JP2977687B2 - Covering stockings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stocking having a leg portion knitted only with polyurethane covering yarn.

[0002]

2. Description of the Related Art For women's stockings, a real twist torque yarn obtained by strongly twisting a nylon filament yarn or a wooly nylon yarn obtained by subjecting a nylon filament yarn to false twisting is used. However, such a stocking has a drawback that, when it is worn for a long time or when it is wet with water, it causes a thickening on the knee or ankle because the stocking uses the twisting torque force of nylon or the crimping elasticity of false twisted yarn.

On the other hand, as a stocking in which such a tarmi is improved, a stocking in which a covering yarn obtained by winding a nylon filament yarn on a fine denier polyurethane elastic yarn and one nylon filament yarn are alternately knitted (hereinafter referred to as a knitting stocking). Conventionally known.

In the knitting stocking, the knitting stocking shown in FIG. 2 in which one covering yarn and one nylon filament are alternately knitted in the knitting process (9 is a covering yarn, 10 is a nylon filament yarn) and has an appropriate fit. It has properties and tightening force. However, as is apparent from FIG. 2, the mixed knitting stocking has different types of fibers having different physical properties alternately arranged. There is a disadvantage that is inferior.

[0005] As a stocking which eliminates such unevenness of the course and has an excellent fitting property and a tightening force, a stocking in which all the covering threads are knitted without alternately arranging the above-mentioned covering threads and nylon filament threads. (Hereinafter referred to as covering stockings) has been attempted.

[0006]

However, such covering stockings have the following problems. In a usual method of manufacturing a stocking, after knitting, processing such as sewing of a tip of a nail, sewing of a panty portion, dyeing, and the like are performed, and heat setting is performed in a state where the stocking is inserted into a foot-shaped aluminum plate to finish to an appropriate size. The purpose of the heat setting is to improve the appearance of the knitted fabric by stretching the knitted fabric to an appropriate size and setting the mold, and to set the placement dimensions (dimensions when the stockings are placed on the board) to an appropriate size. In order to be able to wear it without difficulty.

[0007] In particular, in the covering stocking, the ratio of the polyurethane elastic yarn is higher than that in the knitted stocking, and the stretching elastic force is proportionally larger . Follow
Te, although depending on the product size, usually from garnishing destination, and置寸method of up to leg top portion (L ₀ in FIG. 4) is 60cm below, sequentially from garnishing destination, unless you置用while carefully stretched, can wear Not only that, there is a drawback that if you try to wear it forcibly, it will break.

However, a covering stocking made by covering and knitting a conventional polyurethane elastic yarn,
Since the heat setting property of the polyurethane elastic yarn is poor, the polyurethane elastic yarn shrinks greatly at the time of setting the last, so that there is a drawback that only a stocking with an extremely small set size can be obtained.

Further, when the conventional covering yarn is knitted into a covering stocking, the unevenness of the course interval and the apparent fineness unevenness of the covering yarn forming the course are reduced.
The course becomes uneven and only stockings with inferior appearance can be obtained. In a stocking in which one covering yarn and one nylon are alternately arranged, two types of yarns having different physical properties are alternately knitted, and as described above, the knitted fabric has a "weave" like course unevenness. The knitted fabric defect is hidden by the unevenness of the course, but the covering yarn stocking knits the covering yarn having the same physical properties and the knitted fabric is uniform.

[0010] An object of the present invention is to eliminate the above-mentioned disadvantages, to provide an appropriate size after setting the last, to be easy to wear, to have no defects such as uneven course, and to have a uniform appearance and a clear appearance. It consists in providing a covering stocking. It is another object of the present invention to provide the above-mentioned covering stocking in which the dimensions of the legs and the dimensions of the panties are balanced.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a core yarn composed of a polyurethane elastic yarn having a heat setting rate of 70% or more, which is melt spun, and a nylon filament yarn wound around the core yarn. Covering stockings with knitted parts and heat setting rate of 60%
The covering stocking having a panty portion knitted using a covering yarn obtained by winding a nylon filament yarn around a polyurethane elastic yarn described below.

