KR101138567B1 - Filler-fixed fiber, fiber structure, molded fiber, and processes for producing these - Google Patents

Abstract

The filler fixing fiber of this invention is a filler fixing fiber containing the fiber 2, the binder resin 1 on the surface, and the filler 3 fixed to the said binder resin 1, The said binder resin (1) ) Is a wet heat gelling resin which gels by heating in the presence of water, and the filler 3 is fixed by gelation in which the wet heat gelling resin is gelled. Thereby, the fiber 2 exhibits the function of a binder which fixes the filler 3 by gelatinizing the wet heat-gelling resin, maintaining the form of the fiber.

Description

Filler Bonded Fibers, Fiber Structures, Fiber Molded Articles, and Methods for Making them {FILLER-FIXED FIBER, FIBER STRUCTURE, MOLDED FIBER, AND PROCESSES FOR PRODUCING THESE}

TECHNICAL FIELD The present invention relates to a filler fixing fiber, a fiber structure, a fiber molded article, and a method for producing the same, wherein the filler is fixed to the fiber surface.

Conventionally, as a method of attaching a filler to the surface of a fiber, after the particle | grains are supported by the dry method on the surface of a nonwoven fabric, the method of attaching particle | grains by heating at the temperature more than the softening point of a fiber is proposed (following patent document 1). Moreover, after impregnating and crimping a sheet-like or block fiber molded product in an aqueous dispersion solution containing particles, a method of adhering the particles by heating to a temperature not exceeding 60 ° C. above the melting point or melting point of the fiber is proposed (the following patent document) 2).

And conventionally, the fiber product which stuck the filler to the fiber surface is used for various uses. For example, filament fibers (dental floss) for wiping between teeth are generally well known as fibers and fabrics for polishing and cleaning purposes. In addition, as industrial applications, polishing cloths or abrasive papers are used in various fields such as lenses, semiconductors, metals, plastics, ceramics, and glass. Moreover, the abrasive cloth is used also for kitchens for home use or a business use.

In addition, since the occurrence of allergic symptoms such as Seek syndrome due to inhalation of volatile organic compounds (hereinafter abbreviated as VOC) increases, a gas adsorbent for adsorbing harmful gases such as VOC gas is desired. As the gas adsorption material, for example, Patent Document 3 proposes a gas adsorption sheet having an adsorption effect on the entire VOC gas. In the gas adsorption sheet proposed in Patent Document 3, the activated carbon particles are sandwiched and fixed between two sheet materials, and the adsorbent particles are fixed to at least one of the sheet materials. As a method of immobilizing the adsorbent particles, (1) a method of mixing adsorbent particles in a binder resin solution and coating the sheet material on one side, and stacking the other sheet material thereon, or (2) hot-melting on one sheet material in advance. The method etc. which coat an agent etc., scatter adsorbent particle on it, and superimpose the other sheet | seat material on it are illustrated.

In addition, various water purification materials using fibrous activated carbon, that is, activated carbon fibers, have been proposed as water purification materials for purifying plant wastewater and the like (for example, Patent Document 4). However, in the water purification material using activated carbon fibers, there is a fear that the activated carbon constituting the activated carbon fibers may fall off during use and the purification performance may deteriorate. Moreover, there exists a possibility that the activated carbon which fell out in the liquid after purification may mix. On the other hand, Patent Document 5 proposes a water purification filter in which organic material adsorptive particles such as activated carbon particles are fixed to a sheet-like member through an insoluble binder.

In addition, as a fiber product having a filler attached to a fiber surface, there is one having a form of a fiber molded article. For example, there has been proposed a method for producing a fiber molded article in which particles and binder resins are mixed with a fiber material to form a fleece, a non-woven mat fused with a binder resin, and then press molded into a predetermined shape. (Patent Document 6) below. Moreover, the three-dimensional molded object which shape | molded the functional fiber sheet which consists of a plant fiber, a heat-sealing fiber, and a powdery or fibrous functional material by thermoforming is proposed (patent document 7).

[Patent Document 1] Japanese Patent Application Laid-Open No. 7-268767

[Patent Document 2] Japanese Patent Publication No. 51-22557

[Patent Document 3] Japanese Patent Application Laid-Open No. 2000-246827

[Patent Document 4] Japanese Patent Application Laid-Open No. 9-234365

[Patent Document 5] Japanese Patent Application Laid-Open No. 9-201583

[Patent Document 6] Japanese Patent Application Laid-Open No. 9-254264

[Patent Document 7] Japanese Patent Application Laid-Open No. 2004-52116

However, when the fibers are heated to a temperature equal to or higher than the softening point or melting point, as described in Patent Documents 1 and 2, the fibers shrink and become hard, and at the softening point, the particles cannot be effectively adhered to the fibers, and they need to be at the temperature higher than the melting point. There is also a problem that the fiber form cannot be maintained in this way. In addition, the fibers shrink and become hard, and furthermore, when the nonwoven fabric is formed, there is a problem in that the nonwoven fabric cannot be maintained with shrinkage.

In addition, in the method of immobilization of (1) in the gas adsorption sheet proposed in the Patent Document 3, the adsorbent particles may be buried in the binder resin solution, so that a sufficient gas adsorption effect may not be obtained. In the immobilization method of (2), since the contact area between the hot melt agent and the adsorbent particles is small, the adsorbent particles may fall off. In addition, the gas adsorption sheet proposed in Patent Document 4 uses a porous sheet material in at least one of the two sheet materials in order to increase air permeability, but when the activated carbon particles are sandwiched between the two sheet materials, the activated carbon particles It is necessary to make the particle diameter of activated carbon particle | grains larger than the maximum pore diameter of a porous sheet material so that it may not fall. Therefore, as the activated carbon particles, those having a particle size of 100 µm to 1000 µm are used, and since the specific surface area of the activated carbon particles is small, sufficient gas adsorption effect may not be obtained.

In the water purification filter proposed in the above Patent Document 5, the organic material adsorbent particles are buried in the binder, so that the specific surface area of the organic material adsorbent particles is reduced, and sufficient purification performance may not be obtained.

Since the molded article proposed in the said patent document 6 mixes particle | grains and binder resin previously, and adheres particle | grains to a fiber surface, there exists a problem that particle | grains are buried in binder resin and cannot fully exhibit the function which a particle has. In addition, the patent document 7 was tested to melt the heat-sealable fibers to fix the particulate functional material. In the above method, the particles cannot be fixed unless the heat-sealable fibers are melted at a considerably high temperature. It may be accompanied by shrinkage, and it may be difficult to obtain a uniform molded body. Moreover, it may be difficult to produce the molded object of deep drawing.

SUMMARY OF THE INVENTION The present invention provides a filler fixing fiber in which a filler is effectively fixed to a fiber surface while maintaining the properties of the original fiber to prevent the conventional problem, and prevents the peeling of the filler fixed to the fiber surface. To provide a fiber structure useful for abrasives, gas adsorbents, water purifiers, etc., capable of suppressing the reduction of the specific surface area of the filler, and to effectively adhere the filler to the fiber surface, to uniform molding, and to the shape of the deep drawing. The present invention provides a fiber molded article and a method for producing the same, which can provide a low cost and can reduce the molding cost in general use.

The filler fixing fiber of the present invention is a filler fixing fiber comprising a fiber, a binder resin on the surface thereof, and a filler fixed to the binder resin, wherein the binder resin is a wet heat gelling resin that is gelled by heating in the presence of water. The filler is characterized in that the wet heat gelling resin is fixed by gelling gelation.

The fiber structure of this invention is a fiber structure containing fiber, the filler fixing fiber containing the binder resin on the surface, and the filler fixed to the said binder resin, The binder resin is a wet heat gelation which gelatinizes by heating in presence of water. It is a resin, The said filler is characterized in that the wet heat gelling resin is fixed by a gelled gelling.

The fiber molded article of the present invention is a fiber molded article formed by forming a fiber structure comprising fibers, a binder resin on the surface thereof, and filler fixing fibers fixed to the binder resin, wherein the binder resin is gelled by heating in the presence of moisture. And a moist heat gelling resin, wherein the fiber structure is formed into a predetermined shape with the fiber being fixed by a gel product obtained by wet moist gelling of the moist heat gelling resin.

The manufacturing method of the filler fixing fiber of this invention is a manufacturing method of the filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, Comprising: The said fiber and the said binder resin are heated in presence of water. It is a wet heat gelling fiber which is gelled by gelation, and the filler dispersion solution in which the filler is dispersed in the solution is applied to the wet heat gelling fiber, and then the wet heat gelling fiber is wet heat treated in a moist heat atmosphere to gel the wet heat gelling fiber and gel The filler is characterized in that the filler is fixed to the surface of the fiber.

Another manufacturing method of the filler fixing fiber of this invention is a manufacturing method of the filler fixing fiber containing a fiber, the binder resin on the surface, and the filler fixed to the said binder resin, Comprising: The said fiber and the said binder resin are different from the other fiber. It is a moist heat gelling resin, and after imparting the moist heat gelling resin to the other fibers, a filler is imparted, or a filler dispersion solution obtained by dispersing the filler and the moist heat gelling resin in a solution is applied to the other fibers, followed by moist heat in a moist heat atmosphere. Treatment to gel the moist heat gelling resin, and fix the filler to other fiber surfaces by gelling.

The manufacturing method of the fiber structure of this invention is a manufacturing method of the fiber structure containing the fiber, the filler fixing fiber containing the binder resin of the surface, and the filler fixed to the said binder resin, The said binder resin exists in water presence. It is a wet heat gelation resin gelled by heating, the fiber and the binder resin

(I) a composite fiber comprising a moist heat gelling resin fiber component and another thermoplastic synthetic fiber component,

(II) a mixture of the composite fiber and another fiber,

(III) a mixture of the composite fiber and a wet heat gelation resin, and

(IV) Mixing moist heat gelling resin with other fibers

At least one combination selected from the group consisting of fibrous structures made of the fibers and the binder resin, and imparting a filler dispersion solution in which the fillers are dispersed in the solution to the fibrous structure, and then the moist heat gelling resin in a moist heat atmosphere. The wet heat treatment gelizes the moist heat gelling resin, and the filler is fixed to the fiber surface by gelling to form a filler fixing fiber.

