JP2014094112A - Stocking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin stocking having a rubber touch feeling reduced while using a naked thread of a polyurethane elastic yarn as an insertion yarn so as to cause a strong wear pressure to appear.SOLUTION: A stocking uses, as a ground yarn, a woven structure which is prepared by inserting a naked thread of a polyurethane elastic yarn 170 having a stronger elastic force than that of the core yarn of a double covering yarn 160, into the stitch which has been prepared by zokki-weaving that double covering yarn 160. Not only the upper twisted yarn but also the lower twisted yarn of the double covering yarn 160 have a small twisted number per unit length, and the naked yarn on the skin side (or the back side of a raw fabric) is covered with a nylon yarn 164 and a nylon yarn 166 which are twisted double covering yarn 160.

Description

  The present invention relates to a stocking, and more particularly, to a stocking that enhances ease of wearing and comfort while maintaining the necessary pressure as a stocking suitable for treating varicose veins and the like. The stockings referred to in the present invention refer to clothing that covers the lower body of pantyhose, long stockings up to the inseam, stockings represented by short stockings under the knee, and tights. The stockings according to the present invention may be particularly preferably used for medical purposes.

  For diseases such as lymphedema of the lower limbs and venous return disorder (varicose veins), wear medical stockings that express suitable pressure (about 10 to 46 mmHg (about 13 hPa to 62 hPa)) and respond to each part of the leg It is known that compression therapy that applies high pressure is effective. In such a medical stocking, a so-called covering yarn in which a polyurethane elastic yarn is used as a core yarn and a non-elastic yarn such as polyamide is wound as a cocoon around the knitting yarn constituting the leg portion is used for the ankle. While applying the greatest pressure, the pressure is gradually reduced from the ankle to the lower leg and thigh (with a difference in pressure applied) to provide the pressure necessary for treatment.

  Japanese Patent Laid-Open No. 11-43805 (Patent Document 1) discloses a pantyhose using the above-described covering yarn. The pantyhose disclosed in this publication is a pantyhose using a covering elastic yarn in which a polyurethane elastic yarn is used as a core yarn and a non-elastic yarn is wound around the polyurethane elastic yarn. There are two or more different knitted parts in the same course that are sandwiched between 1 to 40 course parts knitted with the same stitch length. It is characterized by that.

  In this publication, as Examples 1 to 6, a 40-denier polyurethane elastic yarn as a core yarn is stretched 3.2 times, while an 8-denier, 4-filament nylon yarn has a lower twist number of 2100 T / m and an upper twist. There is disclosed a pantyhose in which legs are knitted into a tentacle structure using a double covering yarn (DCY) that is doubly covered at several 1700 T / m. Further, as Examples 7 to 9, while a 70-denier polyurethane elastic yarn as a core yarn was stretched 3.9 times, a 14-denier, 5-filament nylon yarn had a lower twist number of 2000 T / m and an upper twist number of 1700 T / There is disclosed a pantyhose in which legs are knitted into a tense tissue using a double covering yarn (DCY) that is covered twice with m.

JP 11-43805 (paragraphs 0047 and 0049)

However, the upper twist number and the lower twist number of the covering yarn (DCY) used in the pantyhose disclosed in Patent Document 1 are generally 1700 T / m to 2100 T / m. In the case of such a twist number, the non-elastic yarn (nylon) which is the kite yarn of the covering yarn is tightly tightened, the non-elastic yarn becomes hard, and the touch is not preferable.
In particular, in such a knitting structure of a medical stocking, a bare yarn of polyurethane elastic yarn is used for knitting a stitch using a covering yarn as a ground yarn to develop a strong pressure even in a thin knitted fabric. There is a knitting structure in which (bare yarn) is inserted as an insertion yarn into a stitch. In the case of such a knitted structure, a rubber elastic feeling is expressed when the bare yarn of polyurethane elastic yarn directly touches the skin, slipping is difficult to wear, the touch is bad, the heat is hard, and the texture becomes hard. Can not be satisfied with the feeling of wearing.

The present invention has been developed in view of such problems, and provides a stocking that is easy to wear and comfortable to wear while maintaining the necessary pressure as a stocking for treating varicose veins and the like. The purpose is that.