Further, for example, the covering stocking is prepared by melt-spinning polyurethane by adding a crosslinking agent of 0.75% by weight or less per polyurethane elastic body in terms of NCO group weight, winding the polyurethane once, and then covering with nylon filament. After ringing, at least the leg portion is knitted and sewn using only the covering thread, and then 130 ° C.
It can be obtained by heat setting or the like below.

The heat setting rate according to the present invention is a basic physical property of the polyurethane elastic yarn relating to the setting property at the time of setting the stocking last. Generally, polyurethane elastic yarn has high heat resistance and poor heat setting property when setting a last. And
In the case of a covering stocking made of polyurethane elastic yarn having a heat setting rate of less than 70%, the stocking shrinks greatly at the time of setting the last, resulting in a stocking of a small size, which is extremely difficult to wear. on the other hand,
In the case of covering stockings where the heat setting rate of the polyurethane elastic yarn used for the panty part exceeds 60%, the leg part placement dimension is sufficiently large, but the panty part is stretched due to the contraction stress of the leg part at the time of heat setting, The placement size of the panty portion is extremely long, and the leg portion and the panty portion have unbalanced stockings. As a result, the fit of the panty portion in the vertical direction when worn is poor.

That is, the stocking according to the second aspect uses a polyurethane elastic yarn having a good heat setting property for the leg portion,
The panty portion is a covering stocking using polyurethane elastic yarn having relatively poor heat setting property, and the difference in heat setting ratio between the leg polyurethane elastic yarn and the panty polyurethane elastic yarn is at least 10%, preferably 2%.
Desirably, it is 0% or more.

[0015] Measurement method according heat setting rate, the length l ₀ a load of fineness per 5mg of polyurethane elastic yarn and sample length. Next, the sample is stretched twice, and in the stretched state, heat-treated with boiling water for 5 minutes. Next, the sample is air-cooled, relaxed, left to stand at 25 ° C. × 65% RH for 30 minutes, and the length l ₁ is measured under a load of 5 mg / d. From the above measurements, the heat setting rate is defined below.

[0016]

(Equation 1)

The polyurethane elastic yarn heat setting rate is greater than 70%, to obtain this by a wet spinning method or a dry spinning process is difficult, can be obtained by a melt spinning method.
When ordinary dry spinning or wet spinning polyurethane elastic yarn is used for the covering stocking, the above-described uneven knitting (coarse unevenness) frequently occurs, and a stocking with good appearance cannot be obtained. This is presumed to be due to the fact that the melt-spun polyurethane elastic yarn has extremely good fineness uniformity as compared with the dry or wet-spun polyurethane elastic yarn.

[0018] As the heat setting rate polyurethane elastic yarn has greater than 70%, after melting the thermoplastic polyurethane polymer, from a spinneret extrusion, air cooling to the polyurethane elastic yarn obtained by melt spinning a polyurethane elastic yarn or melt take winding, After adding and mixing a polyfunctional isocyanate compound having a polyfunctional NCO terminal (hereinafter referred to as a cross-linking agent), a reaction melt-spun polyurethane elastic yarn extruded from a spinneret, air-cooled and wound up, and especially the latter method Is preferable in the present invention because the polyurethane elastic yarn has good abrasion resistance.

Regarding the reactive melt spinning method, Japanese Patent Publication No. Sho 58-4
As described in detail in, for example, Japanese Patent No. 6573, the polyisocyanate compound used in the reaction melt spinning method of the present invention has a molecular weight of 40 having an average of 2 or less NCO groups in one molecule.
0-3000 compounds are desirable.

When a small amount of a polyisocyanate having more than two NCO groups in one molecule is added to and mixed with a melted polyurethane elastic yarn, the melt viscosity becomes remarkably large and spinning becomes difficult. Even if the amount slightly fluctuates, the physical properties of the obtained polyurethane elastic yarn greatly fluctuate, and as a result, uneven knitting (coarse unevenness) due to the difference in physical properties of the polyurethane elastic yarn frequently occurs. Therefore, in order to increase the viscosity of the spinning process and to make the physical properties of the polyurethane elastic yarn uniform, the polyisocyanate compound contains NC in one molecule.
A compound having an average of 2 or less O groups is desirable,
It is more preferable to use a mixture of a polyisocyanate compound of a group and a polyisocyanate compound of which one is blocked.

