JP2020029637A - Leg wear and manufacturing method thereof - Google Patents

Abstract

To provide a leg wear in which a dyed yarn can be used and a desired shape stability can be retained.SOLUTION: A leg wear 1 has a shape stabilizing part having a plating structure formed by knitting a face yarn 3 and a back side yarn 2. The shape stabilizing part is composed of a cylindrical knitted fabric formed with the face yarn 3 containing a natural fiber and the back side yarn 2 made only of a polytrimethylene terephthalate.SELECTED DRAWING: Figure 1

Description

  The present invention relates to legwear using natural fibers and a method for producing the same.

  It is known that legwear using natural fibers such as socks is easily shrunk by washing, and there is a demand for form stability that retains the form at the time of purchase even after repeated washing.

  For the back yarn of the knitted fabric of the legwear, for example, an elastic yarn having elasticity is used. Conventionally, as the elastic yarn, for example, a processed yarn called FTY (Filament Twisted Yarn) has been used.

  Patent Document 1 discloses PTT (polytrimethylene terephthalate) as a high shrinkage component in order to provide a sock that has excellent stretchability and recovery properties while maintaining heat shrinkage resistance, and that can further suppress shrinkage during drying. It is disclosed that a fiber-based polyester is used. The sock described in Patent Document 1 includes a composite fiber filament in which a plurality of polyester polymers are bonded in a side-by-side type along a fiber length direction, and at least one of the polyester polymers constituting the composite fiber filament has PTT. You are using

JP 2004-244736 A

  However, conjugate yarns such as side-by-side yarns are wound around a dyeing bobbin and dyed under tension in a general dyeing method (particularly cheese dyeing), and thus do not shrink sufficiently by overheating during dyeing. Therefore, it is generally not used for yarn dyeing. For this reason, it is difficult to apply conjugate yarn to legwear, which generally uses dyed yarn for quality stability, and even if it is applied, problems such as discoloration occur and a deep color is obtained. There is a problem that you can not do. Furthermore, even if a side-by-side type composite fiber is used, the maximum elongation is limited due to the influence of the conjugated polyester, causing a deterioration in the feeling of wearing, and by repeating wearing and washing, crimping occurs, Since the product shrinks, sufficient form stability cannot be obtained.

  Patent Document 1 discloses that by setting conditions such that the composite fiber bonded in a side-by-side type can sufficiently exhibit its crimping property in the dyeing step, the crimping property can be sufficiently exhibited and the excellent stretchability can be obtained. It is described that a dyed yarn having an elongation recovery rate can be obtained.

  However, the method described in Patent Document 1, when performing yarn dyeing, when winding the conjugate fiber bonded in a side-by-side type on a dyeing bobbin, weakens the tension as compared to the winding conditions of a normal thread. Conditions are limited, such as increasing the density of the wound yarn. Further, in the method described in Patent Document 1, even if stretchability due to crimping occurs, the maximum elongation is limited due to the influence of the conjugated polyester, and the wearing feeling is deteriorated.

  Further, generally, legwear (especially socks) is fitted to a metal plate after knitting and heat set to form a product. However, when a conjugate yarn is used, the shape retention by heat setting is released by repeating wearing and washing, and the conjugate yarn returns to a crimped state, and the product shrinks. You can't get the legwear you have.

  Therefore, an object of one embodiment of the present invention is to provide legwear in which dyed yarn can be used and which can maintain desired form stability, and a method for manufacturing the same.

  In order to solve the above problem, a legwear according to one embodiment of the present invention has a form stabilizer having a plating structure knitted with a front yarn and a back yarn, and the form stabilizer has a surface stability. The yarn contains a natural fiber, and the back yarn is a tubular knitted fabric formed only of polytrimethylene terephthalate fiber.

  In order to solve the above-mentioned problem, a method for manufacturing legwear according to one embodiment of the present invention is directed to a tubular method in which a knitting is performed by plating and knitting a front yarn including natural fibers and a back yarn including only polytrimethylene terephthalate fibers. The method includes a step of forming a form stable portion made of a knitted fabric.

  According to one aspect of the present invention, it is possible to provide legwear in which dyed yarn can be used and which can maintain desired form stability, and a method for producing the same.

