JP2017020160A - Women's underwear having crotch part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a women's underwear having a crotch part, especially preventing discomfort caused by odor from a secretion such as urine and vaginal discharge, and discomfort caused by skin contact in wearing.SOLUTION: A women's underwear having a crotch part includes a body fabric and a crotch part piece. The women's underwear is characterized such that: the crotch part piece includes a cellulose-based fiber modified so that cellulose molecules have a carboxyl group structure; the crotch part piece including the cellulose-based fiber comprises a knitted fabric having a pile structure; the pile structure forms a half twisted loop; and the crotch part piece is overlapped on a skin side corresponding to the crotch part of the body fabric, and has a joint structure in which at least part of the outer edge of the crotch part piece is sewn or bonded.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a women's underwear having a crotch, and in particular, has a crotch part that prevents unpleasant discomfort due to odor or skin contact due to secretions such as urine and vaginal discharge when worn. It relates to women's underwear.

  In recent years, women's social advancement has progressed, while women's understanding of physiological phenomena and social considerations such as menstruation, pregnancy, childbirth, and breastfeeding are not sufficient enough to consult with others. At present, there are not a few women who have trouble. Under such a social background, there is an increasing need for high-performance women's underwear, and in recent years, especially in daily shorts that can be used everyday, there is an increasing demand for dealing with discomfort due to secretions.

  As a result of a questionnaire survey of women in their 20s and 40s, about 85% of the women answered that they may be worried about “origin”. There is a need to reduce the unpleasant tactile sensation.

  On the other hand, cotton materials, which were generally used as underwear materials, have been reduced in their use due to the development of synthetic fibers and their penetration into the market. Due to the increasing demands for, the trend of a return to preference for cotton materials is once again seen. At the same time, there is a growing trend toward preference for cellulose fiber materials including regenerated cellulose fibers such as rayon because of their high affinity for living bodies and biodegradability.

  Conventionally, the hydrophilic part can be worn everyday and the pad can be attached to and detached from the crotch part of the shorts in the event of an emergency such as menstruation, urinary incontinence, or a large amount of urine. A female shorts comprising a front body that can be detachably mounted on the surface, a back body, and a crotch portion that is positioned between the front body and the back body and that can be detachably mounted on the pad is known. It has been. (See Patent Document 1)

  However, it is only intended to treat the secretions using the pad, and it is necessary to prepare the pad in advance even when bleeding during menstruation, and to attach and detach while worrying about the secretions There is a problem that it is not released from the troublesomeness that is not necessary, and shorts alone cannot deal with urinary incontinence or large amounts of urine, and must have a smell and unpleasant feeling. In addition, when using the pad, there was strong discomfort due to stuffiness, and rash and itching were likely to occur.

  In addition, women's underwear with a crotch structure such as shorts has a crotch structure for the purpose of eliminating itching, eczema, odor and discomfort due to various stains attached to the crotch part by wearing. A knitted fabric having a cover factor of 10 to 30 or a woven fabric having a cover factor of 400 to 1400, wherein at least a part of the crotch portion uses a yarn made of Japanese paper containing hemp or wrinkles. There is known a garment configured and having at least a part of one side of the fabric exposed on the skin side. (See Patent Document 2)

  However, improvement in antibacterial and deodorant performance degradation due to repeated washing is still sought after, and it has hardly been able to cope with treatment when there is a lot of vaginal secretion mucus and unpleasant contact with the skin.

JP 2009-155740 A JP 2011-231411 A

  The present invention relates to a women's underwear having a crotch, and in particular, has a crotch portion that prevents unpleasant discomfort due to odor and skin discomfort based on secretions such as urine and vaginal discharge when worn. The aim is to provide women's underwear.

  In order to achieve the above object, the present invention provides a female underwear having the following crotch portion.

Item 1. A female underwear having a crotch portion comprising a body cloth and a crotch piece, wherein the crotch piece includes a cellulosic fiber in which cellulose molecules are modified to have a carboxyl group structure, and the cellulosic fiber. The crotch piece includes a knitted fabric having a pile structure, and the pile structure forms a semi-twisted loop, and the crotch piece is a skin side of a portion corresponding to the crotch portion of the body fabric A female undergarment having a crotch portion, characterized in that the crotch piece has a joined structure in which at least a part of an outer edge of the crotch piece is sewn or bonded .

Item 2. Substantially the entire surface, feminine undergarment having a crotch portion of claim 1 which comprises said pile structure of the skin side of the knitted fabric.
Item 3. The undergarment for women having a crotch part according to claim 1 or 2 , wherein the cellulose fiber in which cellulose molecules are modified to have a carboxyl group structure is contained in a spun yarn having a pile structure. .