The polyisocyanate compound having two or less NCO groups in one molecule has a hydroxyl group at both ends of the polyol,
4'-diphenylmethane diisocyanate (hereinafter MD)
I) is reacted twice as much as the amount of hydroxyl groups to obtain a polyisocyanate compound having NCO groups at both ends, and then alcohols can be obtained by a method of reacting 50% or less mol with respect to the amount of NCO groups. Further, the polyol having a hydroxyl group at both terminals is a polyol such as polyester, polyether, or polycarbonate, and is preferably a compound having a molecular weight of 300 to 2500. As the alcohol to be reacted with the polyisocyanate compound, an aliphatic alcohol having a boiling point of 50 ° C. or higher is used. And alcohols that are liquid at normal temperature, such as ethyl alcohol, butyl alcohol, isopropyl alcohol, and hexyl alcohol.

The crosslinking agent is preferably spun added in the following 0.75% by weight per polyurethane elastomer with NCO groups in terms of weight, the NCO groups in terms of weight, for example, NCO groups in the crosslinker as measured by an amine titration method When the weight% is A and the added amount of the crosslinking agent is B (% by weight), it is calculated by the following equation.

[0023]

(Equation 2)

The polyurethane elastic yarn used for the leg portion in the present invention will be described below. The fineness of the polyurethane elastic yarn is preferably in the range of 5d to 30d. Polyurethane elastic yarn thinner than 5d may have poor fit.
Is not preferred.

The hardness of the polyurethane elastic body is J
That be in the range of IS A hardness 83-93. In the case of a polyurethane elastic body having an A hardness of 83 or less, the polyurethane elastic yarn may be cut in a knitting step after covering. Further, in the case of a polyurethane elastic body having an A hardness of 93 or more, the elasticity after being made into a stocking may be insufficient, and a good fit may not be obtained.

The spinning conditions of the polyurethane elastic body are, for example, 0.2 to 240 ° C. after melting at 200 to 240 ° C., or after injecting the crosslinking agent into the molten polyurethane elastic body as described above and sufficiently mixing the same. Extrusion into the air from a 1.0 mmφ nozzle hole, cooling, and winding.

In the winding, the ratio of the distance L ₀ between the delivery roller and the winding traverse to the traverse width L ₁ is 1
5 × intends row without a 10 ^-2 or less. If the L ₁ / L ₀ ratio exceeds the above range, the width of fineness variation of the wound polyurethane elastic yarn becomes large, so that good stocking may not be obtained as described later. Further, it is desirable that the polyurethane elastic body wound and wound is left (aged) at room temperature for at least several days.

When the polyurethane elastic yarn obtained as described above is subjected to a load of 35 mg / d on the polyurethane elastic body and then heated from room temperature at a temperature rising rate of 3 ° C./sec, the polyurethane elastic body grows and stretches. Is twice as high as 150 ° C. or less.

The covering yarn used for the leg portion in the present invention is a polyurethane elastic yarn having a heat setting rate of 70% or more, preferably 80% or more, and usually a nylon filament of 3d to 20d wound thereon. It may be a single winding (single covering) or a double winding (double covering).

The number of twists during covering (the number of times the nylon filament is wound) is 800 to 3000 T /
M is desirable. FIG. 1 is a side view of a single covering machine showing an example of such a covering method. In the figure, the polyurethane elastic yarn Y ₁ is unwound from a package A and supplied to a take-up roller 4 via a supply roller 2 through a hollow spindle 3, while a package B rotated by the hollow spindle 3 The nylon filament Y ₂ is unwound and wound around the polyurethane elastic yarn under the twisting guide 8 to form a covering yarn Y ₃ . Here, 5 is a guide, 6 is a winding roller, and 7 is a winding package.

In the present invention, the above-mentioned object is achieved by using the covering yarn thus obtained for the leg portion, and further, the fineness variation width of the polyurethane elastic yarn at the time of covering is reduced. By setting the content to 18% or less, a stocking with more excellent appearance can be obtained.