It is a top view showing the knitting organization of the form stable part of legwear concerning the embodiment of the present invention. (A) is a cross-sectional view of a PTT fiber, (b) is spinning, dyeing, heat setting after knitting of legwear using PTT fiber as a backing yarn, when wearing the legwear, It is explanatory drawing which shows the state of the PTT fiber in FIG. (A) is a cross-sectional view of a conjugate fiber of a side-by-side type, and (b) shows a state at the time of spinning, at the time of dyeing, and at the time of heat setting after knitting of legwear using the above conjugate fiber as a backing yarn. It is explanatory drawing which shows the state of the said conjugate fiber at the time of wearing leg wear. It is a left view which shows the dimension change before and after the washing | wearing wear test of the sock which concerns on Example 1 of this invention. It is a left view which shows the dimension change before and after the washing | wearing wear test of the sock which concerns on Comparative Example 1. It is a left view which shows the photograph of the external appearance of the sock which concerns on Example 1 of this invention after a washing wear test, and Comparative Example 1. It is a left view which shows the photograph of the external appearance of the sock which concerns on Example 4 of this invention before and behind a washing | wearing wear test. It is a left view which shows the photograph of the external appearance of the sock concerning the comparative example 3 before and after a washing | wearing test.

  FIG. 1 is a plan view showing a knitting structure of a shape stabilizing portion of the legwear 1 according to the present embodiment.

  The legwear 1 according to the present embodiment is formed by knitting at least a part of a knitting yarn composed of a back yarn 2 exposed on the skin side (inside) and a front yarn 3 exposed on the outside by plating knitting. And a shape stabilizing portion made of a circular knitted tubular knitted fabric having a plated structure.

  Hereinafter, a case where the leg wear 1 is, for example, a sock (leg wear) will be described as an example. When the legwear 1 is, for example, a sock, it is desirable that at least the leg portion is provided with a form stabilizer, and it is more desirable that the entire sock (that is, the entire legwear 1) is a form stabilizer.

  As the face yarn 3, a spun yarn containing natural fibers at a high mixing ratio, which has been subjected to yarn dyeing before knitting, is used. The ratio of the natural fiber in the face yarn 3 is preferably 50% by weight to 100% by weight, and more preferably 75% by weight to 100% by weight. Originally, natural fibers (natural fiber yarns) have a property of easily shrinking. For this reason, the higher the mixing ratio of the natural fibers, the greater the shape stabilizing effect by using PTT fibers for the back yarn 2.

  The natural fiber may be, for example, a plant-based natural fiber such as cotton, hemp, or silk, or may be an animal hair-based natural fiber such as wool, angora, cashmere, or the like. That is, the natural fiber may be, for example, a material selected from cotton, wool, and silk. Although silk is not a plant, silk is conveniently regarded as a plant-based natural fiber to distinguish it from animal hair.

  As the back yarn 2, a yarn that has been subjected to yarn dyeing before knitting and has not been subjected to artificial crimping is used. The backing yarn 2 is a PTT (polytrimethylene terephthalate) fiber, and specifically, a single-component multifilament long fiber made of PTT is used. That is, as the back yarn 2, for example, a conjugate yarn (composite fiber) such as a side-by-side type or a covering yarn as in Patent Document 1, and a filament (PTT fiber) composed of only PTT is used.

  The PTT fiber is an elastic yarn having elasticity, has a low elastic modulus and crystal elasticity, and gives the legwear 1 a soft feel, a comfortable stretchability that is not tightened, and a form stability. Further, in the present embodiment, the dyed yarn can be used similarly to the front yarn 3 because the back yarn 2 is made only of the PTT fiber. By using the dyed yarn, discoloration can be suppressed and a deeper color can be obtained as compared with the case where the knitted fabric is dyed.

  The knitting structure may be flat knitting, rib knitting, rubber knitting, single-row knitting, or the like, but rib knitting tends to lose its shape more than flat knitting, for example. For this reason, when the legwear 1 is knitted by rib knitting, the shape stabilizing effect is more easily exhibited than when knitted by flat knitting.

