JP2001248063A - Innerwear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an innerwear having such excellent functions as to have sustainable odorization-preventive effect and/or deodorant effect, and simultaneously have antibacterial, antifungal and stain-proofing effects. SOLUTION: This innerwear is such as to consist mainly of fiber and to be characterized by that the surface of each fabric fiber is provided with at least one kind of binder selected from an alkyl silicate-based resin, silicone-based resin and fluorine-based resin, and a photocatalytic agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a lingerie, a foundation, and the like, which have excellent functions such as durable anti-odor, deodorant, antibacterial, anti-mold and anti-fouling properties which have never existed before. About innerwear such as underwear.

[0002]

2. Description of the Related Art In recent years, health and hygiene awareness has been increasing in accordance with the improvement of living standards. Have been.

[0003] On the other hand, in the field of innerwear, especially in innerwear such as lingerie, foundation, and underwear, there is a high need for such deodorant, antibacterial and antifouling properties, but they provide excellent deodorizing, antibacterial and antifouling effects. Processing technology has not been developed yet.

[0004] In particular, after light exercise or work, the smell of sweat may be applied to the innerwear such as foundation and underwear.
When body odor soaks, it is difficult to remove the odor, and it is often unpleasant. If this odor is left unattended, dirt and mold will be generated, which is not good for hygiene.

[0005]

As described above, in the prior art, the odor soaked in the fiber cloth cannot be deodorized, and it is impossible to prevent odor.

In view of the above, the present invention has been made in view of the needs of those who wear and use conventional innerwear clothing,
Innerwear such as lingerie, foundation, and underwear with excellent functions that have no discoloration or deterioration during use, has a persistent odor prevention / deodorization effect, and can simultaneously satisfy antibacterial, antifungal and antifouling properties. Is to be provided.

[0007]

Means for Solving the Problems The innerwear of the present invention for solving the above problems has the following constitutions (1) to (10). (1) Innerwear mainly comprising a fiber, wherein at least one kind of binder selected from an alkyl silicate-based resin, a silicone-based resin and a fluorine-based resin and a photocatalytic agent are provided on the fiber surface. And innerwear. (2) The binder is 0.05 to 1 with respect to the fiber weight.
The innerwear according to the above (1), which is contained in an amount of 00% by weight. (3) The innerwear according to the above (1) or (2), wherein the photocatalyst is a composite oxide comprising titanium and silicon. (4) The photocatalyst is a particle having a specific surface area of 100 to 300 m ² / g, (1) to (3) above.
Innerwear according to any of the above. (5) The innerwear according to any one of the above (1) to (4), wherein the photocatalytic agent has an average primary particle diameter in a range of 1 to 20 nm. (6) The photocatalyst is used in an amount of 0.05 to 30 with respect to the fiber weight.
The innerwear according to any one of the above (1) to (5), wherein the innerwear is contained by weight%. (7) The innerwear according to any one of the above (1) to (6), wherein the binder contains zeolite. (8) The zeolite is 0.01 to 1 with respect to the fiber weight.
The innerwear according to the above (7), wherein 0% by weight is contained. (9) The innerwear according to any one of the above (1) to (8), wherein the binder contains a silane coupling agent. (10) The innerwear according to the above (9), wherein the silane coupling agent is contained in an amount of 0.01 to 30% by weight based on the weight of the fiber.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the innerware of the present invention will be described.

The innerwear of the present invention comprises fibers as a main constituent material, and at least one binder selected from an alkyl silicate resin, a silicone resin and a fluorine resin, and a photocatalyst on the surface of the fibers. It has an agent.

In the present invention, the photocatalytic agent has a property of being excited by ultraviolet rays and oxidatively decomposing organic substances by a strong oxidizing power. Specifically, the photocatalytic agent has a crystal structure called anatase type or rutile type. Includes what you have.

In the innerwear of the present invention, the photocatalyst comprises a deodorant, a colorant decomposing and removing property (antifouling property),
Focusing on having bactericidal properties (antibacterial and antifungal),
This is applied to innerwear to take advantage of it.