In order to achieve the above object, the stocking according to the present invention employs the following technical means.
That is, the stocking according to the present invention is a stocking in which at least a leg portion is formed by an elastic knitted fabric knitted using a ground yarn and an insertion yarn, and the ground yarn is a core of a urethane elastic yarn. A covering yarn in which a non-elastic yarn is wound around a yarn, wherein the insertion yarn is a urethane elastic bare yarn having an elastic force stronger than a core yarn of the urethane elastic yarn, Inserted into stitches knitted with ground yarn, on the skin side, the insertion yarn has a portion covered with the kite yarn, and in the covering yarn, the unit length of the kite yarn wound around the core yarn The number of twists per unit is 1000 T / m or less. That is, in the covering yarn, at least a part of the twisted yarn per unit length of the kite yarn wound around the core yarn is 1000 T / m or less. As described above, there is a portion that is effectively coated so as to reduce the rubber touch feeling due to the bare yarn of the urethane-based elastic yarn by the loosely wound kite yarn with a small number of twists.

Preferably, the inelastic yarn that is the kite yarn can be configured to be a multifilament of 12 filaments or more.
More preferably, the covering yarn is a double covering yarn, and is configured such that the number of twists per unit length of the upper twisted yarn wound around the urethane-based elastic yarn is 1000 T / m or less. can do.

More preferably, the number of twists per unit length of the lower twisted kite wound around the urethane-based elastic yarn may be 2000 T / m or less.
More preferably, it can be configured such that the number of twists per unit length of the upper twisted kite is 120 to 400 T / m.

  According to the present invention, it is possible to enhance the ease of wearing and the comfort while maintaining the wearing pressure necessary as a stocking for treating varicose veins and the like.

It is a schematic side view of the stocking which concerns on embodiment of this invention. It is a figure for demonstrating the covering yarn which knits the stockings of FIG. It is a drawing substitute photograph which shows the knitting structure | tissue on the skin side at the time of wearing of the stockings of FIG. It is a figure which shows typically the structure of the knitting structure | tissue on the skin side at the time of wearing of the stockings of FIG. It is a drawing substitute photograph which shows the knitting structure by the side of the skin at the time of wearing of stockings which are conventional examples. It is a figure which shows typically the structure of the knitting structure | tissue on the skin side at the time of wearing of the stockings of FIG. FIG. 6 is a diagram (No. 1) showing measurement results of static friction coefficients of the stocking of FIG. 3 and the stocking of FIG. 5. FIG. 6 is a diagram (part 2) illustrating measurement results of the static friction coefficient of the stocking of FIG. 3 and the stocking of FIG. 5. It is a figure (the 1) which shows the result of sensory evaluation. It is a figure (the 2) which shows the result of sensory evaluation.

Hereinafter, as an embodiment of the present invention, a medical short stocking 100 (hereinafter simply referred to as a stocking 100) which is an example of a stocking will be described in detail with reference to the drawings. The present invention is not limited to such medical use, but is particularly suitable for medical use. Further, the present invention is suitably applied from the ankle portion 130 to the front of the foot mouth portion 150 of the stocking 100. The draft rate is an expansion ratio (of the urethane elastic yarn) when the covering yarn is manufactured. Further, T / m is the number of turns (Turn number) per 1 m (unit length) of the kite yarn in the case of manufacturing the covering yarn.

[Overall configuration of stockings]
An overall configuration of stocking 100 according to the present embodiment will be described. In FIG. 1, the schematic side view of this stocking 100 is shown. The stocking 100 is a knee-length stocking 100 that covers the toe portion 110, the heel portion 120, the ankle portion 130, and the calf portion 140 to the foot mouth portion 150 slightly below the knee portion K. This stocking 100 is provided with a left-right identical shape using a pair of knitted fabrics knitted in a cylindrical shape, and a toe portion 110 of a foot is manufactured by sewing it into a bag shape by a known means.