  FIG. 2A is a cross-sectional view of the PTT fiber, and FIG. 2B is a heat set after knitting the legwear 1 using the PTT fiber as the backing yarn 2 during spinning, dyeing, and the like. FIG. 4 is an explanatory diagram showing a state of PTT fibers when the legwear 1 is worn. FIG. 3A is a cross-sectional view of a side-by-side type conjugate fiber, and FIG. 3B is a view showing the conjugate fiber (namely, FIG. FIG. 3 is an explanatory diagram showing the state of the conjugate fiber when the legwear 1 is worn after the knitting of the legwear 1 and the legwear 1 is worn, using the conjugate fiber shown in FIG. .

  As shown in FIG. 3A, a side-by-side conjugate fiber in which a synthetic fiber such as polyester or acrylic fiber and a PTT fiber are bonded along the fiber length direction is applied to the back of legwear 1 such as a sock. When used for the yarn 2, as shown in FIG. 3 (b), the shape of the legwear 1 during heat setting after knitting cannot be maintained due to the influence of the synthetic fiber, and the conjugate is not used. The fibers may return to the crimped state at the time of dyeing, and the legwear 1 may shrink. When such a conjugate fiber is used as the backing yarn 2 of legwear 1 such as a sock, when the legwear 1 is worn, the wearing and washing are repeated, so that the heat is affected by the synthetic fiber. The shape retention by the setting is released, the conjugate yarn returns to the crimped state at the time of dyeing, and the legwear 1 shrinks. For this reason, the legwear 1 using the conjugate fiber for the backing yarn 2 cannot maintain desired form stability. Further, the legwear 1 using the conjugate fiber as the backing yarn 2 is restricted in elongation by the influence of the synthetic fiber, and unnecessary tightening occurs. For this reason, the wearing feeling is deteriorated.

  On the other hand, as shown in FIG. 2 (b), a PTT fiber consisting of only PTT as shown in FIG. 2 (a) does not shrink by dyeing, and When used for the back yarn 2 of the wear 1, the form (shape) of the leg wear 1 during heat setting after knitting can be maintained. Further, when only the PTT fiber is used for the backing yarn 2 of the legwear 1 such as a sock, the legwear 1 is stretched gracefully due to the characteristics of the PTT fiber itself when the legwear 1 is worn, Return to the state at the time of heat setting. Therefore, unnecessary tightening due to limited elongation does not occur.

  As described above, the present inventors use the PTT fiber as the back yarn 2 of the knitted fabric of the legwear 1, and use the side-by-side type conjugate fiber as the back yarn 2 of the knitted fabric of the legwear 1. It has been found that the form stability and wearing feeling of the legwear 1 can be significantly improved as compared with the case of FIG. In addition, the present inventors use PTT fiber for the back yarn 2 of the knitted fabric of the legwear 1 as described above, thereby using FTY for the back yarn 2 as shown in Examples and Comparative Examples described later. It has been found that the morphological stability can be greatly improved as compared with the case where the above method is used. According to the present embodiment, as described above, by using the PTT fiber as the back yarn 2 of the knitted fabric of the legwear 1, the dyed yarn can be used and the desired form stability can be maintained. Can be provided.

  Further, as a result of further studies, the inventors of the present invention have found that using (selecting) a PTT fiber having a thickness corresponding to the thickness of the natural fiber used for the front yarn 3 as the backing yarn 2 allows the leg to be selected. The present inventors have found that it is possible to further improve the form stability of the wear 1 and to provide the leg wear 1 capable of obtaining a more comfortable fit.

  Specifically, when the ratio of the thickness of the back yarn 2 to the thickness of the front yarn 3 (thickness of the back yarn 2 / thickness of the front yarn 3) is defined as the ratio R, the ratio R is By selecting the back yarn 2 and the front yarn 3 so as to be in the range of 0.6 to 8.9, the form stability of the legwear 1 can be further improved, and a more comfortable fit can be achieved. It has been found that the legwear 1 that can be obtained can be provided. In calculating the ratio R, the numbers of the back yarn 2 and the front yarn 3 need to be aligned. In the present embodiment, for example, the thickness R of the back yarn 2 / the thickness of the front yarn 3 when converted to cotton count is calculated as the ratio R.

  Tables 1 and 2 show examples of suitable combinations of the back yarn 2 and the front yarn 3 according to the present embodiment. Table 1 shows a case where the face yarn 3 is a plant-based natural fiber. Table 2 shows the case where the back yarn 2 is animal hair natural fiber.

