JPH0418102A - Stocking and production thereof - Google Patents

Abstract

PURPOSE:To obtain the subject stocking excellent in visual appearance, fitness and wear comfort by knitting, e.g. an elastic conjugate yarn composed of a polyurethane- based elastic core yarn and a polyamide-based synthetic sheath yarn while changing the ratio of feed yarn length for the respective parts using a circular stocking-knitting machine. CONSTITUTION:An elastic conjugate yarn alone composed of a polyurethane-based elastic rubber core yarn and a polyamide-based synthetic multi-filament sheath yarn is fed or the conjugate yarn and a polyamide-based synthetic multi-filament yarn are alternately fed to a circular stocking-knitting machine and knitted into a stocking 1 while changing the yarn length ratio of the elastic conjugate yarn fed respectively to the ankle region 4 of the stocking 1, the calf region 5 and the femoral region 6 to a feed yarn length for the arc region of the foot 2 in order so that the respective values for the arc region of the foot, the ankle region, the calf region and the femoral region may be controlled to 100, 100-105, 140-145 and 150-155, thus obtaining the objective stocking in which the sum of stress in recovery from elongation in the longitudinal and lateral directions of the knitted ground fabric constituting the respective regions is the maximum in the arc region of the foot and the minimum in the femoral region while decreasing the above-mentioned value from the arc region of the foot through the ankle region to the calf region in order.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to stockings (including pantyhose) knitted using a round stocking knitting machine and a method for manufacturing the stockings.

(Prior art) Stockings are knitted by using only a composite elastic yarn consisting of a core yarn of polyurethane-based rubber-like elastic yarn and a covering yarn of polyamide-based synthetic fiber multifilament yarn, or
Or, by knitting by alternately supplying the above composite elastic system and polyamide synthetic fiber multifilament yarn, the stockings have elasticity, good cosmetic properties, and support power that alleviates the feeling of fatigue. some)
Y King is known.

(Problem to be Solved by the Invention) However, conventionally, when knitting pantyhose using the above-mentioned composite elastic yarn, the thickness of the polyurethane-based rubber-like elastic core thread of the composite elastic yarn was adjusted to Although the leg part may be changed, each part such as the arch, ankle, calf, and thigh is knitted using the same composite elastic yarn on a circular knitting machine of the same diameter, and then knitted into the foot shape. Since I was putting it in and molding the above parts to different thicknesses,
The stretching force of the knitted fabric in each part such as the arch, ankle, calf, and thigh, as well as the pressure on the human body at each part when worn, that is, the wearing pressure, are not comfortable for the human body, such as There was a problem in that the wearing pressure was too low in the arch area and too high in the thigh area.

Attempts have been made to change the wearing pressure by changing the size of the stitch loops in the arch, ankle, calf, and thigh areas, but conventionally, the size of the stitch loops in each of the above areas was The thickness was changed according to the circumference of each part, and the last step was only used to mold the product in the final process of dyeing and finishing, so the ratio of the wearing pressure between each part was not appropriate.
The wearing feeling was not good because the wearing pressure was the highest in the calf region, and the wearing pressure in the thigh region was greater than that in the arch and ankle regions.

This invention provides stockings that are comfortable to wear by knitting the knitted fabric so that the stress upon recovery from stretching is greatest at the arch of the stocking and decreases in the order of the ankle, calf, and thigh. It is something.

(Means for Solving the Problems) The stockings of the present invention include a core yarn made of polyurethane-based rubber-like elastic yarn, and a covered yarn made of polyamide-based synthetic fiber multifilament yarn wrapped single or double around the core yarn. In circular knit stockings knitted by supplying composite elastic yarn consisting of polyamide-based synthetic fiber multifilament yarn alone or alternately with polyamide-based synthetic fiber multifilament yarn, the knitting that constitutes each part of the arch, ankle, calf, and thigh. It is characterized in that the sum of stress during recovery from vertical and horizontal extension is greatest at the arch, decreases in the order of ankle and calf, and is lowest at the thigh.

In addition, the method for manufacturing stockings according to the present invention is such that a composite elastic yarn consisting of a core yarn of a polyurethane-based rubbery elastic yarn and a covering yarn of a polyamide-based synthetic fiber multifilament yarn is applied to a Marutsushita & H machine, or a polyamide-based When knitting stockings by supplying synthetic fiber multifilament yarn alternately, the ratio of the yarn feeding length of the above-mentioned composite elastic yarn at the arch of the stocking to the yarn feeding length of the ankle, calf, and thigh areas is determined. The fabric is knitted by changing the ratios in order and setting these ratios for the arch region 100, ankle regions 100-105, calf regions 140-145, and thigh regions 150-155, respectively.