The manufacturing method of the fiber molded object of this invention is a manufacturing method of the fiber molded object by which the fiber structure containing a fiber, the binder resin of the surface, and the filler fixed fiber adhered to the said binder resin is shape | molded, The said binder resin is a moisture | moisture content. It comprises a wet heat gelling resin gelling by heating in the presence, to form a fiber structure comprising the fiber and the binder resin, and to wet-wet heat processing by moist heat gelling the fibrous structure in a moist heat atmosphere in a mold It features.

1A to 1C are cross-sectional views of filler fixing fibers in one embodiment of the present invention.

It is sectional drawing of the nonwoven fabric of three-layered structure in one Embodiment of this invention.

3 is an exemplary process diagram of the manufacturing method of the present invention.

4A is a scanning electron micrograph (magnification 100) showing a nonwoven fabric obtained in Example 1 of the present invention.

4B is a scanning electron microscope cross-sectional photograph (magnification 100) showing a nonwoven fabric obtained in Example 1 of the present invention.

4C is an enlarged photograph of the fiber surface (magnification 100) of the nonwoven fabric surface obtained in Example 1 of the present invention.

4D is a scanning electron micrograph (magnification 100) showing a nonwoven fabric of another portion obtained in Example 1 of the present invention.

Fig. 4E is a scanning electron microscope cross-sectional photograph (magnification 100) showing a nonwoven fabric of another portion obtained in Example 1 of the present invention.

4F is an enlarged photograph (fiber scale 1000) of the fiber surface of the nonwoven fabric surface of another portion obtained in Example 1 of the present invention.

Fig. 5A is a scanning electron micrograph (magnification 100) showing a nonwoven fabric obtained in Example 6 of the present invention.

Fig. 5B is a scanning electron microscope cross section (magnification 100) showing a nonwoven fabric obtained in Example 6 of the present invention.

5C is an enlarged photograph (fiber scale 1000) of the fiber surface of the nonwoven fabric surface obtained in Example 6 of the present invention.

6 is a schematic perspective view of the water circulation simplified tester.

7 is an exemplary process chart of imparting moisture to a nonwoven fabric in one embodiment of the present invention.

It is a perspective view of the fiber molded object (mask) in one Embodiment of this invention.

It is a perspective view of the fiber molded object (pleats processed product of an air cleaner filter) in one Embodiment of this invention.

10 is a flowchart of another embodiment of the manufacturing method of the present invention.

Fig. 11A is a scanning electron micrograph (magnification 200) showing a nonwoven fabric obtained in Example 7 of the present invention.

Fig. 11B is an enlarged photograph (fiber scale 2000) of the fiber surface of the nonwoven fabric surface obtained in Example 7 of the present invention.

1: Super ingredient (binder resin)

2 core component

3: filler

4: binder resin

5, 6, 9: composite fiber

7: Ethylene-vinyl alcohol copolymer resin (binder resin)

8: polypropylene

11: filler fastening fiber layer

12: rayon fiber layer

20: water circulation simple tester

21: stand

22a, 22b: Fixed jig

23: container

23a: opening

24: pump

24a, 24b: tube

25: small piece

26: tea pack

27: test sample

28: wire

31: fiber or nonwoven

32: tank

33: filler dispersion solution

34: drawing rolls

35: steamer

36: suction

37: heating roll

38: canvas roll for patterning

39: winder

40: mask

41: dryer

50: Pleated workpiece of air cleaner filter

In the present invention, a wet heat gelation resin is used as the binder resin to gel by heating in the presence of moisture. Examples of the moist heat gelling resin include powder, chip, and fiber. In particular, the wet heat gelation resin is preferably in the form of a fiber. As the fibrous wet heat gelling resin (hereinafter referred to as "wet heat gelling fiber"), a fiber of wet heat gelation resin alone or a composite fiber containing a wet heat gelation resin fiber component and another thermoplastic synthetic fiber component (hereinafter referred to as "wet heat gelation fiber"). Composite fibers). Thereby, the other fiber or at least another thermoplastic synthetic fiber component exhibits the function of acting as a binder to fix the filler by gelling the wet heat gelling resin while maintaining the form of the fiber. The filler is fixed by a wet heat gelled gelate of the wet heat gelled resin fiber component or the wet heat gelled resin fixed to the surface of the fiber. Preferably, the filler is exposed and fixed. Further, the wet heat gelling fibers and / or other fibers are fixed by gelling in which the wet heat gelling resin fiber component or the wet heat gelling resin fixed to the surface of the fiber is wet heat gelling.

Moreover, the fiber molded object of this invention can be shape | molded by the molded object of a predetermined shape by wet-molding in the state which gelatinized the fiber structure in a metal mold | die. Examples of the moist heat gelling resin include powder, chip, and fiber. In particular, in consideration of molding processability, it is preferable that it is a fibrous form, that is, a wet heat gelled fiber.

The gelling temperature of the wet heat gelling resin is 50 ° C or higher. More preferable gelling temperature is 80 ° C or higher. When the resin which can gel at less than 50 degreeC is used, adhesiveness to a roll, a metal mold | die, etc. becomes severe at the time of gel processing, and it becomes difficult to produce a fiber structure and a fiber molded object, or it may become impossible to use in summer or a high temperature environment. In addition, "gel processing" means the process of gelatinizing a moist heat-gelling resin.

It is preferable that the wet heat gelation resin is an ethylene-vinyl alcohol copolymer resin. This is because it can gel by moist heat and does not deteriorate other fibers and / or other thermoplastic synthetic fiber components. Ethylene-vinyl alcohol copolymer resin is resin obtained by chlorinating an ethylene-vinyl acetate copolymer resin, The chloride degree is 95% or more is preferable. More preferred degree of chloride is 98% or more. Moreover, preferable ethylene content rate is 20 mol% or more. Preferable ethylene content is 50 mol% or less. More preferable ethylene content is 25 mol% or more. More preferable ethylene content is 45 mol% or less. When the degree of chloride is less than 95%, production of the fiber structure and the fiber molded product may be difficult due to adhesion to rolls, molds, and the like during gel processing. In the case where the ethylene content is less than 20 mol%, in the same manner, production of the fiber structure and the fiber molded body may be difficult due to adhesion to a roll, a mold, or the like during gel processing. On the other hand, when the ethylene content exceeds 50 mol%, the wet heat gelation temperature increases, and the processing temperature must be raised to near the melting point, which may adversely affect the dimensional stability of the fiber structure and the fiber molded product.

As a preferable combination of the said fiber and the said binder resin,

(I) a composite fiber comprising a moist heat gelling resin fiber component and another thermoplastic synthetic fiber component,

(II) a mixture of the composite fiber and another fiber,

(III) a mixture of the composite fiber and a wet heat gelation resin, and

(IV) Mixing moist heat gelling resin with other fibers

And at least one selected from (hereinafter referred to as "form (I) to (IV)"). The said aspect (I) is a wet heat gelation composite fiber which made "binder resin" a wet heat gelation resin fiber component, and "fiber" as another thermoplastic synthetic fiber component. The said aspect (II) mixes "binder resin" as a wet heat-gelling composite fiber and "fiber" as another fiber. The said aspect (III) mixes "fiber" as a wet heat gelation composite fiber, and "binder resin" as a wet heat gelation resin. The said aspect (IV) is made into the moist heat-gelling resin (for example, the fiber of moist heat-gelling resin only) which adopts "binder resin" other than the said moist-heat-gelling composite fiber, and makes "fiber" another fiber It is a mixture.

It is preferable that the wet heat gelation composite fiber used for said aspect (I)-(III) is a composite fiber in which the wet heat gelation resin fiber component is exposed or partially divided. The complex shape is concentric, eccentric, parallel, divided, island-in-sea and the like. Concentric circles are particularly preferred because the fillers tend to stick to the fiber surface. The cross-sectional shape may be round, hollow, mold release, elliptical, molded, flat, or the like. However, the cross-sectional shape is preferably circular because of ease of fabrication. The split composite fiber is preferably partially divided by spraying a high pressure water stream or the like beforehand. In this way, the divided moist heat gelling resin fiber component is gelled by moist heat treatment, forms a gel, adheres to the surface of other fibers, and fixes the filler. That is, it functions as a binder.

It is preferable that the ratio of the wet heat gelation resin fiber component to the said wet heat gelation composite fiber exists in the range of 10 mass% g or more and 90 mass% or less. More preferable content of the moist heat-gelling resin fiber component is 30 mass% or more. More preferable content of the moist heat-gelling resin fiber component is 70 mass% or less. When content of a moist heat-gelling resin fiber component is less than 10 mass%, there exists a tendency for a filler to become difficult to adhere. When content of a wet heat gelation resin fiber component exceeds 90 mass%, there exists a tendency for the fiber formability of a composite fiber to fall.

The other thermoplastic synthetic fiber component in the wet heat gelling composite fiber may be any of polyolefin, polyester, polyamide, and the like, but is preferably polyolefin. When ethylene-vinyl alcohol copolymer resin is used as a wet heat gelation resin fiber component, it is easy to form the composite fiber (conjugate fiber) by melt spinning.

As another thermoplastic synthetic fiber component, it is preferable to use a thermoplastic synthetic fiber component having a melting point higher than the temperature at which the wet heat gelling resin fiber component is gelled. If the other thermoplastic synthetic fiber component is a thermoplastic synthetic fiber component having a melting point lower than the temperature at which the gel is formed, the other thermoplastic synthetic fiber component itself tends to melt and harden. It may become nonuniform.