Hereinafter, the fineness variation width of the polyurethane elastic yarn will be described in detail. First, in FIG. 1, the polyurethane elastic yarn is stretched between the roller 1 and the roller 2 and between the roller 2 and the roller 4, and the stretching magnification between them is referred to as a first-stage draft and a second-stage draft.

Here, for example, taking the covering machine of FIG. 1 as an example, only the polyurethane elastic yarn is run without winding the nylon filament, and a fineness measuring sensor is set above the twisting guide 8. The measured fineness variation width is defined as the fineness variation width of the polyurethane elastic yarn during covering.

When the measurement is performed without using a covering machine, the measurement may be performed by, for example, the apparatus shown in FIG. When measuring by the method of FIG. 3, the first-stage draft of the roller 1 and the roller 2 and the two-stage draft of the roller 2 and the roller 4 are:
The same conditions as the covering machine conditions are set, and the measurement is continuously performed by the fineness measuring sensor 11. As the fineness measuring sensor 11 for continuously measuring the fineness variation, a sensor based on a capacitance change measuring principle (such as "KET-80 TYPE C" of Evenness Tester of Keiki Kogyo Co., Ltd.) or a circular type When a monofilament is measured, a fiber diameter is measured optically (“C” manufactured by ZIMMER).
ONTROL UNIT 461D / 2 ").

The measurement conditions were 16 m per original length of the polyurethane elastic yarn, and its maximum fineness D _MAX and minimum fineness D _MiN were measured.
Is read from the chart, and the fineness variation width is calculated as follows.

[0036]

(Equation 3)

As described above, the meaning of measuring the variation in the fineness of the polyurethane elastic yarn under the covering condition is that the polyurethane elastic yarn is greatly expanded by a slight external force unlike ordinary nylon filament yarn or polyester filament yarn. This is because the polyurethane elastic yarn that has shrunk or wound up in the package will stick together over time.

As a result, even with the same polyurethane elastic yarn, the draft distribution at the time of covering, the low resistance of the guides, the degree of sticking on the package, and the like may result.
The variation width of fineness changes greatly. Therefore, it is preferable to set the covering condition to a condition in which the fineness variation width is 18% or less according to the physical properties of the polyurethane elastic yarn. When knitting the covering yarn covered under the condition that the fineness variation width is larger than 18% into the covering stocking, defects such as course unevenness due to uneven physical properties of the polyurethane elastic yarn appear, and a stocking with good appearance cannot be obtained. There is a risk.

Here, the covering condition for the fineness variation width to be 18% or less is the first stage draft × 2.
It is desirable that the first-stage draft is set to 1.5 to 3.5 and the first-stage draft is set to 1.1 to 2.2. In such a case,
The ratio of the first-stage draft to the second-stage draft is determined by measuring the fineness variation rate to make a draft distribution with a small variation width. That is, if the first-stage draft is not set large, the fineness variation width of the raw yarn in which the polyurethane elastic yarn has a large amount of sticking becomes large. On the other hand, polyurethane elastic yarns with little sticking have a disadvantage that if the first draft is too large, the fineness variation rate becomes large.

As a method of reducing the variation in fineness, the above-mentioned spun polyurethane elastic yarn is wound around a paper tube or the like with a traverse width of at most about 8 cm, and then subjected to a covering step.

The above-mentioned covering yarn is used to knit at least the leg portion of the stocking.
At this time, the single covering yarn having torque is S
It is preferable to alternately knit one torque yarn and one Z torque, but it is not necessary to alternately knit a double covering yarn without torque.

The knitting machine may be knitted by using an ordinary two-port knitting machine or a four-port knitting machine. When knitting, it is preferable to adjust the knitting tension or the loop forming function of the knitting needle so that the stitch loop becomes uniform. Further, FIG. 4 shows a welt portion, a leg portion, and a toe portion corresponding to a panty portion before sewing, but in knitting of a stocking, it is usual to use a raw yarn according to each required performance. .

