover the cylindrical circular knitted fabric on the mold, there are a portion for extending the circular knitted fabric (for example, a heel portion) and a portion for contracting the circular knitted fabric (for example, an ankle portion). Part may be cut or broken. In this case, run-shaped (streak) knitting defects are likely to occur, but the run can be suppressed by using the synthetic fiber knitted fabric of the present invention. In addition, there is no leakage of the glue material and resin from the run portion, and it is possible to prevent quality deterioration.

Further, in the toe portion, the fusing part is integrally fused and attached along the toe line on the bottom of the shoe. Therefore, the part where the thickness of the fabric is melted and raised to the convex part is one place of the course part of the cylindrical circular knitted fabric, and if it is placed in the corner part where the skin does not come into direct contact with the toes. Very comfortable to wear.

In the above, the tubular circular knitted fabric made of a fluid-processed yarn, wherein the synthetic fiber yarn is a long-fiber multifilament yarn, and the long-fiber multifilament yarn has a closed loop and / or an open loop. According to the preferable example of being used, there is no leakage of the adhesive material and the resin from the stitches, it is possible to further prevent the occurrence of runs, and it is possible to realize a molded shoe which is comfortable to wear.

Further, in the above description, the synthetic fiber yarn is a long-fiber multifilament yarn, and a cylindrical circular knitted fabric made of a temporary twisted bulky yarn having a stretchable expansion ratio of the long-fiber multifilament yarn of 30% or more is used. According to the preferable example described above, the stretchability is high, the occurrence of run-shaped (streak) knitting defects can be prevented, and the quality of the adhesive material and the resin can be prevented from being leaked from the run portion.

Further, in the above, the synthetic fiber yarn is a plurality of long-fiber multifilament yarns, and the yarn length difference between them is 4% to 50%, and the plurality of long-fiber multifilament yarns. According to a preferable example in which a cylindrical circular knitted fabric composed of temporary twist composite yarns which are bound to each other is used, there is no leakage of glue material or resin from the stitches and it is possible to further prevent the occurrence of run. You can achieve something comfortable to wear.

Further, in the above, a tubular circular knitted fabric in which one knitted fabric is knitted or a few knitted yarns are knitted can be used.

[0018]

【Example】

 The present invention will be described more specifically with reference to the following examples. FIG. 1 is a sectional view of a molded shoe according to an embodiment of the present invention. In FIG. 1, a molded shoe 1 is integrally formed with a circular knitted fabric 2 made of synthetic fiber on the inner surface and an outer layer portion 3 made of resin or rubber. Of course, the shoe may include a shoe sole portion 9 including the heel portion 8 necessary for a normal shoe, a decorative portion, and the like. The synthetic fiber processed thread circular knitted fabric 2 is a seamless, with substantially no sewn portion on the inner surface of the shoe. Further, the synthetic fiber processed yarn circular knitted fabric 2 is fused at two places, a toe portion 5 and a shin portion (the opening portion of the shoe) 4 of the foot. It is attached by being fused and integrated along the toe line. The fused part of the circular knitted fabric of the shin part (shoe opening) 4 of the foot is opened and cut after being integrally molded, or folded back to the outside (between the circular knitted fabric 2 and the outer layer part 3). If you leave it, it will be comfortable to wear. Furthermore, the circular knitted fabric 2 is stretched at the heel portion 7 and contracted at the ankle portion 6, but no run-shaped (streak) knitting defects occur and no leakage of the paste material or resin from the run portion. .

Next, the manufacturing process will be described. First, a tubular circular knitted fabric with one or several yarns is manufactured. The tubular circular knitted fabric may be a fabric or a dyed product. The tubular circular knitted fabric is knitted into a size that fits the diameter of the mold used. Next, the tubular circular knitted fabric is fused in the course direction. Here, the course direction means a direction shown by an arrow C in FIG. 2A, which is orthogonal to an axial direction (a length direction: also referred to as a wale (arrow W)) of the cylindrical circular knitted fabric 10 which is a material. Direction. In other words, it means the yarn feeding direction F or F ′ of the yarn shown in FIG. 2 (b) which is an enlarged view of FIG. 2 (a). The fusing should be within ± 45 degrees in the course direction. In the case of synthetic fibers, the cutting is performed at a temperature equal to or higher than the melting point of the polymer used by cutting while melting. For example, in the case of polyethylene terephthalate, the melting point is about 260 ° C or higher, and in the case of nylon 6, it is about 220 ° C or higher. The fusion should be done at two points, one corresponding to the toe part and the other corresponding to the shin (opening of the shoe) of the foot. As shown in FIG. 3, the circular knitted fabric 10 of the material component is fused at two points of the toe portion 15 and the shin of the foot (the opening of the shoe) 14, and at the toe portion 15, the fused portion is the shoe. Melt and flatten along the toe line on the bottom of the. That is, the cut surfaces are bonded by fusion.