  The thickness of the back yarn 2 and the thickness of the front yarn 3 are not particularly limited, but when the thickness of the back yarn 2 is in the range of, for example, 125 to 175 D (D: denier, the same applies hereinafter) (for example, 150 D), When R is in the range of, for example, 0.6 to 8.9, a comfortable fit can be obtained while maintaining the desired form stability. When the thickness of the backing yarn 2 is, for example, in the range of 50 to 100 D (for example, 75 D), when the ratio R is in the range of, for example, 1.2 to 7.1, the desired form stability is maintained. In addition, a comfortable fit can be obtained.

  In particular, when the natural fiber is a vegetable fiber, when the ratio R is in the range of, for example, 2.7 to 8.9, high morphological stability can be obtained, and there is no feeling of tightening, and more comfortable. Fit feeling can be obtained. At this time, when the thickness of the backing yarn 2 is in the range of, for example, 125 to 175D (for example, 150D), a higher effect can be obtained by setting the ratio R to be in the range of 3.3 to 8.9. Can be. Further, at this time, when the thickness of the back yarn 2 is, for example, 75D, a higher effect can be obtained by setting the ratio R within the range of 2.7 to 7.1. When the thickness of the face yarn 3 is less than 12th (preferably 11.5th or less, more preferably 11th or less), the ratio R is set in a range of 3.3 to 8.9. Thereby, a higher effect can be obtained.

  On the other hand, when the natural fiber is an animal hair fiber, when the ratio R is in the range of 0.6 to 1.8, high morphological stability can be obtained, and there is no feeling of tightening, and more comfortable. Fit can be obtained. At this time, when the thickness of the backing yarn 2 is in the range of, for example, 125 to 175D (for example, 150D), a higher effect can be obtained by setting the ratio R to be in the range of 0.6 to 0.9. Can be. Further, at this time, when the thickness of the backing yarn 2 is, for example, 75D, a higher effect can be obtained by setting the ratio R within the range of 1.2 to 1.8.

  Table 3 shows the relationship between the gauge of the sock knitting machine and the compatible count. Table 4 shows the relationship between the gauge of the circular knitting machine and the compatible number. Table 5 shows the relationship between the gauge of the flat knitting machine and the compatible number. In Tables 3 to 5, the gauges indicate the number of stitches per inch, the bristle count indicates the metric count, the cotton count indicates the English count, and the numbers in parentheses indicate the number of lines aligned.

  Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to only the following Examples. In addition, the elongation recovery rate, the load at the maximum point, and the dimensional change rate in the following Examples and Comparative Examples were measured by the following methods. Washing in the following Examples and Comparative Examples was performed as follows.

(Measurement of load at maximum point)
The load at the maximum point was measured as follows using the method D of JIS L 1096. First, the entire sock 11 obtained in each Example and Comparative Example was set on a tensile tester so as to be gripped at 5 cm intervals, marked at 200 mm intervals (L0), and gripped at a pulling speed of 200 mm / min. Was applied until each of them extended 30%. Next, after holding the gripped portions for 30 minutes at each stretch of 30%, the load was removed, and after 3 minutes, a load was applied again at a pulling speed of 200 mm / min until the gripped portions were each stretched by 30%. The load at the time when the portion was extended by 30% was measured as the load at the maximum point. Then, the holding was performed for 1 minute when each of the gripped portions was extended by 30%, and then the load was removed. In this manner, the operation of measuring the load at the maximum point is defined as the minimum point when the load is removed, the load is applied again after the load is removed, and the maximum point is when the gripped portion extends 30%. Repeated three times.

(Measurement of washing method and dimensional change rate)
The measurement of the dimensional change rate was carried out by applying the C4N method of JIS L 1930 mutatis mutandis, by measuring the length L1 of the measuring section of the sock 11 obtained in each of the examples and comparative examples when not in use, and after a predetermined number of washings The length L2 of the measurement section was measured and determined by the following equation.

Dimensional change rate (%) = (L2−L1) / L1 × 100
Washing was performed under the following conditions. I went like that. First, the socks 11 obtained in each Example and Comparative Example were washed with a fully automatic washing machine using a water temperature of 40 ± 3 ° C., a washing water amount of 40 L, a washing time of 15 minutes, and a detergent amount of 1.33 g / L (as a standard detergent). "Attack" (registered trademark) manufactured by Kao Corporation), dewatering time after washing 3 minutes, rinsing frequency twice, first rinsing water volume 40 L, first rinsing time 2 minutes, first dehydrating time After 3 minutes, the second rinse water amount of 40 L, the second rinse time of 2 minutes, the second dehydration time of 7 minutes, and after the second rinse, it was hung and dried at room temperature (23 ° C. to 25 ° C.) for 12 hours or more.