Further, in the case of the present covering stocking, the polyurethane elastic yarn used in the panty portion is a polyurethane elastic yarn spun by a usual dry spinning method, wet spinning method or melt spinning method and having a heat set rate of 60% or less. Can be used. Further, the fineness is desirably the same fineness as that of the leg portion, or a range of 8d to 50d, which is thicker than that.

In the covering yarn for the panty portion, a nylon filament yarn such as a nylon flat yarn or a nylon false twisted yarn of usually 10d to 50d is wound around the polyurethane elastic yarn in a single or multiple layers. Then, S-twisted yarn and Z-twisted yarn are alternately knitted by a usual two- or four-ported circular knitting machine so that the fabric does not have obliqueness. The panty portion may be knitted by alternately arranging the panty portion covering yarn and another nylon filament yarn or a covering yarn.

Knitted stockings are usually 60 to
The stockings are shrink-treated with steam at 100 ° C. Next, after sewn the tip of the nail, the welts of the two knitted fabrics are sewn to finish the panty, and then, processing such as dyeing or softening is performed. In addition, insert the stockings sewn up to the panties into two plate-shaped lasts of appropriate size,
Heat set with steam. Another method is to sew, dye, or soften the tip of the tab, heat-set them one by one into a plate-shaped last, and make the welts of the two heat-set knitted fabrics into panties. There is a sewing method. The temperature at the time of such heat setting is optimally 100 to 130 ° C.
If the heat setting temperature is 100 ° C. or lower, the heat setting effect cannot be obtained, and if it is 130 ° C. or higher, there is a drawback that the stocking has a hard texture.

After the heat setting step is completed, the stockings are cooled and removed from the plate-shaped last. Here, in the case of a covering stocking using a polyurethane elastic yarn having a small heat setting rate, the stocking is greatly shrunk at the time of setting the last, resulting in a stocking having a small placement dimension.

[0047]

【Example】

Example 1 A polyurethane elastomer having an A hardness of 85 composed of hexamethylene glycol, 4,4'-diphenylmethane diisocyanate (hereinafter MDI) and 1,4-butanediol (hereinafter 1,4-BG) was melted at 230 ° C. After spinning from a spinning head of 3 mmφ, the traverse width is 6.5 cm after cooling,
Using a winder with a distance of 70 cm between the delivery roller and the traverse, wind at 500 m / min.
A 0 denier monofilament was obtained. The heat setting rate measured after leaving the polyurethane elastic yarn for one week is 95%,
The heat resistance temperature was 105 ° C.

Next, using the covering machine shown in FIG. 1, an optical wire diameter measuring device is installed at the position of the twisting guide (8), and a total draft of the covering (first draft × second draft) is prepared. At 2.4, the first-stage draft ratio and the second-stage draft ratio were changed to the conditions shown in Table 1, and the fineness variation width was measured. Next, the hollow spindle is 20,000 rpm, the number of twists is 1500 T / M, and the covered yarn is 10d / 5f.
Six types of single covering yarns A to F corresponding to the draft distribution in Table 1 were obtained with the nylon filaments of Table 1.

Next, Super 4 knitting machine Super 4 manufactured by Nagata Seiki
-Single covering yarn with 20d polyurethane elastic yarn covering 40d nylon false twist yarn in the welt portion, and the above-mentioned six types of single covering yarn alternately S-twisted and Z-twisted in the leg portion. To place
The covering stocking was knitted.

On the other hand, a 13d / 5f nylon yarn is covered with a commercially available 20d dry-spun polyurethane elastic yarn (heat set rate 58%) 3.3 times the total draft of the covering, the first draft 1.8, and the number of twists 1800T. Under the conditions of / M, a covering yarn for cross knitting stocking was obtained. The fineness variation rate of the polyurethane elastic yarn measured in the covering step was 22.0%. Using the covering yarn and the 13d / 3f nylon yarn, the covering yarn and the nylon filament were knitted into a cross knitting stocking by the same knitting machine as the above-described knitting machine. (G)

The above six types of covering yarn stockings and one type of mixed knitting stockings were sewn and dyed according to a conventional method, and then the welt width was 18 cm and the leg top width was 18 c.
m, a toe width of 9 cm and a total length of 95 cm were inserted into an aluminum plate, heat-set with saturated steam at 115 ° C. for 15 seconds, removed from the foot-shaped aluminum plate after cooling, and the dimensions and the appearance of the knitted fabric were evaluated. In order to evaluate the wearability, a wear test was performed on 10 women. The results were as shown in the table below.