The ratio of the moist heat-gelled composite fiber to the fiber structure is not particularly limited as long as it can fix the filler, but the composite fiber required for fixing the fiber by gelling and / or effectively fixing the filler The ratio of is preferably 10% by mass or more. The ratio of more preferable composite fiber is 30 mass% or more. The proportion of more preferable composite fibers is at least 50 mass%. For example, in a fiber structure, when the web containing a composite fiber exists in both surfaces, and another fiber exists inside, content in the web containing a composite fiber is shown.

In the said aspect (III), it is also possible to further contain a wet heat gelation resin in the said wet heat gelation composite fiber, and to form a gelate on the surface of a composite fiber. Thereby, the sticking effect of a filler can be improved more.

Examples of the other fibers used in Form (II) or Form (IV) include chemical fibers such as rayon, natural fibers such as cotton, hemp and wool, polyolefin resins, polyester resins, polyamide resins, acrylic resins, and poly Arbitrary materials, such as a synthetic fiber which consists of single or multiple components, such as a urethane resin, can be selected and used.

In the said aspect (IV), it is preferable to contain a wet heat gelation resin in the range of 1 mass% or more and 90 mass% or less with respect to a fiber structure. More preferable content is 3 mass% or more. More preferable content is 70 mass% or less. If the content of the moist heat gelling resin is less than 1% by mass, it is difficult to fix other fibers by gelling or it is difficult to fix the filler. When the content of the wet heat gelling resin exceeds 90% by mass, the fibrous shape may be lost to form a film, or the filler may be embedded in the gel.

The filler can be used as long as it is a particle. For example, it is preferable that it is an inorganic particle as a filler. If it is an inorganic particle, when used as an abrasive | polishing agent, it is because grinding | polishing operation is large. Examples of the inorganic particles include alumina, silica, tripoly, diamond, corundum, emery, garnet, flint, synthetic diamond, boron nitride, silicon carbide, boron carbide, chromium oxide, and cerium oxide. Iron oxide, colloidal silicate, carbon, graphite, zeolite and titanium dioxide, kaolin, clay and the like. These particles can also be mixed and used as appropriate.

In the case where the filler is gas adsorbent particles, the gas adsorbent particles are not particularly limited as long as they have a function of adsorbing gaseous substances in air, but porous particles such as activated carbon particles, zeolite, silica gel, activated clay, and layered phosphate, and porous materials thereof. Porous particles in which the chemical adsorbent is supported on the particles are preferable. Among the porous particles, activated carbon particles are particularly preferable.

In the case where the filler is an organic material adsorbent particle, the organic material adsorbent particles are not particularly limited as long as the organic material adsorbent particles have a function of adsorbing organic substances in a liquid, but porous particles such as activated carbon particles, zeolite, silica gel, activated clay, and layered phosphate, and porous particles thereof. Porous particles and the like on which an organic substance adsorbent is supported are preferable. Among the porous particles, activated carbon particles are particularly preferable.

In addition to the abrasives, gas adsorption particles and organic matter adsorption particles, for example, silica gel as a drying agent, titanium dioxide as a photocatalyst, virus adsorption / decomposing agent, antibacterial agent, deodorant, conductive agent, antistatic agent, humectant, insect repellent agent, flavourant, One or two or more functional fillers, such as a flame retardant, can be used.

It is preferable that the average particle diameter of the said filler is the range of 0.01-10000 micrometers. More preferable average particle diameter is 0.5 micrometer or more, and more preferable average particle diameter is 1 micrometer or more. More preferable average particle diameter is 80 micrometers or less. If the average particle diameter is less than 0.01 µm, the filler may be embedded in the gelled product. On the other hand, when the average particle diameter exceeds 100 µm, the specific surface area of the filler may be small, and a sufficient filler function, for example, gas adsorption effect may not be obtained.

The fiber structure includes the fiber and the binder resin. The fiber structure here refers to what was formed of fibers, such as a fiber bundle, a fiber mass, a nonwoven fabric, a woven fabric, and a net. In particular, since a nonwoven fabric has high workability, it can be applied to various uses. For example, when used as an abrasive nonwoven fabric containing a liquid in the fiber structure of the present invention, it is preferable that the filler fixing fibers are present in the form of webs on both surfaces and hydrophilic fibers are present therein. The hydrophilic fiber is preferably at least one fiber selected from rayon fibers, cotton fibers and pulp. This is because water retention is high when liquids such as water, surfactants and detergents are applied and polished.

In one embodiment of the present invention, for example, the gas adsorption material using gas adsorption particles as the filler is not limited to the nonwoven fabric, and may be a gas adsorption module including a fiber bundle formed by tying a plurality of filler fixing fibers as a gas adsorption portion. Further, the aggregate of the above-mentioned filler fixed fibers may be wound around a cylindrical shape or molded into a pleated shape as a gas adsorption filter. The water purification material using organic material adsorptive particles as the filler is not limited to the nonwoven fabric, and may be a water purification module including a fiber bundle formed by tying a plurality of filler fixing fibers as an organic material adsorption portion. Moreover, the thing which wound the aggregate of the said filler fixed fiber to cylindrical shape, and shape | molded in the pleat shape can also be used as a water purification filter.

In addition, when forming a fiber structure by a metal mold | die, it is preferable that a fiber structure is a nonwoven fabric. If it is a nonwoven fabric, manufacturing cost is low, it is easy to process, and when it contains water at the time of shaping | molding process, it stretches suitably, it is easy to follow the shape of a metal mold, and it is easy to obtain the molded object of a deep drawing.

The weight of the fiber structure is preferably 20 g / m 2 or more and 600 g / m 2 or less. Preferable thickness (when 2.94 cN / cm <2> load) of a fiber structure is 0.1 mm or more and 3 mm or less.

In order to effectively exhibit the functionality of the filler, the fiber structure preferably has a fixed amount of filler of 2 g or more per 1 m 2, more preferably 10 g or more, and particularly preferably 20 g or more.

Next, the manufacturing method of the filler fixed fiber of this invention and a fiber structure is demonstrated. The moist heat treatment in the present invention is performed in a moist heat atmosphere. The term "humid heat atmosphere" as used herein refers to a heated atmosphere containing water. The moist heat treatment refers to a process in which a filler dispersion solution comprising a filler resin, a fiber containing a moist heat gelling fiber component, or a fiber structure comprising these fibers is added with a filler dispersion solution containing a filler, and then heated. The process of heating, giving a filler dispersion solution is shown. Examples of the heating method include a method exposed in a heating atmosphere, a method of penetrating the heating air, a method of contacting a heating body, and the like.

When heating after adding the said filler dispersion solution, it is preferable that the ratio of the moisture (henceforth "water content") to give to a fiber or fiber structure in a wet heat processing is 20 mass%-800 mass%. More preferable moisture content is 30 mass% or more. More preferable moisture content is 700 mass% or less. More preferable moisture content is 40 mass% or more. More preferable moisture content is 600 mass% or less. If the moisture content is less than 20% by mass, wet heat gelation may not occur sufficiently. On the other hand, when the moisture content exceeds 800 mass%, the moist heat treatment is not uniformly performed between the surface and the inside of the fiber structure, and the degree of moist heat gelation tends to be uneven. Moreover, as a method of adding moisture, it can be performed by a well-known method, such as spraying and immersion in a water tank. In particular, the method of impregnating a filler dispersion solution into a fiber structure is preferable because it is easy to introduce many fillers into a fiber structure. The fiber or fiber structure imparted with water can be adjusted to a predetermined moisture content by a method such as pressing with a drawing roll or the like.

In the case of heating while imparting the filler dispersion solution, since the gelation of the wet heat gelling resin proceeds simultaneously with the provision of the water, the filler concentration in the filler dispersion solution and the temperature of the filler dispersion solution are adjusted to adjust the fixing amount of the filler. Just do it. Specifically, the filler can be fixed to the fiber surface by impregnating the fiber or the fiber structure in the hot water containing the filler (90 ° C. or more).

선 조사법, 포톤법, 프레임법, 불소 처리법, 그래프트 처리법 및 술폰화 처리법 등을 들 수 있다.The fiber structure before the wet heat treatment may be subjected to a hydrophilic treatment. By carrying out the hydrophilic treatment, the fiber structure can be moistened approximately evenly when the fiber structure contains hydrophobic fibers. As a result, the composite fiber is wet uniformly uniformly wetted, and the filler is likely to stick, which is preferable. As hydrophilic treatment, surfactant treatment, corona discharge method, glow discharge method, plasma treatment method, electron beam irradiation method, ultraviolet irradiation method,

And a ray irradiation method, a photon method, a frame method, a fluorine treatment method, a graft treatment method and a sulfonation treatment method.

The wet heat treatment temperature in the wet heat treatment is preferably at least the melting point of the wet heat gelling resin or the wet heat gelling resin fiber component (hereinafter also referred to as "binder resin") at a melting point of 20 ° C or lower. More preferable wet heat treatment temperature is 50 degreeC or more. More preferable wet heat treatment temperature is 80 degreeC or more. On the other hand, the more preferable wet heat treatment temperature is 30 degrees C or less of melting | fusing point of binder resin. More preferable wet heat treatment temperature is 40 degrees C or less of melting | fusing point of binder resin. When the wet heat treatment temperature is lower than the gelation temperature of the binder resin, the filler may not be effectively fixed. If the moist heat treatment temperature exceeds the melting point of the binder resin at -20 ° C, the melting temperature of the binder resin is close to that of the binder resin, so that shrinkage may occur when the fiber structure is used.

In the wet heat treatment, the surface pressure is preferably 0.01 to 0.2 MPa in contact with the heating body. The minimum of more preferable surface pressure is 0.02 Mpa. The upper limit of more preferable surface pressure is 0.08 MPa. Moreover, when a heating body is compression molding by a heat roll, it is preferable that the linear pressure of a heat roll is 10-400 N / cm. The linear pressure of a more preferable heat roll is 50 N / cm. The upper limit of the linear pressure of a more preferable heat roll is 200 N / cm. According to this method, it is possible to wet-gel the wet heat gelling resin fiber component in an instant, and to enlarge the gelled material, so that the filler can be fixed over a large area. In addition, according to this method, when wet heat gelation, the filler is pushed into the gelled material and the filler can be more firmly fixed to the fiber surface.