[0012] The action of the photocatalyst is as follows: the odor of sweat (main component: ammonia and isovaleric acid) is generated in the water emanating from the eccrine glands and apocrine glands under the skin due to resident bacteria around the skin; the smell is excited by photocatalyst a · OH group (hydroxyl radicals) touched the main component of sweat, which CO ₂
(Carbon dioxide) and H ₂ 0 (water) and deodorize.

[0013] In addition, in the aging odor (middle and old age odor), the main component is nonenal, in the elderly odor (middle and old age odor), the main component is indole and skatole, in the feces urine odor, the main component is ammonia, and in other body odors, it is. Acetaldehyde and methyl mercaptan as main components, and nicotine as a main component in cigarette odor can be decomposed with a photocatalytic agent, respectively.

In the present invention, among such photocatalysts, it is preferable to use a composite oxide comprising titanium and silicon.

Such a composite oxide is disclosed in, for example,
A catalyst prepared by the method described in Japanese Patent No. 55184 may be used. In general, a binary composite oxide composed of titanium and silicon is, for example, a “catalyst” (Vol. 17, No. 3,
As described on page 72 (1975, published by the Catalysis Society of Japan), it is known as a solid acid, and the ratio of titanium to silicon is 20 to 95% in terms of oxide in terms of oxide.
Mol% and silicon oxide are preferably in the range of 5 to 80 mol%.

The particle diameter of the photocatalyst is too large,
When the specific surface area is too small, the decomposition rate for organic substances, particularly bacteria, tends to decrease. Further, in the deodorizing reaction, as described above, the malodorous component is adsorbed on the catalyst, and thereafter,
It is thought that this undergoes a process of undergoing ultraviolet oxidative decomposition, and the quality of adsorption of the malodorous component is considered to greatly affect the deodorizing efficiency. According to the findings of the present inventors, the primary particle diameter is preferably 20 nm or less, more preferably 1 nm or less.
-20 nm, and the specific surface area is 100-300.
Those having m ² / g are preferably used.

The amount of the photocatalyst attached to the fiber structure is preferably 0.05 to 30% by weight, more preferably 0.05 to 20% by weight. Such an adhesion amount can be easily achieved by a method of applying to a fabric by printing or gravure. In the method of impregnating the photocatalyst agent with padding, from the viewpoint of softness of texture, 0.08 to 1
It is preferable to control the adhesion amount to 0% by weight.

In the present invention, for example, as described above, in order to attach a photocatalyst comprising a composite oxide of titanium and silicon to the fiber structure constituting the innerwear,
By using at least one kind of binder selected from an alkyl silicate resin, a silicone resin and a fluorine resin, it is possible to prevent the decomposition, coloring, and generation of odor of the photocatalyst specific to the organic resin due to oxidation.

With this combination, an intermediate layer of an inorganic substance such as titanium peroxide is not required between the fiber and the binder containing the photocatalyst, and the washing durability of the photocatalyst, the texture of the product,
The cost and the like are dramatically improved as compared with those having an intermediate layer.

The alkyl silicate used in the present invention preferably comprises a Si—O bonding portion and a linear or branched saturated alkyl, and has OH groups at both ends. is there. That is, it includes the structure shown below.

OH- (Si-O) _n -R-OH In the formula, R is a linear or branched saturated alkyl group having 1 to 10 carbon atoms, and n represents an integer of 1 or more, and is preferably Is in the range of 1,000 to 10,000 to increase the inorganicity.

Such an alkyl group is a linear or branched saturated alkyl such as methyl, ethyl, propyl, isopropyl and the like.

The amount of the binder to be attached is preferably 0.05 to 100% by weight with respect to the fiber in the coating method.
And more preferably 0.05 to 30% by weight;
Further, in the impregnation method, from the viewpoint of texture, preferably 0.0
It is preferable to control the amount in the range of 5 to 10% by weight.

As the silicone resin, a condensation cross-linkable resin belonging to the class of silicone resin or silicone varnish can be used. Such a resin is a condensation cross-linkable resin such as tetraethoxysilane or methyltrimethoxysilane. , Or those obtained by condensing several kinds of blends. These are 3
A resin having a three-dimensional structure is formed, and it has the highest heat resistance and chemical resistance among silicone resins. The amount of such a resin adhered to the fiber is preferably 0.1 in the coating method.
In the impregnation method, the content is preferably controlled in the range of 0.05 to 30% by weight from the viewpoint of feeling.