[0052]

[Table 1]

As shown in Table 1, covering stockings A to 95 using a polyurethane elastic yarn having a heat setting rate of 95%.
In the case of F, the L length storage dimensions were almost the same as the L knitting stockings, and the wearability evaluation results of the ten women were all "Ease of wearing same as the Knitting stockings". Was.

However, the mixed knitting stocking G was finished with a large stocking L length, and weaving caused by the knitting was recognized. On the other hand, in the stockings A and F having a large variation in the fineness of the polyurethane elastic yarn, in the evaluation of the stocking appearance, course unevenness or periodic unevenness in the well direction was slightly observed.

Example 2 Polyhexamethylene adipate, MDI and 1,4-BG
Was melt-spun. At that time, 2 moles of MDI was reacted with polycaprolactone glycol having a molecular weight of 850, and an isocyanate group compound (I) having a terminal NCO content of 6.2% by weight was added as a crosslinking agent to the molten polyurethane elastic material at a weight ratio of 5%.
%, 8%, 12%, and 15%. 1 of the cross-linking material
The theoretical value of the isocyanate group in the molecule is two, and the NCO addition amount of each is 0.31%, 0.50%, 0.74%,
0.93%.

Then, the mixture was spun from a nozzle having a diameter of 0.3 mm and wound in the same manner as in Example 1 to obtain a polyurethane elastic yarn having a circular cross section of 10 d / 1 f. (I, J, K, L)
No isocyanate compound is added at the same time.
A polyurethane elastic yarn of 0d / 1f was also obtained. (H)

Next, the wound five kinds of polyurethane elastic yarns are rotated by a surface drive method, stretched 2.0 times and unwound from the package, and then relaxed and shrunk 0.55 times to obtain a traverse width of 5 cm. Was wound up on a paper tube by a winder (5) to obtain five types of polyurethane elastic yarns having extremely low sticking degree. A commercially available dry spinning polyurethane elastic yarn (10d) was also wound into a paper tube under the same conditions. (M)

Then, using a double covering machine equipped with two hollow spindles, the first-stage drafts 1.3, 2
Under the conditions of the first draft 1.8, the lower number of twists 2400 T / M, and the upper number of twists 1920 T / M, a 7d / 5f nylon yarn is double-wrapped and a double covering yarn 6 having no torque.
Got the kind.

The fineness variation width of the polyurethane elastic yarn was set to the same draft distribution as that of the covering machine using the apparatus shown in FIG. 3, and the fineness measurement sensor was measured using a capacitance type measurement sensor. Next, the knitting was made into a covering stocking in the same manner as in Example 1, and processed in the same process as in Example 1 to obtain six types of covering stockings H to M made of double covering yarn. The resulting stockings were evaluated in the same manner as in Example 1 to evaluate the appearance of the stockings and to evaluate the wearing of 10 women. The results were as shown in Table 2.

[0060]

[Table 2]

As shown in Table 2, the stockings H to K according to the present invention were large covering lengths, had no defects in the knitted fabric appearance, and were excellent in wearability and fit. FIG. 5 shows a photograph of the knitted surface of Stocking I. However, each of the stockings L and M has a remarkably small placement size after the set of the last, and as a result, it is difficult to wear it, and in some cases, it breaks when worn.

Example 3 A thermoplastic polyurethane elastic body (I) of hexamethylene glycol, MDI and 1,4-butanediol having an A hardness of 90 was obtained. On the other hand, 0.5 mol of butanol was reacted with the cross-linking agent (I) of Example 2 at room temperature as a cross-linking agent, and a compound in which one part of both terminal isocyanate groups was blocked with butanol and the NCO weight% was 4.7 weight%. (II) was obtained.

