JP7320357B2 - Knitted fabric and clothing using said knitted fabric - Google Patents

Description

The present invention relates to a knitted fabric and clothing using the knitted fabric.

Conventionally, knitted fabrics with elastic threads inserted have been used for clothing that requires relatively high pressure when worn, such as girdles and supporters that prevent injury due to body compensation and exercise, and elastic stockings that promote venous circulation in the lower extremities. In addition, many sizes are developed so that the compression effect is exerted when wearing clothes and discomfort due to tightening is not felt. In particular, elastic stockings are available in five or more sizes, which complicates production management. Furthermore, multiple wearers with different body sizes may also wear the same size garment, in which case a wearer with a larger body size relative to the garment size and a wearer with a larger body size relative to the garment size may wear the same size garment. A wearer with a small body has a different pressure on the clothes, and depending on the wearer, the wearer may feel uncomfortable or the effect of wearing the clothes may not be exhibited.
In order to eliminate the complexity of these size developments, the discomfort between wearers when wearing clothes of the same size, and the difference in the effect of wearing clothes, it is necessary to use a knitted fabric that has a small increase in stress when the knitted fabric is stretched. However, there is no such knitted fabric up to now, and the current situation is that clothing manufacturers have no choice but to increase the size development.
A yarn obtained by pliing and twisting an elastic yarn and a non-elastic yarn is known. The effect of reducing the stress increase during elongation of the knitted fabric to be sewn by reducing the stress increase during elongation of the elastic yarn to be inserted cannot be expected. The technique used is not disclosed either.

Japanese Patent No. 3471143

In view of the above-described prior art, the problem to be solved by the present invention is to provide clothes that have the same wearing pressure even if the body size of the wearer is different, excellent size adaptability, and excellent quality. It is to provide a knitted fabric and clothes using the knitted fabric.

The inventors of the present invention conducted extensive studies and repeated experiments in order to solve the above-mentioned problems. It is possible to reduce the increase in stress during elongation of the yarn, and the inventors unexpectedly found that the inserted elastic yarn should be twisted at a predetermined number of twists, leading to the completion of the present invention. be.

That is, the present invention is as follows.
[1] A knitted fabric having an insert weave, characterized in that a yarn containing an elastic yarn twisted at a twist number of 200 to 1000 T/m is inserted into the insert weave.
[2] The knitted fabric according to [1] above, wherein the yarn containing the twisted elastic yarn is a plied yarn of an elastic yarn and a non-elastic yarn.
[3] The knitting according to [1] above, wherein the yarn containing the twisted elastic yarn is a covered elastic yarn in which the twisted elastic yarn is used as a core yarn and an inelastic yarn is wound around the core yarn. ground.
[4] The knitted fabric is a weft knitted fabric, and the yarn containing the twisted elastic yarn is inserted in all courses or every 1 to 4 courses, [1] to The knitted fabric according to any one of [3].
[5] The knitted fabric is a warp knitted fabric, and the yarn containing the twisted elastic yarn is inserted all-in or 1-in 1-4-out [1] to [ 3].
[6] A garment comprising the knitted fabric according to any one of [1] to [5].
[7] The garment according to [6], which is worn close to the body.

By using the knitted fabric of the present invention, it is possible to obtain the same wearing pressure even if the body size of the wearer is different.

Hereinafter, embodiments of the present invention will be described in detail.
The knitted fabric of the present embodiment is a knitted fabric having an insert structure, and is characterized in that a yarn containing elastic yarn twisted at a twist number of 200 to 1000 T/m is inserted into the insert structure.

The knitted fabric of this embodiment may be a weft knitted fabric or a warp knitted fabric. If it is a weft knitted fabric, it is a circular knitting machine including a small diameter single circular knitting machine (also called a pantyhose knitting machine) with a hook diameter of about 4 to 5 inches. It can be manufactured with a warp knitting machine. The gauge of the knitting machine is not particularly limited, and the optimum gauge and yarn usage can be selected according to items such as innerwear, stockings, and supporters.