In the present invention, although the object is a stocking, including a pantyhose or the like partially provided with the function, including tights using a thick knitted fabric, including an open toe type without a toe portion In addition, it is as described in the above technical field to include clothing (whether for men or women) covering the other lower body.
Furthermore, by forming a stocking 100 by knitting a knitting structure using a knitting yarn, which will be described in detail later, it is possible to develop a pressure suitable for medical use. In particular, the stocking 100 is more suitable for treating varicose veins than for treating lymphedema. The pressure at the ankle in the stocking 100 is lower than the pressure 34-46 mmHg (46-62 hPa) suitable for the treatment of lymphedema, and the pressure 20-30 mmHg (26-26) suitable for the treatment of varicose veins. 40 hPa) is different from conventional medical stockings.

[Configuration of knitting yarn and knitted fabric]
The stocking 100 according to the present embodiment is stronger than the core yarn of the double covering yarn 160 that is the ground yarn, in the stretch knitted fabric knitted by zokk knitting using the double covering yarn 160 shown in FIG. 2 as the ground yarn. It is composed of a knitted fabric knitted by inserting a urethane-based elastic yarn having elasticity as an insertion yarn and inserting it into a stitch knitted from the ground yarn.

  As shown in FIG. 2, the double covering yarn 160 includes a polyurethane elastic yarn 162, which is an example of a urethane-based elastic yarn, and a nylon yarn, which is an example of an inelastic yarn, whose winding direction is the reverse direction (S twist and Z It is wound twice so as to be twisted. The nylon yarn that is a kite yarn is composed of a nylon yarn 164 that is a twisted kite yarn and a nylon yarn 166 that is an upper twisted kite yarn. In this case, as will be described in detail later, the number of twists per unit length of a nylon yarn, which is an example of an inelastic yarn, is smaller (than that of a normal covering yarn). The covering yarn in the present invention may be SCY (Single Covered Yarn) instead of DCY. Also in this case, the number of twists per unit length of a nylon yarn, which is an example of an inelastic yarn, is smaller (than that of a normal covering yarn).

  As an example, the polyurethane elastic yarn used as the insertion yarn is preferably a polyurethane elastic yarn. This polyurethane elastic yarn 170 (see FIG. 3 and FIG. 4) is a bare yarn (bare yarn) and has a stronger elastic force than the polyurethane elastic yarn 162 that is the core yarn of the double covering yarn 160. (Or together with the polyurethane elastic thread 162) contributes to applying desired wearing pressure to each part of the lower limb of the user wearing the stocking 100.

Thus, by using a bare thread for the stocking 100, unlike the thick socks in the stocking 100, a thin stocking feeling is realized, but a strong pressure necessary for treatment can be realized.
In addition, as will be described later, the knitted fabric of the stocking 100 according to the present invention is a knitted fabric in which a bare yarn of urethane-based elastic yarn is knitted as an insertion yarn in a stitch knitted with a covering yarn having a small number of twists as a ground yarn. The knitted fabric knitted with the ground yarn can be suitably used as a knitted fabric such as a flat knitted fabric, a rubber knitted fabric, a pearl knitted fabric, etc. Knitting, floating knitting, pile knitting, and lace knitting can be used. Hereinafter, the knitted fabric knitted with the ground yarn will be described as a flat knitted fabric.

FIG. 3 shows a photograph of the knitting structure in a state where the stitches of the stocking 100 are stretched so that the loops are arranged in a line in the course direction, and FIG. 4 shows a schematic diagram of the knitting structure. In the ankle part 130 to the foot mouth part 150 of the stocking 100 according to the present embodiment, a polyurethane elastic thread 170 is formed into a flat knitted stitch knitted as shown in FIG. 3 using the double covering thread 160 shown in FIG. A knitted structure knitted as an insertion yarn is applied.

  In the schematic diagram of FIG. 4 (and FIG. 6 described later), the polyurethane elastic yarn 162 that is the core yarn of the double covering yarn 160 (the double covering yarn 260 in FIG. 6) is also nylon that is the warp yarn of the double covering yarn 160. Both the yarn 164 and the nylon yarn 166 and the polyurethane elastic yarn 170 (polyurethane elastic yarn 270 in FIG. 6), which is an insertion yarn, are described as monofilaments in order to avoid obscuring the figure. As will be described later, the nylon thread 164 and the nylon thread 166 are preferably multifilaments of 12 filaments or more. The polyurethane elastic yarn 162 and the polyurethane elastic yarn 170 may be monofilaments or multifilaments.

