JP6735546B2 - FIBER STRUCTURE, garment and other articles using the same, and method for manufacturing fiber structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fiber structure capable of providing a cooling sensation, particularly a fiber cloth such as a woven fabric, a knitted fabric, and a non-woven fabric, and clothes and other articles using the same.

In recent years, energy conservation has become one of the important measures due to concern about global warming, and Cool Biz has been proposed in which even a room temperature during cooling can be comfortable at the office even at 28°C.
Also, along with this, the average temperature has risen, and it is becoming apparent that it is a hotter day than a few years ago.
Therefore, various fiber structures have been developed so that the user can spend comfortably even in the summer.

For example, a fiber having a specific cross-section with yarn processing, and a matting agent for heat ray reflection added to the fiber (Patent Document 1), xylitol is applied to the surface of the fiber to provide a cooling sensation. The thing (patent document 2) etc. are known.
In particular, the one in which xylitol is attached to the surface of the fiber provides a cooling sensation when the skin comes into contact with the fiber, but xylitol falls off due to washing or the like and has poor durability. It was

Japanese Unexamined Patent Publication No. 2005-010282 JP, 2014-169519, A

Then, this invention makes it a subject to provide the fiber structure which shows a contact cold feeling for a long period of time.

In order to solve the above problems, the present invention has the following configurations.
(1) A fiber structure in which a polymer of a monomer having two or more double bonds capable of radical polymerization is attached to the surface of a polyacetal fiber.
(2) The fibrous structure according to (1), wherein the contact cooling sensation evaluation value q-max is 0.20 W/cm ² or more.
(3) The fibrous structure according to (2), wherein the contact cooling sensation evaluation value q-max after 20 washes according to JIS L0217 103 method is 0.20 W/cm ² or more.
(4) A garment using at least a part of the fiber structure according to (1) to (3).
(5) Shoes using at least a part of the fiber structure described in (1) to (3), insoles, sheets, duvet covers, duvet sides, mattresses, sleeping bags, pillows, pillowcases, upholstered chairs. , An article selected from the group consisting of a chair cover, a curtain, a car interior material, a bag, a tent, a curtain, a towel, a mat and a pencil case.

The fiber structure of the present invention has an excellent cool contact feeling that can provide a cool feeling when it comes into contact with the skin, and since it has excellent washing durability, it can be suitably used as a fiber material for summer. it can.

Hereinafter, a fiber cloth according to an embodiment of the present invention will be described.
The fiber structure of the present invention comprises a polymer of a monomer having two or more double bonds capable of radical polymerization attached to the surface of a polyacetal fiber.
In addition, when the polymer of a monomer having two or more double bonds capable of radical polymerization of the present embodiment is attached to the surface of a polyacetal fiber, it means having two or more double bonds capable of radical polymerization. The monomer is attached to the surface of the polyacetal fiber, and then a monomer having two or more double bonds capable of radical polymerization is reacted,
1. 1. A compound in which monomers having two or more double bonds capable of radical polymerization are polymerized to form a film on the fiber surface. 2. A monomer having two or more double bonds capable of radical polymerization and/or a compound obtained by polymerizing the monomers is graft-polymerized with a polyacetal resin constituting a fiber. It includes a mixture of the above items 1 and 2. That is, if a polymer of a monomer having two or more double bonds capable of radical polymerization is attached to the surface of a polyacetal fiber, a monomer having two or more double bonds capable of radical polymerization is obtained. The polymerized compound may be physically attached or may be chemically bound and attached to the fiber surface.

The polymer of the attached monomer having two or more double bonds capable of radical polymerization may penetrate from the surface to the inside of the polyacetal fiber.
Further, a polymer of a monomer having two or more double bonds capable of radical polymerization is not only a homopolymer of a monomer having two or more double bonds capable of radical polymerization, but also a radical polymerization with other compounds. It may be a copolymer obtained by copolymerizing a monomer having two or more possible double bonds.