The knitted fabric of the present embodiment is a knitted fabric having an insert structure, and a yarn including an elastic yarn twisted at a twist number of 200 to 1000 T/m is inserted into the insert structure. By inserting the yarn containing the elastic yarn twisted at a twist number of 200 to 1000 T/m, the increase in stress during stretching of the knitted fabric can be suppressed to a lower level than the elastic yarn before twisting. By using this characteristic, a product that has new effects not seen in conventional products, that is, the wearer has the same compression even if the body size of the wearer differs, excellent size adaptability, and It can be considered as clothes excellent in dignity.

The "yarn including twisted elastic yarn" in the knitted fabric of the present embodiment includes a yarn in which only elastic yarn is twisted, a yarn made of plied and twisted yarn of elastic yarn and inelastic yarn, and a twisted elastic yarn. Any yarn consisting of covered elastic yarn in which a yarn is used as a core yarn and an inelastic yarn is wound around the core yarn may be used, and the desired effects can be exhibited. An existing twisting machine can be used to twist the elastic yarn, but a twisting machine with a positive feed so that the elastic yarn is stretched uniformly during twisting is better than a case where the elastic yarn is twisted with a negative feed. , is preferable because uneven twisting is less likely to occur, and streaks are less likely to occur in the weft or warp of the knitted fabric.

The elastic yarn in the knitted fabric of this embodiment refers to fibers having a maximum elongation of 100% or more. The elastic yarn may be a polyurethane-based or polyetherester-based elastic yarn. For example, the polyurethane-based elastic yarn may be dry-spun or melt-spun, and the polymer and spinning method are not particularly limited. The breaking elongation of the elastic yarn is preferably about 400% to 1000%, and it is preferable that it has excellent stretchability and does not lose its stretchability at around 180°C, which is the normal processing temperature in the preset process during dyeing. As the elastic yarn, it is also possible to use an elastic yarn imparted with functionality such as high setting properties, antibacterial properties, moisture absorption, and water absorption by adding a special polymer or powder.

Regarding the number of twists of the elastic yarn of the “yarn containing twisted elastic yarn” inserted into the knitted fabric of this embodiment, if it is 200 to 1000 T / m, regardless of the fineness of the elastic yarn, it is higher than the untwisted yarn. Also, the stress during elongation is greatly reduced, and the garment can be made to have excellent size adaptability. If the twist number is less than 200 T/m, the stress increase during elongation is large and the desired effect cannot be exhibited. Moreover, it tends to be difficult to knit, and the cost is too high. The number of twists of the elastic yarn of the "yarn containing twisted elastic yarn" is preferably 300 to 800 T/m.

The fineness of the elastic yarn contained in the knitted fabric of this embodiment is preferably 30 to 500 dtex (decitex: the same symbols are used hereinafter). If it is 30 dtex or more, it can be used as a garment with high wearing pressure. The fineness of the elastic yarn is more preferably 40-400 dtex. In the measurement of the fineness of the elastic yarn, the yarn containing the twisted elastic yarn is extracted from the knitted fabric, and in the case of a plied yarn, the elastic yarn and the inelastic yarn are untwisted, and after untwisting, A load of 0.1 g is applied to the elastic yarn, and the fineness is obtained from the length and weight.

The yarn inserted into the knitted fabric of the present embodiment may be "a plied yarn of an elastic yarn and a non-elastic yarn." Specifically, the simplest method is to align and twist non-elastic yarns at the same time that the elastic yarns are twisted. Further, the yarn inserted into the knitted fabric of the present embodiment may be "a covered elastic yarn in which a twisted elastic yarn is used as a core yarn and an inelastic yarn is wound around the core yarn". In any case, the draft rate (yarn length ratio) of the elastic yarn and the inelastic yarn, that is, the ratio of the inelastic yarn length to the elastic yarn length during knitting is arbitrary, but 2.5 to 4.5 is preferable. It is preferably 2.8 to 4.0, more preferably 2.8 to 4.0. If the draft rate is 2.5 or more, a knitted fabric with sufficiently high elongation can be obtained, and if the draft rate is 4.5 or less, there is no problem in knitting. It is possible to obtain a garment having a suitable wearing pressure.