  3 (and FIG. 5 described later) is an enlarged photograph of the knitted structure in which the stitches of the stocking 100 are stretched so that the loops are aligned in a line in the course direction, and FIG. 4 (and FIG. 6 described later). Fig. 4 is an ideal diagram schematically showing the knitting structure in that state. For this reason, FIG. 4 (and FIG. 6) are described only ideally (schematically and symmetrically), and the polyurethane elastic yarn 162 and the inelastic yarn constituting the double covering yarn 160 in the flat knitted loop are shown. The nylon yarn 164 and the nylon yarn 166 are different from the actual one (FIGS. 3 and 5) in the state of the polyurethane elastic yarn 170 as the insertion yarn (for example, the insertion position of the polyurethane elastic yarn 170 at the stitch). Yes. Moreover, these FIGS. 3-6 is a figure which shows the skin side (inner side) at the time of wear.

  As shown in FIGS. 3 and 4, the characteristic structure of the knitting structure of the stocking 100 is that a double covering yarn 160 is used as the ground yarn, and the double covering yarn 160 is alternately used to perform knitting and plain knitting. And a bare polyurethane polyurethane yarn 170 having an elastic force stronger than that of the core yarn of the double covering yarn 160 is inserted as an insertion yarn into the flat knitting stitch, and in particular, the double covering yarn 160 The upper twisted and lower twisted yarns are characterized in that the number of twists is small (the number of twists per unit length of the nylon yarn 164 and the nylon yarn 166 as the yarns is small). More specifically, the number of twists per unit length of the lower twisted nylon yarn 164 is 2000 T / m or less, and the number of twists per unit length of the upper twisted nylon yarn 166 is 1000 T / m or less. More preferably, the number of twists per unit length of the nylon yarn 164 of the lower twist is 600 T / m or less, and the number of twists per unit length of the nylon yarn 166 of the upper twist is 400 T / m or less. The number of twists is smaller than the number of twists in a general stocking and / or a covering yarn used in such a stocking particularly suitable for medical use, and the covering used in the medical stocking disclosed in Patent Document 1 is used. Less than the number of twists in the yarn.

As described above, the covering yarn in the present invention is not DCY but SCY (Single
Covered Yarn), including this case, the number of twists per unit length of nylon yarn, which is an example of inelastic yarn, is preferably 1000 T / m or less.
The draft rate of the covering yarn is approximately the same as the draft rate of the normal covering yarn used for such stockings (for example, about 2.0 to 4.0).

Zokki knitting is a type of support yarn (the same nylon yarn is wound on the same polyurethane yarn in the same manner (with the same draft rate and the same number of turns per unit length)). Knitting with only covering yarn).
[Detailed structure of knitting yarn]
In the following, the urethane elastic yarn (polyurethane elastic yarn 162) and the non-elastic yarn (nylon yarn 164, nylon yarn 166) constituting the double covering yarn 160 as the ground yarn, and the urethane elastic yarn as the insertion yarn are bare. The yarn (polyurethane elastic yarn 170) will be described in detail.

The urethane elastic yarn constituting the core yarn of the double covering yarn 160 is not particularly limited as long as it can express a desired pressure feeling (with or without the polyurethane elastic yarn 170). Polyurethane elastic yarn 162 is preferable from the viewpoints of (form retainability), elongation and durability.
Further, the polyurethane elastic yarn 162 may be an ether type having an ether bond or an ester type having an ester bond. The number of filaments of the polyurethane elastic yarn 162 may be either a monofilament or a multifilament, and the fineness of the polyurethane elastic yarn 162 is not particularly limited (provided that it is within a range that provides optimum power). However, any fineness may be used as long as it is used for ordinary stockings.