Polyacetal fibers are used for the fiber structure of the present embodiment. Polyacetal is a general term for polyoxymethylene or a copolymerized polymer containing polyoxymethylene as a main component with ethylene oxide, and means a fiber obtained by using this as a raw material. Since polyoxymethylene has a relatively high melting point of about 178° C. (about 170° C. for copolymerized polymers), has high crystallinity, has a low glass transition temperature and high impact strength, injection molded products are recommended. It is a polymer that is widely used mainly as an engineering plastic. Further, polyacetal fibers are used in fiber reinforced plastics. As demonstrated in the examples below, the present inventors have surprisingly discovered that by attaching a specific polymer to such a polyacetal fiber, a specifically high contact cooling sensation can be obtained. The present invention has been completed.

As the polyacetal fiber, any fiber can be used, for example, a polyacetal fiber having a melt viscosity of 100 to 500 as described in JP-A-8-113823, and as described in JP-A-2008-138326. Polyacetal fibers that suppress the amount of formaldehyde containing hydrazide, polyacetal fibers containing polylactic acid as described in JP 2003-268627 A and WO 2009/145193 are mentioned, but are not particularly limited. It is not something that will be done.

Further, the fiber structure of the present embodiment, as long as the intended effect is not impaired, may be a composite of polyacetal-based fibers with other fibers, such as polyester, nylon, acrylic, polyurethane, aramid synthesis. Fibers, recycled fibers such as rayon, bamboo fibers, soy protein fibers, semi-synthetic fibers such as triacetate and diacetate, natural fibers such as cotton, hemp, silk, wool, etc. However, in the case of a fiber cloth, it may be a combination of a plurality of other fibers such as interwoven and interwoven with the other fibers, and is not particularly limited. Further, carbon fibers, antistatic yarns, etc. may be combined. Further, it is preferable to use a fiber having a core-sheath structure and a polyacetal fiber for the sheath, from the viewpoint of cool contact feeling.

Further, the shape of the fiber is not limited to the round shape, the triangular shape, the star shape, the flat shape, the C shape, the hollow shape, the well shape, the dock bone and the like. From the viewpoint of washing durability, the fiber is preferably a modified cross-section yarn, and preferably a modified cross-section yarn having a recess such as a trilobal cross section, an octalobal cross section, or a multi-lobal cross section.

Further, the fiber structure of the present embodiment, as long as the intended effect is not impaired, dyeing, printing, water repellent processing, deodorant processing, heat retention processing, ultraviolet shielding processing, softening processing, antistatic processing, antibacterial processing, antibacterial, absorption. It may be subjected to moisture release processing or the like. In addition, in order to impart waterproofness and moisture-permeable waterproofness, or to obtain synthetic leather, a thickness of 3 μm is provided on a part of the surface of the fiber structure of this embodiment, for example, on one side of the fiber cloth that does not come into contact with the skin. A resin film having a thickness of about 1000 μm may be separately laminated.

The monomer having two or more double bonds capable of radical polymerization of the present embodiment is preferably a divinyl monomer, more preferably a good contact cooling sensation evaluation value q-max (hereinafter, q-max) for polyacetal, From the viewpoint of imparting water absorption, antistatic property, moisture absorption/release property, stain removability, etc., hydrophilic divinyl monomer is preferable. Examples of hydrophilic divinyl monomers include divinyl monomers having an oxyethylene group.
More specifically, a divinyl monomer represented by the general formula [I] can be mentioned.

From the viewpoint of softening the texture of the obtained fiber structure, the divinyl monomer is preferably polyethylene glycol di(meth)acrylate, and the lower limit of m is preferably 9 or more, more preferably 15 or more, and even more preferably It is preferably 20 or more. On the other hand, the upper limit of m is preferably 30 or less, more preferably 25 or less. Such hydrophilic divinyl monomers are commercially available, for example, 1G, 2G, 3G, 4G, 9G, 14G, 23G, A-200, A-400, A-600 and A manufactured by Shin Nakamura Chemical Co., Ltd. -1000, etc. can be used.