The non-elastic yarn in the knitted fabric of this embodiment refers to fibers having a maximum elongation of less than 100%. Both long and short fibers can be used as inelastic yarns, polyester fibers such as polyethylene terephthalate and polytrimethylene terephthalate, polyamide fibers, synthetic fibers such as polypropylene, semi-synthetic fibers such as acetate, cotton, and cupra. , cellulosic fibers such as rayon, and animal hair fibers such as wool. In addition, these bright yarns, semi-dull yarns, full-dull yarns, etc. can be used arbitrarily, and fibers with arbitrary cross-sectional shapes such as round, elliptical, W-shaped, cocoon-shaped, and hollow fibers can be used. The shape of the fiber is not particularly limited, and raw yarn, crimped yarn such as false twist can be used. It is possible to contain 0% by weight, and by containing these, a knitted fabric excellent in heat dissipation, moisture absorption, sweat absorption, etc. can be produced. Furthermore, it is suitable to use a non-elastic thread having a thickness of 10 to 170 dtex, preferably 15 to 120 dtex.

The knitted fabric of the present embodiment contains an insert structure in which "a yarn containing a twisted elastic yarn" is inserted. The method of inserting the yarn is not particularly limited, but in the case of a weft knitted fabric, one yarn is inserted in all courses or every 1 to 4 courses (1 to 4 courses are spaced apart). is preferred from the point of view of size adaptability. For example, "insertion of one yarn every three courses" means that after one course of twisted elastic yarn is inserted, the next three courses are not inserted. In the case of a warp knitted fabric, it is preferable from the viewpoint of size adaptability to insert all-in or 1-in 1-4-out.

In both the weft knitted fabric and the warp knitted fabric, the higher the insertion amount, the higher the power of the knitted fabric. Further, whether the fabric is a weft knitted fabric or a warp knitted fabric can be selected according to the purpose of the garment.
The ground structure of the knitted fabric into which the yarn containing the twisted elastic yarn is inserted is not particularly limited, but specific examples include single knitted jersey, pique, etc. for weft knitted fabrics, and smooth, punch loam, etc. for double knitted fabrics. Optional. In addition, in warp knitting, a method of incorporating an insertion structure into a Queens cord or a half structure, or in a Russell knitting machine, a structure that combines an existing looping structure and an insertion structure, such as 6-course satin, 6-course tulle, and twin power. Can be used. It is also possible to use elastic yarns other than yarns including twisted elastic yarns. For example, elastic yarns can be knitted by plating.

As for the insertion weave, in a weft knitted fabric, for example, a weft weft can be made into a weft-knitted fabric in which tucks and welts (also called misses) are alternately repeated in the weft direction. In addition, when the fineness of the elastic twisted yarn is 100 dtex or less, a combination structure of knit and tuck, such as repeating knit and tuck alternately in the weft direction, is also possible. can be used, but only the tuck and welt are preferable because the effects of the present invention are enhanced.

In addition, in a warp knitted fabric, for example, when a Russell knitting machine is used, an insertion structure such as 00/11/00/22/00/11// or 00/11// can be used. In addition, when the fineness of the elastic twisted yarn is 100 dtex or less, a combination of knit and insertion such as 10/11// is possible, but only the insertion structure is preferable because the desired effect is enhanced.

Furthermore, it is possible to contain an inorganic substance in the elastic yarn, and it is possible to make a knitted fabric that takes into account the performance of the contained inorganic substance. It can be a good knitted fabric. The simplest method for incorporating the inorganic substance is to add the inorganic substance to the spinning stock solution of the elastic yarn and then perform spinning. The inorganic substance refers to a ceramic inorganic substance such as titanium oxide and/or an inorganic compound. These inorganic substances are preferably contained in the elastic yarn in an amount of 1 to 10% by weight, more preferably 2 to 5% by weight. If the content of the inorganic substance is too low, the effect of the inorganic substance cannot be exhibited, and if the content is too high, yarn breakage may occur during spinning or stretching.