The inelastic yarn constituting the kite yarn of the double covering yarn 160 may be any yarn that can be suitably used as the inelastic yarn coated around the polyurethane elastic yarn 162. As such an inelastic yarn, Nylon thread 164 and nylon thread 166 can typically be used.
As will be described in detail later, a double covering yarn 160 having a small number of twists using a polyurethane elastic yarn 162 as the urethane-based elastic yarn of the core yarn and a nylon yarn 164 and a nylon yarn 166 as the non-elastic yarn of the kite yarn. By forming a knitted structure in which a polyurethane elastic yarn 170 of bare yarn is inserted into a knitted knitted fabric, desired stocking pressure is expressed in the stocking 100, and the bare yarn on the skin side (the back side of the fabric) is double covered. Covered with nylon thread 164 and nylon thread 166, which are the cocoon threads of thread 160, the rubber touch feeling is reduced, slippery and easy to wear, comfortable to the touch, not hot, and soft texture can be realized. The non-elastic yarn is not limited to the nylon yarn as long as it is capable of coating the bare yarn on the skin side (the back side of the fabric) and exhibiting such an effect.

  These nylon yarns 164 and nylon yarns 166 are preferably multifilaments (in particular, multifilaments of 12 filaments or more) rather than monofilaments. Further, the fineness of the nylon thread 164 and the nylon thread 166 is not particularly limited as long as it is a fineness normally used for stockings. For example, the nylon yarn 164 and the nylon yarn 166 are preferably 33 dtex 26f (filament). In addition, the preferable fineness of the nylon thread | yarn in DCY is 20-45 dtex, and the preferable number of filaments is 10-40f. Furthermore, the preferable fineness of the nylon yarn in SCY is 40 to 90 dtex, and the preferable number of filaments is 20 to 60 f. From these facts, the single yarn fineness of the nylon yarn is 1.27 dtex of 33 dtex and 26f. In particular, the single yarn fineness of the nylon yarn is preferably 3 dtex or less. By using such a nylon yarn with a fine single yarn fineness as the covering yarn, the bare yarn is easily covered with the nylon yarn 164 and / or the nylon yarn 166 on the skin side when worn, and the effect of reducing the rubber touch feeling Becomes larger.

  Furthermore, in the stocking 100 according to the present embodiment, these nylon yarns 164 and / or nylon yarns 166 use wooly yarns that are bulky. By using such a bulky wooly yarn as the covering yarn, the bare yarn is easily covered with the nylon yarn 164 and / or the nylon yarn 166 on the skin side when worn, and the effect of reducing the rubber touch feeling is achieved. growing.

The bare urethane urethane thread, which is an insertion thread, is not particularly limited as long as it can express a desired feeling of pressure by itself, but heat setability (form retainability), elongation and durability are not limited. From the viewpoint of properties, the polyurethane elastic yarn 170 is preferable.
Further, the polyurethane elastic yarn 170 may be an ether type having an ether bond or an ester type having an ester bond, like the polyurethane elastic yarn 162. The number of filaments of the polyurethane elastic yarn 170 may be either a monofilament or a multifilament, and the fineness of the polyurethane elastic yarn 170 is a range in which the polyurethane elastic yarn 170 alone can express a desired power (tightening force). If it is a thing, it will not specifically limit.

Further, a double covering yarn 160 using such polyurethane elastic yarn 162, nylon yarn 164, and nylon yarn 166 will be described.
As described above, the number of twists of the kite yarn of the double covering yarn 160 (the number of twists per unit length of the nylon yarn) is about 1000 to 2000 T / m, which is smaller than that of a normal double covering yarn. Specifically, the number of twists per unit length of the lower twisted nylon yarn 164 is 2000 T / m or less, and the number of twists per unit length of the upper twisted nylon yarn 166 is 1000 T / m or less. Preferably, the number of twists per unit length of the twisted nylon yarn 164 is 200 to 1000 T / m, more preferably about 300 to 600 T / m, and 400 T / m is used in the examples. Further, the number of twists per unit length of the upper twist nylon thread 166 is preferably about 120 to 400 T / m, and more preferably about 200 to 400 T / m. In the examples, 240 t / m is used. As for the lower limit of the number of twists, the lower twist is 200 T / m, and the upper twist is 120 T / m. The lower twist number may be weak in frictional resistance and inferior in durability. The reason is that there is.