As the fluororesin, vinyl ether and / or vinyl ester and a fluoroolefin polymerizable compound are preferably used because they have very excellent properties. For example, polyvinyl fluoride, polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkylvinylester, vinylester-fluoroolefin, and the like are preferably used because they are less decomposed and deteriorated.
The amount of adhesion of such a resin is preferably used in the same amount as that of the silicone resin.

Further, it is preferable to further add zeolite to such a binder, because it has an effect of further improving antibacterial performance.

That is, it has the effect of improving the adsorption power of odorous components and increasing the ratio of inorganic components in the structure, thereby suppressing decomposition by the photocatalyst. Such zeolites include gold, platinum,
What carried noble metal, such as silver and palladium, preferably in the range of 0.01 to 5% by weight can also be used, whereby the antibacterial effect is further improved. From the viewpoint of hand, the amount of the zeolite to be applied is preferably 0.01 to 10% by weight based on the fiber, and preferably 0.01 to 5% by weight based on the impregnation method. Good to do.

Next, it is preferable to further add a coupling agent to the above-mentioned binder since the adhesive strength between an inorganic substance and an organic substance can be improved. This gives the fiber,
A chemical bond acts between the binder and the photocatalyst, leading to an improvement in washing durability. The amount of the coupling agent to be attached to the fiber is preferably 0.01 to 0.01% by the coating method.
In the impregnation method, the content is preferably controlled in the range of 0.01 to 10% by weight from the viewpoint of feeling. As such a coupling agent, for example, a silane coupling agent can be preferably used.

Next, the working fluid containing the photocatalytic agent and the binder is fixed to the surface of the fiber such as in the fabric. The method is not particularly limited, but the working fluid is impregnated into the fabric or the like. Then, it is preferable to perform squeezing with a mangle roll and through a dry-cure process, that is, according to the so-called ordinary resin processing of a fabric.

The temperature and time conditions for dry-curing are preferably, for example, dry: 110-135 ° C. × 1-3 minutes, and curing: 160-190 ° C. × 1-3 minutes.

In the coating process such as printing and gravure, the working liquid is adjusted to an appropriate viscosity with a glue, and is applied by a knife coater, a gravure roll coater, printing, or the like, and then at 170 to 200 ° C. × 5. So-called ordinary printing and gravure processing, which are fixed under a temperature condition of up to 30 minutes, can be preferably employed. In any case, in such processing, it is preferable to select various conditions in a direction in which various characteristics such as air permeability of the fabric are maintained.

As the innerwear of the present invention, synthetic fibers or natural fibers can be used, and there is no particular limitation. Preferably, polyester fibers are used because of the flexibility, smoothness, light weight and high strength of the innerwear. Alternatively, those made of fibers containing 50% by weight or more of polyamide fibers are preferable.

Here, as the polyester fiber, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate and the like are preferably used. Further, polyamide fibers such as nylon 6 and nylon 66 are preferable because the effect of the present invention is greatly exhibited.

The fiber form is not particularly limited, but filament yarn and spun yarn are preferably used. In addition, synthetic fibers such as polyurethane and polyacryl, semi-synthetic fibers such as acetate and rayon, and natural fibers such as wool, silk, cotton, and hemp may be mixed and used with such synthetic fibers.

The innerwear referred to in the present invention includes all or all of the innerwear made of fibers, such as a fabric and a band, a string, a thread, and the like attached thereto.

In particular, lingerie, foundations,
In the fabric constituting the underwear, the form of a knitted fabric or a woven fabric is preferable, and a non-woven fabric can also be used.

In the case of a knitted fabric, the knitting yarn fineness is 20 to 150.
As the decitex and the texture, double-sided smooth, tricot half and the like are preferably used.

The innerwear of the present invention is not particularly limited as long as it is an innerwear composed of fibers, and is not particularly limited. Lingerie such as slips, shorts, negligee, and new inner, brassier, girdle, and the like. Various underwear shirts such as foundations and underwear are exemplified.

[0039]

The present invention will be described in more detail with reference to the following examples.