(Evaluation of discoloration)
The degree of color change (discoloration) after the washing wear test was evaluated by a series based on a discoloration fading gray scale of JIS L0805.

[Example 1]
The front yarn 3 is made of ivory-colored cotton yarn (100% cotton) that has been dyed in ivory color before knitting. The back yarn 2 is ivory-dyed in knitting before knitting. In addition, using a PTT of 150D / 72F that has not been subjected to artificial crimping, using a K-type pile machine with a 5-inch hook diameter and 84 stitches for the knitting machine, the following set-up The sock 11 of the plating knitting shown by the solid line in FIG. (1) Mouth width A: 8.7 cm, (2) Leg width B: 9.7 cm, (3) Sole width C: 10.2 cm, (4) Total length D: 19.0 cm, (5) Sole length E: 20.0 cm.

  Here, the "mouth rubber width A" indicates the width of the mouth rubber part 12 (wearing mouth) on the side surface of the sock 11 in a flat state, which is indicated by "A" in FIG. “Leg width B” indicates the width of the intermediate portion of the leg portion 13 on the side surface of the sock 11 in a flat state, which is indicated by “B” in FIG. The “sole width C” is the height of the sole 16 of the portion (hereinafter, referred to as the “foot portion 14”) from the leg portion 13 on the side surface of the sock 11 in the flat state, which is indicated by “C” in FIG. The width of the side surface of the portion between the intermediate portion and the instep portion 15 is shown. “Total length D” indicates the length between the elastic part 12 and the heel part 18 on the side surface of the sock 11 in a flat state, which is indicated by “D” in FIG. “Sole length E” indicates the length between the toe portion 17 and the heel portion 18 on the side surface of the sock 11 in the flat state, which is indicated by “E” in FIG. The “mouth rubber length F” is the length of the mouth rubber portion 12 (the rubber mouth portion in the direction perpendicular to the width direction of the rubber mouth portion 12) on the side surface of the sock 11 in the flat state, as indicated by “F” in FIG. 12 length).

  After that, the socks 11 were subjected to five sets of washing wear tests in which the socks 11 were worn for about 12 hours and the washing using the above-described washing method as one set. The dimensional change rates of the mouth rubber width A, the leg width B, the sole width C, the total length D, and the sole length E, which are indicated by "E", were measured.

[Comparative Example 1]
For the front yarn 3, use a hand-spun cotton yarn (100% cotton) of about 6th cotton, ivory-dyed before knitting, and dye the back yarn 2 to ivory before knitting. Using a 40/70 FTY, which has not been subjected to artificial crimping, and using a K-type pile machine with a 4.5 inch hook diameter and 84 stitches, The sock 11 of the plating knitting shown by the solid line in FIG. (1) Cuff width A: 9.0 cm, (2) Leg width B: 8.6 cm, (3) Sole width C: 8.7 cm, (4) Total length D: 19.0 cm, (5) Sole length E: 17.5 cm. Since the surface yarn 3 is not spun but hand-spun, the above count is approximate.

  After that, five sets of washing wear tests were performed in the same manner as in Example 1, and then, in the sock 11, in FIG. 5, "A" to "E" indicate a mouth rubber width A, a leg width B, and a sole width. The dimensional change rates of C, total length D, and sole length E were measured.

  Table 6 summarizes the dimensional change rates measured in Example 1 and Comparative Example 1. In addition, FIG. 5 shows the shape of the sock 11 according to Example 1 by a dashed line after performing five sets of washing wear tests, and FIG. 5 illustrates the results of performing five sets of washing wear tests. The shape of the sock 11 according to Comparative Example 1 is indicated by a dashed line. Further, FIG. 6 shows the appearance of the sock 11 according to Example 1 and Comparative Example 1 after performing five sets of washing wear tests.