As a method for dyeing and finishing the knitted fabric of this embodiment, a normal dyeing and finishing process can be used, and the dyeing conditions are set according to the fiber material used, and the dyeing machine used is a jet dyeing machine, a wince dyeing machine, and a paddle dyeing machine. Optionally, a processing agent that improves water absorption and flexibility can be used.

When the knitted fabric of the present embodiment is used for clothes, both the weft knitted fabric and the warp knitted fabric are knitted so that the yarn containing the inserted twisted elastic yarn is oriented in the same direction as the direction in which the garment is easily stretched. is preferably included because the desired effect is higher.

Clothing using the knitted fabric of the present embodiment is preferably clothing that is worn in close contact with the body. Specifically, the following formula:
Spare rate % = {(Clothing size) - (Body size)} / (Body size) x 100
{In the formula, the clothing size is the circumference of the clothing at the same position on the body and the clothing, and the body size is the circumference of the body at the same position on the body and the clothing. }
The desired effect is most effectively achieved in the case of clothes having a looseness ratio of 0% or less.

In the clothes of this embodiment, not only clothes that are entirely in close contact with the body, but also clothes that are partially in close contact with the body exhibit excellent size adaptability.

EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples, but the present invention is not limited only to these Examples. Evaluations in Examples and Comparative Examples were carried out by the following methods.

[1] Twist number of elastic yarn The twist number of the elastic yarn is measured by applying a load of 0.1 g to the elastic yarn with a twist detector.
In the case of an elastic yarn and a non-elastic plied yarn, a load of 20 g is applied to the plied yarn, and the number of twists is measured while separating the elastic yarn and the inelastic yarn.
Except for applying the load as described above, the measurement is performed according to the method described in Appendix 2 of JIS L 1095.

[2] Size adaptability (compression, compression increase rate)
Elastic stockings or tights up to below the knee are used with Salzmann pressure measuring device MST MKIII, and the same elastic stockings or tights are worn on leg size 6 and 9, and the compression is measured at the calf. do.
Also, the compression increase rate due to the increase in leg shape is expressed by the following formula:
Compression increase rate (%) = {(compression of No. 9 leg type) - (compression of No. 6 leg type)} / (compression of No. 6 leg type) x 100
Calculated by
The lower the compression increase rate, the better the size adaptability. In the present example, a compression increase rate of 20% or less was considered acceptable, and a compression increase rate of 10% or less was considered particularly excellent in size adaptability.

[3] Fineness of elastic yarn constituting yarn A yarn containing a twisted elastic yarn is extracted from the knitted fabric, and after untwisting the elastic yarn, a load of 0.1 g is applied to the elastic yarn to increase the length. Obtain the weight and calculate the fineness. When the yarn containing the twisted elastic yarn is a plied yarn or a covered elastic yarn, the elastic yarn and the inelastic yarn are separated, the elastic yarn is untwisted, and a load of 0.1 g is applied to the elastic yarn. Measure the length and weight and calculate the fineness.

[4] Quality The quality of the manufactured product is judged by the following evaluation criteria, and △ or more is accepted:
◯: The quality of the product is extremely good. △: Pilling-like piles of yarn are observed in some places on the appearance of the product. ×: Pilling-like piles of yarn are observed on almost the entire appearance of the product, and the appearance is poor.

[Example 1]
As a yarn containing twisted elastic yarn, elastic yarn 235 dtex (trade name: Roica HS (registered trademark): manufactured by Asahi Kasei Corporation) was twisted with a twisting machine, and the twist number of the twisting machine was set to 800 T / m with a Z twist. Manufactured at a yarn draft ratio of 3.0.
The obtained thread is inserted into a twin jersey weave with a nylon 56dtexex/36 filament base structure using a stocking knitting machine with a hook diameter of 4.5 inches. It is designed so that it can be inserted into the main body, and the calf is about 20 hectopascals (hPa: the same symbol will be used hereinafter) with the Salzmann leg type pressure measuring device No. 6 leg type, and the pressure from the toes to the knees Knitted stockings.
The knitted fabric thus obtained was dyed, immersed in a softener and dried. After drying, the stocking was put on a leg-shaped form and steam-set at 110°C for 30 seconds to obtain an elastic stocking.
Table 1 below shows the results of measuring the wearing pressure of this elastic stocking with a Salzmann pressure measuring instrument, the number of twisted yarns, and the like.
A stocking with a small change in wearing pressure was obtained even when the size of the leg type changed.