In addition, as the monomer having two or more double bonds capable of radical polymerization, only one kind may be used, or two or more kinds may be used in combination.
A polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization on the surface of the fiber is preferable from the viewpoint of washing durability. In this case, the fiber and the above-mentioned monomer may be polymerized to form a polymer (grafted), and the fiber and the above-mentioned monomer may not be polymerized, and a polymer of the monomers forms a resin film on the surface of the fiber. Or both of these forms may be present.
By attaching a monomer having two or more double bonds capable of radical polymerization to the surface of the polyacetal fiber and polymerizing the same, the value of q-max becomes large, and when the fiber structure is touched. It is possible to obtain a product which is excellent in cold sensation when it feels cold and which is excellent in washing durability.

In addition to a monomer having two or more double bonds capable of radical polymerization, a vinyl sulfonic acid monomer may be used in combination. The vinyl sulfonic acid monomer is not particularly limited, but specific examples of vinyl sulfonic acid include 2-acrylamido-2-methylpropanesulfonic acid, sodium 2-acrylamido-2-methylpropanesulfonic acid, and 2-arioxy. 2-Hydroxypropane sulfonic acid, sodium styrene sulfonate, sodium isoprene sulfonate, sulfoethyl methacrylate, sodium allyl sulfonate, sodium methallyl sulfonate and the like can be mentioned.
In the present embodiment, it is no problem to use two or more kinds of these monomers. In particular, from the viewpoint of polymerization efficiency and moisture absorption/desorption, it is preferable to use 2-acrylamido-2-methylpropanesulfonic acid or sodium 2-acrylamido-2-methylpropanesulfonic acid.

In order to obtain a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization, from the viewpoint of accelerating the polymerization and improving the durability such as washing, a carbodiimide group, an aziridine group (ethylene At least one compound selected from the group including a monomer or polymer compound containing two or more polymerizable functional groups such as an imine group) and an oxazoline group may be used in combination for polymerization. Further, methylol melamine or melamine resin may be used.
Examples of the compound having a carbodiimide group include a crosslinking agent having a carbodiimide group represented by -N=C=N- as a functional group. For example, Carbodilite V-01 (also having an isocyanate group), Carbodilite V-02 or V-02-L2 (giving a hydrophilic segment) manufactured by Nisshinbo Chemical Co., Ltd., Carbodilite V-03, Carbodilite V-04 (hydrophilic segment). Addition), Carbodilite V-05 or V-05-02 (having an isocyanate group), Carbodilite V-06 (giving a hydrophilic segment), and the like, and particularly preferably Carbodilite V-05-02 can be used. ..
As those having an aziridine group, the following structural formulas (1) to (5) and the like can be mentioned. For example, Nippon Shokubai Co., Ltd.'s Chemitite (trademark) PZ-33, DZ-22E, etc. can be used. Moreover, Epomin (trademark) of Nippon Shokubai Co., Ltd. is mentioned as what has another aziridine group, and Epomin RP-18W, a primary, a secondary as an isocyanate modified polyethyleneimine containing a secondary and a tertiary amine. Epomine P-1000 is mentioned as an ethyleneimine containing a primary and a tertiary amine.

As a compound having an oxazoline group, Epocros WS-500, WS-700, RPS-1005 (all are trade names) and the like are commercially available as polymers.

The monomer or polymer compound containing the above monomer and a carbodiimide group, an aziridine group (ethyleneimine group) or an oxazoline group can be used alone or in combination of two or more kinds.

Further, other monomers having one or more polymerizable double bonds may be used in combination, and acrylic acid, methacrylic acid, hydroxyethyl methacrylate, acrylonitrile, sodium styrenesulfonate, glycidyl methacrylate, acrylamide, vinylpyridine, vinylpyrrolidone. And so on.

The amount of the polymer of the monomer having two or more double bonds capable of radical polymerization attached to the polyacetal fiber is preferably 0.1% by mass to 50% by mass with respect to the mass of the polyacetal fiber. More preferably, it is 0.5% by mass to 25% by mass. If it is less than 0.1% by mass, it may not be possible to obtain a sufficient contact cooling sensation, and if it exceeds 50% by mass, the texture of the fiber structure becomes too hard, and the use of the obtained fiber structure is limited. There is a risk. However, as a summer fiber structure, if you want to feel sharp, hard to the touch, or feel, add 25% by mass or more of a polymer of monomers having two or more double bonds capable of radical polymerization to polyacetal fibers. You may let me. In addition, when the amount of the polymer attached is viewed as the coverage of the surface of the polyacetal fiber, in order to obtain the desired effect, it is generally 40% or more, preferably 70% or more, more preferably 90% or more of the fiber surface area. Should be covered. It is preferably 100% covered. In the case of a woven fabric such as a woven fabric, a knitted fabric, or a non-woven fabric, at least 50% or more, preferably 80% or more, and more preferably 95% or more of one side that touches human skin is preferably covered.