[Example 2]
For the front yarn 3, use a knitted yarn of 72th count (43th count in cotton count), 75% wool and 25% polyester, which has been dyed black before knitting. Using a PTT of 75D / 32F, which has not been subjected to artificial crimping and has been dyed black before, and a knitting machine using a riblinks machine with 200 needles, A plurality of plating-knitted socks 11 shown in FIG. (1) Mouth width A: 8.7 cm, (2) leg width B: 7.9 cm, (3) sole width C: 8.8 cm, (4) total length D: 27.2 cm, (5) sole length E: 25.2 cm.

  Thereafter, one of the above socks 11 is washed five times in the non-wearing state using the above-described washing method, and then, in the socks 11, the cuff width A, the leg width B, the sole width C, the total length D, The measurement of each dimensional change rate of the sole length E, the evaluation of discoloration and fading, and the observation of visual change in appearance were performed. Also, in another part of the sock 11, a portion between the instep portion 15 and the sole portion 16 of the intermediate portion of the sole portion 16 of the rubber portion 12, the intermediate portion of the leg portion 13, and the foot portion 14 of the foot portion 14. The load at the maximum point (that is, the load required to extend each of the mouth rubber width A, the leg width B, and the sole width C by 30%) was measured.

[Example 3]
A plurality of socks 11 having the following set-up dimensions were produced in the same manner as in Example 2 except that the back yarn 2 was a 150D / 72F PTT black dyed before knitting. (1) Rubber mouth width A: 8.5 cm, (2) leg width B: 7.9 cm, (3) sole width C: 8.8 cm, (4) total length D: 27.5 cm, (5) sole length E: 24.5 cm.

  Thereafter, one of the above socks 11 is washed five times in the non-wearing state using the above-described washing method, and then, in the socks 11, the cuff width A, the leg width B, the sole width C, the total length D, The measurement of the dimensional change rate of the sole length E and the evaluation of discoloration were performed. The load at the maximum point was measured for the other one of the socks 11 in the same manner as in Example 2.

[Comparative Example 2]
For the front yarn 3, use a knitted yarn of 72th count (43th count in cotton count), 75% wool and 25% polyester, which has been dyed black before knitting. Using a 20/75 FTY, which has been previously dyed black and not subjected to artificial crimping, and a knitting machine, using a riblinks machine with 200 needles, A plurality of plating-knitted socks 11 shown in FIG. (1) Mouth width A: 7.5 cm, (2) leg width B: 7.3 cm, (3) sole width C: 8.0 cm, (4) total length D: 26.0 cm, (5) sole length E: 22.9 cm.

  Thereafter, one of the above socks 11 is washed five times in the non-wearing state using the above-described washing method, and then, in the socks 11, the cuff width A, the leg width B, the sole width C, the total length D, The measurement of each dimensional change rate of the sole length E, the evaluation of discoloration and fading, and the observation of visual change in appearance were performed. The load at the maximum point was measured for the other one of the socks 11 in the same manner as in Example 2.

  Table 7 shows the dimensional change rates measured in Examples 2 and 3 and Comparative Example 2. Table 8 shows the loads at the maximum points measured in Examples 2 and 3 and Comparative Example 2.

  FIG. 7 shows the sock 11 “not worn” prepared in Example 2 and the sock 11 after 20 days (20 times) of wearing for one day and normal washing performed in a general household. (Socks 11 after 20 sets of washing wear test) are shown side by side. Further, FIG. 8 shows the sock 11 “not worn” produced in Comparative Example 2 and the sock 11 after repeating the wearing for one day and the normal washing performed in a general home for 20 days (20 times). (Socks 11 after 20 sets of washing wear test) are shown side by side. In addition, as shown in FIG. 7, the socks 11 according to Example 2 after 20 times of wearing (after 20 sets of washing tests), and FIG. 8 after 20 times of wearing according to Comparative Example 2 (of 20 sets). Table 9 summarizes the measurement results of the dimensional change rates of the mouth rubber width A, the leg width B, the sole width C, the total length D, and the sole length E of the socks 11 after the washing wear test.