When the fiber structure is sublimed and / or flexible, the fiber and the web including the wet heat gelling resin may be steamed to form a gelled gelled gel of the wet heat gelling resin to fix the filler. . As a method of steam processing, the method of exhaling steam from above and / or below of a web etc., the method of exposing to steam by an autoclave etc. are mentioned, for example. According to this method, no pressure is applied to the fiber structure more than necessary during gel processing. As a result, the fiber structure can be fixed while the filler is exposed to the fiber surface while maintaining the fiber shape.

Next, the manufacturing method of the fiber molded object of this invention is demonstrated. In the present invention, the moist heat molding processing refers to a process of heating after applying a filler dispersion solution to a fiber structure, or heating while applying a filler dispersion solution, and molding into a predetermined shape. As a method of heating, the method of exposing in a heating atmosphere, the method of making it contact a heating body, etc. are mentioned. The moisture content at the time of providing a filler dispersion solution to the said fiber structure is the same as that mentioned above, and abbreviate | omits description.

In the moist heat molding processing, it is preferable to insert the fiber structure containing the filler dispersion solution into a pair of molds and to heat pressurize. When heated in a state containing water, the nonwoven fabric itself is appropriately elongated to easily follow the shape of the mold, thereby obtaining a molded article for deep drawing. When heating while giving the said filler dispersion solution, a molded object can be obtained by inserting a fiber structure in a pair of metal mold | die, and impregnating in hot water (90 degreeC or more), for example.

The moist heat forming process is carried out in a moist heat atmosphere. It is preferable that the moist heat molding processing temperature is not less than the gelation temperature of the gelling resin and not more than the melting point of -20 ° C. More preferable wet heat forming processing temperature is 50 degreeC or more. More preferred wet heat forming temperature is 80 ° C or higher. On the other hand, the more preferable wet heat forming processing temperature is 30 degrees C or less of melting | fusing point of wet heat gelation resin. More preferred wet heat forming temperature is below the melting point of the wet heat gelling resin -40 ℃. If the wet heat forming temperature is less than the gel temperature of the wet heat gelling resin, it is difficult to form a gelled product. If the wet heat forming temperature exceeds the melting point of the wet heat gelling resin at -20 ° C, the molded body may become nonuniform because it is close to the melting point of the wet heat gelling resin.

In the present invention, when wet moist gelling the moist heat gelling resin in a moist heat atmosphere, it is preferable to manufacture a fiber molded body by contact pressure molding in a mold. Here, the contact pressure forming process refers to a process in which pressure is applied to the extent that the fiber structure and the mold come into contact with each other. The contact pressure is a self-weight of the mold when the fiber structure and the mold are in close contact with each other, and is a concept including the pressure up to this point. Since the wet heat gelling resin becomes soft when gelled in a moist heat atmosphere, in the case of simple molding only, the molding pressure does not have to be as high. According to the contact pressure forming process, the fiber molded body is fixed by the gel while maintaining the form of the fiber, thereby obtaining a sublime and flexible molded body. The mold may be, for example, a light and thin mold such as a stainless steel plate, and may be a dense mesh-shaped mold.

In the present invention, when the fibrous molded body is required to be hard, or when the wet heat gelation resin is expanded and the gelled gelled body is required, it can be heat-pressurized at a pressure for producing a normal fibrous molded body.

Next, this invention is demonstrated using drawing. 1A to 1C are cross-sectional views of filler fixing fibers in one embodiment of the present invention. Fig. 1A is a composite fiber 5 containing polypropylene as a core component (2) and an ethylene-vinyl alcohol copolymer resin as the primary component (1), which has the function of a binder resin, It is an example which fixed the filler 3 in 1). FIG. 1B is a composite fiber 6 having polypropylene as the core component (2) and an ethylene-vinyl alcohol copolymer resin as the primary component (1), wherein the ethylene-vinyl alcohol copolymer resin is disposed on the outer side of the primary component (6). This is an example in which the filler 3 is attached as a binder 4 and the filler 3 is mixed into the binder 4. Fig. 1C shows a composite fiber in which polypropylene 8 and ethylene-vinyl alcohol copolymer resin 7 are arranged in multiple portions. (9), the ethylene-vinyl alcohol copolymer resin 7 functions as a binder resin, and is an example in which the filler 3 is fixed in its periphery.

Fig. 2 is a cross-sectional view of the nonwoven fabric having a three-layer structure in one embodiment of the present invention, in which filler fixing fiber layers 11 and 11 are disposed on the outside, and rayon fiber layers 12 are disposed on the inside.

3 is an exemplary process diagram of the manufacturing method of the present invention. The fiber or nonwoven fabric 31 is impregnated into the filler dispersion solution 33 containing the filler in the water tank 32 or the filler dispersion solution 33 containing the filler and the ethylene-vinyl alcohol copolymer resin, and compressed into a drawing roll 34. Is wound by wet heat treatment between the steamer 35 and the suction 36, or in the case of a nonwoven fabric, compression molding is performed by patterning canvas rolls 38 and 38 over a pair of heating rolls 37 and 37. The nonwoven fabric surface is provided with a predetermined pattern shape, and then wound around the winder 39. In place of the steamer 35 and the suction 36, for example, a pressurization treatment may be performed at a temperature of 150 ° C. for 5 minutes using the upper and lower hot plates. As another embodiment, the method of compression molding with only a pair of heating rolls without the steamer 35, and the method of compression molding with only the canvas rolls 38 and 38 for patterning over the pair of heating rolls 37 and 37 without the steamer 35 There is also.

4A to 4F show a state in which a filler is fixed to the nonwoven fabric and its constituent fibers obtained in one embodiment of the present invention, a is a scanning electron microscope planar photograph (magnification 100) showing a nonwoven fabric, and b is a scan showing the nonwoven fabric Electron microscope cross-section photograph (magnification 100), c is a magnified photograph of the fiber surface of the nonwoven fabric (magnification 1000), d is a scanning electron microscope plane photograph (magnification 100) showing the nonwoven fabric, nonwoven fabric of another portion, e is the nonwoven fabric, Scanning electron microscope cross-section photograph (magnification 100) which shows the nonwoven fabric of another part, f is the enlarged photograph of the fiber surface (magnification 1000) of the said nonwoven fabric and the nonwoven fabric of another part.

5A to 5C show a state in which a filler is fixed to a nonwoven fabric and its constituent fibers obtained in another embodiment of the present invention, a is a scanning electron micrograph (magnification 100) showing a nonwoven fabric, and b is a scan showing the nonwoven fabric An electron microscope cross section (magnification 100), c is an enlarged photograph (fiber magnification) of the fiber surface of the surface of the nonwoven fabric.

It is an example process drawing of the manufacturing method of the nonwoven fabric containing water and a filler in one Embodiment of the fiber molded object of this invention. The nonwoven fabric master 31 is impregnated with a filler dispersion solution 33 containing a filler in the water tank 32 or a filler dispersion solution 33 containing a filler and an ethylene-vinyl alcohol copolymer resin, and compressed into a drawing roll 34. Thereby, about 500 mass% of water and a filler are provided to a nonwoven fabric. Next, it was brought into close contact with a mold made of a stainless steel sheet having a thickness of 0.3 mm, brought into a contact pressure state, and placed in a hot air dryer having a processing temperature of 140 ° C. for 10 minutes to be subjected to contact pressure processing. The molded object produced the mask 40 which covers the mouth and nose of a human body shown in FIG. 8, and the pleated processed product 50 of the filter for air cleaners shown in FIG.

It is an example process drawing of the manufacturing method of the filler fixing fiber or nonwoven fabric in other embodiment of this invention. The fiber or nonwoven fabric 31 includes an aqueous solution or filler (eg, gas-adsorbable particles) containing a filler (eg, gas-adsorbent particles) in the water tank 32 and an ethylene-vinyl alcohol copolymer. It is impregnated into the filler dispersion 33, compressed with a drawing roll 34, steamed in a steamer 35 from which steam begins to blow from below, dried in a dryer 41, and wound up in a winder 39. 11A and 11B show a state in which a filler is fixed to a nonwoven fabric and its constituent fibers obtained in one embodiment of the present invention, a is a scanning electron microscope planar photograph (magnification 200) showing a nonwoven fabric, and b is a fiber of the surface of the nonwoven fabric Surface magnification (magnification 2000).

Example

Hereinafter, it demonstrates more concretely using an Example.

(Example 1)

The following non-woven fabrics were prepared.

(Non-woven)

The water flow interwoven nonwoven fabric of the following three-layered constitution was formed.

The first layer and the third layer were composed of a super ethylene-vinyl alcohol copolymer resin (EVOH, 38 mol% of ethylene, melting point of 176 ° C) and a core component polypropylene in the form of a core sheath composite fiber (fineness: 2.8 dtex). And fiber length: 51 mm), the weight of which was 30 g / m 2 in each layer.

The second layer was a card web made of rayon fibers (fineness: 1.7 dtex, fiber length: 40 mm), and the weight was 30 g / m 2.

The weight of the water-flow entangled nonwoven fabric of the three-layer configuration was 9Og / m 2. This nonwoven fabric was overlapped in the order of 1st layer / 2nd layer / 3rd layer, and the high-pressure water flow process of 6 MPa was carried out, and the fiber of the thickness direction was entangled.

(Filler dispersion solution)

As a filler, "Alumina" (average particle diameter: 0.7 µm) manufactured by Nippon Light Metal Co., Ltd. was suspended in water at a rate of 3% by mass to obtain a filler dispersion solution (polishing solution).