[Examples 2 to 6, Comparative Examples 1 to 3]
In Example 1, all courses of the elastic yarn are inserted (Example 2), and the elastic yarn is inserted every 4 courses (Example 3) and every 5 courses (Example 4). Elastic stockings were manufactured under the same conditions. Furthermore, in Example 1, the twist number of the elastic yarn was changed to 300 T/m (Example 5), 900 T/m (Example 6), 100 T/m (Comparative Example 2), 1200 T/m (Comparative Example 3). ), an elastic stocking was manufactured by inserting the elastic yarn as it is (Comparative Example 1) into the knitted fabric.
The results are shown in Table 1 below.
In Comparative Example 1, in which the elastic yarn was not twisted, and in Comparative Example 2, in which the number of twisted elastic yarns was small, elastic stockings with a large change in wearing pressure were obtained. In Comparative Example 3, in which the number of twisted yarns was too large, the change in pressure was small, but the quality was poor.

[Example 7]
As a yarn containing twisted elastic yarn, elastic yarn 155 dtex (trade name: Roica HS (registered trademark): manufactured by Asahi Kasei Corporation) and nylon 33 dtex / 24 filament are used in a twisting machine. was produced with a Z twist of 600 T/m and a draft ratio of the elastic yarn of 3.3.
The yarn thus obtained is inserted into a twin jersey weave with a nylon 56dtex/36 filament base structure using a stocking knitting machine with a hook diameter of 4.5 inches. Stockings are knitted from the tip of the toe to below the knee, designed to be inserted into the body.
The knitted fabric thus obtained was dyed, immersed in a softener and dried. After drying, the stocking was put on a leg-shaped form and steam-set at 110°C for 30 seconds to obtain an elastic stocking.
Table 1 below shows the results of measuring the wearing pressure of this elastic stocking with a Salzmann wearing pressure measuring device.
Even if the yarn to be inserted was a plied yarn, a stocking with a small pressure change was obtained.

[Example 8]
In manufacturing a girdle by a Raschel knitting machine, as a yarn containing twisted elastic yarn, elastic yarn 310 dtex (trade name: Roica CR (registered trademark): manufactured by Asahi Kasei Corporation) and nylon 33 dtex / 24 filament are combined and twisted. , the twist number of the twisting machine was set to 500 T/m in Z twist, and the draft rate of the elastic yarn was 3.3.
The resulting yarn was threaded all-in through the bank reed of the insertion thread, and the nylon 56dtex/24 filament was threaded through the front reed to knit a 28-gauge 6-course satin structure.
The produced knitted fabric was scouring, dyed after presetting, and finished by heat-setting at 185° C. for 60 seconds after imparting a water-absorbent softener.
We are planning to manufacture a girdle from the obtained knitted fabric, but in order to make it easier to measure the change in pressure, we decided to sew elastic stockings so that they can be measured with a Salzman pressure tester, and the pressure on the calves is measured by Salzman wear. A No. 6 leg-type pressure measuring instrument was used to measure the wearing pressure after cutting and sewing to a size of approximately 20 hPa.
Table 1 shows the results.
Although it was measured with stockings, there was a slight increase in wearing pressure even when the size of the leg type changed. In addition, when M size and S size girdles were actually sewn using the knitted fabric of this example and worn on a monitor that usually wears an M size girdle, there was no difference in the tightness of either girdle. was a girdle.

