Knitted product and method for manufacturing knitted product

Abstract

Provided are: a knitted product that uses natural fiber yarns and / or synthetic fiber yarns and that can effectively suppress expansion and contraction of ground yarns without using a large-scale heat treatment device; and a method for manufacturing the knitted product. A heat-welded yarn that melts at 105 DEG C or less is welded to all or part of the ground yarn, and the ground yarn is a natural fiber yarn and / or a synthetic fiber yarn. The heat fusion yarn is woven into all or part of the ground yarn, and a knitted product in a state in which the heat fusion yarn is not melted is effectively manufactured by molding using a flat knitting machine. Since the heat-fused yarn is fused at 105 DEG C or less, the heat-fused yarn can be fused by a steam iron without using a large-scale heat treatment device, and the heat-fused yarn and the ground yarn can be fused. Since the heat fusion yarn is fused in the ground yarn of the knitted product, the expansion and contraction of the ground yarn can be suppressed.

Description

Technical Field

[0001] The present invention relates to knitted products such as pullovers and cardigans. Background Art

[0002] As circular knitted fabrics used for knitted products such as auxiliary underwear products such as tights, leggings and bras, and compression clothing such as sports tights and sports underwear, there are fabrics having high-stretch portions and low-stretch portions (for example, see Patent Document 1).

[0003] In the circular knitted fabric of Patent Document 1, the ground yarn is the same in the low elongation part and the high elongation part, the low elongation part contains a heat-melting yarn, and at least a part of the heat-melting yarn is heat-melted to each other. As the ground yarn in the circular knitted fabric of Patent Document 1, elastic yarns such as polyurethane and polyetherester can be used. The heat-melting yarn in the circular knitted fabric of Patent Document 1 is a fiber having the property of melting and welding by heat treatment at 120°C for 1 minute with dry heat or at 110°C for 30 seconds with wet heat, and polyamide fibers, polyester fibers, polyurethane fibers, etc. can be used.

[0004] Prior art literature Patent Literature Patent Document 1: Japanese Patent No. 5688240 Summary of the invention

[0005] Technical problem to be solved by the invention Knitting has advantages over fabrics, such as high elasticity, softness, and good heat preservation, because the loops are continuously connected.

[0006] However, all knitted products using natural fiber yarns and / or synthetic fiber yarns have disadvantages such as stretching due to gravity when hung on a hanger, being easily out of shape, and shrinking due to washing.

[0007] In particular, in the case of knitted products using natural fiber yarns, when washed, the hydrophilic fibers absorb water and become thicker and shorter, and may shrink by, for example, about 10%.

[0008] Furthermore, when the natural fiber yarn is wool, there is a disadvantage that when the knitted product is washed with water or the like, the fibers are entangled and shrink (felt) due to the application of forces such as rubbing, friction, and pressing in a wet state.

[0009] In knitted products such as pullovers and cardigans using natural fiber yarns and / or synthetic fiber yarns, when the heat-welding yarn in the circular knitted fabric of Patent Document 1 is used to suppress the expansion and contraction of the ground yarn, it is necessary to perform a heat treatment at 120° C. for 1 minute at dry heat or at 110° C. for 30 seconds at wet heat in order to fuse the heat-welding yarn to the ground yarn. When the heat treatment is performed at 120° C. for 1 minute at dry heat or at 110° C. for 30 seconds at wet heat, the fibers of the natural fiber yarns and / or synthetic fiber yarns used in the knitted products may be damaged, thereby impairing the hand feel.

[0010] In addition, in order to perform a heat treatment at 120°C for 1 minute with dry heat or at 110°C for 30 seconds with wet heat, it is necessary to use a large-scale heat treatment device such as a pin-plate tenter dry heat setting machine or an autoclave wet heat setting machine after knitting the knitted fabric containing the heat-welding yarn. Therefore, the required equipment investment is required, and small-batch production becomes difficult. In the case of entrusting the heat treatment of the knitted fabric containing the heat-welding yarn to a factory having the large-scale heat treatment device, the production period becomes longer.

[0011] An object of the present invention is to effectively suppress the stretching of a ground yarn of a knitted product using a natural fiber yarn and / or a synthetic fiber yarn without impairing the texture and without using a large-scale heat treatment device.

[0012] Technical solutions to solve problems A first aspect of the present invention provides a knitted product using natural fiber yarn and / or synthetic fiber yarn, wherein a heat-fused yarn that melts at 105° C. or less is fused to all or part of the ground yarn.

[0013] A knitted product according to a second aspect of the present invention is the knitted product according to the first aspect, wherein the knitted product is produced by a flat knitting machine.

[0014] A knitted product according to a third aspect of the present invention is the knitted product according to the first aspect or the knitted product according to the second aspect, wherein the heat-fusible yarn is a nylon heat-fusible yarn having a melting point of 75° C. to 90° C.