(Glossing and Gel Processing)

The nonwoven was immersed in the abrasive solution and compressed with a mangle roll. The pickup rate was adjusted to about 500%, and the amount of fillers to be fixed was adjusted to the numerical value shown in Table 1. The pickup rate is a value obtained by multiplying the sum of the moisture content and the filler amount with respect to the mass of the nonwoven fabric by 100. Then, the canvas net was attached to the upper and lower hot plates heated at 120 degreeC, and the gel process was carried out for 2 second by the pressure of 0.064 Mpa through the said nonwoven fabric between them. Next, it was dried by hot air at 100 캜.

(Abrasive property evaluation test)

The following ink was applied to a stainless plate and a ceramic bowl, and after drying, dirt was removed using each abrasive. The removal of dirt was rubbed by applying the same force to each sample with a human hand. The ink, the evaluation object, and the evaluation point were as follows.

(1) ink

A: Oil-based ink made by Deranishi Chemical Industry Co., Ltd. (No.500)

B: oily ink made by Shachihata Co., Ltd. (artline)

C: Oil-based ink made by Zebra (High? Macy)

D: Mitsubishi Pencil-based oil ink (Mitsubishi marker piece)

E: Oil-based ink made by Sakura Crepas, Inc. (name)

(2) State of evaluation object and abrasive

a: stainless steel plate

b: earthenware

dry: Use dry

wet: used while squeezed in water

(3) Evaluation Point

6 points | pieces: 5 times of frictions completely removed the dirt.

5 points | pieces: The dirt | cleaning disappeared 10 times with the number of frictions.

4 points | pieces: The dirt | cleaning disappeared completely by 20 friction times.

3 points | pieces: The dirt | cleaning disappeared completely by 30 times of frictions.

2 points | pieces: Slight dirt remains in part by 30 times of frictions.

1 point | piece: There are half of dirt left by 30 times of frictions.

0 point: The friction number is 30 times and the dirt hardly falls off.

In addition, evaluation samples were conducted for each of five tests. The results of the polishing test are summarized in Table 1 below.

Moreover, the state by which the filler adheres to the obtained nonwoven fabric and its constituent fiber is shown to FIGS. 4A-F.

(Comparative Example 1)

The water flow entangled nonwoven fabric of the following three-layered constitution was formed.

The first layer and the third layer are card webs made of ethylene-vinyl acetate copolymer resin (EVA, melting point 101 ° C.) and polypropylene with a core sheath composite fiber (fineness: 2.2 dtex, fiber length: 51 mm) in a ratio of 50:50. In each case, the weight was 30 g / m 2.

The second layer was a card web made of rayon fibers (fineness: 1.7 dtex, fiber length: 40 mm), and the weight was 30 g / m 2.

The weight of the water flow entangled nonwoven fabric having the three-layer configuration was 90 g / m 2. The nonwoven fabric was stacked in the order of the first layer, the second layer, and the third layer, and subjected to high-pressure water flow treatment of 6 MPa to entangle the fibers in the thickness direction.

Other conditions, such as the provision of an abrasive, were as in Example 1. The results of the polishing test are summarized in Table 1 below.

(Comparative Example 2)

The water flow entangled nonwoven fabric of the following three-layered constitution was formed.

The first layer and the third layer are made of ethylene-methyl acrylate copolymer resin (EMA, melting point: 86 ° C.) and polypropylene with a core sheath composite fiber (fineness: 2.2 dtex, fiber length: 45 mm) in a ratio of 50:50. The weight of each web was 30 g / m 2.

The second layer was a card web made of rayon fibers (fineness: 1.7 dtex, fiber length: 40 mm), and the weight was 30 g / m 2.

The weight of the water flow entangled nonwoven fabric having the three-layer configuration was 90 g / m 2. The nonwoven fabric was stacked in the order of the first layer, the second layer, and the third layer, and subjected to high-pressure water flow treatment of 6 MPa to entangle the fibers in the thickness direction.

Other conditions, such as the provision of an abrasive, were as in Example 1. The results of the polishing test are summarized in Table 1 below.

(Primary one)

An abrasive test was carried out in the same manner as in Example 1 using a commercially available abrasive nonwoven fabric scrubber (manufactured by 3M). The results are summarized in Table 1 below.

(Previous 2)

An abrasive test was carried out in the same manner as in Example 1 using a commercially available abrasive sponge with a abrasive grain (manufactured by Este Chemical Co., Ltd.). The results are summarized in Table 1 below.

As shown in Table 1, the nonwoven fabric containing the filler fixing fiber of this Example showed the abrasiveness of the substantially same level as a commercially available abrasive. In addition, in the nonwoven fabric containing the filler fixing fiber of the present example, the filler did not fall off, and the durability was obtained. It is especially useful for polishing of a lens, a semiconductor, etc. that a filler does not fall out.

(Example 2)

(Non-woven)

A water flow entangled nonwoven fabric (water pressure 6 MPa, high pressure water flow treatment) having a weight of 100 g / m 2 composed of the sheath type composite fiber of Example 1 was used.

(Processing order and condition)

The nonwoven fabric was pretreated by immersing in an aqueous solution containing 0.1% by mass of a surfactant (polyoxyethylene alkylphenol ether having 9 carbon atoms of alkyl group). Next, ethylene-vinyl alcohol copolymer resin (EVOH) powder (made by Nippon Synthetic Chemical Co., Ltd., brand name "Soanol", powder type B-7, ethylene 29 mol%, melting | fusing point 188 degreeC), and activated carbon (made by Kuraray Chemical Co., Ltd.) It was immersed in the aqueous dispersion solution of "Kurere Kohl" PL-D), and it compressed into the mangle roll. Then, gel process was performed through the nonwoven fabric between canvas nets using the hotplate hydraulic press machine (heating upper and lower hotplates). The heating temperature was 120 ° C., the press pressure was 0.032 MPa, and the heating time was 2 minutes. Thereafter, the excess filler was washed away and dried with hot air at 100 ° C.

The activated carbon was firmly and uniformly fixed. The result of the nonwoven fabric containing the obtained filler fixing fiber is put together in Table 2, and is shown.

(Example 3)

It processed like Example 2 except having used the 60 g / m <2> water flow entanglement nonwoven fabric which consists of 1.7 dtex of rayon fibers and 51 mm (high pressure water flow process of 6 MPa water pressure).

The activated carbon was firmly and uniformly fixed. The result of the obtained filler fixed nonwoven fabric is put together in Table 2, and is shown.

(Example 4)

Treatment was carried out in the same manner as in Example 2, except that a 50 g / m 2 water entangled nonwoven fabric (high pressure water flow treatment of 6 MPa water pressure) composed of polyester fiber 1.7 dtex and 51 mm was used.

The activated carbon was firmly and uniformly fixed. The result of the obtained filler fixed nonwoven fabric is put together in Table 2, and is shown.

(Example 5)

The same procedure as in Example 2 was carried out except that a 60 g / m 2 water entangled nonwoven fabric (high pressure water flow treatment of 6 MPa water pressure) composed of 1.7 dtex of polypropylene fiber and 51 mm was used.

The activated carbon was firmly and uniformly fixed. The result of the obtained filler fixed nonwoven fabric is put together in Table 2, and is shown.

(Example 6)

The first layer and the third layer were composed of ethylene-vinyl alcohol copolymer resin (EVOH) of Example 1 and polypropylene of Example 1 of 50:50 split type composite fibers (depth: 3.3 dtex, fiber length: 51 mm). The weight was 30 g / m <2> in each layer. The second layer between the first layer and the third layer is a card web in which the rayon fibers and the polyester fibers (fineness: 1.7 dtex, fiber length: 51 mm) of Example 1 are mixed 1: 1, and the weight is 30 g. / M 2. Hereinafter, it was set as the water flow entangled nonwoven fabric by the method similar to Example 1, and gel-processed. As in Example 1, the filler was firmly and uniformly fixed. 5A to C show the state in which the filler is fixed to the obtained nonwoven fabric and its constituent fibers.

(Example 7)

(Production of nonwoven fabric disc)

The primary component is ethylene-vinyl alcohol copolymer resin (EVOH, 38 mol% of ethylene content, melting point 176 ° C), the core component is polypropylene (PP, melting point 161 ° C), and the EVOH: PP ratio is 50:50 (volume ratio). A core sheath composite fiber (fineness 3.3 dtex, fiber length 51 mm) was prepared. Dry heat-adhesive composite fiber (Daiwa spinning agent, NBF (H)) having a fineness of 2.2 dtex and a fiber length of 51 mm whose initial component is polyethylene (PE, melting point 132 ° C.) and core component is polypropylene (PP, melting point 161 ° C.). Was prepared.

75 mass% of said sheath sheath composite fiber and 25 mass% of said dry heat-adhesive fiber were mixed, and it opened by the semi-random card machine, and produced the card web of 45 g / m <2> in weight. Thereafter, the card web is mounted on a 90-mesh plain weave support, and water flows toward the card web from a nozzle in which orifices (diameter: 0.12 mm, pitch: 0.6 mm) are arranged in a line in the width direction of the card web. After spraying at 3 MPa, it was further sprayed at 4 MPa water pressure. Subsequently, the card web was separated, and water flow was injected from the nozzle at a water pressure of 4 MPa to produce a water flow entangled nonwoven fabric.

(Preparation of filler)

As the filler, activated carbon particles: "Daiko SA1000" (manufactured by Nimura Chemical Co., Ltd., average particle diameter 100 mu m) was used.

(Production of nonwoven fabric containing filler fixing fiber)

The nonwoven fabric disc was immersed in a filler dispersion solution (20 DEG C) in which 8% by mass of the activated carbon particles were dispersed in water, and the pick-up rate was adjusted at a drawing pressure of about 60 N / cm linear pressure using a mangle roll. Thereafter, the nonwoven fabric disc impregnated with the filler dispersion solution was steamed at a temperature of 102 ° C. in a water bath and a processing time of 15 seconds using a steamer from which steam was blown from the lower part of the nonwoven fabric disc, and a hot air dryer (100 ° C.) It dried with and obtained the nonwoven fabric of this invention. The obtained nonwoven fabric had a weight of 68 g / m 2 and a filler of about 23 g / m 2 was fixed. 11A and B show the state in which the filler is fixed to the obtained nonwoven fabric and its constituent fibers. The obtained nonwoven fabric maintained the fibrous form and was fixed while the filler was exposed to the fiber surface.