  From the results shown in Table 6, Table 7, Table 9, and FIGS. 4 to 8, the dimensions of the sock 11 according to the comparative example are greatly changed, but the socks 11 according to the example (the present invention) are comparatively different. It can be seen that the change is clearly smaller than the sock 11 according to the example. Therefore, according to the above-described embodiment, the desired form stability in which shrinkage due to washing was suppressed despite the use of natural fiber yarns or yarns with a high natural fiber content that are easily shrunk by washing for the front yarn 3 was obtained. It can be seen that a sock 11 capable of holding the socks can be provided. In addition, compared with the dimensional change rate of the sock 11 before wearing according to Example 2 shown in Table 7, the dimensional change rate of the sock 11 after wearing 20 times according to Example 2 shown in Table 9 is clearer. Is small, but it is considered that the reason is that the elongation is appropriately given by being worn on the foot, and as a result, the shape before the wearing is maintained. From this, it turns out that form stability can be more reliably maintained by wearing. Further, as described above, the socks 11 (products of the present invention) according to the examples can use dyed yarn, and as shown in Table 7, have a grade 4 of discoloration and fading, and have a high color fastness. You can see that it is.

  Also, from the results shown in Table 8, the sock 11 according to the example has a smaller load at the maximum point than the sock 11 according to the comparative example. It can be seen that a more comfortable fit can be obtained.

  In particular, when the legwear 1 is a sock 11, it is generally known that the fastening of the rubber mouth portion 12 of the sock 11 greatly affects the feeling of wearing. It is desirable that the load at the maximum point of the mouth rubber width A is approximately in the range of 90 to 200 cN. If the load is lower than 90 cN, the sock 11 may slip down due to walking or the like. On the other hand, when the load exceeds 200 cN, discomfort due to tightening may occur.

  As described above, according to one embodiment of the present invention, it is possible to provide legwear that can use dyed yarn and can maintain desired form stability, and a method for manufacturing the same. Further, as described above, according to one embodiment of the present invention, dyed yarn can be used as described above, and a desired form stability can be maintained, and a comfortable fit can be obtained. Can be provided.

  In the above embodiment, as described above, the case where the legwear 1 according to the present invention is socks has been described as an example, but the legwear 1 is not limited to socks. Examples of the legwear 1 include various knit products that require elasticity with elastic yarn and cover at least a part of legs, such as spats, leg warmers, leggings, trousers, tights, stockings, and various supporters.

[Summary]
The legwear according to the first aspect of the present invention has a morphological stabilizing portion having a plating structure knitted by a front yarn and a back yarn, wherein the morphological stability portion includes the front yarn including a natural fiber and the back yarn. The yarn consists of a tubular knitted fabric made of only polytrimethylene terephthalate fiber.

  In the legwear according to the second aspect of the present invention, in the first aspect, when a ratio of the thickness of the back yarn to the thickness of the front yarn is a ratio R, the ratio R is 0.6 to 8.9. It may be within the range.

  In the legwear according to the third aspect of the present invention, in the second aspect, the natural fiber may be a plant fiber, and the ratio R may be in a range of 2.7 to 8.9.

  In the legwear according to aspect 4 of the present invention, in the aspect 2 or 3, the natural fiber may be a vegetable fiber and the back yarn may be in a range of 125 to 175 denier.

  In the legwear according to the fifth aspect of the present invention, in the fourth aspect, the back yarn may be 150 denier.

  In the legwear according to aspect 6 of the present invention, in the aspect 4 or 5, the ratio R may be in a range of 3.3 to 8.9.

  In the legwear according to the seventh aspect of the present invention, in the third aspect, the back yarn may be 75 denier, and the ratio R may be in a range of 2.7 to 7.1.

  In the legwear according to the eighth aspect of the present invention, in the second aspect, the back yarn may have a denier of 50 to 100, and the ratio R may be in a range of 1.2 to 7.1.

  In the legwear according to the ninth aspect of the present invention, in any one of the first to eighth aspects, the surface yarn may be less than 12th in terms of cotton count.

  In the legwear according to aspect 10 of the present invention, in the aspect 2, the natural fiber may be animal hair fiber, and the ratio R may be in a range of 0.6 to 1.8.

  In the legwear according to aspect 11 of the present invention, in the above aspect 10, the back yarn may be in a range of 125 to 175 denier, and the ratio R may be in a range of 0.6 to 0.9. .

  In the legwear according to the twelfth aspect of the present invention, in the eleventh aspect, the back yarn may be 150 denier.

  In the legwear according to the thirteenth aspect of the present invention, in the tenth aspect, the back yarn may be 75 denier, and the ratio R may be in a range of 1.2 to 1.8.