Further, the fibrous structure of the present embodiment is preferable, because q-max, which represents the degree of cool contact feeling, is 0.20 W/cm ² or more, because a cool feeling can be felt when contacting. It should be noted that the larger the value of q-max, the greater the cooling sensation when touching the skin.
The fibrous structure of the present embodiment in which a polymer of a monomer having two or more double bonds capable of radical polymerization is attached to the surface of a polyacetal fiber has a significantly improved q-max and improved contact cooling sensation. To do.
The q-max of the polyacetal fiber varies depending on the yarn usage and the form of the fiber structure, but after the polymer of the monomer having two or more double bonds capable of radical polymerization is attached to the surface of the polyacetal fiber. The fibrous structure preferably has q-max increased by 0.02 W/cm ² or more, and more preferably increased by 0.05 W/cm ² or more.

Moreover, when the q-max after 20 times of washing according to JIS L0217 103 method is 0.20 W/cm ² or more, the fiber structure of the present embodiment has the contact cooling sensation having the washing durability. ,preferable.

Further, the fiber structure of the present embodiment includes yarn, cotton (cotton), woven fabric, knitted fabric, non-woven fabric, synthetic leather, artificial leather, and blouses, shirts, polo shirts, pants, skirts, underwear, jackets obtained from these. General clothing such as coats, gloves, hats, and feathers, sportswear such as windbreakers, swimwear, judo wear, running wear, etc.-general work clothes, special work clothes such as fire fighting clothes, medical workers such as lab coats and the like. Clothes such as uniforms for workers, shoes, insoles, sheets, duvet covers, duvet side, sleeping bags, pillows, pillow covers, upholstery, chair covers, curtains, car interior materials, bags, tents, curtains, It can be used for various fiber structures such as towels, mats, brush cases, laundry bags, and the like. It is possible to provide a fiber structure having excellent contact cooling feeling and excellent washing durability. Further, it is also excellent in air permeability unless a resin film is separately provided.

Next, a method for manufacturing the fiber structure of the present embodiment will be described. The present invention is not limited to the following manufacturing method. Further, some of the matters described above are omitted.
The method for producing a fiber structure of the present invention comprises a step of applying a treatment liquid containing a monomer having two or more double bonds capable of radical polymerization to the surface of the polyacetal fiber, and the monomer on the surface of the fiber. And a polymerization step of polymerizing.

The method for producing a fiber structure of the present embodiment has a step of applying a treatment liquid containing a monomer having two or more double bonds capable of radical polymerization to the surface of the polyacetal fiber.
The polyacetal fiber and the monomer having two or more double bonds capable of radical polymerization are as described above.
The concentration of the monomer having two or more double bonds capable of radical polymerization in the treatment liquid varies depending on the constitution of the fiber structure, but from the viewpoint of not impairing the texture of the obtained fiber structure, 50% by mass The following is preferable, more preferably 30% by mass or less, and further preferably 20% by mass or less. From the viewpoint of imparting sufficient contact cooling sensation, the concentration of the monomer having two or more double bonds capable of radical polymerization in the treatment liquid is preferably 1% by mass or more.