In FIG. 1, the arch portion 2 of the stocking 1 corresponds to approximately the center of the arch of a human foot. The ankle part 4, calf part 5, and thigh part 6 of the stocking 1 are about 11 CI+, about 281 CI+, and about 5901 CI above the heel part 3 of the stocking 1, respectively, when worn by a woman with a standard figure in Japan. corresponds to

In addition, the stress at the time of recovery from elongation is calculated by cutting a sample with radius 51 and length l0CI+ from the knitted fabric constituting stocking l.
This sample was attached to a tensile tester and the tensile speed was 20C1.
It is the stress when elongated by 150% under the condition of +/min, then recovered at the same speed, and the elongation returns to half, 75%.
FIG. 2 is an example of a strength and elongation curve drawn in this way, and the height of the point P at the end is the stress at the time of recovery from the above-mentioned elongation. In the present invention, the sum of the stress during recovery from the above-mentioned extension in the vertical and horizontal directions is the largest at the arch 2, smaller in the order of the ankle 4, the leg 5 and the thigh 6, and The thigh 6 is set to be the minimum (
(see curve A in Figure 3). In addition, the sum of stresses when the knitted fabric recovers from stretching in the vertical and horizontal directions is 38 to 55 g at the arch 2, 32 to 38 g at the ankle 4, 32 to 38 g at the calf 5, and 32 to 38 g at the thigh 6. 25 to 32 g is preferable.

In order to manufacture the above-mentioned stockings, a round stocking knitting machine is used in the same way as in the past. The yarn feeding length of the knitting yarn such as the composite elastic yarn and the polyamide synthetic fiber multifilament yarn is set so that the yarn has the above-mentioned size. This yarn feeding length is determined by the diameter of the knitting machine,
Although it varies depending on the number of needles, the thickness and form of the knitting yarn, 90 to 105 C1l is preferable for one circumference of the arch portion 2, and when the yarn feeding length of the arch portion 2 is 100,
The yarn feeding length of the composite elastic yarn is 100 to 105 at the ankle portion 4,
In addition, the calf part 5 is 140 to 145, and the thigh part 6 is
are set to 150 to 155, respectively. However, when inter-knitting polyamide synthetic fiber multifilament yarn, the yarn feeding length is 100 at the arch and 95 to 10 at the ankle.
0, calf region 135-140, and thigh region 145
-150 are respectively preferable.

In addition, the fineness of the polyurethane-based rubber-like elastic thread constituting the composite elastic thread is preferably 10 to 30 deniers.

In addition, the fineness of the polyamide synthetic fiber multifilament yarn used as a covering yarn of the composite elastic yarn and the polyamide synthetic fiber multifilament yarn used for cross-knitting with the composite elastic yarn is 5 to 30 deniers, and the above-mentioned The fineness of the filaments constituting the polyamide synthetic fiber multifilament yarn is preferably 0.5 to 3.0 deniers.

(Function) The main factors that affect the feeling of wearing stockings 1 are texture, fit, and tightness, and appearance is another selection factor, but the stress at the time of recovery from elongation is used as a measure of the tightness. However, when measuring the stress of various types of stockings at the time of recovery from extension in the arch 2, ankle 4, calf 5, and thigh 6 and comparing the feeling of wearing them, we found that the stress at the time of recovery from extension was compared. There are individual differences in whether people prefer large stockings or comparatively small stockings, but the arch part 2 above,
It was found that the mutual relationship of stress during recovery from extension in each of the ankle region 4, calf region 5, and thigh region 6 had almost the same tendency. In other words, as a result of the wear test, the stress during stretch recovery of the stocking 1 was made strongest at the arch 2, then weakened in the order of the ankle 4, calf 5, and thigh 6, and when the thigh 6 was made the weakest. ,
It is judged to be the most comfortable to wear. In addition, the stress when the knitted fabric is stretched by 150%, then immediately recovered, and the elongation returns to half, that is, the stress at the time of recovery from stretching, is greater than the stress when the knitted fabric is stretched. The total stress at the time of recovery from elongation in the horizontal direction has a better correlation with the feeling of wearing. This is because the knitted fabric of the stockings is stretched approximately 1.5 times when worn, and when worn, the stretch is returned to about half, and it fits to the skin and tightens the legs, and the knitted fabric acts in one direction. This is thought to be due to the fact that it hits the skin in a balanced state as a sum of both the vertical and horizontal directions, rather than the power. However, the stress at the time of recovery from this extension is 38 to 55 g at the arch 2 and 32 to 3 g at the ankle 4.
8g, thighs (28-32g at leg 5, 25g at thigh 6)
If it deviates from the range of ~32 g, the feeling of wearing will decrease.

Therefore, in the above stockings 1, the yarn feeding length of the composite elastic yarn in the round leg knitting machine is 100 in the arch part 2, 100 to 105 in the ankle part 4, and 14 in the calf part 5.
0 to 145, and thigh 6 to 150 to 155. In addition, when cross-knitting with polyamide synthetic fiber multifilament yarn, set the yarn feeding length according to the above composite elastic yarn, and
0, ankle part 4 to 95-100, calf part 5
A preferable wearing feeling can be obtained by setting the width of the thigh part 6 to 135 to 140 and the thigh part 6 to 145 to 150. However, if the difference in yarn feeding length between adjacent courses is too large, a horizontal step will occur, so it is desirable to reduce the difference in yarn feeding length and change the yarn feeding length in stages.