Item 4. The woman having a crotch part according to any one of claims 1 to 3, wherein the knitted fabric having a pile structure has a water vapor transmission rate of 400 g / m ² · h or more according to JIS L 1099 (A-1 method). For underwear.

Item 5. Of the outer edges to be sewn or bonded to the crotch piece, the joining structure is not sewn or bonded at the ridgeline on the inner crotch side at the time of wearing, but the ridgeline on the front side and the back side is sewn or bonded The underwear for women having a crotch portion according to any one of claims 1 to 4, wherein the undergarment has a crotch portion.

Item 6. 6. The pile structure according to claim 3 , wherein the pile structure has a loop pile structure arranged in a plurality of straight lines, and the plurality of straight lines extend in the front-rear direction of the body when worn . Women's underwear having a crotch portion according to any one of the above.

  The underwear for women having a crotch part according to the present invention comprises a knitted fabric in which a crotch piece includes a cellulosic fiber having a COO group in the molecule, and the crotch piece including the cellulosic fiber has a pile structure, The crotch piece is superimposed on the skin side corresponding to the crotch part of the body cloth, and at least a part of the outer edge of the crotch piece is sewn or bonded. This reduces the discomfort due to odor based on secretions such as urine and vaginal discharge, and reduces the discomfort due to skin contact with vaginal secretion mucus.

  Moreover, by having the pile protruded almost on the entire skin side of the crotch piece, the liquid can be retained while reducing the contact of the vaginal secretion mucus with the skin, and comfort can be maintained.

(A) is explanatory drawing which shows an example of the women's underwear which has a crotch part by this invention, (b) is explanatory drawing which shows an example of the crotch piece used for the female underwear which has the crotch part of this invention, (c) ) Is an example (schematic diagram) of a cross-sectional structure of a crotch portion of a female undergarment in the present invention. It is an example of a pile knitting structure, and is a schematic view in which only one yarn protrudes as a pile in a tentacle knitting structure using two yarns. FIG. 4 is a cross-sectional schematic view of a crotch piece (a) and enlarged photographs (b) and (c) taken in the direction of illustration of an example of a pile structure in a crotch piece of a female undergarment having a crotch according to the present invention. It is explanatory drawing which shows pile height about the example of the pile structure in the crotch piece of the underwear for women which has a crotch part by this invention.

  Hereinafter, a female underwear having a crotch portion according to the present invention will be described.

In the undergarment for women having a crotch portion of the present invention, the crotch piece includes a cellulosic fiber having a cellulose molecule modified to a structure having a carboxyl group structure.
Thereby, the odor based on both an acidic malodorous substance and a basic malodorous substance can be reduced.

Generally, vaginal secretions are sweat, sebum, secretions from the Bartholin and Skene glands in the vulva, fluid from the endometrium and fallopian tubes , cervical mucus, detached cells, and secretions from the vaginal wall itself. A mixture of many body fluids, and contains complex alcohols such as pyridine, squalene, urea, acetic acid (ethanoic acid), butyric acid (butanoic acid), cholesterol, glycols, ketones, aldehydes, and the like. In addition, although there are individual differences, as other fatty acids, these short-chain fatty acid components include short-chain fatty acids such as propionic acid (propanoic acid) and isovaleric acid (pentanoic acid), and include the aforementioned acetic acid and butyric acid. It is considered that it is a cause of odors that women care about together with ammonia odor caused by urine etc.

In the present invention, since the cellulosic fiber constituting the crotch piece is modified and has a COO group structure, due to Na (sodium) ions and H (hydrogen) ions that exist in nature, It has the COO base structure of the modified cellulosic fiber in the form of both COONa and COOH. In addition, each time washing is performed, Na caused mainly by the alkaline agent in the detergent is repeatedly supplied, and H that is present in a large amount in water is also repeatedly supplied. The effect of reducing odor based on both offensive odor substances persists even after repeated washing.
The structure of COONa in the modified cellulose molecule contributes to the deodorization of acidic malodorous substances.

The mechanism of action is not clear, but the modified carboxylic acid structure of cellulose is weaker than the main acidic malodorous acid. It is considered that the structure of CH ₃ COOH (odorous substance), which is regarded as a relatively strong acid, compared to the carboxylic acid structure of the refined cellulose is more stable when ion exchange is performed as CH ₃ COONa (odorless).

In addition, the structure of COOH in the modified cellulose molecule contributes to the non-bromination of basic malodorous substances. Although its mechanism of action is not clear, for example, when ammonia (NH ₃ ) is taken as an example, COOH of the modified cellulose captures NH ₃ (bad odor substance) and becomes -COONH ₄ (odorless). Conceivable.