The following method was used for quality evaluation in the examples. The sample was collected from each innerwear fabric. [A] Washing Using an automatic reversing spiral electric washing machine VH-3410 (manufactured by Toshiba Corporation), the product was washed at 0.2% of a commercially available detergent, at a temperature of 40 ± 2 ° C., and at a bath ratio of 1:50 with strong reversal for 5 minutes. Thereafter, the operation of rinsing for 2 minutes while draining and overflowing was repeated twice, and this was defined as one washing. [B] Evaluation of deodorant property by detector tube method The initial concentration was 20 in a 500 ml container containing 10 g of the sample.
Ammonia gas is added so as to be 0 ppm and sealed.
After leaving for 1 hour, the residual ammonia concentration was measured with a gas detector tube.

Then, it was calculated as the deodorizing rate (%) according to the following formula (odor A).

Deodorization rate (%) = [1- (concentration measured by gas detector tube) / (initial concentration)] × 100 In a similar manner, after 200 ppm of acetaldehyde for 1 hour (odor B), and 60 ppm of methyl mercaptan-3 After a period of time (odor C), the residual gas concentration was measured, and the deodorizing rate of each gas was calculated. [C] Odor evaluation of deodorizing property against tobacco odor A 500 ml glass Erlenmeyer flask was placed with the entrance facing down, and a smoking cigarette was placed immediately below the entrance for 5 seconds. 3 g was charged, and sealed with a glass stopper. After leaving for 1 hour, the glass stopper was opened, and ten persons were allowed to smell the residual odor, and the sensory evaluation was performed. The odor at that time was evaluated by the following evaluation score, and the average value was calculated.

5: Intense odor 4: Strong odor 3: Easy to detect 2: Weak odor to know what odor 1: No odor [D] Odor evaluation of odor prevention by isovaleric acid odor 0.01% iso 5 μl of the valeric acid aqueous solution is weighed with a microsyringe, and five drops of the valeric acid solution are dropped at the center of the fabric cut into a size of 10 cm × 10 cm. The method of dropping is to drop one point at the center of the fabric and then four points just like the fifth point of the dice so as to surround one point at the center.
After the cloth was left under a fluorescent lamp for 3 hours, ten persons smelled the smell of the cloth to perform a sensory evaluation. The odor at that time was evaluated by the following evaluation score, and the average value was calculated.

5: Intense smell 4: Strong smell 3: Easy to perceive 2: Weak smell to know what smell 1: Odorless [E] Antibacterial evaluation method The evaluation method adopts a unified test method, and the test cells are used. Used a clinical isolate of Staphylococcus aureus. The test method was as follows. The test bacteria were poured into a sterilized test cloth, the number of viable bacteria after culturing for 18 hours was counted, and the number of bacteria relative to the number of cultured bacteria was obtained. Under conditions of log (B / A)> 1.5, log (B / A
C) was defined as the difference in the number of bacteria, and 2.2 or more was regarded as a pass.

Here, A is the number of bacteria recovered and dispersed immediately after inoculation of the unprocessed product, B is the number of bacteria recovered and recovered after 18 hours of cultivation of the unprocessed product, and C is the number of bacteria recovered after 18 hours of cultivation of the processed product. The numbers of the collected bacteria are shown. [F] Antifouling evaluation method Step 1: 100 ° C. × polyethylene bag (20 liters)
0.2 g of contaminants having the composition shown in Table 1 dried for 2 hours, a sample of 10 cm in length and 16 cm in width, and one rubber tube for ICI pilling are put. Inflate the bag (to about 10 liters) with air at 20 ° C. × 65% RH and stop with a rubber band.

[0046]

[Table 1]

Procedure 2: The polyethylene bag of Procedure 1 was replaced with ICI
Place in tester box and rotate for 1 hour. Then remove the sample.

Procedure 3: The treated sample was subjected to 1 washing under standard washing conditions.
Wash twice. Steps 1 to 3 are repeated twice more.

Step 4: As described above, the L value (brightness) of the sample in which the contaminant adhesion / washing was repeated 10 times and the untreated sample were measured with a colorimeter, and the ΔL value was calculated.

The smaller the ΔL value, the less dirt is attached,
In addition, the dirt is easy to remove and is good.

Example 1 Using a nylon 6 filament yarn (33 decitex, 10 filaments) of polyamide fiber, 42 gauge 30
The knitted fabric was knitted on a double-sided circular knitting machine with a smoothness on both sides (110 g / m ² ). Next, scouring and dyeing (acid fluorescent dye (white)) were performed under ordinary processing conditions.