(Example) A spandex filament yarn (30 denier) was used as the core yarn of the composite elastic yarn, and a nylon multifilament yarn (10 denier 5 filament) was used as the covering yarn. Draft 3 times as much and add two coated nylon multifilament yarns on top of it, with the number of twists of the first twist being 27.
00 times/plow, and the number of twists for ply twisting is 2400 times/lI
A composite elastic yarn of a double covering yarn was manufactured by winding the first twist and the first twist in opposite directions. This composite elastic yarn and nylon multifilament yarn (<10 denier 5 filaments) were used with 4 needles.
Stockings 1 of Example 1 were knitted by alternately supplying 1 course of 00 pieces to a stocking knitting machine with a diameter of 4 inches. However, the yarn feeding length of the arch part 2 during this knitting is set to 101c11 for the composite elastic yarn and 950 for the nylon multifilament yarn, and the yarn feeding length of the arch part 2 is set to 100. The yarn feeding length was set as shown in Table 1 below.

(Blank below) Table 1 Composite elastic yarn Nylon yarn Arch area 100 100 Ankle area
103 9B Calf part 143
138 Thigh 154 150 For comparison, stockings of a comparative example were knitted in exactly the same manner as in the above example, except that the ratio of yarn feeding length was adjusted to match that of the conventional stockings. However, the yarn feeding length at the arch portion was 9501 for both the composite elastic yarn and the nylon yarn. The yarn feeding length ratio at that time is shown in Table 2 below.

Table 2 Composite elastic yarn Nylon yarn Arch area 100 100 Ankle area
103 95 Calf region 120
120 Thigh 135 135 After dyeing and finishing the obtained stocking fabrics of Examples and Comparative Examples in a normal process, the stress (g) at the time of elongation recovery of the knitted fabrics in each of the above parts was measured.

The results are shown in Table 3 and Figure 3 below. In FIG. 3, A is an example and B is a comparative example.

Table 3 Example Comparative example Arch part 50 30 Ankle part
37 22 Calf region 32
40 Thigh 29 38 When 46 panelists conducted a wear test on the stockings of the above examples and comparative examples, 38 people found the stockings of the examples to be good, while the comparative examples had a good feeling of wearing. There were 3 people who rated it as good, and the example was clearly superior.

(Effects of the Invention) The invention according to claim 1 provides circular knit stockings knitted using composite elastic yarn, in which the stress at the time of elongation recovery of the knitted fabric is maximized at the arch of the foot, and the stress at the ankle and calf is maximized. Since it is made smaller in the order of the lower part and the upper part of the thigh, it has good cosmetic properties and fit, and is also more comfortable to wear than those using conventional composite elastic threads.

In addition, when knitting stockings using a rubber-like elastic system, the invention according to claim 2 changes the yarn feeding length of the composite elastic yarn in each part of the stocking, and the yarn feeding length of the arch part is 10.
0, ankle region 100-105, calf region 140
145 and thighs 150 to 155, respectively, so that the stockings according to claim 1 can be obtained. Further, since only the yarn feeding length is changed, manufacturing is easy and horizontal steps do not occur.

[Brief explanation of the drawing]

FIG. 1 is a side view of the stocking, FIG. 2 is a graph of a strong elongation curve for explaining the stress at the time of recovery from elongation, and FIG. 3 is a graph showing the stress at each part of the stocking at the time of recovery from elongation. 1 stockings, 2: arch region, 3: heel region, 4: ankle region, 5: calf region, 6: thigh region. Figure 3

Claims (1)

[Scope of Claims] [1] A composite elastic yarn consisting of a core yarn of polyurethane-based rubber-like elastic yarn and a covered yarn of polyamide-based synthetic fiber multifilament yarn, alone or alternately with polyamide-based synthetic fiber multifilament yarn. In the supplied and knitted circular knit stockings, the sum of the stresses when the knitted fabrics that make up the arch, ankle, calf, and thigh recover from the vertical and horizontal stretch is the highest at the arch. The stockings are characterized by lowering in the order of the ankle region and calf region, and being lowest at the thigh region. [2] A composite elastic yarn consisting of a core yarn of polyurethane-based rubbery elastic yarn and a covering yarn of polyamide-based synthetic fiber multifilament yarn is supplied to the Marutsu bottom knitting machine either alone or alternately with polyamide-based synthetic fiber multifilament yarn. When knitting stockings, the ratio of yarn feeding lengths of the ankle, calf, and thigh to the yarn feeding length of the composite elastic yarn in the arch of the stocking is changed in order, A method of manufacturing stockings, characterized in that the stockings are knitted in sections 100-105, calves 140-145, and thighs 150-155.