[0015] A knitted product according to a fourth aspect of the present invention is the knitted product according to the first aspect, wherein the fineness of the thermal fusion yarn is 30 denier or more and 150 denier or less.

[0016] The fifth aspect of the present invention provides a method for manufacturing a knitted product, comprising: a first step of weaving a hot-melt yarn that melts below 105°C into all or part of a ground yarn, and using a flat knitting machine to manufacture a knitted product in which the hot-melt yarn is in an unmelted state, wherein the ground yarn is a natural fiber yarn and / or a synthetic fiber yarn; and a second step of melting the hot-melt yarn using a steam iron to fuse the hot-melt yarn to the ground yarn for the knitted product that has undergone the first step.

[0017] A method for producing a knitted product according to a sixth aspect of the present invention is the method for producing a knitted product according to the fifth aspect, wherein the heat-fusible yarn is a nylon heat-fusible yarn having a melting point of 75° C. to 90° C.

[0018] Effects of the Invention The knitted product of the present invention and the knitted product manufactured by the manufacturing method of the knitted product of the present invention use natural fiber yarn and / or synthetic fiber yarn. Since the heat-fused yarn is fused to all or part of the ground yarn, the expansion and contraction of the ground yarn made of natural fiber yarn and / or synthetic fiber yarn can be suppressed.

[0019] The above-mentioned heat-melting yarn is woven into all or part of the ground yarn which is natural fiber yarn and / or synthetic fiber yarn, and knitted products in which the above-mentioned heat-melting yarn is in an unmelted state are manufactured by, for example, forming weaving using a flat knitting machine. As a result, knitted products in which the above-mentioned heat-melting yarn is in an unmelted state can be efficiently manufactured while reducing the amount of yarn used and cutting loss.

[0020] Since the heat-fusion yarn melts at 105°C or less, a large-scale heat treatment device is not used, and the heat-fusion yarn can be melted and fused to the ground yarn by moving the steam iron so as to spray steam to the desired portion of the knitted product where the heat-fusion yarn exists, thereby effectively operating the steam iron. Therefore, it is possible to carry out personalized and diversified small-batch short-cycle production that meets the needs of consumers without impairing the hand feel of the knitted product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of the weaving of Milano rib.

[0022] Figure 2 It is a weaving diagram of half-bed weaving. DETAILED DESCRIPTION

[0023] <Knitted products> The knitted product of the present invention uses natural fiber yarn and / or synthetic fiber yarn. That is, the knitted product is any one of a product using only natural fiber yarn, a product using only synthetic fiber yarn, and a product using spun yarn obtained by mixing natural fiber and synthetic fiber at a predetermined mixing ratio. The fineness of the yarn is 1 to 100. As the natural fiber yarn, for example, cotton yarn, wool yarn, animal hair yarn, etc. are used. As the synthetic fiber yarn, acrylic, polyester, etc. are used.

[0024] The knitted products of the present invention are all knitted products made by flat knitting machines, such as clothes such as pullovers, cardigans, dresses and skirts, bags such as large handbags, handbags and backpacks, and post-installation pads for clothing such as shoulder pads and knee pads.

[0025] The knitting method of the knitted product of the present invention is not limited. That is, the knitting method of the knitted product of the present invention can be any method as long as it can be horizontally knitted, such as plain knitting, rib knitting, Milano rib knitting, fur knitting, concave and convex knitting, double reverse knitting (double reverse knitting), hollow knitting, etc.

[0026] The knitted product of the present invention has a heat-fused yarn that melts at 105° C. or less fused to all or part of the ground yarn made of natural fiber yarn and / or synthetic fiber yarn. The heat-fused yarn melts at 105° C. or less, for example, a nylon heat-fused yarn having a melting point of 75° C. or more and 90° C. or less.

[0027] The fineness of the heat-fusion yarn is 30 denier or more and 150 denier or less, and is selected and used so as to obtain a desired texture according to the thickness and hardness of the knitted fabric.

[0028] The knitted product of the present invention can suppress the expansion and contraction of the ground yarn, which is a natural fiber yarn and / or a synthetic fiber yarn, because the heat-fused yarn is fused to all or part of the ground yarn. The shrinkage of the natural fiber can be controlled by knitting the natural fiber and the heat-fused yarn of the ground yarn in a desired distribution.

[0029] <Manufacturing method of knitted products> The knitted product of the present invention is manufactured by a flat knitting machine that produces a shape according to a pattern. That is, a heat-fusion yarn that melts at 105°C or less is woven into all or part of a ground yarn that is a natural fiber yarn and / or a synthetic fiber yarn, and a knitted product in a state where the heat-fusion yarn is not melted is manufactured by a flat knitting machine (first step). For example, by manufacturing a knitted product by forming knitting using a flat knitting machine, a knitted product in a state where the heat-fusion yarn is not melted can be efficiently manufactured while reducing the amount of yarn used and cutting loss.

