JP2016141892A - Antibacterial fiber structure and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antibacterial fiber structure exhibiting excellent antibacterial properties over a long period and a soft feeling.SOLUTION: Provided is a method for producing an antibacterial fiber structure comprising a polymerization step where the surface of a fiber is stuck with a polymer obtained by polymerizing a compound in which silver ions are eluted and a monomer having two or more double bonds capable of radical polymerization or a treatment liquid containing a compound in which silver ions are eluted and a monomer having two or more double bonds capable of radical polymerization is applied to a fiber to polymerize the monomers in the surface of the fiber.SELECTED DRAWING: None

Description

  The present invention relates to a fiber structure having antibacterial properties, particularly a fiber fabric, and a method for producing the same.

Conventionally, fiber fabrics having antibacterial properties are known. In particular, various types of fiber fabrics having antibacterial properties by using silver are known.
For example, there is known a fiber fabric formed by kneading and spinning silver particles or silver on which silver is supported in advance in a polyester resin or the like and using the obtained fiber. (Patent Document 1)
The fiber fabric obtained by such a method is difficult to exhibit a high level of antibacterial properties because silver is buried in the resin, and exhibits antibacterial properties. In order to put out, it was necessary to increase the amount of silver added, and there were problems in terms of cost, yarn strength, dyeability and the like.

In addition, zeolite carrying silver or the like is applied to the surface of the fiber fabric using a padder or a gravure coater using a binder resin such as a urethane resin or an acrylic resin. (Patent Document 2)
Although the fiber fabrics obtained by these methods have antibacterial properties, the durability against washing is not sufficient, and improvement has been desired.
Further, an antibacterial waterproof fabric using a resin film containing silver is known. (Patent Document 3)
The fiber fabric obtained by this method is waterproof and has antibacterial properties excellent in washing durability, and is suitable for use as a feather, a raincoat, a windbreaker, and a shape-up suit. Since the resin film containing silver has a thickness of several μm or more, has a hard texture, and has very little air permeability, it is not suitable as a fiber fabric for use in blouses, jackets, lab coats, work clothes, etc. .

JP 2008-111221 A JP 2013-1000026 A JP 2008-168435 A

  Therefore, an object of the present invention is to provide an antibacterial fiber structure having a soft texture that exhibits excellent antibacterial properties for a long period of time and can be used for various applications.

In order to solve the above problems, an antibacterial fiber structure according to the present invention has the following configuration.
(1) Antibacterial fiber structure obtained by adhering a compound eluting silver ions and a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization to the surface of the fiber .
(2) Antibacterial test method and antibacterial effect of JIS L1902 textile product after 50 washes by high temperature accelerated washing method Quantitative test Bacterial liquid absorption method Bacterial species used: Bactericidal activity value measured according to Staphylococcus aureus is 0 The antibacterial fiber structure according to the above (1), characterized by being super.
(3) The antibacterial fiber structure according to (1) or (2), wherein the fiber is a synthetic fiber or a semi-synthetic fiber.
(4) The antibacterial property according to any one of (1) to (3), wherein the thickness of a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization is less than 5 μm. Fiber structure.

Moreover, the manufacturing method of the antimicrobial fiber fabric concerning this invention has the following structures.
(5) applying a treatment liquid containing a compound that elutes silver ions and a monomer having two or more double bonds capable of radical polymerization to fibers;
A polymerization step of polymerizing the monomer on the surface of the fiber;
For producing an antibacterial fiber structure.

  The antibacterial fiber structure of the present invention is an antibacterial fiber fabric using silver, has excellent antibacterial properties, is excellent in washing durability, has a soft texture, and can be used for various applications.

Hereinafter, the fiber fabric which concerns on one Embodiment of this invention is demonstrated.
The antibacterial fiber structure of the present invention is obtained by adhering a compound eluting silver ions and a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization to the surface of the fiber. It will be.
In addition, the compound formed by polymerizing a compound that elutes silver ions of the present embodiment and a monomer having two or more double bonds capable of radical polymerization is attached to the surface of the fiber.
1. A compound that elutes silver ions and the following various monomers or polymers and / or polymers obtained containing a monomer having two or more double bonds capable of radical polymerization are polymerized or chemically 1. The bonded compound adheres to the fiber surface. The compound in which the eluted silver ion is chemically bonded to the following various monomers or polymers and / or the obtained polymer including a monomer having two or more double bonds capable of radical polymerization is a fiber. 2. Adhering to the surface A compound obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization serves as a binder, and a compound that elutes silver ions (the compound itself that elutes silver ions adheres to the fiber surface itself) Including at least one of those attached to the fiber surface.
In this embodiment, a compound obtained by polymerizing a compound that elutes silver ions and a monomer having two or more double bonds capable of radical polymerization is integrated by polymerizing or chemically bonding to each other. In particular, only a compound in which a compound eluting silver ions and a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization are the same may be used. The aspect which is comprised and each separate compound is not attached to the fiber surface is also contained.
In addition, the confirmation that the compound that elutes silver ions in this embodiment is attached can be confirmed by performing the antibacterial test described in the present embodiment on the fiber structure, based on the presence or absence of antibacterial properties. If the property can be confirmed, it is assumed that a compound from which silver ions are eluted adheres. Specifically, antibacterial activity can be confirmed when the bactericidal activity value in an antibacterial activity test according to JIS L1902 described later exceeds 0.