In addition, vaginal fatty acids come from metabolic processes of resident bacteria, and vaginal secretion mucus contains these resident bacteria, that is, lactic acid bacteria, streptococci, staphylococci and the like. These resident bacteria function to suppress the propagation of pathogenic microorganisms. While treating the acidic malodorous substance that is produced, holding these beneficial resident bacteria in the crotch piece also contributes to reducing bad bacteria around the delicate areas of women.
In the undergarment for women having a crotch part of the present invention, the crotch piece is made of a knitted fabric having a pile structure.

  Thereby, secretory mucus from the vagina can be contained and held in the pile structure, and subsequently diffused, and unpleasant contact feeling on the skin surface can be reduced. In addition, the use of the knitted fabric allows the wearer to operate both legs forward, backward, left and right without feeling cramped, and at the same time can maintain an appropriate fit to the delicate part of the woman.

The underwear for women having a crotch part according to the present invention can have a pile in a direction in which the knitted fabric having the pile structure protrudes from the fabric surface on substantially the entire skin side surface of the knitted fabric.

  As a result, secretory mucus from the vagina can be quickly taken into and held in the pile structure and subsequently diffused in the direction of the fabric surface, thereby reducing discomfort on the skin surface. It is thought to be due to the action of separating the skin surface from the liquid surface by the pile structure, which should be called the spacer effect, with liquid diffusion into the crotch piece fabric surface and liquid diffusion into the fiber yarn. .

  The pile structure can be a loop pile. By being a loop pile, the three-dimensional structure of the pile is easily stabilized. The loop pile forms a semi-twisted loop as shown in Fig. 3 and Fig. 4 by the torque of the yarn forming the loop, so that a higher three-dimensional structure can be obtained than an arc-shaped transfer yarn, etc., and the standing state is particularly stable. It is thought that it is easy to do.

  In the present invention, since the crotch piece fabric has a loop pile structure, the removal rate of the oily soil containing squalene by washing is improved as compared with the case where the loop pile structure is not provided.

  Although this mechanism of action is not clear, the pile structure in the present invention has a hydrophilic cellulose fiber surface, and therefore has a more planar structure, and the surface of the fabric is more than the fabric without the loop pile structure. It is presumed that the penetration of the oily soil into the fiber is hindered by the three-dimensional structure formed by the retention based on the three-dimensional structure accompanied by the repulsive force with the oily soil due to the hydrophilic surface.

Since the pile loops have a hydrophilic cellulose structure, the hydrophobic soil contained in the cage is easily held between each pile loop structure by the repulsive force with the hydrophilic fiber surface, and easily washed. It is thought that it can be removed. Hydrophilic soil contained in the cage is absorbed quickly by the hydrophilic fibers, but when washing, the hydrophilic fibers quickly draw water into the interior of the fibers and transfer the hydrophilic soil to the water. It seems that dirt can be easily removed.
Moreover, it is preferable that the modified cellulosic fiber of the present invention is contained as a spun yarn in a fiber structure having a pile structure.

Because it is spun yarn compared to filament yarn, it has a tendency to increase the surface area of the fiber because it has many single fiber ends, and combined with the highly intricate three-dimensional fiber structure called pile structure, it has excellent odor substance reduction. There is an effect.
In addition, there is an advantage that spun yarn by blending with synthetic fibers such as polyester, nylon, and acrylic can be easily used.

  For example, if the polyester is increased by adjusting the mixing ratio of the polyester in the blended yarn containing cellulosic fibers, the three-dimensional structure of the pile can be more easily maintained. Thereby, the above-mentioned spacer effect can be expected more. Also, since the drying time during washing can be reduced, combined with the effect of reducing malodorous substances based on the modified cellulose, the underwear can be dried even in laundry drying environments that are difficult to dry, such as room drying in the rainy season. An unpleasant odor when bad can be reduced. Conversely, if the polyester blending ratio is reduced, more cellulosic fibers have excellent biocompatibility with the skin, so even those who have sensitive skin who may have caused abnormalities in the skin due to synthetic fibers. It becomes easy to adapt.

  In the case where the above-described effect by blending polyester is desired, 5% is preferable as the preferable lower limit of the polyester blend ratio in the mixed yarn containing cellulosic fibers, and 65% is preferable as the preferable upper limit. If it is less than 5%, the mixed effect of polyester cannot be expected, and the cost tends to be wasted. If it is more than 65%, the bad odor reduction effect based on the modified cellulosic fiber cannot be expected, and removal of oily soil by washing tends to be difficult. A more preferred lower limit is 10%, and a more preferred upper limit is 45%.