[0030] Next, for the knitted product in a state where the heat-melting yarn is not melted, a steam iron that sprays high-temperature steam from a hole on the bottom is used to melt the heat-melting yarn and fuse the heat-melting yarn to the ground yarn (second step). Since the heat-melting yarn melts at 105° C. or less, a large-scale heat treatment device is not used, and the heat-melting yarn can be melted and fused to the ground yarn by moving an electric steam iron of, for example, 1000W to 1500W in order to spray steam to a desired portion of the knitted product where the heat-melting yarn exists, and by using an efficient operation of a steam iron, the heat-melting yarn can be melted and fused to the ground yarn.

[0031] <Example of thermally bonded yarn that melts at 105°C or less> It is a preferred embodiment to use a nylon heat-fusible yarn having a melting point of 75°C to 90°C as the heat-fusible yarn that melts at 105°C or lower.

[0032] As the nylon thermal fusion yarn having a melting point of 75° C. to 90° C., for example, “Nylon Thermal Fusible Yarn” (melting point 80° C.) manufactured by Changzhou City Lingxian Textile Equipment Co., Ltd. or “Nippon Thermal Fusible Yarn 78T” (melting point 85° C.) manufactured by Mitsubishi Chemical Corporation can be used.

[0033] <Example of the method of introducing the thermal fusion yarn> (1) Suppressing longitudinal and lateral elongation In plain weave, rib weave, furrow weave, etc., ground yarn and heat-fusion yarn are introduced into the whole. It is desirable to introduce two different yarns at the same time while knitting. The ground yarn and heat-fusion yarn are introduced from separate yarn insertion ports toward the head of the flat knitting machine and merged at the head.

[0034] (2) Stopping lateral expansion while maintaining longitudinal expansion For example, Figure 1 In the knitting diagram of Milano rib knitting shown, in the ground yarn (1) wound by the hook needle of the front needle bed and the hook needle of the rear needle bed (ground yarn of rib structure knitting (rib knitting)), the ground yarn (2) wound only by the hook needle of the rear needle bed, and the ground yarn (3) wound only by the hook needle of the front needle bed, the heat-melting yarn is aligned with the ground yarns of (2) and (3) (the heat-melting yarn is woven in).

[0035] In addition, for example, Figure 2 In the knitting diagram of the half-rib knitting shown, in the ground yarn of the tuck knitting (1) and the ground yarn of the rib knitting (2), the heat-fusion yarn is aligned with the ground yarn of (1) (the heat-fusion yarn is woven into it).

[0036] (3) Maintaining the shape of the knitted fabric while maintaining its stretchability For example, Figure 1 In the knitting diagram of the Milano rib knitting shown, the heat-fusion yarn is aligned with the ground yarn of the rib knitting (1) (the heat-fusion yarn is woven in).

[0037] In addition, for example, Figure 2 In the knitting diagram of the half-rib knitting shown, the heat-fusion yarn is aligned with the ground yarn of the rib knitting (2) (the heat-fusion yarn is woven in).

[0038] <Specific method for adjusting the tension of knitted products> The tension (stretching width) of the knitted product is adjusted, for example, as follows, by the way in which the heat-fusion yarn is introduced into the ground yarn of the course, which is a row of stitches arranged in the transverse direction of the knitted fabric.

[0039] (1) When the tension is very low The ground yarn of the full course is knitted together with the heat-fused yarn.

[0040] (2) When tension is reduced The ground yarn of 3 courses is knitted together with the heat-fusion yarn, and 2 courses are knitted only with the ground yarn, and these are repeated.

[0041] (3) Conditions for normalizing tension One course of ground yarn is knitted together with the heat-fusion yarn, and one course of ground yarn alone is knitted, and these are repeated.

[0042] (4) When the tension is increased The ground yarn of 2 courses is knitted together with the heat-fusion yarn, and 3 courses are knitted only with the ground yarn, and these are repeated.

[0043] (5) When the tension is extremely high The ground yarn of 1 course is knitted together with the heat-melting yarn, and 9 courses are knitted only with the ground yarn, and these steps are repeated.

[0044] <Evaluation of washing resistance> (Evaluation method) Based on the C4M method of JIS L 1930:2014 "Test methods for home washing of textile products" (washing at 40°C for 6 minutes, rinsing for 2 minutes and rinsing twice, dehydration for 3 minutes each, and hanging drying), the dimensional change rate after washing and drying was calculated by [(length after treatment) - (length before treatment)] / (length before treatment).