When such a covering yarn is used (in a particularly preferable range), as will be described later, the polyurethane elastic yarn 170 which is an insertion yarn is covered with a nylon yarn which is a cocoon yarn of the covering yarn (particularly the skin side (the back side of the fabric)). In this case, the rubber touch feeling of polyurethane can be reduced.
[Detailed structure and effects of knitted fabric]
The structure and operational effects of a knitted structure in which a bare polyurethane elastic yarn 170 is inserted into a flat knitted fabric knitted with the above-described double covering yarn 160 will be described with reference to FIGS. 3 and 4.

  For comparison, as a conventional example, as a conventional example, the number of twists per unit length of the nylon yarn that is the covering yarn is a normal number of twists (the number of twists per unit length of the lower twisted nylon yarn is 2500 T / The number of twists per unit length of the nylon yarn of about 1 m is about 1400 T / m) and the polyurethane elastic yarn 270 of the bare yarn was inserted into the knitted fabric knitted using the double covering yarn 260 The knitting structure of the stocking is shown in FIGS. 5 corresponds to FIG. 3, and FIG. 6 corresponds to FIG.

  As shown in FIGS. 3 and 4, in the knitted fabric of the stocking 100 according to the present embodiment, the double covering yarn 160 includes a polyurethane elastic yarn 162 that is a core yarn, a nylon yarn 164 that is a cocoon yarn, and a nylon yarn 166. This is not a tightly wound state, but is a state where the nylon yarn 164 and the nylon yarn 166 are loosely wound around the polyurethane elastic yarn 162 as the core yarn because of the small number of twists (the black and white arrows in FIG. 3). The covering thread is wide as shown by That is, the nylon yarn 164 and the nylon yarn 166, which are kite yarns, are not firmly but gently wound around the polyurethane elastic yarn 162, which is the core yarn. This is mainly because the nylon yarn 164 and the nylon yarn 166 are wound around the polyurethane elastic yarn 162 with a small number of twists to form the double covering yarn 160.

  As shown in FIG. 4, on the skin side (the back side of the fabric) of the stocking 100, the multifilament nylon thread 164 and / or the nylon thread 166 gently wound around the core thread in this way is a bare thread. A portion covering the polyurethane elastic yarn 170 is generated. In particular, as shown in the partially enlarged view of FIG. 4, when the bare polyurethane elastic yarn 170 moves within the stitches of the ground yarn and approaches the double covering yarn 160 (the polyurethane elastic yarn 170 is heat-fusible. The nylon yarn 164 and / or the nylon yarn 166 generates a portion covering the bare polyurethane elastic yarn 170. This becomes even more remarkable because the nylon thread 164 and the nylon thread 166 are multifilaments (not shown in the figure) and develop a bulky property.

Thus, in this stocking 100, the number of twists of the covering thread is small, the nylon thread 164 and the nylon thread 166 are multifilaments, and the nylon thread 164 and the nylon thread 166 are processed to be bulky. Due to the synergistic effect of being a wooly yarn, the polyurethane elastic yarn 170 which is a bare yarn is effectively covered with a nylon yarn on the skin side when worn. As a result, the rubber touch feeling of the polyurethane elastic yarn is reduced, the slippery and easy to wear, the touch is good, the heat is not so hot and the soft texture is realized. In the stocking 100, an appropriate pressure (20
˜30 mmHg (26-40 hPa)) is mainly expressed by the bare polyurethane elastic yarn 170.

  On the other hand, in the knitted structure in which the bare polyurethane elastic yarn 270 is inserted into the knitted fabric of the conventional double covering yarn 260 shown in FIGS. 5 and 6, the double covering yarn 260 is a polyurethane elastic yarn that is a core yarn. This is a state in which the nylon yarn, which is a kite yarn, is tightly wound (the width of the covering yarn is narrow as indicated by the black and white arrows in FIG. 5). That is, the nylon yarn as the kite yarn is wound loosely and firmly around the polyurethane elastic yarn as the core yarn. This is because the double covering yarn 260 is formed by winding a nylon yarn around the polyurethane elastic yarn with a normal twist.