  In the legwear according to aspect 14 of the present invention, in any one of aspects 1 to 13, the legwear may be socks.

  In the legwear according to the fifteenth aspect of the present invention, in the fourteenth aspect, the form stabilizer may be provided on the leg part and knitted by rib knitting.

  The legwear according to the sixteenth aspect of the present invention is the legwear according to the fourteenth aspect or the fifteenth aspect, in which the entire sock is gripped at an interval of 5 cm, and a load is applied at a pulling speed of 200 mm / min until each gripped portion extends 30%. After holding for 1 minute when each of the portions stretched by 30%, the load was removed. After 3 minutes, a load was applied again at a pulling speed of 200 mm / min until the gripped portions were each stretched by 30%. The load applied to the rubber portion of the sock at the time of% elongation may be in the range of 90 cN to 200 cN.

  The method for producing a legwear according to the seventeenth aspect of the present invention is a step of forming a form-stable portion comprising a tubular knitted fabric plated with a face yarn containing natural fibers and a back yarn consisting of only polytrimethylene terephthalate fibers. including.

  In the method for manufacturing legwear according to Aspect 18 of the present invention, in the aspect 17, in the step of forming the morphologically stable portion, a ratio R of a thickness of the back yarn to a thickness of the front yarn is defined as: The front yarn and the back yarn may be selected such that the ratio R is in the range of 0.6 to 8.9.

DESCRIPTION OF SYMBOLS 1 Leg wear 2 Back yarn 3 Front yarn 11 Socks (leg wear)
13 legs

Claims (18)

It has a form stability part having a plating structure knitted with a front yarn and a back yarn,
The form stabilizer is
A legwear wherein the front yarn includes a natural fiber, and the back yarn is formed of a tubular knitted fabric formed only of polytrimethylene terephthalate fiber.   The leg according to claim 1, wherein the ratio R is in a range of 0.6 to 8.9, where a ratio of a thickness of the back yarn to a thickness of the front yarn is a ratio R. Wear. The natural fiber is a vegetable fiber,
The legwear according to claim 2, wherein the ratio R is in a range of 2.7 to 8.9. The natural fiber is a vegetable fiber,
4. The legwear according to claim 2, wherein the back yarn is in a range of 125 to 175 denier. 5.   The legwear according to claim 4, wherein the back yarn is 150 denier.   The legwear according to claim 4 or 5, wherein the ratio R is in a range of 3.3 to 8.9. The back yarn is 75 denier,
The legwear according to claim 3, wherein the ratio R is in a range of 2.7 to 7.1. Said backing yarn is 50-100 denier,
The legwear according to claim 2, wherein the ratio R is in a range of 1.2 to 7.1.   The legwear according to any one of claims 1 to 8, wherein the number of the surface yarns is less than 12 in cotton count. The natural fiber is animal hair fiber,
The legwear according to claim 2, wherein the ratio R is in a range of 0.6 to 1.8. The back yarn is in the range of 125 to 175 denier,
The legwear according to claim 10, wherein the ratio R is in a range of 0.6 to 0.9.   The legwear according to claim 11, wherein the back yarn is 150 denier. The back yarn is 75 denier,
The legwear according to claim 10, wherein the ratio R is in a range of 1.2 to 1.8.   The legwear according to any one of claims 1 to 13, wherein the legwear is a sock.   The legwear according to claim 14, wherein the form stabilizer is provided on the leg and is knitted by rib knitting.   The entire sock is gripped at 5 cm intervals, and a load is applied at a pulling speed of 200 mm / min until the gripped portions are each extended by 30%. After 3 minutes, a load is applied again at a pulling speed of 200 mm / min until the gripped portions extend 30%, and when the gripped portions extend 30%, the load applied to the rubber cuff of the sock is 90 cN to 200 cN. The legwear according to claim 14 or 15, wherein   A method for producing legwear, comprising a step of forming a form-stable portion made of a tubular knitted fabric plated and knitted with a face yarn containing natural fibers and a back yarn consisting only of polytrimethylene terephthalate fibers.   In the step of forming the morphologically stable portion, assuming that the ratio of the thickness of the back yarn to the thickness of the front yarn is a ratio R, the ratio R is in the range of 0.6 to 8.9. The method according to claim 17, wherein the front yarn and the back yarn are selected.