Next, the polyurethane elastic body (I) was melt-spun. At this time, the crosslinking agent (I) was added in an amount of 0% by weight, 8% by weight, 15% by weight,
0% by weight was added and mixed, and then extruded through a 0.3 mmφ nozzle to obtain four types of polyurethane elastic yarns M, P, Q, and R each having a circular cross-sectional shape of 20 d / 1 f. On the other hand, 5% by weight and 15% by weight of the crosslinking agent (II) were added to the molten polyurethane elastic body (I) by the same method, and the mixture was mixed.
And two types of polyurethane elastic yarns N and O were obtained.

The above-mentioned polyurethane elastic yarn and a commercially available dry-spun polyurethane elastic yarn 20d were prepared under the conditions of a covering draft of 2.4 and a twist number of 1500 T / M.
According to the method of No. 57391, seven types of single covering yarns for leg portions were obtained by winding nylon filament yarns 10d / 5f in the S-twist and Z-twist directions, respectively.

As the covering yarn for the panty section, 30% of the commercially available 20d dry-spun polyurethane elastic yarn is used.
A single covering yarn obtained by winding a d / 10f nylon false twisted yarn in the S twist direction and the Z twist direction under the conditions of a covering draft of 3.0 and a twist number of 600 T / M was obtained. In addition,
The heat setting rate of such a commercially available polyurethane elastic yarn is 36%.
Met.

Next, Nagata Seiki's 4-neck knitting machine Super 4-
II, using a 140d dry-spun polyurethane elastic yarn in the waistband portion, the S-twist yarn and the Z-twist yarn of the covering yarn for the panty portion are alternately arranged in the panty portion, and the polyurethane elastic yarns A to A in the leg portion. The S-twisted yarn and the Z-twisted yarn of the covering yarn of F were alternately arranged, and a covering stocking was knitted on the toe portion using a nylon filament yarn 40d / 10f.

Then, the toe portion and the panty portion are sewn and dyed according to a conventional method, and the welt portion width 18c is formed.
m, leg top width 18cm, toe width 9cm, total length 1
Insert into a 10cm aluminum plate and steam with 115 ℃
After cooling for 2 seconds, it was removed from the aluminum plate after cooling, and the product placement dimensions and knitted fabric appearance were evaluated. In addition, a wearing test was performed on 10 women to evaluate the feeling of wearing. The evaluation results were as follows. Each stocking number corresponds to the number of the polyurethane elastic yarn.

[0068]

[Table 3]

As shown in Table 3, all of the stockings of the present invention had a long leg portion and a short panty portion, and had good appearance evaluation and good feeling of wearing by 10 women. . However, in the case of the stockings ( Q, R, S) other than the present invention, unevenness of the course is conspicuous in the legs, and the placement size of the panties becomes abnormally long. As a result, the fit of the panties in the vertical direction when worn is reduced. In short, there were many requests from wearers to improve the fit of the panties.

Example 4 The covering yarn of the polyurethane elastic yarn N of Example 3 was used as a leg portion, and the polyurethane elastic yarns O, P, and
Q, R and commercially available 20d dry-spun polyurethane elastic yarn S
Covering draft 3.3 times, twist number 600
Using a 30d / 10f nylon false twist yarn and five types of covered single covering yarns each in a panty section under the conditions of times / m, the knitting was made into a covering stocking under the same conditions as in Example 3; Heat set under the same conditions and 5 types of pantyhose O ',
P ', Q', R ', S' were obtained.

Table 4 shows the results of evaluating the dimensions of the finished pantyhose, the appearance, and the evaluation of wearing the stockings.

[0072]

[Table 4]

Example 5 Polybutylene adipate glycol, MDI and 1,4-
It was melt-spun with a thermoplastic polyurethane elastomer of A hardness 85 made of butanediol. At that time, 8% by weight of the crosslinking agent (III) of Example 1 was added and mixed to obtain a heat setting ratio of 88%.
5d polyurethane elastic yarn was obtained. Then, covering draft 2.5, lower twist number 2400 T / M, upper twist number 192
Under the conditions of 0 T / M, a double covering yarn obtained by doubly winding a 7d / 5f nylon filament yarn was obtained.