(Examples 8-11)

The following were prepared as a gas adsorption material.

(Production of nonwoven fabric disc)

The primary component is an ethylene-vinyl alcohol copolymer resin (EVOH, 38 mol% of ethylene content, melting point of 176 ° C), the core component of polypropylene (PP, melting point of 161 ° C), and the EVOH: PP ratio of 50:50 (volume ratio). A sheath type composite fiber (fineness 2.8 dtex, fiber length 51 mm) was prepared.

The cardiac sheath composite fiber was opened by a semi-random card machine to produce a card web having a weight shown in Table 3. Thereafter, the card web is mounted on a 90-mesh plain weave support, and water flows toward the card web from a nozzle in which orifices (diameter: 0.12 mm, pitch: 0.6 mm) are arranged in a line in the width direction of the card web. After spraying at 3 MPa, it was further sprayed at 4 MPa water pressure. Subsequently, the card web was separated, and water flow was injected from the nozzle at a water pressure of 4 MPa to produce a water flow entangled nonwoven fabric used in Examples 8 to 11.

(Preparation of filler)

Gas-adsorbable particles were prepared as fillers. As the gas-adsorbable particles, activated carbon particles: "Kurare Kohl PL-D" (Kurare Chemical Co., Coconut shell charcoal, average particle size 40-50 탆) were used.

(Production of nonwoven fabric containing filler fixing fiber)

The nonwoven fabric disc was immersed in a filler dispersion solution (20 DEG C) in which 10% by mass of the activated carbon particles were dispersed in water, and the pick-up ratio was adjusted by drawing pressure of a mangle roll, and the fixed amount of the activated carbon particles was shown in Table 3. It adjusted so that it might become a numerical value shown. The pickup rate is a value obtained by multiplying 100 by the sum of the amount of water and the amount of activated carbon particles with respect to the mass of the nonwoven fabric disc. Thereafter, the nonwoven fabric disc impregnated with the filler dispersion solution was lined with 0.3 mm, and the number of meshes: 30 pieces / inch × 25 pieces / inch, two flat plastic nets (40cm × 40cm). The sheet was mounted on a hot plate heated at 150 ° C., and the upper portion of the plastic net was covered with an aluminum sheet (1 g / cm 2) for 15 minutes. The obtained nonwoven fabric was wash | cleaned with water, and it dried with hot air dryer (100 degreeC), and obtained the nonwoven fabric (gas adsorption material) of this invention.

(Example 12)

A nonwoven fabric such as a water flow entangled nonwoven fabric used in Example 8 was pulled up after being immersed in a filler dispersion solution (95 ° C.) in which 5% by mass of the activated carbon particles were dispersed in water for 30 seconds. Then, the nonwoven fabric was supported until the temperature of the nonwoven fabric became 50 ° C. Thereafter, the nonwoven fabric disc was washed with water and dried with a hot air dryer (100 ° C.) to obtain a nonwoven fabric (gas adsorption material) of the present invention.

In Table 3, the weights of the nonwoven fabrics (gas adsorbents) of Examples 8 to 12, the weight of the nonwoven fabrics, the amount of fixation of activated carbon particles, the rate of fixation of activated carbon particles, and the weight of the nonwoven fabrics (gas adsorbents) are shown.

(Comparative Example 3)

A filler dispersion solution containing 15% by mass of a self-crosslinking acrylic ester emulsion (manufactured by Nippon Carbide Co., Ltd., trade name "Nicazol FX-555A") and 10% by mass of the activated carbon particles was prepared. Subsequently, the solution was immersed in a nonwoven fabric such as the water flow entangled nonwoven fabric used in Example 8, compressed with a mangle roll, and dried at a temperature of 14O &lt; 0 &gt; C and a processing time of 15 minutes using a hot air dryer. A chemical bond nonwoven fabric having a fixed amount of activated carbon particles of 38 g / m 2 was obtained.

(Comparative Example 4)

As Comparative Example 4, a VOC gas adsorption sheet in which activated carbon particles were fixed by hot melt between two spunbond nonwoven fabrics having a deodorant fixed on the surface thereof (Asahi Kasei Fiber, trade name "Semi V", weight 134 g / m 2, activated carbon particles A fixation amount of about 40 g / m 2) was prepared.

(VOC gas adsorption test method)

The sheets of Examples 8 to 12 and Comparative Examples 3 and 4 were cut to a size of 10 cm in length x 10 cm in width, respectively, and the capacity was placed in a 5 liter pollution analysis bag (trade name "Tedra Bag"). Each VOC gas combined with air was injected to the initial concentration indicated. The injection time was taken as the start time, and each time the concentration of each VOC gas in the bag was measured with a gas detector tube. The results are shown in Tables 4-6. Moreover, in Tables 4-6, "ND" shows the case where the density | concentration of each VOC gas became less than the measurement limit (2 ppm) of the gas detection tube used.

(result)

As shown in Tables 4 to 6, when the nonwoven fabrics of Examples 8 to 11 were used, the rate of reduction of the concentration of each VOC gas was faster than that of Comparative Examples 3 and 4, and the gas adsorption performance was improved. Moreover, as shown in Table 4, Example 12 showed the adsorption | suction performance of the formaldehyde equivalent to Comparative Example 3, although the fixed amount of activated carbon particle | grains is smaller than Comparative Example 3. In addition, as shown in Tables 5 and 6, in Example 12, the adsorption performance of the gas was improved, although the fixed amount of the activated carbon particles was smaller than in Comparative Example 4. This is because the activated carbon particles (gas adsorptive particles) in the nonwoven fabrics of Examples 8 to 12 are fixed by the wet heat gelled gelation of the fiber surface, so that the gas absorbent particles are fixed in the state exposed to the surface, and Comparative Example 3, Compared with 4, it is thought that the decrease of the specific surface area of gas-adsorbable particle | grains is suppressed. In addition, the nonwoven fabrics of Examples 8-12 maintained the fiber shape, and the nonwoven fabric did not shrink | contract at the time of gel processing. In addition, the nonwoven fabrics of Examples 8 to 12 did not have dropping of the gas-adsorbable particles.

(Example 13)

As the water purification material, the followings were prepared.

(Production of nonwoven fabric disc)

The primary component is an ethylene-vinyl alcohol copolymer resin (EVOH, 38 mol% of ethylene content, melting point of 176 ° C), the core component of polypropylene (PP, melting point of 161 ° C), and the EVOH: PP ratio of 50:50 (volume ratio). A sheath type composite fiber (fineness 2.8 dtex, fiber length 51 mm) was prepared.

The cardiac sheath composite fiber was opened by a semi-random card machine to produce a card web having a weight of 101 g / m 2. Thereafter, the card web is mounted on a 90-mesh plain weave support, and water flows toward the card web from a nozzle in which orifices (diameter: 0.12 mm, pitch: 0.6 mm) are arranged in a line in the width direction of the card web. After spraying at 3 MPa, it was further sprayed at 4 MPa water pressure. Subsequently, the card web was separated, and water flow was injected from the nozzle at a water pressure of 4 MPa to produce a water flow entangled nonwoven fabric used in Example 1.

(Preparation of filler)

As the filler, organic material adsorbable particles were prepared. As organic substance adsorption particle | grains, activated carbon particle | grains: "Kurare Cole PL-D" (Kurare Chemical Co., Coconut shell coal, average particle diameter 40-50 micrometers) were used.

(Production of nonwoven fabric containing filler fixing fiber)

The nonwoven fabric disc was immersed in a filler dispersion solution (20 DEG C) in which 10% by mass of the activated carbon particles were dispersed in water, and the pick-up ratio was adjusted by drawing pressure of a mangle roll, and the fixed amount of the activated carbon particles was shown in Table 7. It adjusted so that it might become a numerical value shown. Thereafter, the nonwoven fabric disc impregnated with the filler dispersion solution was sandwiched with two plain weave plastic nets (40 cm x 40 cm) with a diameter of 0.3 mm and a mesh number of 30 pieces per inch and 25 pieces per inch. It mounted on the hotplate heated to 150 degreeC, and also covered the said plastic net of the upper side with aluminum sheet (1g / cm <2>), and wet heat-processed for 15 minutes. The obtained nonwoven fabric was washed with water, and it dried with hot air dryer (100 degreeC), and obtained the nonwoven fabric (water purification material) of this invention.

(Example 14)

When the activated carbon particles are fixed by using a card web having a weight of 40 g / m 2, the concentration of the activated carbon particles in the aqueous dispersion is set to 5% by mass, and the pick-up rate is adjusted with a mangle roll to show the fixed amounts of the activated carbon particles in Table 1. Except having adjusted so that it might become a numerical value shown, the nonwoven fabric (water purification material) of this invention was obtained by the method similar to Example 13.

In Table 7, the weight of the nonwoven fabric (water purification material) of Examples 13 and 14 was shown, the weight of the nonwoven fabric disc, the fixed amount of activated carbon particles, the fixation rate of activated carbon particles, and the weight of the nonwoven fabric (water purification material). The nonwoven fabrics of Examples 13 and 14 retained the fiber shape and did not shrink when the nonwoven fabrics were treated during gel processing.

(Comparative Example 5)

As Comparative Example 5, an activated carbon fiber nonwoven fabric (made by Kuraray Chemical, trade name "Kurakutive" weight about 180 g / m 2) was prepared.