  In the crotch piece used for the women's underwear of the present invention, the boundary between the pile layer 1p and the ground tissue layer 1g can be confirmed by means such as image analysis of an enlarged photograph of the crotch piece fabric cross section.

  In the ground texture layer 1g, the fiber yarn constituting the ground texture layer has a plurality of intersecting portions with a spread in the plane direction of the crotch piece fabric. On the other hand, in the pile layer 1p, the single pile 1sp is independent in the plane direction of the crotch piece fabric, and is connected to the ground texture layer in units of the single pile 1sp.

  Therefore, in the cross-sectional enlarged photograph of the crotch piece fabric, it is possible to find the boundary line of the image density from the center side in the thickness direction from both surfaces. A dimension obtained by averaging the distances between the boundary line and the vertices of 10 randomly selected single piles can be defined as a pile height hp. Since the pile height may fluctuate depending on the standing state of the pile, when the pile height hp is determined more accurately, the pile standing state is stabilized by steam, and the pre-measurement processing is performed as 100. It is desirable to employ a pretreatment in which a wet heat treatment is performed with a steamer at 3 ° C. for 3 minutes.

  A preferable lower limit of the pile height in the crotch piece is 0.2 mm, and a preferable upper limit is 3 mm. If it is lower than 0.2 mm, the discomfort based on the contact of the vaginal secretion mucus with the skin tends to increase, and the degree of stain removal due to washing tends to decrease, which is not preferable. If it is higher than 3 mm, the standing state of the pile is difficult to be stabilized in the worn state, and on the contrary, discomfort based on contact of the vaginal secretory mucus with the skin may increase. A more preferred lower limit is 0.3 mm, and a more preferred upper limit is 2.5 mm.

  The thread type use of the ground texture layer and the pile layer in the crotch piece may be the same or different. For example, as shown in FIG. 2, the ground texture layer can be constituted by two types of yarn use, and only one of the yarns can be used for the pile layer. By using fiber yarns having higher rigidity than the fiber yarns constituting the pile layer, the stitches can be adjusted so that the stitches do not excessively expand when following the wearer's movement. For this reason, synthetic fiber such as polyester, nylon, and acrylic can be used for the ground tissue layer. Since the above-described synthetic fiber yarn is more hydrophobic than the modified cellulose fiber yarn, it is possible to prevent the viscous secretion from transferring to the body fabric side and to more effectively suppress the liquid leakage.

  The fabric thickness can be measured using, for example, a dial thickness gauge (manufactured by Ozaki Seisakusho). In the present invention, as for the cloth thickness of the crotch piece, the preferable lower limit is 0.9 mm, and the preferable upper limit is 4 mm. If it is thinner than 0.9 mm, the effect of diffusing and holding the vaginal secretion mucus decreases, and liquid leakage tends to occur, which is not preferable. If it is thicker than 4 mm, the crotch part tends to be stuffy and uncomfortable. A particularly preferred lower limit is 1.2 mm, and a particularly preferred upper limit is 3 mm.

  The preferable lower limit of the total thickness of the portion where the body fabric and the crotch piece fabric are overlapped is preferably 1.4 mm and the preferable upper limit is 5 mm. If it is thinner than 1.4 mm, liquid leakage tends to occur, which is not preferable. If it is thicker than 5 mm, the crotch part tends to be stuffy and uncomfortable. A particularly preferred lower limit is 1.6 mm, and a particularly preferred upper limit is 4.5 mm.

In the present invention, the basis weight of the crotch piece fabric is preferably 100 g / m ^{2 at} a preferred lower limit and 300 g / m ² at a preferred upper limit. If it is less than 100 g / m ² , the retention / diffusion performance of the secretory mucus tends to be lowered or the deodorizing effect tends to be insufficient, which is not preferable. If it is greater than 300 g / m ² , the feel per skin becomes hard and it tends to be stuffy, which tends to cause discomfort and is not preferable. A more preferred lower limit is 150 g / m ² .

In the present invention, the moisture permeability of the crotch piece (JIS L 1099 A-1 method) has a preferred lower limit of 400 g / m ² · h. By setting it to 400 g / m ² · h or more, discomfort due to stuffiness can be reduced, drying after washing is quicker, and it is difficult for germs to propagate, and the crotch piece fabric can be kept clean. The lower limit is more preferably 415g ^{/ m} 2 · h, particularly preferably the lower limit is 420g / ^{m 2} · h.

  In the present invention, the crotch piece has a joining structure in which at least a part of the outer edge of the crotch piece is stitched or bonded to the skin side of a portion corresponding to the crotch part of the body cloth.