Next, a working fluid was prepared using the following working agents and the amounts used. A, a composite oxide of titanium and silicon (concentration: 20%) 0.8% by weight A composite oxide of titanium and silicon having an average primary particle diameter of 7 nm and an average specific surface area of 150 m ² / g was formed into a dispersion of an aqueous solution. The particles having an average particle diameter of 0.3 μm were used. B, alkyl silicate resin (concentration 20%) 0.5% by weight Silicone resin (concentration 45%) 2.0% by weight C, noble metal-supported zeolite (concentration 20%) 0.2% by weight D, silane coupling 0.2% by weight of the agent (concentration: 100%) Soak the fiber fabric after dyeing in the above, squeeze with a mangle roll with 80% by weight of a pickup, dry at 130 ° C. for 1.5 minutes, and heat-treat at 175 ° C. for 1 minute. Then, a fabric structure containing a photocatalyst on the fiber surface was obtained, and sewed on a slip as innerwear. This fabric was evaluated for anti-odor properties (deodorizing properties), antibacterial properties, antifouling properties, etc., and the results are shown in Table 2.

Example 2 Using a nylon 6 filament yarn of polyamide fiber (33 decitex, 10 filaments), a 36-gauge single tricot knitting machine was used to knit a half tricot fabric having an on-machine course density of 72 / inch. Next, scouring and dyeing (acid fluorescent dye (white)) were performed under ordinary processing conditions.

Next, a working fluid was prepared using the same working agent and the same amount as in Example 1.

The fiber fabric after the above-mentioned dyeing is immersed in this, squeezed with a mangle roll at 75% by weight of a pickup,
And then heat-treated at 175 ° C. for 1 minute to obtain a fabric structure containing a photocatalyst on the fiber surface, and sewed on a slip as innerwear. This fabric was evaluated for anti-odor properties (deodorizing properties), antibacterial properties, antifouling properties, and the like, and the results are shown in Table 2.

Example 3 The dyed nylon tricot knitted fabric of Example 2 was
Working fluids were prepared using the following processing agents and the amounts used. A, a composite oxide of titanium and silicon (concentration: 20%) 10.0% by weight A composite oxide of titanium and silicon having an average primary particle diameter of 7 nm and an average specific surface area of 150 m ² / g was formed into a dispersion of an aqueous solution. The particles having an average particle diameter of 0.3 μm were used. B, alkyl silicate resin (concentration 20%) 6.5% by weight Silicone resin (concentration 45%) 25.5% by weight C, noble metal-supported zeolite (concentration 20%) 2.5% by weight D, silane coupling 2.5% by weight of agent (concentration: 100%) Working fluid: 40 parts of a sizing agent was further mixed at a ratio of 120 parts, and printing and printing were performed on a screen. After printing, it was dried at 120 ° C. for 2 minutes, and then heat-treated with superheated steam at 180 ° C. for 1 minute to wash and finish the paste. In this way, a fabric structure containing a photocatalyst on the fiber surface was obtained and sewn on a slip as innerwear. This fabric was evaluated for anti-odor properties (deodorizing properties), antibacterial properties, antifouling properties, and the like, and the results are shown in Table 2. Comparative Examples 1 and 2 About the fiber fabrics at the time of completion of dyeing used in Examples 1 and 2 (Comparative Examples 1 and 2, respectively), deodorant deodorant properties, antibacterial properties, and antifouling properties Table 2 shows the results.

[0057]

[Table 2]

As is clear from Table 2, the products of Examples 1 to 3 are more effective in preventing odoration than those of Comparative Examples 1 and 2.
As for the deodorizing property, it can be seen that it exhibits an extremely excellent level of function, and is also excellent in antibacterial property, antifouling property and durability. The cloth was sewn on a slip and actually worn, and as a result, the same effects as the evaluation of the cloth, such as prevention of odor, were confirmed.

[0059]

According to the first aspect of the present invention, an innerwear having excellent functions having durability, odor prevention, deodorant, antibacterial, antifungal and antifouling properties at the same time. Can be provided.