In addition, at least one compound selected from the group including a monomer or a polymer compound containing two or more polymerizable functional groups including the vinyl sulfonic acid monomer, carbodiimide group, aziridine group, ethyleneimine group, and oxazoline group, which can be polymerized. A monomer having one or more double bonds may be similarly contained in the treatment liquid.
In addition to the above, a catalyst, a polymerization initiator, a light stabilizer, an antioxidant, a surfactant and the like may be added to the treatment liquid within a range not departing from the purpose of the present embodiment.
When a radical polymerization initiator is used, for example, an inorganic polymerization initiator such as ammonium persulfate, potassium persulfate, hydrogen peroxide, 2,2′-3azobis(2-amidinopropane)dihydrochloride, or 2 , 2′-3azobis(N,N′-dimethyleneisobutyramidin)dihydrochloride, 2-(carbamoylazo)isobutylnitrile, and other organic polymerization initiators can be used. Further, a water-insoluble polymerization initiator such as benzoyl peroxide or azobisisobutylnitrile may be emulsified with a surfactant such as anion or nonion before use. Further, a redox type polymerization initiator may be used.
In addition, the treatment liquid used in the present embodiment has a pH value such as a dye, a water repellent, an antistatic agent, a softening agent, a flame retardant, an antibacterial agent, an acid, an alkali, a buffer agent, etc. within a range not departing from the purpose of the present embodiment. You may add other compounds, such as a regulator.
Water or an organic solvent may be used as a solvent for the treatment liquid, or a mixture of water and an organic solvent may be used. The treatment liquid may be one in which the above various compounds are dissolved in a solvent, or may be a dispersion liquid or an emulsion liquid in which the various compounds are dispersed and emulsified in the solvent.

The method for applying the treatment liquid to the fibers may be the treatment liquid applied to the fibers, and is not particularly limited, such as a padding method, a spray method, a dipping method, and a coating method.
The shape of the material using fibers when applying the treatment liquid is yarn, cotton (cotton), woven fabric, knitted fabric, non-woven fabric, synthetic leather, artificial leather, clothes, gloves, hats, special clothing for exercise, lining, shoes, shoes. Examples include insoles, bags, tents, curtains, sheets, duvet covers, duvet sides, mattresses, towels, mats, pencil cases, laundry bags, etc., but are not particularly limited as long as they use fibers. Absent.
In the case of yarn, raw yarn, twisted yarn, false twist yarn, air entangled yarn and the like are not particularly limited.
From the viewpoint of processing stability, fiber cloth such as woven fabric, knitted fabric and non-woven fabric is preferable.
The fiber structure of the present embodiment may be knitted, woven, sewn, laminated, or the like after applying the treatment liquid, and may have various forms as described above.

The method for producing a fiber cloth according to the present embodiment includes a polymerization step of polymerizing a monomer having two or more double bonds capable of radical polymerization.
After applying the treatment liquid to the fibers, in order to polymerize the above-mentioned monomer and attach it to the surface of the fibers, it is preferable to use any means used for radical polymerization in order to impart particularly durability. For example, dry heat treatment, steam treatment, dipping method, cold batch method, microwave treatment, ultraviolet treatment, electron beam treatment and the like can be used. These means may be applied alone, or in order to increase heating efficiency, for example, microwave treatment, or ultraviolet treatment or electron beam treatment is used at the same time as or before and after steam treatment or dry heat treatment. You may. Since the presence of oxygen in the air makes it difficult to proceed with the polymerization, in the case of dry heat treatment, microwave treatment, ultraviolet treatment or electron beam treatment, it is preferable to carry out the treatment in an inert gas atmosphere. Also in this case, it is preferable to seal with a sealing material.

Among these methods, steam treatment is preferable from the viewpoint of polymerization efficiency and treatment stability. The steam treatment may be any one of normal pressure steam, superheated steam and high pressure steam, but from the viewpoint of cost, normal pressure steam and superheated steam are preferable. The steam treatment temperature is preferably 80 to 180°C, more preferably 100 to 150°C. The steam treatment time may be about 1 to 90 minutes. In the present invention, the fibers to which the treatment liquid is applied may be air-dried or pre-dried by a drier or the like before the steam treatment or the like.