[Examples 9 and 10]
In Example 8, the knitted fabric was knitted by threading the twisted elastic yarn in 1-in 4-out (Example 9), and knitting by threading the twisted elastic yarn in 1-in 5-out. Each knitted fabric (Example 10) was produced under the same other conditions as in Example 8 and evaluated in the same manner as in Example 8.
The results are shown in Table 1 below.
Although it was measured with stockings, there was a slight increase in wearing pressure even when the size of the leg type changed. In addition, when M size and S size girdles were actually sewn using the knitted fabric of this example and worn on a monitor that usually wears an M size girdle, there was no difference in the tightness of either girdle. was a girdle.

[Example 11]
As a yarn containing twisted elastic yarn, elastic yarn 78 dtex (trade name: Roica CR (registered trademark): manufactured by Asahi Kasei Corporation) and nylon 13 dtex are twisted with a twisting machine, and the number of twists is set to 700 T / with Z twist. m, and the draft rate of the elastic yarn was 3.2.
The yarn thus obtained is inserted into a twin jersey weave with a nylon 56dtexex/36 filament base structure using a stocking knitting machine with a hook diameter of 4.5 inches, in which knitting and tucking are alternately repeated every three courses. It is designed so that one can be inserted, and the calf is about 20 hectopascals (hPa: hereinafter the same symbol is used) with the Salzmann leg type pressure measuring device No. 6 leg type, from the toe to the knee knitted stockings.
The knitted fabric thus obtained was dyed, immersed in a softener and dried. After drying, the stocking was put on a leg-shaped form and steam-set at 110°C for 30 seconds to obtain an elastic stocking.
Table 1 below shows the results of measurement of the wearing pressure of this elastic stocking with a Salzmann pressure measuring instrument, the number of twisted yarns, and the like.
A stocking with a small change in wearing pressure was obtained even when the size of the leg type changed.

[Example 12]
In manufacturing compression tights, elastic yarn 44 dtex (trade name: Roica CR (registered trademark): manufactured by Asahi Kasei Corporation) is used as a yarn containing twisted elastic yarn. It was manufactured at 500 T/m and the draft rate of the elastic yarn was 3.0. In order to manufacture a covered elastic yarn using the manufactured twisted elastic yarn as a core yarn, a covering machine is used to wind nylon 33dt/23 filament, the number of twists is 1200 T / m, and the draft rate of the elastic yarn is S-twisted. A covered elastic yarn was produced as 3.2.
Using the obtained thread, a cotton sheeting structure is knitted with a pantyhose knitting machine with a hook diameter of 4 inches and a number of needles of 380, immersed in a softener, dried, and then tights are attached to a leg-shaped frame. The garment was put on and steam-set at a wet heat of 110° C. for 30 seconds to obtain compression tights.
Table 1 below shows the results of measurement of the pressure of the produced compression tights with a Salzman pressure measuring device, the number of twisted yarns, and the like.
Compression-type tights with small change in pressure even when the size of the leg type is changed are obtained.

Clothes using the knitted fabric of the present invention are clothes that can be expected to have the same tightening feeling and functional effects such as swelling prevention even if the wearer's size changes. It is suitable for sports bras, supporters, and the like, and can also be used for compression sportswear, gaiters, and the like.

Claims (5)

A knitted fabric having an inserted structure in which a yarn containing an elastic yarn twisted at a twist number of 200 to 1000 T/m is inserted , the yarn containing the elastic yarn twisted at a twist number of 200 to 1000 T/m A knitted fabric characterized by comprising a covered elastic yarn in which a twisted elastic yarn is used as a core yarn and an inelastic yarn is wound around the core yarn. The knitted fabric according to claim 1 , wherein the knitted fabric is a weft knitted fabric, and one yarn containing the twisted elastic yarn is inserted in all courses or every 1 to 4 courses. . The knitted fabric according to claim 1 , wherein the knitted fabric is a warp knitted fabric, and the yarn containing the twisted elastic yarn is inserted all-in or 1-in 1-4-out. A garment comprising the knitted fabric according to any one of claims 1-3 . 5. The garment of claim 4 , worn close to the body.