JP2002000658A - Sanitary shorts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problem on a conventional sanitary shorts that it has a poor insulation effect resulting in poor blood circulation due to chill in a lower abdominal region and a waist, and in poor health condition arising from pain in the lower abdominal region and a waist pain. SOLUTION: This sanitary shorts is placed inside a shorts body 40, and possesses a lower consumed calories than that of the shorts body 40 at least in one part of the part connecting to the lower abdominal region and/or the waist part. By this, an effect of keeping warm is raised, and it becomes possible to relieve chill in the lower abdominal region and the waist.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sanitary shorts having a high heat retaining effect at a portion where a crotch portion to which a sanitary napkin is attached is breathable and hits a lower abdomen or the like.

[0002]

2. Description of the Related Art Conventional sanitary shorts are made of a breathable material mainly composed of nylon or the like, and ensure the breathability of a crotch portion, which is a mounting portion of a sanitary napkin, and become stuffy. Measures have been taken to control rash.

[0003] However, conventional sanitary shorts are formed entirely of the above-mentioned breathable material and are thin,
The lower abdomen and lower back become cold and blood circulation worsens. In particular, during menstruation, when the lower abdomen or lower back gets cold, lower abdominal pain or lower back pain is caused due to impaired blood circulation of vasomotor nerves, which tends to cause poor physical condition.

Hitherto, in order to improve blood circulation and relieve pain, a method of layering or warming the lower abdomen and lower back with a warmer has been adopted.

[0005] However, when layered, the circumference of the waist becomes thick and the appearance deteriorates, and when using a warmer, only the body part in contact with the warmer is locally heated, so that low-temperature burns and the like are likely to occur.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide shorts that can enhance the heat-retaining effect by providing a heat-retaining region particularly at the lower abdomen and the waist.

[0007]

SUMMARY OF THE INVENTION The present invention provides a front body, a back body, a crotch, a waist portion formed at an upper edge of the front body and the back body, and a pair of leg openings. In the sanitary shorts having at least a portion excluding the crotch portion has air permeability, and at least one of a portion abutting on the lower abdomen and a portion abutting on the waist portion has a caloric consumption (kcal / (m ² · hr) is provided.

For example, a heat insulating cloth forming the heat insulating area is provided inside a shorts body forming a front body and a rear body.

[0009] It is preferable that the heat consumption in the heat retaining region is 70% or less of the heat consumption in the region other than the heat retaining region of the shorts.

For example, a crosslinked acrylate resin to which a polyvalent metal salt generating heat by hydration heat is added is provided in at least a part of the heat retaining region.

This crosslinked acrylate resin has a temperature of 2
It has a moisture content of 20% or more in an environment of 0 ° C. and a relative humidity of 65%.

In the case where the heat insulating cloth is further provided, it is preferable that the heat insulating cloth is subjected to a raising treatment so that the bulk of the heat insulating cloth is at least 1.8 times the bulk of the shorts body.

According to the present invention, as described above, a heat insulating cloth is provided on a portion of the shorts body that contacts the lower abdomen and / or a portion of the shorts body that contacts the waist, or the crosslinked acrylate resin is provided in the shorts body. Since the heat retaining region is formed by partially weaving the fibers containing the above or partially processing the fabric of the shorts body, it is possible to enhance the heat retaining effect and suppress the cooling of the lower abdomen and the waist.

In particular, the shorts of the present invention are able to prevent stuffiness because they have air permeability.

The polyvalent metal salt to be added to the crosslinked acrylate is one or two selected from nitrates, hydrochlorides, or sulfates of polyvalent metals such as Ca, Mg, and Al.
It is composed of more than one kind of salt. For example, when moisture such as sweat from the body is absorbed by the heat insulating cloth, H ₂ O is strongly attracted by the charge of these polyvalent metal ions,
A so-called hydration phenomenon occurs. When hydration occurs, a large amount of energy is released and heat is generated, so that the heat retaining effect can be enhanced.

[0016] Further, when the heat-retaining cloth is subjected to a raising treatment, warmed air is stored between the raising and the heat-retaining effect can be further enhanced.

[0017]

FIG. 1 is a perspective view showing a sanitary short according to an embodiment of the present invention, and FIG. 2 is a developed view showing an inner surface of the short. In FIG. 2, the Y direction where the front body 11, the crotch 13, and the back body 12 are continuous is defined as a vertical direction,
The X direction orthogonal to this is the horizontal direction.

The sanitary short according to the present invention has a shorts body 40 forming a front body 11, a back body 12, and a crotch portion 13. The side edge 11a of the front body 11 and the side edge 12a of the rear body 12 of the shorts body 40 are joined, and the side edge 11b of the front body 11 and the rear body 1 are joined together.
The waist portion 15 and the leg openings 16 are formed by being joined to the second side edge 12b.