The fibers of this embodiment are synthetic fibers such as polyester, nylon, acrylic, polyurethane and aramid, regenerated fibers such as rayon, bamboo fiber and soy protein fiber, semi-synthetic fibers such as triacetate and diacetate, cotton, hemp, silk, Examples thereof include those made of natural fibers such as hair, and may be a combination of a plurality of fibers such as mixed fibers, mixed spinning, union, knitting, and the like, and is not particularly limited. Also, carbon fiber or antistatic yarn may be combined.
From the viewpoint of antibacterial washing durability, synthetic fibers or semi-synthetic fibers are preferable, particularly preferably those containing polyester fibers, more preferably those consisting only of polyester fibers.
Further, the shape of the fiber is not limited to a round shape, a triangular shape, a star shape, a flat shape, a C shape, a hollow shape, a well shape, a dock bone, or the like. From the viewpoint of washing durability, the fiber is preferably a modified cross-sectional yarn, and a modified cross-sectional yarn having a concave portion such as a trilobal section, an eight-leaf section, or a multi-lobe section is preferred.

The antibacterial fiber structure of the present embodiment uses the above-mentioned fibers, and is made of yarn, cotton (cotton), woven fabric, knitted fabric, non-woven fabric, synthetic leather, artificial leather, clothing, gloves, hat, special for exercise. Examples include clothes, lining, shoes, insoles, bags, tents, curtains, sheets, duvet covers, duvets, towels, mats, brushcases, laundry bags, etc. It is not limited.
Further, the antibacterial fiber structure of the present embodiment may be subjected to dyeing, printing, water repellent processing, deodorization processing, heat retention processing, ultraviolet shielding processing, flexible processing, antistatic processing, and the like. Moreover, in order to provide waterproofness, moisture-permeable waterproofness, or to obtain synthetic leather, on the surface of the antibacterial fiber structure of this embodiment (for example, one side of the antibacterial fiber fabric), about 3 μm to 1000 μm. A resin film may be separately laminated. Further, as such a resin film, for example, a resin film containing silver as described in Patent Document 3 may be used to add antibacterial properties.

Although the compound which elutes the silver ion of this embodiment will not be specifically limited if it is a compound which elutes the silver ion which acts as an antibacterial agent, As a specific compound, silver nitrate is mentioned. Further, other compounds may be used as long as they elute silver ions, and silver complexed with a polymer is also preferably used. Examples of the compound that elutes silver ions complexed with such a polymer include those containing a copolymer of a monomer containing a heterocyclic ring and a monomer not containing a heterocyclic ring. JP 2005-298507 A, JP The thing as described in 2005-299072 gazette etc. is mentioned.
Specifically, SILVADUR (trademark) 900 Antimicrobial provided by Rohm and Haas Japan Co., Ltd., Brian BG-1 (trademark) manufactured by Matsumoto Yushi Seiyaku Co., Ltd., CF-01 manufactured by J-Chemical Co., Ltd. Etc.
Only one type of compound that elutes silver ions may be used, or two or more types may be used in combination.
Such a compound that elutes silver ions may be chemically bonded directly to the fiber, or the compound that elutes silver ions and / or silver ions is a single molecule having two or more double bonds capable of radical polymerization. It may be chemically bonded to the following various monomers or polymers including the monomer and / or the obtained polymer. Moreover, the compound which elutes a silver ion may adhere to the fiber surface because the monomer which has two or more double bonds which can be radically polymerized acts as binder resin. Moreover, the compound which elutes a silver ion may be adhered to the fiber surface by using another binder resin. Moreover, these may be mixed.