(Water Purification Performance Test Method)

In Examples 13 and 14 and Comparative Examples 3 and 5, the water purification performance test was performed with the water circulation-type simplified tester shown in FIG. As shown in FIG. 6, the water circulation type quick test machine 20 is connected to the stand 21 by the stand 21, the fixing jig 22a, 22b attached to the stand 21, and the fixing jig 22a. A cylindrical container 23 having a fixed bottom and a pump 24 for circulating water in the container 23 are provided. The pump 24 includes a tube 24a attached to the opening 23a of the bottom of the container 23, and a tube 24b fixed to the stand 21 by the fixing jig 22b. The water in the container 23 is sucked by the tube 24a from the opening 23a of 23, and the sucked water is discharged | emitted to the upper part of the container 23 by the tube 24b. In addition, in this test, about Example 13 and Comparative Example 5, the plant wastewater which becomes 40 ppm of chemical oxygen demand (COD) is put into the container 23, and, for Example 14 and Comparative Example 3, COD is 20 ppm of factory wastewater was put in and performed. In addition, by the electric power regulator (not shown) connected to the pump 24, the circulation flow rate of water was 6 liters / minute, and the liquid quantity of the said factory wastewater in the container 23 was maintained at 1 liter during the test.

(Production method of test sample)

Each of the nonwoven fabrics of Examples 13 and 14 and Comparative Examples 3 and 5 was cut into small pieces 25 (see FIG. 6) of 3 cm x 3 cm. Next, for each of Examples 13 and 14 and Comparative Examples 3 and 5, the small pieces 25 were weighed so that the amount of activated carbon was 10 g, and the weighed small pieces 25 were commercially available tea packs 26 (see FIG. 6). Into a test sample 27 (see Fig. 6). In the water purification performance test, as illustrated in FIG. 6, the test sample 27 was immersed in the factory wastewater in the container 23 and fixed to the fixing jig 22b by the wire 28.

(Measurement method of COD concentration)

The COD concentration is obtained by collecting the factory wastewater in the container 23 in a beaker with a dropper at every measurement time, and using a water test product "Pack Test" manufactured by the Public Research Institute for Chemical and Chemical Research (WAK-COD, measuring range 0 to 100 mg / liter). It was measured by comparing the color with the standard color. The results are shown in Table 8.

(result)

As shown in Table 8, when the nonwoven fabrics of Examples 13 and 14 were used, the rate of reduction of the COD concentration was faster than that of Comparative Examples 3 and 5, showing good water purification performance. In particular, 120 minutes after the start of measurement, the COD concentration of Example 14 was half the COD concentration of Comparative Example 3, and the water purification performance was improved. This is because the activated carbon particles (organic adsorbent particles) in the nonwoven fabric of Example 14 are fixed by a wet heat gelled gelation fixed to the surface of the fiber, so that the organic adsorbent particles are fixed in the state exposed to the surface, Comparative Example 3 It is considered that the decrease in the specific surface area of the organic material adsorbent particles is suppressed compared to the above.

(Activated Carbon Dropping Rate)

In Example 14 and Comparative Example 5, the rate of activated carbon dropping was measured by the method shown below.

Each of the nonwoven fabrics of Example 14 and Comparative Example 5 was cut so that the amount of activated carbon was 1.21 g. The size of the cut sample was 30 cm x 20 cm in Example 14, and Comparative Example 5 was 6.6 cm x 10 cm. Next, 2 liters of water was put into a 3 liter beaker, and the said sample of Example 13 and the comparative example 5 was put into the water in a beaker, respectively, and it stirred for 4 hours in the magnet stirrer. Subsequently, the sample was extracted and the residual liquid in the beaker was filtered using a glass filter (Made by Dongyang Filtration Co., Ltd., trade name "Advantech", model number "GLASS FIBER GS25", diameter 47mm). After drying the filtered glass sheet, the mass of the glass sheet after drying was measured. Then, the dropping amount and dropping rate of the activated carbon were determined from the mass of the obtained glass filter. In addition, the falling amount of activated carbon was made into the value which removed the mass of the glass filter before filtration from the mass of the glass filter after drying. The dropout rate of activated carbon was determined by multiplying the value obtained by dividing the amount of dropping of the activated carbon by the amount of activated carbon (1.21 g) before the test. The results are shown in Table 9.

(result)

As shown in Table 9, the nonwoven fabric of Example 14 can suppress the dropping amount and the dropping rate of activated carbon in comparison with Comparative Example 5. This is considered to be because the activated carbon (activated carbon particles) in the nonwoven fabric of Example 14 is fixed by the wet heat gelled gelation fixed on the surface of the fiber, and thus the activated carbon can be held more firmly than in Comparative Example 5.

(Example 15)

(Production of nonwoven fabric disc)

The primary component is an ethylene-vinyl alcohol copolymer resin (EVOH, 38 mol% of ethylene content, melting point of 176 ° C), the core component of polypropylene (PP, melting point of 161 ° C), and the EVOH: PP ratio of 50:50 (volume ratio). A sheath type composite fiber (fineness 2.8 dtex, fiber length 51 mm) was prepared.

The cardiac sheath composite fiber was opened by a semi-random card machine to produce a card web having a weight of 40 g / m 2. Thereafter, the card web is mounted on a 90-mesh plain weave support, and water flows toward the card web from a nozzle in which orifices (diameter: 0.12 mm, pitch: 0.6 mm) are arranged in a line in the width direction of the card web. After spraying at 3 MPa, it was further sprayed at 4 MPa water pressure. Subsequently, the card web was separated, and water flow was injected from the nozzle at a water pressure of 4 MPa to produce a water flow entangled nonwoven fabric.

(Preparation of filler)

As a filler, activated carbon particle | grains: "Kurare Kohl PL-D" (made by Kuraray Chemical, coconut shell coal, average particle diameter 40-50 micrometers) was used.

(Pillar adhesion moist heat molding processing)

The nonwoven fabric disc was immersed in a filler dispersion solution (20 DEG C) in which 10% by mass of the activated carbon particles were dispersed in water, and the pickup rate was adjusted by the drawing pressure of the mangle roll.

The nonwoven fabric containing the moisture and the filler was closely contacted between a pair of molds made of a stainless steel plate having a thickness of 0.3 mm, and placed in a hot air dryer having a processing temperature of 14O &lt; 0 &gt; C for heat treatment at a contact pressure for 10 minutes. The molded object produced the pleated workpiece | work of the filter for air cleaners shown in FIG. 9 using the mask 40 which covers the mouth and nose of a human body shown in FIG. 8 using the slow mold, and the pleat-shaped mold. . The fixation rate of the activated carbon particles of the obtained mask and the pleated product was about 100% by mass.

The mask shown in FIG. 8 had a moderate flexibility, maintained a fibrous form, and was a wobble molded body having a deep drawing pressure in which fibers were uniformly dispersed. Activated carbon particles fixed by gelation did not fall off from the molded body. Moreover, even if a mask was attached, there was no case where a shortness of breath was felt. The pleated workpiece of FIG. 9 was a molded article having a deep drawing pressure in which the fiber form was maintained, the fibers were uniformly dispersed, and the valleys (gold) of the pleats were clear. Activated carbon particles fixed by gelation did not fall off from the molded body. Since the pleated workpiece of FIG. 9 was firmly folded, workability to a pleated cartridge filter was also good.

The present invention can provide a filler fixing fiber, a fiber structure, a fiber molded article, and a method for producing the same, which can effectively exhibit the function of the filler while maintaining the properties of the original fiber.

In the present invention, since the filler is fixed to the fiber surface by gelling, the filler can be easily fixed in the state exposed to the fiber surface without falling off. For example, when the fiber structure of this invention is used for a gas adsorption material, since gas adsorption particle | grains are fixed by the gelation of a fiber surface, it can adhere in the state which exposed the gas adsorption particle to the surface. Thereby, since the fall of the specific surface area of gas-adsorbable particle | grains can be suppressed, preventing the gas-adsorbable particle | grains which adhere | attached on the fiber surface, it can improve the adsorption performance of gas compared with the conventional gas adsorption material. Moreover, when the fiber structure of this invention is used for a water purification material, since organic substance adsorption particle | grains are fixed by the gelation of a fiber surface, organic substance adsorption particle | grains can be adhere | attached in the state exposed to the surface. Thereby, since the fall of the specific surface area of an organic substance adsorptive particle | grain can be suppressed, preventing the fall of the organic substance adsorptive particle | grains fixed to the fiber surface, purification performance can be improved compared with the conventional water purification material.

In the fiber molded article of the present invention, the binder resin includes a moist heat gelling resin, and the fiber structure is formed into a predetermined shape by fixing the fiber by a gel product obtained by moist heat gelling the moist heat gelling resin, whereby it is intended for medical use. It is flexible even if it comes into direct or indirect contact with human skin. In addition, the molding is uniform and the shape of the deep drawing can be obtained. Moreover, a filler can be stuck to a fiber surface effectively.

In addition, the method for producing a fibrous molded body of the present invention can be uniformly formed by forming a fiber aggregate containing fibers and a moist heat gelling resin and performing a wet heat molding process, and can be easily molded into the shape of a deep drawing. . Molding cost can also be made low for general use.

The filler-fixed fiber and the fiber structure of the present invention are used in filament fibers (dental floss) for cleaning teeth, industrial abrasives, abrasives in various fields such as lenses, semiconductors, metals, plastics, ceramics, glass, and household or commercial kitchens. Gas adsorbent, antibacterial material, deodorant material, ion exchanger, sewage treatment material, oil absorber, metal adsorbent, non-woven material for battery separator, conductive material, antistatic (antistatic) material, humidity control It is useful for ashes, dehumidification (anti-condensation) materials, sound absorbing materials, soundproofing materials, insect repellents, insect repellents, and antiviral materials. For example, the gas adsorption material and the antiviral material can be used for filters such as curing sheets, wallpaper, masks, and air conditioning materials for building materials.

In the case of medical use, the fiber molded article of the present invention includes, for example, a shoulder pad, a breast pad, a jacket wick, a sleeve wick, a pocket wick, a front view of a garment, a back view, a hem, a waist wick of a pants, and the like. In the case of non-medical use, various forms such as masks, pleated workpieces of filter filters for use in air cleaners or clean rooms, insulation of air-conditioned air pipes, piping, pipes, plates, sheets with calendered surface irregularities, etc. It can be molded into.