Next, the fused circular knitted fabric is mounted on a mold. Then, for example, a soft resin such as vinyl chloride resin or rubber powder is applied around the circular knitted fabric and pressure heat molding is performed, or it is molded into a predetermined shape by injection molding, and the mold is removed to remove burrs and the like. Remove, shape, inspect and complete.

Next, the fibers used will be described. The fibers that can be used in the present invention are synthetic fibers made of thermoplastic polymers. For example, polyester fibers such as polyethylene terephthalate (PET) and polybutylene terephthalate, nylon fibers such as nylon 6, nylon 6,6 and polyolefin fibers such as polypropylene can be used. The shape of the fiber may be filament (long fiber) or spun yarn (short fiber). When long filament multifilament yarn is used, it is preferable to use textured yarn. The following examples can be given as the textured yarn. (A) Fluid processed yarn (for example, "Taslan" processed yarn): This fluid processed yarn is obtained, for example, by subjecting a long-fiber multifilament yarn to turbulent flow treatment or entanglement treatment using pressurized air or the like. Fluid-processed yarns typically have fine monofilament loops, either closed loops (closed loops), open loops (open loops), or a mixture of closed and open loops. There is. Any fluid processed yarn can be used in the present invention. (B) Temporary twisted bulky yarn (for example, "Wooly" processed yarn): This temporary twisted bulky yarn is provided with fine crimps by heat-treating, for example, long fiber multifilament yarn while false twisting. can get. As the temporary twisted bulky yarn, it is preferable that the stretchable elongation ratio is 50% or more. (C) Temporary twist composite yarn: This temporary twist composite yarn is obtained by preparing at least two long-fiber multifilament yarns and subjecting them to entanglement using, for example, pressurized air. As another method, it can be obtained by preparing at least two long-fiber multifilament yarns and heat-treating them while false twisting them. Two long-fiber multi-filament yarns are fed at different feed rates, or by using yarns with different heat shrinkage ratios or yarns with different elongations, the yarn length difference is bound in the range of 4% to 50%. It is preferable to use a temporary twist composite yarn.

A specific example will be described below. (Example 1) Polyester (PET) filament 150 denier 96 filament yarn was processed under processing conditions (winding yarn speed: 300 m / min, twisting twister rotation speed: 800,000 rpm, twist number: 2200T). / M, feed rate of supplied yarn: 0%, temperature of hot plate placed in twisting zone: 200 ° C), temporary twisting is performed using a temporary twisting bulky yarn with an expansion / contraction elongation rate of 30% to 120%. A cylindrical circular knit fabric having a yarn feed of 22 gauge and a diameter of 3 inches was made. This tubular circular knitted fabric was flattened and melted with a metal heated to 400 ° C. with a width of 3 mm in the course direction. The tubular circular knitted fabric was attached to the toe part of the long rubber shoe for molding. Next, according to a conventional method, a soft vinyl chloride resin powder is applied around the circular knitted fabric and pressure-molded by heating, the mold is removed, burrs are removed, the shape is adjusted, and the boots are inspected ( (Boots) was completed. As a result, run-like (streak) scratches did not occur, and seamless knitted fabric with no unevenness was integrated inside, and molded boots with good comfort were completed. Also, the cost could be reduced.

Example 2 Long fiber of nylon 6: Air turbulent flow using two 70 denier 34 filaments A boot was manufactured by the same process as in Example 1 using a processed yarn (“Taslan” yarn). As a result, a very good molded shoe was obtained as in Example 1.