  The crotch piece can be sewn or adhered to the body cloth by a known method, and can be joined by a sewing means using fiber yarns, or an adhesive means using a hot melt adhesive or other adhesive. About the site | part which performs the said sewing or adhesion | attachment, the perimeter of the outer edge of a crotch piece may be sufficient, and a part of outer edge may be sufficient.

  In particular, the outer edge to be sewn or bonded to the crotch piece is not sewn or bonded to the ridgeline on the inner crotch side when worn, and the ridgeline on the front side and the back side is sewn or bonded. preferable.

  By setting it as the above structures, there exists a tendency for the stain removal effect by washing to become high, and there exists a tendency for a high deodorizing effect to continue. In addition, the sewn or bonded part tends to have poor vaginal secretion mucus retention and spacer effect compared to other parts, so the sewn or bonded part should be minimized to maximize performance. Can also contribute. The crotch piece outer edge that is not sewn or bonded to the body cloth can be appropriately subjected to a known fraying prevention treatment.

  In the present invention, the pile structure of the crotch piece fabric has a loop pile structure arranged in a plurality of straight rows, and the plurality of straight rows has a structure in which the rows extend in the front-rear direction of the body when worn. Can take. Here, the meaning of arranging in a plurality of straight lines indicates that the gaps between the single piles are arranged in parallel as if they were communicating grooves. The parallel groove structures formed by the gaps between the piles extend linearly in the front-rear direction in the worn state, so that vaginal secretion mucus can be efficiently distributed in the front-rear direction. In addition, since the crotch piece is a knitted fabric, the groove structure can be expanded and contracted like a pump by a natural operation compared to a woven fabric, and liquid dispersion in the front-rear direction can be performed more quickly. Moreover, since the liquid can be distributed in the tangential direction of the edge of the leg opening of the female undergarment, it is possible to more effectively prevent the secretion from leaking from the leg opening.

  The preferable lower limit of the left-right direction pitch between the single piles is 0.3 mm, and the preferable upper limit is 2 mm. When it is smaller than 0.3 mm, the diffusion effect of secretory mucus tends to be lowered, which is not preferable. If it exceeds 2 mm, the secretory mucus tends to come into contact with the skin, which is not preferable. A more preferred lower limit is 0.4 mm, and a more preferred upper limit is 1.5 mm. The preferable lower limit of the front-rear direction pitch between the single piles is 0.2 mm, and the preferable upper limit is 1.5 mm. If it is smaller than 0.2 mm, the diffusion effect of secretory mucus tends to decrease, which is not preferable. If it exceeds 1.5 mm, the secretory mucus tends to come into contact with the skin, which is not preferable. A more preferable lower limit is 0.3 mm, and a more preferable upper limit is 1.4 mm. Here, the front-rear direction and the left-right direction are directions shown in FIG.

In the present invention, with respect to the cellulosic fiber used for the crotch piece fabric, a known method can be adopted as a method for forming a cellulosic fiber in which cellulose molecules are modified to have a carboxyl group structure. For example, a method in which a vinyl compound is graft-copolymerized to a cellulose molecule, a method in which a cellulose molecule is carboxyalkylated, a method in which a hydroxyl group in a cellulose molecule is oxidized to a carboxyl group by using a catalyst such as an N-oxyl compound, etc. Can be illustrated. The modification as described above may be performed in the state of cellulosic fiber yarn or raw cotton, and the modification may be performed in the state of spun yarn or processed yarn. Of course, the modification treatment may be performed after the fiber structure such as a woven or knitted fabric is formed. Preferable is a method in which a modification treatment is performed after forming a woven or knitted fabric in that a higher modification effect can be expected.

  The presence or absence of COO groups can be qualitatively confirmed by a known analysis method. The amount of COO groups is determined by converting all COO groups into COOH groups and immersing them in an aqueous sodium hydroxide solution (0.1 N) to convert all COOH groups into COONa groups. After substitution, it can be determined by quantifying Na used for the substitution. The amount of Na used for the substitution can be quantified by titrating a sodium hydroxide aqueous solution (0.1N) in which the crotch piece fabric is dipped using, for example, hydrochloric acid (0.1N).

In the present invention, the moisture absorption rate of the crotch piece fabric has a preferred lower limit of 5% and a preferred upper limit of 20%. If it is lower than 5%, the retention performance of the secretory mucus cannot be exhibited sufficiently, and it tends to be difficult to remove dirt by washing, which is not preferable. If it exceeds 20%, drying after washing takes too much time, and the crotch piece fabric tends to be kept clean, which is not preferable.
In the present invention, the moisture absorption rate of the crotch piece fabric can be obtained by the following formula (1).
Moisture absorption rate (%) = [(official weight) ÷ (absolute dry weight) −1] × 100 (1)

  In the above formula (1), the absolute dry weight is obtained by, for example, putting the crotch piece dough piece into a weighing bottle, drying it at 105 ° C. for 2 hours, weighing it, and subtracting the weight of the weighing bottle weighed in advance. Can be calculated. The official weight is determined by, for example, weighing a crotch piece piece piece that has been measured in a weighing bottle and measuring the absolute dry weight in an atmosphere of temperature 20 ° C. and humidity 65% RH for 24 hours, and subtracting the weight of the weighing bottle. This can be calculated. For measurement of the absolute dry weight and the official weight, for example, a piece of dough having a size of about 10 × 20 cm can be used. Weighing is repeated until the weight becomes constant.