After passing through the above-mentioned polymerization step, soaping treatment may be carried out if necessary to remove unfixed components contained in the treatment liquid. The soaping may be water only, but may also contain an alkali agent, a surfactant and the like. Further, cold water or warm water of about 40 to 90°C may be used.
Further, the treatment liquid may be applied plural times, for example, application of the treatment liquid, steam treatment, soaping, drying, application of the treatment liquid, steam treatment, soaping, and drying may be repeated.
Further, calendar processing, tumbler processing, finishing set, etc. may be performed.
By the manufacturing method of the present invention,
A polymer containing a monomer having two or more double bonds capable of radical polymerization forms a film on the fiber surface, and/or the monomer or its polymer and the polyacetal resin constituting the fiber are polymerized or chemically bonded. As a result, the polymer adheres to the fiber surface and in some cases penetrates into at least a part of the fiber interior.

Further, the fiber structure of the present embodiment, before or after applying the treatment liquid on the fiber surface, dyeing processing, textile printing processing, water repellent processing, antistatic processing, softening processing, antibacterial deodorization processing, antibacterial processing , SR processing, hydrophilic processing, flameproof processing and the like may be performed. Also, a resin film obtained from urethane resin, acrylic resin, silicone resin, polyester resin, nylon resin, polytetrafluoroethylene resin, or the like is applied to a textile fabric such as a woven fabric, a knitted fabric, or a non-woven fabric to make synthetic leather or waterproof ( A fiber cloth may be provided with moisture permeability and waterproof property as required.

In addition, the garment of the present invention includes the above-mentioned fiber structure in at least a part thereof. As clothes, general clothes such as blouses, shirts, polo shirts, pants, skirts, underwear, jackets, coats, gloves, hats, and feathers, windbreakers, swimwear, judo wear, running wear and other sportswear and general work clothes. , Special work clothes such as fire fighting clothes, uniforms such as lab coats for medical workers such as white coats, and the like.
Further, the shoes, insoles, sheets, duvet cover, duvet side, mattress, sleeping bag, pillow, pillow cover, upholstery, chair cover, curtain, car interior material, bag, tent, curtain, towel, mat of the present invention. A pencil case or a laundry bag contains the above-mentioned fiber structure at least in part.
The clothes, shoes, insoles, sheets, duvet cover, duvet side, mattress, sleeping bag, pillow, pillow cover, upholstery, chair cover, curtain, car interior material, bag, tent, curtain, towel, mat of the present invention Since the pencil case or the laundry bag contains the fiber structure of the present invention in at least a part thereof, it is possible to feel a cold sensation when the fiber structure touches the skin, and to feel it even in a hot season.

Hereinafter, the present embodiment will be described in detail with reference to examples, but the present invention is not limited to the following description.
Various physical properties in the present invention were measured by the following methods.
(1) Contact cooling sensation evaluation value q-max (W/cm ² ).
It was measured using a thermo-lab II manufactured by Kato Tech Co., Ltd. with a heater temperature of 40° C. and a measuring pedestal using styrofoam. The measurement environment was 20° C. and 65% RH.
(2) Cold sensation of touch The cold sensation was evaluated by touching the fiber fabric with the hand.
(3) Washing process 20 times of washing (20HL)
It was performed according to JIS L0217 103 method. That is, when washing is performed for 5 minutes in a washing liquid containing a detergent and then rinsed for 2 minutes with water being rinsed twice, this operation is repeated 20 times. It was hung and dried only once. In this case, the synthetic detergent for washing uses Attack High Activity Bio-EX manufactured by Kao Co., Ltd. at 1 g/l, and the washing machine is National Matsushita Electric Industrial Co., Ltd. (now Panasonic Co., Ltd.) National fully automatic electric washing machine NA. -F50Y2 was used. After the drying, heat treatment such as dry iron finishing was not performed.
(4) Texture The texture was evaluated by touching the fiber fabric with the hand.

(Examples 1 to 4)
The knitted fabric (smooth polyacetal fiber. Thread 150 decitex, 60 filaments, density course 59/2.54 cm, well 61/2.54 cm.) was washed with hot water and then set at 150°C.
Next, the treatment liquid described in Examples 1 to 4 in Table 1 was applied to the above knitted fabric by the padding method. The pickup was 50% by mass.
Subsequently, a treatment (polymerization) was carried out for 20 minutes in an atmospheric pressure steamer at 105°C. Next, it was washed with hot water at 70° C., dried at 120° C., and finish-set at 160° C. to obtain a fiber structure (knit).
The performance of the obtained fiber structure (knit) is shown in Table 1.