[0045] (Evaluation object) A Milano rib knitted pullover (ground yarn was 2 / 100 count cotton 100%) was used as an evaluation object.

[0046] (Examples and Comparative Examples) The 50-denier "Japan Thermal Fusion Yarn 78T" (melting point 85°C) produced by Mitsubishi Chemical Corporation was used to Figure 1 The pullover was manufactured by a flat knitting machine with the ground yarns of the rib knit (1×1 rib) of (1) in the knitting diagram of the Milano rib knitting aligned, and the pullover in which the heat-fusion yarn was melted and fused to the ground yarn by a steam iron was used as an example. The pullover in which the heat-fusion yarn was not added was used as a comparative example.

[0047] (Evaluation results) After washing and drying in the washing test method of the above evaluation method were performed once and after the above washing and drying were repeated five times, the above dimensional change rates were calculated for body length, body width, sleeve length, and hem width, and the results are shown in Table 1. A positive value indicates "extension" and a negative value indicates "contraction".

[0048] [Table 1] After washing and drying the pullover of the comparative example once, the length, width and sleeve length of the pullover shrank, and the hem width extended. After washing and drying the pullover of the comparative example five times, the length and width of the pullover shrank, and the sleeve length and hem width extended. After washing and drying the pullover of the comparative example five times, the shrinkage amount of the length of the pullover was as large as 6.3%.

[0049] In contrast, both after the pullover of the example was washed and dried once and after it was washed and dried five times, its body length, body width, sleeve length, and hem width were shrunk.

[0050] After washing and drying the sweater of the example once, the shrinkage of the body length, which was the largest, was 1.7%. This shrinkage of the body length (1.7%) was suppressed to about 57% compared to the shrinkage of the body length (3.0%) after washing and drying the sweater of the comparative example once. In addition, after washing and drying the sweater of the example five times, the shrinkage of the body length, which was the largest, was 3.7%. This shrinkage of the body length (3.7%) was suppressed to about 59% compared to the shrinkage of the body length (6.3%) after washing and drying the sweater of the comparative example five times.

[0051] As described above, it can be seen that the sweater of the example has a very high shape stability after repeated washing and drying, and the maximum shrinkage is much smaller than that of the sweater of the comparative example.

[0052] <Effects> The knitted product of the embodiment of the present invention as described above uses natural fiber yarn and / or synthetic fiber yarn. Since the heat-welding yarn is fused to all or part of the ground yarn made of natural fiber yarn and / or synthetic fiber yarn, the expansion and contraction of the ground yarn can be suppressed.

[0053] The above-mentioned heat-melting yarn is woven into all or part of the above-mentioned ground yarn, and knitted products in which the above-mentioned heat-melting yarn is in an unmelted state are manufactured by, for example, forming weaving using a flat knitting machine. As a result, knitted products in which the above-mentioned heat-melting yarn is in an unmelted state can be effectively manufactured while reducing the use of yarn and cutting loss.

[0054] Since the heat-fusion yarn melts at 105°C or less, a large-scale heat treatment device is not used, and the heat-fusion yarn can be melted and fused to the ground yarn by moving the steam iron so as to spray steam to the desired portion of the knitted product where the heat-fusion yarn exists, thereby effectively operating the steam iron. Therefore, it is possible to carry out personalized and diversified small-batch short-cycle production that meets the needs of consumers without impairing the hand feel of the knitted product.

[0055] The above embodiments are merely examples and are not intended to be limiting. Various improvements and changes may be made without departing from the scope of the present invention.

Claims

1. A knitted product using natural fiber yarn and / or synthetic fiber yarn, wherein the knitted product is characterized by: A heat-fusion yarn that melts at 105° C. or less is fused to all or part of the ground yarn.

2. The knitted product according to claim 1, characterized in that: The knitted product is made by a flat knitting machine.

3. The knitted product according to claim 1 or 2, characterized in that: The thermal fusion yarn is a nylon thermal fusion yarn having a melting point of 75° C. or more and 90° C. or less.

4. The knitted product according to claim 1, characterized in that: The fineness of the thermal fusion yarn is 30 denier or more and 150 denier or less.

5. A method for manufacturing a knitted product, characterized in that: include: A first step of weaving a heat-bonding yarn that melts at 105° C. or less into all or part of a ground yarn, and manufacturing a knitted product in which the heat-bonding yarn is not melted by using a flat knitting machine, wherein the ground yarn is a natural fiber yarn and / or a synthetic fiber yarn; and A second step is to perform a step of melting the heat-fusion yarn and fusing the heat-fusion yarn to the ground yarn with a steam iron on the knitted product after the first step.

6. The method for manufacturing a knitted product according to claim 5, characterized in that: The thermal fusion yarn is a nylon thermal fusion yarn having a melting point of 75° C. or more and 90° C. or less.

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