According to the second aspect of the present invention, durable anti-odor properties, deodorant properties, antibacterial properties, anti-fungal properties, and the like can be obtained without impairing the softness of the texture of the original textile product. It is possible to provide innerwear having excellent functionality having antifouling properties at the same time.

According to the third aspect of the present invention, in particular, by using at least one kind of binder selected from an alkyl silicate resin, a silicone resin and a fluorine resin, a photocatalyst agent specific to an organic resin is used. It has excellent functionality that can prevent decomposition, coloring, and odor due to oxidation, and has durable anti-odor, deodorant, antibacterial, antifungal and antifouling properties at the same time. Can be provided.

According to the fourth aspect of the present invention, in particular, it has a good adsorption of malodorous components and a durable odor preventing property.
It is possible to provide innerwear having excellent functionality, which has deodorant properties, antibacterial properties, antifungal properties and antifouling properties at the same time.

According to the fifth aspect of the present invention, in particular, it has good adsorption of malodorous components and durable odor prevention.
It is possible to provide innerwear having excellent functionality, which has deodorant properties, antibacterial properties, antifungal properties and antifouling properties at the same time.

According to the sixth aspect of the present invention, durable anti-odor properties, deodorant properties, antibacterial properties, anti-fungal properties and the like can be obtained without impairing the softness of the texture of the original textile product. It is possible to provide innerwear having excellent functionality having antifouling properties at the same time.

According to the present invention, the antibacterial performance is high, and at the same time, the antibacterial property, the deodorant property, the antibacterial property, the antifungal property and the antifouling property which are durable are simultaneously excellent. Innerware having advanced functionality can be provided.

According to the eighth aspect of the present invention, in particular, the antibacterial performance is high and the durable odor preventing property is high without impairing the softness of the texture of the original textile product.
It is possible to provide innerwear having excellent functionality, which has deodorant properties, antibacterial properties, antifungal properties and antifouling properties at the same time.

According to the ninth aspect of the present invention, the adhesive strength between the inorganic substance and the organic substance can be improved, and a chemical bonding force acts between the fiber, the binder, and the photocatalyst, and particularly, the washing durability is good. , Durable anti-odor, deodorant,
It is possible to provide an innerwear having excellent functionality having antibacterial properties, antifungal properties and antifouling properties at the same time.

According to the tenth aspect of the present invention, in particular,
Without impairing the softness of the texture of the original textile product,
It can improve the adhesive strength between inorganic and organic substances, and has good washing durability due to the chemical bonding between the fiber, binder and photocatalyst, durable odor prevention, deodorant, It is possible to provide an innerwear having excellent functionality having antibacterial properties, antifungal properties and antifouling properties at the same time.

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 3B028 DA03 3B029 HB05 4L031 AB31 BA09 BA19 BA20 DA12 DA13 4L033 AB04 AC10 BA96 CA59 DA06

Claims (10)

[Claims] (1) Innerwear comprising fibers as a main constituent material, wherein the fibers have at least one binder selected from an alkyl silicate resin, a silicone resin and a fluorine resin on the surface of the fibers, and a photocatalytic agent. Innerwear characterized by the following. 2. The method according to claim 1, wherein the binder is used in an amount of 0.0
The innerwear according to claim 1, wherein the content is 5 to 100% by weight. 3. The innerwear according to claim 1, wherein the photocatalyst is a composite oxide composed of titanium and silicon. 4. The method according to claim 1, wherein the photocatalyst is particles having a specific surface area of 100 to 300 m ² / g.
4. The innerwear according to any one of to 3 above. 5. The photocatalytic agent has an average primary particle diameter of 1 to 20.
The innerwear according to any one of claims 1 to 4, wherein the innerwear is in a range of nm. 6. The method according to claim 1, wherein said photocatalytic agent is 0.05% by weight of the fiber.
2 to 30% by weight.
5. The innerwear according to any one of 5. 7. The innerwear according to claim 1, wherein the binder contains zeolite. 8. The method according to claim 1, wherein the zeolite has a fiber weight of 0.0
8. The composition according to claim 7, wherein the content is 1 to 10% by weight.
The innerwear described. 9. The innerwear according to claim 1, wherein the binder contains a silane coupling agent. 10. The innerwear according to claim 9, wherein the silane coupling agent is contained in an amount of 0.01 to 30% by weight based on the weight of the fiber.