The shorts body 40 according to the present invention comprises:
It is preferable that it is made of a material that is comfortable and breathable. The shorts body 40 is formed of a fiber mainly composed of nylon. It is preferable to add a polyurethane fiber in order to improve the elasticity of the shorts body. Further, it is preferable to add a cotton fiber in order to improve water absorption and heat retention.

For example, the shorts body 40 comprises 61% by mass of nylon fiber yarn, 9% by mass of polyurethane fiber yarn,
It is formed of a woven fabric in which cotton is 22% by mass, polynosic is 4% by mass, and acrylate fiber yarn is 4% by mass. Here, the acrylate fiber is acrylonitrile,
It is a copolymer with a monomer such as an acrylic ester. Further, it is preferable that a breathable waterproof cloth 18 is joined to the crotch portion 13.

As shown in FIGS. 1 and 2, a heat insulating cloth 20 is superimposed on a portion 11c of the front body 11 of the shorts body 40 that contacts the lower abdomen and a portion 12c of the back body 12 that contacts the waist. It is a warmed area that is stitched and sewn.

The heat insulating cloth 20 includes the shorts main body 40.
Heat consumption (kcal /
m ² · hr).

Since the heat insulating cloth 20 is superimposed on the shorts body 40, the heat insulating effect can be enhanced, the lower abdomen and the waist can be suppressed, and the blood circulation can be improved. By improving blood circulation, lower abdominal pain and lower back pain can be alleviated, particularly during menstruation.

The heat insulating cloth 20 is provided with a shorts body 40.
It is provided only at the portion that contacts the lower abdomen and waist.
Therefore, the overall air permeability of the shorts body 40 is not impaired. In particular, since the peripheral region of the crotch portion 13 is formed of a breathable material, it is possible to prevent stuffiness around the portion where the sanitary napkin 25 is mounted.

In FIG. 2, since the lower edges 20a, 20a of the heat insulating cloth 20 are curved in a V-shape and extend toward the crotch 13, the ventilation without the heat insulating cloth 20 being overlapped. A region with good characteristics is as large as possible, and the V-shaped lower edges 20a, 20a can cover the lower abdomen with a large area. Further, the heat insulating cloth 20 may be formed in a rectangular shape, and may be joined to the shorts main body 40 with its longitudinal direction directed in the X direction in the figure.

Further, as shown in FIG.
May be joined only from the right edge 11a to the left edge 11b of the front body 11, but not joined to the back body 12. In this embodiment, when the shorts are worn, the heat insulating cloth 20 comes into contact with the lower abdomen, so that the heat insulating effect on the lower abdomen can be enhanced. Conversely, the insulation cloth 2
0 may be provided only on the back body 12 and in this case,
It can enhance the heat retention effect on the waist.

Alternatively, as shown in FIG. 4, the heat insulating cloth 20 may be joined only to the central portion of the front body 11. Similarly, the heat insulating cloth 20 may be joined only to the central portion of the back body 12. Also, when wearing shorts, the heat insulating cloth 20 is placed on the lower abdomen or waist.
Abuts on the lower abdomen and the waist.

The heat insulating cloth 20 is formed of a yarn obtained by blending a crosslinked acrylate fiber and an acrylic fiber.
The weight ratio of the crosslinked acrylate fiber is 3
0% and acrylic fiber are 70%, which is about 192 dtex. The heat insulating cloth 20 is a woven cloth formed only of the mixed spun yarn or a woven cloth formed of the mixed spun yarn and another fiber such as cotton.

The resin forming the crosslinked acrylate fiber is mainly composed of a copolymer of acrylonitrile (CH ₂ ＣＨCH—CN) and methyl acrylate as a monomer. Other examples of the monomers include vinyl halides, vinylidene halides, sulfonic acid-containing monomers and salts thereof such as p-styrenesulfonic acid, carboxylic acid-containing monomers and salts thereof such as itaconic acid, acrylamide, styrene, and vinyl acetate. And the like.

The cross-linked acrylate fiber of the present invention is further obtained by subjecting the acrylate to a hydrazine treatment, whereby the nitrile group (-CN) is cross-linked to form a cross-linked acrylate fiber.
Examples of hydrazine (NH ₂ —NH ₂ ) include hydrazine hydrate and hydrazine sulfate.

Further, a part of the remaining nitrile group is converted into a carboxyl group (—COOH) and the remaining nitrile group is converted into an amide group (—CONH ₂ ) by hydrolysis. This conversion treatment can be performed by containing an aqueous solution of a base such as an alkali metal hydroxide or ammonia or a strong acid. Then, the pH of the crosslinked acrylate fiber is adjusted to 4.0 to 7.0, and a part of the carboxyl group is changed to Ca, M
It is a metal salt to which one or more salts selected from nitrates, hydrochlorides and sulfates of polyvalent metals such as g and Al are added.