Examples of the present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
Example 1

In the knitting structure of FIG. 2, a knitted fabric having piles on one side of the fabric using a cotton spun yarn 42 count as the white yarn shown in the drawing and a cotton spun yarn 42 count as the black yarn shown in the drawing. Fabric 1A (fabric thickness 1.6 mm, pile height 0.7 mm) was produced. Further, processing to carboxymethylate cotton cellulose molecules (dipping the dough in an aqueous solution of sodium monochloroacetate 175 g / l and sodium hydroxide 175-60 g / l, heating to 60 ° C. and treating for 1 hour After that, it was washed with water to remove unreacted matter) to obtain a knitted fabric 1AT (FIG. 4, moisture permeability (JIS L 1099 A-1 method) 420 g / m ² · h, moisture absorption rate 8.2%). A female of the type shown in FIG. 1 (a) using a knitted fabric 1AT made of modified cotton containing a COO group as a crotch piece, and a knitted fabric 3 made of bare tentacles made of 95% cotton yarn and 5% polyurethane yarn. Shorts were manufactured. At this time, the knitted fabric 1AT is cut in the shape shown in FIG. 1 (b), and the laminated structure shown in FIG. 1 (a) was placed, and the peripheral edge of the knitted fabric 1AT was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.6 mm. In addition, the left-right pitch between the single piles on the pile surface is 0.8 mm, the front-rear pitch is 0.6 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
(Example 2)

In the knitting structure shown in FIG. 2, a modified cotton spun yarn containing COO group 42 is used as the white yarn shown as the white yarn in the drawing, and polyester filament 84 dtex / 48f is used as the black yarn shown as the black yarn in the drawing. 1B (moisture absorption rate 7.0%, moisture permeability (JIS L 1099 A-1 method) 423 g / m ² · h, fabric thickness 1.4 mm, pile height 0.7 mm) was manufactured. A knitted fabric 1B was used as a crotch piece, and the same knitted fabric 3 as in Example 1 was used as a body fabric to produce a female shorts of the type shown in FIG. At this time, the knitted fabric 1B is cut in the shape shown in FIG. 1 (b), and the laminated structure shown in FIG. 1 (c) is arranged so that the pile surface is arranged on the skin side. 1 (a) was placed, and the peripheral edge of the knitted fabric 1B was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.3 mm. Moreover, the horizontal pitch between the single piles of the pile surface is 0.7 mm, the front-rear direction pitch is 0.5 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
(Example 3)

In the knitting structure shown in FIG. 2, a modified cotton spun yarn containing COO group 42 is used as the white yarn shown as the white yarn in the drawing, and polyester filament 84 dtex / 48f is used as the black yarn shown as the black yarn in the drawing. 1C (hygroscopicity 7.1%, moisture permeability (JIS L 1099 A-1 method) 423 g / m ² · h, fabric thickness 1.2 mm, pile height 0.6 mm) was manufactured. A knitted fabric 1C was used as a crotch piece, and the same knitted fabric 3 as in Example 1 was used as a body fabric to produce a shorts for women of the type shown in FIG. At this time, the knitted fabric 1C is cut into the shape shown in FIG. 1 (b), and the laminated structure shown in FIG. 1 (a) was placed, and the peripheral edge of the knitted fabric 1C was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.3 mm. Moreover, the horizontal pitch between the single piles of the pile surface is 0.7 mm, the front-rear direction pitch is 0.5 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
Example 4

In the knitting structure shown in FIG. 2, a mixed spun yarn number 42 consisting of 70% modified COO group-containing cotton and 30% polyester is shown as a white yarn in the drawing, and polyester filament 84 dtex is shown as a black yarn in the drawing. / 48f, a knitted fabric 1D having a pile on one side of the fabric (moisture absorption rate 6.7%, moisture permeability (JIS L 1099 A-1 method) 428 g / m ² · h, fabric thickness 1.5 mm, pile height 0.8 mm, 55% cotton: 45% polyester). A knitted fabric 1D was used as a crotch piece, and the same knitted fabric 3 as in Example 1 was used as a body fabric to produce a short for women of the type shown in FIG. At this time, the knitted fabric 1D is cut in the shape shown in FIG. 1 (b), and the pile structure is shown in FIG. 1 (c) so that the pile surface is arranged on the skin side. 1 (a) was placed, and the peripheral edge of the knitted fabric 1D was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.6 mm. In addition, the horizontal pitch between the single piles on the pile surface is 0.9 mm, the front-rear pitch is 0.7 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
(Comparative Example 1)