  Then, as shown in FIG. 6, on the skin side (fabric back side) of the conventional stocking, the nylon yarn tightly wound around the core yarn covers the bare polyurethane elastic yarn 270 as described above. In other words, the bare polyurethane elastic yarn 270 cannot be efficiently coated. Since the bare polyurethane elastic yarn 170 is not covered with the nylon yarn in this way, the polyurethane elastic yarn bare thread directly touches the skin to express a rubber touch feeling, slipping is difficult and difficult to wear, The touch is poor, the heat is harsh and the texture is hard, and the user is not satisfied with the wearing feeling.

Further, the results of quantitatively (objectively) verifying such ease of wearing will be described. 7 and 8 show the measurement results of the static friction coefficient and the dynamic friction coefficient of the stocking 100 according to the present embodiment shown in FIGS. 3 and 4 and the conventional stocking shown in FIGS. 5 and 6.
In this measurement, the stocking is put on a flat foot, the wearing state is collected with an embroidery frame, and the embroidery frame is placed on the simulated skin so that the back side of the fabric is on the simulated skin (bio skin) side. The friction coefficient was measured by applying a load of 100 g. 7 and 8 differ in the type of simulated skin in order to verify the influence of the friction coefficient due to the difference in the user's skin. A measurement distance of 10 mm was measured at a moving speed of 5 mm / sec. The ambient atmosphere at the time of measurement was an air temperature of 20 ± 2 ° C. and a humidity of 60 ± 4% RH.

  In both FIG. 7 and FIG. 8, it became clear that both the static friction coefficient and the dynamic friction coefficient are smaller in the stocking 100 (example) according to the present embodiment than the conventional stocking (comparative example). From these facts, it was quantitatively clarified that the stocking 100 can reduce the stickiness (rubber touch feeling) peculiar to urethane, the skin is easy to wear, the touch is good, and the wearing feeling is excellent.

  In the stocking 100, the nylon yarn 164 and the nylon yarn 166, which are the cocoon yarns of the double covering yarn 160, are loosely wound around the polyurethane elastic yarn 162 which is the core yarn. While the polyurethane elastic yarn 170 can be covered, in the conventional stockings, the nylon yarn that is the cocoon yarn of the double covering yarn 260 is tightly wound around the polyurethane elastic yarn 162 that is the core yarn. Furthermore, it is considered that the reason is that the surface of the polyurethane elastic yarn 270 of the bare yarn that is the insertion yarn cannot be efficiently coated (it cannot be effectively coated so as to reduce the rubber touch feeling).

Furthermore, the result (subjective evaluation result) of qualitatively (subjectively) verifying such ease of wearing will be described. 9 and 10 show the results of sensory evaluation of the stockings 100 (examples) according to the present embodiment shown in FIGS. 3 and 4 and the conventional stockings (comparative examples) shown in FIGS. 5 and 6. Show.
The sensory evaluation was performed by the wearer with an evaluation value of 2 (very good) and an evaluation value of 1 (ease of wearing, touch (inside), touch (outside), biting (ankle), and ease of removal. Good, evaluation value = 0 (normal), evaluation value = -1 (bad), evaluation value = -2 (very bad). Evaluation values were collected using a questionnaire system. FIG. 9 shows an average value of the relative evaluation values of the examples when the comparative example is a criterion for sensory evaluation (evaluation value = 0 (normal)).

In sensory evaluation, the rater's clothing is uniform (including short-sleeved T-shirts, half-pants, stockings, shoes), including approximately the same number of men and women as evaluators, and chamber chamber of 28 ° C, 50% RH environment. And one sample per day. In addition, for the sensory evaluation, the protocol was set to rest in a chair sitting position (10 minutes), walking at a speed of 5 km (10 minutes), and resting in a chair sitting position (15 minutes).