Next, the double covering yarn was used for the leg portion, and the panty portion was used only for the covering yarn used in the panty portion of Example 3, and the covering yarn was combined with the covering yarn at 30d / 1.
Two kinds of pantyhose (T) and (V) in which one nylon false twisted yarn was alternately arranged were knitted.
Then, after performing sewing and dyeing according to the usual method,
Heat setting was performed under the same conditions as the mold setting conditions in Example 3, and the panty portion (T) in which the panty portion was composed only of the covering yarn and the covering stocking in which the panty portion was composed of the knitting of the covering yarn and the nylon false twist yarn. (V) was obtained. The leg placement dimensions and panty placement dimensions of both covering stockings are 75
In all cases, the stockings were cm, 19 cm, 76 cm, and 24 cm.

As a result of wearing by ten women, both legs and panties had good fit.

[0076]

The covering stocking according to the present invention is a uniform stocking with no appearance unevenness or periodic unevenness in the well direction, and has a beautiful appearance. In addition, the stocking after the set of the last is large, so that it is easy to wear like conventional knitted stockings, and has excellent fit.

The stocking according to the second aspect is a covering stocking in which the placement of the leg portion and the placement of the panty are well balanced, and can be easily worn as in the case of the ordinary knitting pantyhose.

[Brief description of the drawings]

FIG. 1 is a side view illustrating an example of a covering machine.

FIG. 2 is a knitted surface photograph of a conventional mixed knitting stocking, showing the shape of a fiber.

FIG. 3 is a side view of a fineness variation width measuring device of a polyurethane elastic yarn.

FIG. 4 is a side view of the stocking of the present invention.

FIG. 5 is a knitted surface photograph of the covering stocking according to the present invention, showing the shape of the fiber.

Continuation of the front page (51) Int.Cl. ⁶ Identification code FI D04B 1/18 D04B 1/18 1/26 1/26 Joint panel Referee Yukie Sato Referee Takuko Funakoshi Referee Ayako Nishimura (56) References Special JP-A-3-146702 (JP, A) JP-A-3-244480 (JP, A) JP-A-3-204314 (JP, A) JP-A-47-28115 (JP, U) JP-B-60-44405 (JP, U) JP, B2) Tokiko Sho 60-44406 (JP, B2) Nikkei Business April 29, 1991, pages 53-55 Nippon Textile Newspaper November 19, 1985, second page, 50%-Development of Nisshinbo's Mobilon ”Senken Shimbun, June 8, 1990, page 2,“ Teijin-Palest Steady Expansion ”,“ Distribution Service Newspaper, March 5, 1991, Page 7, “Strong Support, Touching Yaraka” “Synthetic Rubber-New Edition-” by Kenji Tatebayashi, published by Nikkan Kogyo Shimbun (published on July 30, 1966), page 163 (Table 2. 84) Hon Textile Newspaper, January 31, 1991, morning edition, No. 5, "Development of Teijin Silnade", 25% increase in strength "The Legwear, April 1991, pp. 48-50," Activators of the Support Market ""Zokki type rapidly emerges" section "Surely eyes" November-December 1989, No. 53, pp. 14-17, “Support Type Pantyhose”

Claims (2)

(57) [Claims] 1. A melt-spun material having a JIS A hardness of 83 to
93, a polyurethane elastic yarn having a heat setting rate of 70% or more is used as a core yarn, and at least a leg portion is knitted using only a covering yarn obtained by winding a nylon filament yarn on the core yarn, and a polyurethane having a heat setting rate of 60% or less is used. Elastic yarn
Use covering yarn wound with Ilon filament yarn
Covering stockings with woven and knitted panties . 2. The method of claim 1, wherein the polyurethane elastic yarn is melt spun.
Distance L ₀ between the winding traverse from berries roller and preparative
The ratio (L ₁ / L ₀ ) of the rubber width L ₁ is 15 × 10 ^-2 or less
JIS A hardness 83-93
A polyurethane elastic yarn having a cut rate of 70% or more is used as a core yarn,
Coverlin with nylon filament yarn wound around it
Knitting at least the leg part with only yarn, heat setting rate
Is 60% or less of polyurethane elastic yarn with nylon filament
Panty part using a covering thread wound with
Covering stockings characterized by knitting
Manufacturing method.