In the knitting structure of FIG. 2, a mixed spun yarn # 42 consisting of 70% cotton (unmodified) and 30% polyester is used as the white yarn shown in the drawing, and polyester filament 84 dtex / 48f, knitted fabric 1E having a pile on one side of the fabric (moisture absorption rate 4.9%, moisture permeability (JIS L 1099 A-1 method) 390 g / m ² · h, fabric thickness 1.5 mm, pile height 0.8 mm, 55% cotton: 45% polyester).
A knitted fabric 1E was used as a crotch piece, and the same knitted fabric 3 as in Example 1 was used as a body fabric to produce a short for women of the type shown in FIG. At this time, the knitted fabric 1E is cut in the shape shown in FIG. 1 (b), and the laminated structure shown in FIG. 1 (a) was placed, and the peripheral edge of the knitted fabric 1E was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.6 mm. In addition, the horizontal pitch between the single piles on the pile surface is 0.9 mm, the front-rear pitch is 0.7 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
(Comparative Example 2)

In the knitting structure of FIG. 2, a mixed spun yarn # 42 consisting of 70% cotton (unmodified) and 30% polyester is used as the white yarn shown in the drawing, and polyester filament 84 dtex / Using 48f, a knitted fabric 1F (fabric thickness 1.5 mm, pile height 0.8 mm) having a pile on the entire surface of one side of the fabric was produced. The knitted fabric 1F was subjected to SR processing to obtain a knitted fabric 1FT (moisture permeability (JIS L 1099 A-1 method) 398 g / m ² · h, moisture absorption 5.9%). Here, in SR processing, 1% owf of NK assist NY (manufactured by Nikka Chemical Co., Ltd.) was added to 3% owf of hydrophilic polyester-based SR processing agent (Nicepol PR-99, manufactured by Nikka Chemical Co., Ltd.). After being immersed in the treatment solution, the wafer was drawn using a padder at a drawing rate of 100%, dried at 100 ° C. for 3 minutes, and then heated at 180 ° C. for 30 seconds. Using this knitted fabric 1FT as a crotch piece and using the same knitted fabric 3 as that of Example 1 as a body fabric, a type of women's shorts shown in FIG. 1A was manufactured. At this time, the knitted fabric 1FT is cut into the shape shown in FIG. 1 (b), and the laminated structure shown in FIG. 1 (a) was placed, and the peripheral edge of the knitted fabric 1FT was sewn to the body fabric. At this time, the total thickness of the crotch fabric was 2.6 mm. In addition, the horizontal pitch between the single piles on the pile surface is 0.9 mm, the front-rear pitch is 0.7 mm, and the crotch pieces are arranged and sewn so that the pile structure is arranged in a plurality of linear rows in the front-rear direction. .
(Comparative Example 3)

A knitted fabric 1G (fabric thickness: 1.1 mm) having a milled knitted structure was produced using a cotton (unmodified) 42th yarn. Further, processing to carboxymethylate cotton cellulose molecules (dipping the dough in an aqueous solution of sodium monochloroacetate 175 g / l and sodium hydroxide 175-60 g / l, heating to 60 ° C. and treating for 1 hour After that, it was washed with water to remove unreacted matter) to obtain a knitted fabric 1GT (moisture permeability (JIS L 1099 A-1 method) 430 g / m ² · h, moisture absorption rate 8.2%). A knitted fabric 1GT was used as a crotch piece, and the same knitted fabric 3 as in Example 1 was used as a body fabric to produce a shorts for women of the type shown in FIG. At this time, the knitted fabric 1GT having no pile structure is cut into the shape shown in FIG. 1 (b) and arranged as a crotch back gusset fabric of shorts as shown in FIG. 1 (a). The part was sewn on the body cloth. At this time, the total thickness of the crotch fabric was 2.2 mm.
(Evaluation)

About Examples 1-4 and Comparative Examples 1-3, the stain removal evaluation, the deodorization test, and the wear evaluation were performed as follows. The results are shown in Table 1.
(Soil removal evaluation) Evaluation of residual rate after washing artificial dirt