The reason why the pH is adjusted to 4.0 to 7.0 is to convert a part of the carboxyl group into a dissociated state and to convert the metal salt to the inside of the fiber uniformly and quickly.

The chemical structure which briefly shows the crosslinked structure of the crosslinked acrylate resin of the present invention is shown in Chemical formula 1.

[0034]

Embedded image

Chemical formula 1 has main chains 42 and 43 formed by polymerization of acrylonitrile and other monomers, and these main chains are cross-linked by bridges A and B. Crosslinking A is a portion where a nitrile group is cross-linked by hydrazine treatment. Also bridge B
Is a part in which a part converted into a carboxyl group is converted into a metal salt by a nitrate of the polyvalent metal M or the like.

Since the crosslinked acrylate resin contains a polyvalent metal M, when water such as moisture in the air or sweat is absorbed by the acrylic fiber, the water is strongly attracted to polyvalent metal ions. The so-called hydration phenomenon occurs.
Energy is released by this hydration and heat is generated, so that the heat insulating effect of the heat insulating cloth 20 is enhanced.

The above crosslinked acrylate resin can obtain a water content of 20% or more in an environment at a temperature of 20 ° C. and a relative humidity of 65%. Therefore, the insulation cloth 2
0 has a moisturizing property, and the moisturizing property makes it easier for the skin to feel warmth.

The resin forming the acrylic fiber forming the blended yarn is an acrylonitrile addition polymer.

Further, it is preferable that the heat insulation cloth 20 is subjected to a raising treatment so as to be bulky. By using the heat insulating cloth 20 brushed on the surface that comes into contact with the skin in this way,
The warmed air is collected between the raisings, which can further enhance the heat retaining effect.

In the present invention, a thread or a fiber containing the crosslinked acrylate resin may be woven in the heat retaining region which is a part of the shorts body, or a part of the shorts body may be formed by the crosslinked acrylate resin. May be processed to form a heat retaining region.

[0041]

EXAMPLE A heat insulating cloth 20 as an example is a blended yarn of a crosslinked acrylate fiber formed of a crosslinked acrylate resin shown in Chemical formula 1 and acrylic fiber (crosslinked acrylate is 70% by mass, acrylic is 30% by mass). %: 192 dtex)
And the surface was brushed. As shown in Table 1, the thickness was 2.2 mm and the basis weight was 174 g /
m ² and bulkiness 12.6 cm ³ / g.

The woven fabric forming the shorts body 40 is 33
61% by mass of dtex nylon fiber yarn, 22dtex
9% by mass of polyurethane fiber yarn, 22% by mass of 80/1 cotton yarn, 4% by mass of polynosic, and 4% of acrylate fiber. The acrylate is a copolymer of acrylonitrile and acrylate and is not crosslinked.

As shown in Table 1, the woven fabric forming the shorts body 40 has a thickness of 0.79 mm and a basis weight of 129 g / m2.
^{2. The} bulkiness was 6.13 cm ³ / g.

Table 1 shows the measured thickness, basis weight and bulkiness of the shorts body 40 with the heat insulating cloth 20 layered thereon.

The amount of heat consumed was measured for the shorts main body, the heat insulating cloth, and the shorts main body and the heat insulating cloth laminated.

(Method of Measuring Heat Consumption) A simulated sweat is supplied to six simulated sweat holes formed in the hot plate by a water-discharge pump. A simulated skin made of polyester fabric is placed on the hot plate, and simulated sweat is diffused on the simulated skin. This simulated sweat used water. A measurement sample such as the heat insulating cloth is cut into a size of 13 cm × 9 cm and placed on the simulated skin. Simulated sweating is continued for 20 minutes, and 5
The average value of the heat radiation measured every minute was determined.

The temperature of the hot plate was 37 ° C., and the simulated sweating rate was 0.
68 mg / cm ² / min, measurement environment is temperature 32 ° C.
The total humidity was 68% and the air flow was 15 m / sec or less.

[0048]

[Table 1]

The amount of heat consumed is as follows.
(Kcal / m ² · hr), the heat insulating cloth 20 is 126 (kc
al / m ² · hr) and 109 (kcal / m ² · hr) at the portion where the heat insulating cloth 20 was sewn to the shorts body 40.

The amount of heat consumed by the heat insulating cloth 20 depends on the shorts body 4
Therefore, the heat insulation cloth 20 is less likely to lose heat than the shorts body 40, and it is understood that the heat insulation effect is superior to the shorts body.

The amount of heat consumed by the heat insulating cloth 20 depends on the shorts body 4
0, which is 70% or less of the consumed heat amount, and it is possible to appropriately enhance the heat retaining effect from the heat retaining cloth 20 of the present invention.