Claims (44)

As a filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The binder resin is a moist heat gelling resin that gels by heating in the presence of moisture, And said filler is fixed to said wet heat gelling resin by being exposed to said fiber surface by gelation gelled by steam treatment. The method of claim 1, Filler-fixed fiber, characterized in that the wet heat gelation resin is an ethylene-vinyl alcohol copolymer resin. The method of claim 1, Filler-fixed fiber, characterized in that the average particle diameter of the filler is in the range of 0.01 ~ 100㎛. As a fiber structure containing a fiber, binder fixing fiber containing the binder resin of the surface, and the filler adhered to the said binder resin, The binder resin is a moist heat gelling resin that gels by heating in the presence of moisture, The filler is a fiber structure, characterized in that the wet heat gelling resin is fixed by exposure to the surface of the fiber by gelling gelled by steam treatment. 5. The method of claim 4, Fiber structure, characterized in that the wet heat gelation resin is an ethylene-vinyl alcohol copolymer resin. 5. The method of claim 4, The fiber and the binder resin, (I) a composite fiber comprising a moist heat gelling resin component and another thermoplastic synthetic fiber component, (II) a mixture of the composite fiber and another fiber, (III) a mixture of the composite fiber and a wet heat gelation resin, and (IV) Mixing moist heat gelling resin with other fibers Fiber structure having at least one combination selected from. 5. The method of claim 4, Fiber structure, characterized in that the average particle diameter of the filler is in the range of 0.01 ~ 100㎛. 5. The method of claim 4, Fiber structure, characterized in that the filler is an inorganic particle. The method of claim 8, The inorganic particles are alumina, silica, tripoly, diamond, corundum, emery, garnet, flint, synthetic diamond, boron nitride, silicon carbide, boron carbide, chromium oxide, cerium oxide And at least one particle selected from iron oxide, colloidal silicate, carbon, graphite, zeolite, titanium dioxide, kaolin, clay and silica gel. 10. The method of claim 9, And the filler is an abrasive and the fiber structure is an abrasive nonwoven fabric. 5. The method of claim 4, Fiber structure, characterized in that the filler comprises porous particles. The method of claim 11, Fiber structure, characterized in that the porous particles are activated carbon particles. The method of claim 12, Fiber structure, characterized in that the fiber structure is a gas adsorption material. The method of claim 12, Fiber structure, characterized in that the fiber structure is a water purification material. 5. The method of claim 4, The filler fixing fibers are present on both surfaces, and the fiber structure characterized in that the presence of hydrophilic fibers. The method of claim 15, And said hydrophilic fiber is at least one fiber selected from rayon fibers, cotton fibers and pulp. 5. The method of claim 4, The fiber structure is characterized in that the fiber structure is compression molded in the thickness direction is fixed. As a fiber molded body in which the fiber structure containing the fiber, the binder resin of the surface, and the filler fixing fiber adhered to the said binder resin is shape | molded, The binder resin includes a wet heat gelation resin that gels by heating in the presence of moisture, The fiber structure is formed into a predetermined shape while the filler is exposed and fixed to the surface of the fiber by gelling gelled by the wet heat gelling resin by steam treatment. The method of claim 18, The fiber molded body is molded by a contact pressure molding process. As a manufacturing method of the filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The fiber and the binder resin are wet heat gelled fibers which gel by heating in the presence of moisture, A filler dispersion solution in which the filler is dispersed in a solution is provided to the wet heat gelled fiber, Next, the wet heat gelling fibers are steamed in a moist heat atmosphere to gel the moist heat gelling fibers, and the filler is fixed to the fiber surface by gelling. 21. The method of claim 20, The wet heat gelling fiber is a method for producing a filler fastening fiber, characterized in that the wet heat gelling resin alone or a composite fiber comprising a moist heat gelling resin component and other thermoplastic synthetic fiber components. 21. The method of claim 20, The wet heat atmosphere is a method for producing a filler fastening fiber, characterized in that the temperature range of the melting temperature-20 ℃ below the gelling temperature of the wet heat gelling resin. As a manufacturing method of the filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The fiber and the binder resin is a wet fiber gel resin with other fibers, After imparting the wet heat gelation resin to the other fibers, the filler is imparted, or the filler dispersion solution obtained by dispersing the filler and the wet heat gelation resin in the solution is imparted to the other fibers, Next, the method of producing a filler fixing fiber, wherein the wet heat gelling resin is gelled by steaming in a moist heat atmosphere, and the filler is fixed to another fiber surface by gelling. As a manufacturing method of a fiber structure containing the fiber, the binder resin of the surface, and the filler fixing fiber containing the filler fixed to the said binder resin, The binder resin is a moist heat gelation resin that is gelled by heating in the presence of moisture, The fiber and the binder resin, (I) a composite fiber comprising a moist heat gelling resin fiber component and another thermoplastic synthetic fiber component, (II) a mixture of the composite fiber and another fiber, (III) a mixture of the composite fiber and a wet heat gelation resin, and (IV) Mixing moist heat gelling resin with other fibers At least one combination selected from Fabricating a fiber structure with the fibers and the binder resin, Imparting a filler dispersion solution in which the filler is dispersed in a solution to the fiber structure, Next, the wet heat gelation resin is steamed in a moist heat atmosphere to gel the moist heat gelation resin, and the filler is adhered to the fiber surface by gelation to form a filler fixing fiber. . The method of claim 24, The moist heat atmosphere is a method for producing a fiber structure, characterized in that the temperature range of the melting temperature of more than the melting point of 20 ℃ or less of the wet heat gelling resin. delete delete The method of claim 24, The filler dispersion solution is a manufacturing method of the fiber structure, characterized in that the aqueous solution containing an aqueous solution or wet heat gelling resin. delete delete delete As a filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The binder resin is a moist heat gelling resin that gels by heating in the presence of moisture, The filler is fixed by gelling gelled by the wet heat gelation resin, the filler is characterized in that the filler comprises porous particles. As a fiber structure containing a fiber, binder fixing fiber containing the binder resin of the surface, and the filler adhered to the said binder resin, The binder resin is a moist heat gelling resin that gels by heating in the presence of moisture, The filler is fixed by a gelled gel of the wet heat gelling resin, the filler comprises a porous particle, characterized in that the filler. 34. The method of claim 33, Fiber structure, characterized in that the porous particles are activated carbon particles. The method of claim 34, wherein Fiber structure, characterized in that the fiber structure is a gas adsorption material. The method of claim 34, wherein Fiber structure, characterized in that the fiber structure is a water purification material. As a fiber molded body in which the fiber structure containing the fiber, the binder resin of the surface, and the filler fixing fiber adhered to the said binder resin is shape | molded, The binder resin includes a wet heat gelation resin that gels by heating in the presence of moisture, The fiber structure is molded into a predetermined shape with the fiber being fixed by a gelled product of the wet heat gelling resin by wet heat gelation. The fiber molded body characterized by the said filler containing a porous particle. As a manufacturing method of the filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The fiber and the binder resin are wet heat gelled fibers which gel by heating in the presence of moisture, A filler dispersion solution obtained by dispersing the filler in a solution was applied to the wet heat gelled fiber, Next, the wet heat gelled fibers are wet heat treated in a moist heat atmosphere to gel the wet heat gelled fibers, and the filler is fixed to the fiber surface by gelation. The filler is a method for producing a filler fixed fiber characterized in that it comprises porous particles. As a manufacturing method of the filler fixing fiber containing a fiber, the binder resin of the surface, and the filler fixed to the said binder resin, The fiber and the binder resin is a wet fiber gel resin with other fibers, After imparting the wet heat gelation resin to the other fibers, a filler is imparted, or a filler dispersion solution obtained by dispersing the filler and the wet heat gelation resin in a solution is applied to the other fibers, Next, by wet heat treatment in a moist heat atmosphere to gel the moist heat gelling resin, the filler is fixed to another fiber surface by gelling, The filler is a method for producing a filler fixed fiber characterized in that it comprises porous particles. As a manufacturing method of a fiber structure containing the fiber, the binder resin of the surface, and the filler fixing fiber containing the filler fixed to the said binder resin, The binder resin is a moist heat gelation resin that is gelled by heating in the presence of moisture, The fiber and the binder resin, (I) a composite fiber comprising a moist heat gelling resin fiber component and another thermoplastic synthetic fiber component, (II) a mixture of the composite fiber and another fiber, (III) a mixture of the composite fiber and a wet heat gelation resin, and (IV) Mixing moist heat gelling resin with other fibers At least one combination selected from Fabricating a fiber structure with the fibers and the binder resin, Imparting a filler dispersion solution in which the filler is dispersed in a solution to the fiber structure, Next, the moist heat gelling resin is wet heat treated in a moist heat atmosphere to gel the moist heat gelling resin, and the filler is adhered to the fiber surface by gelation to form a filler fixing fiber. Method for producing a fiber structure, characterized in that the filler comprises porous particles. The method of claim 40, The method of manufacturing a fiber structure, characterized in that the wet heat treatment is a compression molding process in the thickness direction. As a manufacturing method of a fiber molded object in which the fiber structure containing the fiber, the binder resin of the surface, and the filler fixing fiber adhered to the said binder resin is shape | molded, The binder resin comprises a moist heat gelling resin which gels by heating in the presence of moisture, Forming a fiber structure comprising the fiber and binder resin, The fiber structure is moist heat-molded by moist heat gelling the moist heat gelling resin in a moist heat atmosphere in a mold, The filler includes a method for producing a fiber molded article, characterized in that it comprises porous particles. The method of claim 42, wherein The method of manufacturing a fiber molded article, wherein the wet heat forming process is a process of inserting a fiber structure containing water and a filler into a pair of molds and subjecting to heat press treatment. The method of claim 42, wherein The wet heat molding process is a method for producing a fiber molded body, characterized in that the contact pressure molding process to be processed at a pressure in contact with the fiber structure and the mold.

Images