(Comparative Example 1)
A set fibrous structure (knit) was obtained by washing with hot water in the same manner as in Example 1 except that the treatment with the treatment liquid was not performed.
The performance of the obtained fiber structure (knit) is shown in Table 1.

(Comparative example 2)
The knitted fabric (smooth. 6-nylon fiber. Thread 155 decitex, 34 filaments, density course 59/2.54 cm, well 61/2.54 cm.) was washed with hot water, and then set at 150° C. to set the fiber structure (knitted fabric). ) Got.
The performance of the obtained fiber structure (knit) is shown in Table 1.

(Comparative example 3)
The treatment liquid described in Comparative Example 3 in Table 1 was applied to the fiber structure obtained in Comparative Example 2 by the padding method. The pickup was 50% by mass.

Subsequently, a treatment (polymerization) was carried out for 20 minutes in an atmospheric pressure steamer at 105°C. Next, it was washed with hot water at 70° C., dried at 120° C., and finish-set at 160° C. to obtain a fiber structure (knit).
The performance of the obtained fiber structure (knit) is shown in Table 1.

The fiber structure in which the polymer of the monomer having two or more double bonds capable of radical polymerization described in Examples 1 to 4 is attached to the surface of the polyacetal fiber has such a polymer attached. Q-max is improved by 0.06 W/cm ² or more as compared with the case where there is none (Comparative Example 1), and the same processing is applied to nylon fibers (Comparative Example 2→Comparative Example 3; improvement range 0). Compared with 0.03 W/cm ² ), the improvement range of q-max was twice or more. That is, it was confirmed that there is a synergistic effect peculiar to the combination of the polymer according to the present invention and the polyacetal fiber.
In addition, when touched with the hands, the fiber structures of Examples 1 to 4 were felt to be much colder than Comparative Example 3 using nylon having substantially the same q-max, and the fibrous structures of the above-described values obtained with q-max were more than those obtained. It was confirmed to have a cool contact feeling.
Furthermore, it was confirmed that the fiber cloths of Examples 1 to 4 maintain q-max and the cold feeling to the touch even after washing, and it was found that they have washing durability.

The fiber cloth of the present invention has excellent contact cooling sensation performance, and can be used for general clothing such as underwear, blouses, shirts, work clothes, dresses, and the like. Widely used for various things such as pillows and futon side cloths, sleeping bags, shoes, chairs, vehicle interior materials, running wear used as sportswear, windbreakers, baseball uniforms, clothing such as judogi etc. can do.

Claims (8)

A fiber structure in which a polymer of a divinyl monomer having an oxyethylene group is attached to the surface of a polyacetal fiber. The fibrous structure according to claim 1, wherein the contact cooling sensation evaluation value q-max is 0.20 W/cm ² or more. The fibrous structure according to claim 2, wherein a contact cooling sensation evaluation value q-max after 20 washes according to JIS L0217 103 method is 0.20 W/cm ² or more. Said polymer all SANYO obtained by polymerizing and crosslinking agent divinyl monomer having an oxyethylene group, the crosslinking agent is a compound having a carbodiimide group, ethyleneimine group, or oxazoline group, methylol melamine, and of a melamine resin The fiber structure according to any one of claims 1 to 3, which is at least one . The fiber structure according to claim 4 , wherein the cross-linking agent is a compound having a carbodiimide group. Clothes used at least in part fibrous structure according to any one of claims 1-5. Shoes used for at least part of the fiber structure according to any one of claims 1 to 5 insoles, sheets, futon covers, futon side, futon mattresses, sleeping bags, pillows, pillow covers, chair An article selected from the group consisting of upholstery, chair covers, curtains, car interior materials, bags, tents, curtains, towels, mats and pencil cases. The fiber structure according to claim 1, comprising a step of applying a treatment liquid containing a divinyl monomer having an oxyethylene group to the surface of the polyacetal fiber, and a polymerization step of polymerizing the monomer on the surface of the fiber. Production method.