After adhering squalene 1% owf, oleic acid 10% owf, gelatin 2.5% owf to the crotch piece fabric test cloth, using a normal household washing machine, use 0 detergent (made by Kao Corporation, Attack). Washing was performed in addition to a concentration of .67 g / L. Each test cloth after washing was sun-dried, oleic acid remaining on the test cloth was extracted with methanol, the residual amount of oleic acid was measured by gas chromatography, and the oleic acid residual ratio (%) was determined. Smaller numbers indicate better dirt removal.
(Deodorization test)

Put a magnetic stirrer bar in a 500 mL Erlenmeyer flask (actual volume: 625 mL), attach a thread to the test cloth obtained by cutting the crotch piece into 4 cm x 5 cm, and fasten the end of the thread to the outside of the Erlenmeyer flask with cellophane tape. The test cloth was suspended in the Erlenmeyer flask. Then, 2% ammonia solution for ammonia deodorization and 3 μl acetic acid solution for acetic acid deodorization were dropped on the inner wall of the Erlenmeyer flask by 5 μL with a micropipette. The Erlenmeyer flask was quickly sealed with a silicon stopper covered with a double wrap, and further sealed with a rubber band made of triple wrap. Then, it was left to stand at 20 ° C. for 120 minutes while stirring with a magnetic stirrer. After leaving it to stand for 120 minutes, the silicon stopper is rubbed so that the wrap is not peeled off, and a measuring tube with a silicon stopper for measurement (for gas-tech, No.3La / ammonia: made by gas-tech, for No.81 / acetic acid) ) Was used to measure the gas concentration in the Erlenmeyer flask. A similar test was performed without suspending the test cloth in the Erlenmeyer flask, and this was used as a blank measurement value. Deodorization rate (%) for test cloth not washed using the following formula (2) (new article) and test cloth after 30 times of washing using household laundry detergent (after 30 washings) Was evaluated according to the following criteria.
Deodorization rate (%) = [(blank measurement value−test cloth measurement value) / blank measurement value] × 100 (2)
◎: Deodorization rate 90% or more ○: Deodorization rate 80% or more and less than 90% Δ: Deodorization rate 50% or more and less than 80% ×: Deodorization rate less than 50% (wear evaluation)

For women in their 20s and 40s who usually use a pad for cages, select the period corresponding to the ovulation period in the menstrual cycle and wear the women's shorts of Examples 1 to 4 and Comparative Examples 1 to 3 without the pad for cages. , I took a wearing feeling questionnaire. There were three subjects per short, and the presence of discomfort was evaluated especially for the local wearing feel, and the evaluation per short was made into the following three-level evaluation.
○: All 3 people have no discomfort △: 1 person has discomfort ×: 2 to 3 people have discomfort

  ADVANTAGE OF THE INVENTION According to this invention, the underwear for women which has the crotch part which was made not to give the discomfort by a smell and the discomfort by a skin contact based on secretions, such as a urine and a vaginal discharge, at the time of wear can be provided. .

1: Crotch piece 1sp: Single pile 1p: Pile layer 1g: Ground tissue layer 2: Site corresponding to crotch of body cloth 3: Body cloth 4: Underwear for women having crotch

Claims (6)

A female underwear having a crotch portion comprising a body cloth and a crotch piece,
The crotch piece includes a cellulosic fiber modified to a structure in which cellulose molecules have a carboxyl group structure,
The crotch piece containing the cellulosic fiber is made of a knitted fabric having a pile structure,
The pile structure forms a semi-twisted loop;
The crotch piece has a joining structure in which the crotch piece is superimposed on the skin side of a portion corresponding to the crotch portion of the body cloth, and at least a part of the outer edge of the crotch piece is sewn or bonded. women's underwear with. The underwear for women having a crotch part according to claim 1 , wherein the pile structure is provided on substantially the entire skin side surface of the knitted fabric . The undergarment for women having a crotch part according to claim 1 or 2 , wherein the cellulose fiber in which cellulose molecules are modified to have a carboxyl group structure is contained in a spun yarn having a pile structure. . The woman having a crotch part according to any one of claims 1 to 3, wherein the knitted fabric having a pile structure has a water vapor transmission rate of 400 g / m ² · h or more according to JIS L 1099 (A-1 method). For underwear. Of the outer edges to be sewn or bonded to the crotch piece, the joining structure is not sewn or bonded at the ridgeline on the inner crotch side at the time of wearing, but the ridgeline on the front side and the back side is sewn or bonded The underwear for women having a crotch portion according to any one of claims 1 to 4, wherein the undergarment has a crotch portion. 6. The pile structure according to claim 3 , wherein the pile structure has a loop pile structure arranged in a plurality of straight lines, and the plurality of straight lines extend in the front-rear direction of the body when worn . Women's underwear having a crotch portion according to any one of the above.