In the shorts in which the heat insulating cloth 20 is joined to the shorts main body 40, the heat consumption is 109 (kcal / m2).
² · hr), and by using this overlapping structure, a synergistic heat retaining effect between the shorts main body 40 and the heat retaining cloth 20 can be obtained.

Next, the maximum heat flow rate, air permeability, and porosity of each sample were examined. The samples used in this experiment had the same insulation cloth 20 as shown in Table 1, but the shorts body 40 had a thickness of 0.89 mm and a basis weight of 165 g /.
m ² , bulk 5.4 cm ³ / g, heat consumption 198 (kc
al / m ² · hr).

The maximum heat flow velocity of the shorts body 40 is:
0.038 (cal / cm ² · sec), whereas the maximum heat flow rate of the heat insulating cloth 20 is 0.02 (cal / cm ² · sec).
cm ² · sec). As the value of the maximum heat flow rate is smaller, the warmth is felt at the moment of contact. Therefore, it can be seen that the thermal insulation cloth 20 has a higher contact warmth than the shorts body 40.

The air permeability of the shorts body 40 is 10
3 (cc / cm ² · sec), while the insulation cloth 2
The air permeability of 0 was 190 (cc / cm ² · sec). As the value of the air permeability increases as the value increases, it can be seen that the heat insulating cloth 20 has better air permeability than the shorts body 40.

Next, the porosity of the shorts body 40 is 85
%, Whereas the porosity of the heat insulating cloth 20 was 93%. As described above, since the porosity of the heat insulating cloth 20 is higher than that of the shorts main body 40, the user feels warmer when touching than the shorts main body 40.

[0057]

As described above, in the sanitary shorts according to the present invention, the portion contacting the lower abdomen and / or the waist includes:
By forming the heat retaining region having a lower heat consumption than the shorts main body, the heat retaining effect can be enhanced, and the lower abdomen and the waist can be suppressed from being cooled. Therefore, blood circulation can be promoted during menstruation and the like, and lower abdominal passage and lower back pain can be alleviated.

In particular, in the present invention, since at least a part of this region uses a crosslinked acrylate resin to which a polyvalent metal salt which generates heat by heat of hydration is added, moisture and sweat in the air come into contact. Sometimes, the heat insulating cloth generates heat, and it is possible to enhance the heat insulating effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sanitary short according to an embodiment of the present invention;

FIG. 2 is a development view of the sanitary shorts of FIG. 1,

FIG. 3 is a development view of a sanitary short according to another embodiment,

FIG. 4 is a development view of a sanitary short according to another embodiment,

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Front body 12 Back body 13 Crotch part 15 Waist part 16 Leg opening 18 Non-elastic member 20 Heat insulation cloth 25 Sanitary napkin 40 Shorts body

[Procedure amendment]

[Submission date] June 21, 2000 (2006.2.
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0057

[Correction method] Change

[Correction contents]

[0057]

As described above, in the sanitary shorts according to the present invention, the portion contacting the lower abdomen and / or the waist includes:
By forming the heat retaining region having a lower heat consumption than the shorts main body, the heat retaining effect can be enhanced, and the lower abdomen and the waist can be suppressed from being cooled. Therefore, blood circulation can be promoted during menstruation, and lower abdominal pain and lower back pain can be alleviated.

Claims (7)

[Claims] 1. A sanitary short having a front body, a back body, a crotch part, a waist part formed at an upper edge part of the front body and the back body, and a pair of leg openings. Except for the crotch portion, the portion excluding the crotch portion has air permeability, and at least one of a portion abutting on the lower abdomen and a portion abutting on the waist portion has a higher calorific value (kcal /
sanitary shorts characterized by having a heat insulating area with a small m ² · hr). 2. The sanitary shorts according to claim 1, wherein a heat insulating cloth forming the heat insulating area is provided inside a shorts main body forming a front body and a rear body. 3. The sanitary shorts according to claim 1, wherein the heat consumption of the heat retaining area is 70% or less of the heat consumption of the area other than the heat retaining area of the shorts. 4. The physiology according to claim 1, wherein a crosslinked acrylate resin to which a polyvalent metal salt generating heat by hydration heat is added is provided in at least a part of the heat retaining region. For shorts. 5. The sanitary short according to claim 4, wherein the crosslinked acrylate resin has a moisture content of 20% or more in an environment at a temperature of 20 ° C. and a relative humidity of 65%. 6. The sanitary short according to claim 2, wherein the heat insulating cloth is subjected to a raising treatment. 7. The sanitary short according to claim 2, wherein the bulk of the heat insulating cloth is at least 1.8 times the bulk of the shorts body.