  In FIG. 10, it became clear that the stockings 100 (examples) according to the present embodiment have higher evaluation values than the conventional stockings (comparative example) for all five items. In particular, it can be seen that the examples are markedly preferable to the comparative examples in terms of ease of peeling and ease of removal. Moreover, it turns out that an Example is more preferable than a comparative example also for the inner side (skin side) touch. From these, it became qualitatively clear that the stocking 100 can reduce the stickiness (rubber touch feeling) peculiar to urethane, the skin is easy to wear and wear, the touch is good, and the wearing feeling is excellent. . This is because of the reason explained in the quantitative evaluation using the static friction coefficient.

  As described above, according to the stocking according to the present embodiment, the covering yarn having a small number of twists per unit length of the nylon yarn, which is a kite yarn, is used as the ground yarn, and the covering yarn is alternately used as the ground yarn. A flat knitted fabric was knitted, and a bare polyurethane polyurethane yarn having an elastic force stronger than the core yarn of the covering yarn was inserted into the flat knitted structure as an insertion yarn. For this reason, the pressure necessary for the treatment is realized mainly by the bare polyurethane elastic yarn, and the nylon yarn gently wound around the core yarn on the skin side of the stocking (the back side of the fabric) is the polyurethane elasticity of the bare yarn. A portion covering the yarn can be generated. In this way, since the bare polyurethane elastic yarn is covered with nylon yarn, the rubber touch feeling of polyurethane is reduced, slippery and easy to wear, comfortable to the touch, not hot, and has a soft texture. Can be realized.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
For example, the moisture permeability and ventilation resistance of the stocking 100 are designed so that it can feel cool and hard to sult according to the domestic climate of high temperature and high humidity, in addition to ease of wearing and touch. Yes. Furthermore, on the premise of Japanese use, the stocking 100 is designed by changing the amount of insertion thread fed in accordance with the wide foot of the Japanese so that the side of the instep does not hurt. Furthermore, in the case of pantyhose type, the stocking 100 is designed with a shorter length and a larger thigh as compared to Western stockings on the premise of Japanese use. Furthermore, in the stocking 100, the nylon yarn, which is a covering yarn, is designed to have a finer fineness, thereby increasing the strength and realizing a durability of about half a year. Further, in the stocking 100, in order to express a desired wearing pressure, the number of insertion threads per unit area is optimally designed by changing the size of the stitches depending on the part and changing the density of the stitches in the course direction. doing.

  INDUSTRIAL APPLICABILITY The present invention is suitable for stockings that maintain ease of wearing and increase ease of wearing and comfort, and is particularly suitable for medical stockings.

DESCRIPTION OF SYMBOLS 100 Stocking 110 Toe part 120 Buttocks part 130 Ankle part 140 Calf part 150 Foot part 160, 260 Double covering thread 162 (Polyelastic thread of the core thread constituting the double covering thread) Polyurethane elastic thread 164 (Lower twist constituting the double covering thread) ) Nylon yarn 166 (Upper twist forming double covering yarn) Nylon yarn 170, 270 Polyurethane elastic yarn (bare yarn as insertion yarn)

Claims (5)

A stocking in which at least a leg portion is formed by an elastic knitted fabric knitted using a ground yarn and an insertion yarn,
The ground yarn is a covering yarn in which a core yarn of urethane-based elastic yarn is wound with a non-elastic yarn thread.
The insertion yarn is a urethane-based elastic yarn bare thread having a stronger elastic force than the core yarn of the urethane-based elastic yarn, and is inserted into a stitch knitted by the ground yarn,
On the skin side, the insertion thread has a portion covered with the kite thread,
In the covering yarn, at least a part of a yarn having a twist number of 1000 T / m or less per unit length of the kite yarn wound around the core yarn is used.   The stocking according to claim 1, wherein the inelastic yarn that is the kite is a multifilament of 12 filaments or more. The covering yarn is a double covering yarn,
The stockings according to claim 1 or 2, wherein the number of twists per unit length of the upper twisted kite wound around the urethane elastic yarn is 1000 T / m or less.   The stocking according to claim 3, wherein the number of twists per unit length of the lower twisted kite wound around the urethane elastic yarn is 2000 T / m or less.   The stocking according to claim 3 or 4, wherein the number of twists per unit length of the upper twisted kite is 120 to 400 T / m.