(Comparative Example 1) A circular knit having a diameter of about 1 m was cut and sewn with a sewing machine to be formed into a shape close to a foot shape, and a boot was manufactured in the same manner as in Example 1. As a result, a part of the knitted fabric was ruptured when it was mounted on the mold, and run-shaped (streak) scratches were generated from that part, and the resin or glue material jumped out from that part and the quality deteriorated. This is probably because the elasticity of the sewn portion in the lengthwise direction of the tubular knitted fabric was reduced. In addition, the sewn parts were convex, making it uncomfortable to wear and costly.

[0025]

[Effect of device]

 As described above, according to the present invention, a circular knitted fabric made of synthetic fiber is used, and a part of the knitted fabric is melted within ± 45 degrees of the course direction, and the melted portion is almost the tip (toe) of the shoe. Part) and the outer side of the knitted fabric is integrally molded with resin or rubber, so that a molded shoe with a comfortable fit in which convex portions such as seams are pressed to a minimum can be realized. Further, it is possible to significantly reduce the manufacturing cost when the cloth is attached to the mold and the resin or the rubber is integrally molded.

In the above, the tubular circular knitted fabric made of fluid-processed yarn, wherein the synthetic fiber yarn is a long-fiber multifilament yarn, and the long-fiber multifilament yarn has a closed loop and / or an open loop. According to the preferable example of being used, there is no leakage of the resin or the sizing material from the stitches, the occurrence of runs can be prevented, and a molded shoe that is comfortable to wear can be realized.

Further, in the above description, the synthetic fiber yarn is a long-fiber multifilament yarn, and a tubular circular knitted fabric made of a temporary twisted bulky yarn having a stretching expansion ratio of the long-fiber multifilament yarn of 30% or more is used. According to the preferred example, the occurrence of run-shaped (streak) knitting defects can be further prevented, the stretchability is also provided, and the quality of the adhesive material and the resin can be prevented from being leaked from the run portion.

Further, in the above, the synthetic fiber yarn is a plurality of long-fiber multifilament yarns, and the yarn length difference between them is 4% to 50%, and the plurality of long-fiber multifilament yarns. According to a preferable example in which a cylindrical circular knitted fabric made of temporary twist composite yarns which are bound to each other is used, there is no leakage of resin or paste material from the stitches and it is possible to further prevent the occurrence of run. Along with that, you can achieve something that is comfortable to wear.

Further, in the above description, a tubular circular knitted fabric in which one knitted fabric or a few knitted fabrics are knitted is used.

[Brief description of drawings]

FIG. 1 is a sectional view of a molded shoe according to an embodiment of the present invention.

2 (a) is an explanatory view showing a cylindrical circular knitted fabric according to an embodiment of the present invention, and FIG. 2 (b) is a partially enlarged view of a portion A of FIG. 2 (a).

FIG. 3 is a diagram showing a process of fusing a cylindrical circular knitted fabric according to an embodiment of the present invention.

[Explanation of symbols]

 1 Molded shoes 2 Synthetic fiber circular knitted fabric 3 Outer layer part 4,14 Foot shin (shoe opening) 5,15 Toe part 6 Ankle part 7,8 Heel part 9 Sole bottom 10 Cylindrical circular knitted material C Course direction W Wale direction F, F'Yarn feeding direction

Claims (5)

[Scope of utility model registration request] 1. A molded shoe using a synthetic fiber knitted fabric, wherein the knitted fabric is a circular knitted fabric, and a part of the knitted fabric is fused within ± 45 degrees of a course direction, and the fused portion is a shoe A molded shoe, which is attached to substantially the front end portion (toe portion), and the outer side of the knitted material is integrally molded with resin or rubber. 2. A tubular circular knitted fabric made of fluid-processed yarn, wherein the synthetic fiber is a long fiber multifilament yarn, and the long fiber multifilament yarn has a closed loop and / or an open loop. The molded shoe according to claim 1. 3. A tubular circular knitted fabric made of a temporary twisted bulky yarn having synthetic fibers which are long-fiber multifilament yarns, and which has an expansion / contraction expansion ratio of 30% or more. Molded shoes described in. 4. The synthetic fiber is a plurality of long-fiber multifilament yarns, and the yarn length difference between them is 4% to 50%.
The molded shoe according to claim 1, wherein a tubular circular knitted fabric made of a temporary twist composite yarn in which the plurality of long-fiber multifilament yarns are bound together is used. 5. The molded shoe according to claim 1, wherein the knitted fabric is a tubular circular knitted fabric knitted with one yarn or several yarns.