The adhesion amount of silver to the antibacterial fiber structure of this embodiment is preferably 0.01 mg or more, more preferably 0.1 mg or more, further preferably 1 mg or more, and even more preferably, per 100 g of the antibacterial fiber structure. 10 mg or more is good.
If it is less than 0.01 mg per 100 g of the antibacterial fiber structure, it may not be possible to have sufficient washing durability. There is no particular upper limit, but if it exceeds 1000 mg, there is no cost advantage, and the resulting antibacterial fiber fabric may be colored (dull) by silver.
The antibacterial fiber structure of the present embodiment can provide an antibacterial structure having washing durability with a very small amount of silver.
As antibacterial agents, natural antibacterial agents such as catechin, chitin and chitosan, and known antibacterial agents such as zinc pyrithione and quaternary ammonium salts may be used in combination.

The monomer having two or more double bonds capable of radical polymerization according to this embodiment is preferably a divinyl monomer, and more preferably has a water absorption property, an antistatic property, a moisture absorption property, a moisture absorption property, and a soil removal property with respect to a synthetic fiber. From the viewpoint of imparting the above, a hydrophilic divinyl monomer is preferable. Examples of the hydrophilic divinyl monomer include divinyl monomers having an oxyethylene group.
More specifically, a divinyl monomer represented by the general formula [I] can be mentioned.

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

The monomer having two or more double bonds capable of radical polymerization may be used alone or in combination of two or more.
A polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization on the surface of the fiber is preferable from the viewpoint of washing durability. In this case, the fiber and the monomer may be polymerized to form a polymer, and the fiber and the monomer are not polymerized, and the polymer of the monomers forms a resin film on the surface of the fiber. In addition, both of these forms may exist.
Since the polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization is attached to the fiber surface, the amount of silver is very small, Even if the polymer is covered with a compound that elutes silver, an antibacterial fiber structure excellent in washing durability and having high antibacterial properties can be obtained.
Although not bound by a specific theory, it is considered that a crosslinked structure is formed while taking in a compound that elutes silver ions by polymerizing the monomer on the fiber surface. The silver ions contained in the crosslinked structure are considered to be one of the factors that improve the washing durability because they are not easily removed even after washing treatment. In addition, it is considered that a part of the formed crosslinked structure can be firmly fixed to the fiber surface via a chemical bond by radical polymerization of the monomer on the fiber surface. That is, it is presumed that the cross-linked structure itself holding silver ions is maintained at a high level of antibacterial property as a whole, coupled with improvement in washing durability. As described above, according to the present invention, since the decrease in the antibacterial level due to the drop-off of silver ions is remarkably suppressed, the amount of required silver to be first attached to the fiber structure can be greatly reduced.

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

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

  The monomer and carbodiimide group, aziridine group (ethyleneimine group), and a monomer or polymer compound containing an oxazoline group can be used singly or in combination.

In addition, as a compound other than a monomer having two or more double bonds capable of radical polymerization, a monomer having one or more polymerizable double bonds is also polymerized from the viewpoint of promoting the polymerization reaction. May be.
Monomers having one or more polymerizable double bonds include 2-acrylamido-2-methylpropanesulfonic acid, 2-allyloxy-2-hydroxypropanesulfonic acid, sodium styrenesulfonate, sodium isoprenesulfonate, sulfone. Ethyl methacrylate, sodium allyl sulfonate, sodium methacryl sulfonate and the like can be used. In the present invention, two or more of these monomers may be used. In particular, 2-acrylamido-2-methylpropanesulfonic acid is preferably used from the viewpoint of imparting polymerization efficiency and moisture absorption / release properties to the resulting fiber fabric.

In addition, when a monomer having one or more polymerizable double bonds has a sulfonic acid group, the sulfonic acid group is sodium ion, zinc ion, copper ion, nickel ion, manganese ion, silver ion, iron ion. Etc. may be substituted.
Moreover, from the viewpoint of preventing embrittlement of the fibers used, it is preferable that the fibers are substituted with sodium ions. In particular, sodium 2-acrylamido-2-methylpropanesulfonate is preferable.

  Other monomers having one or more polymerizable double bonds include acrylic acid, methacrylic acid, hydroxyethyl methacrylate, acrylonitrile, sodium styrene sulfonate, glycidyl methacrylate, acrylamide, vinyl pyridine, vinyl pyrrolidone and the like. Can be mentioned.

Further, the resin film formed on the fiber surface by a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization may have a thickness of less than 5 μm, from the viewpoint of air permeability and texture. Is preferably less than 1 μm. More preferably, it is less than 0.1 μm, and even more preferably less than 0.01 μm. Further, the lower limit value of the thickness of the resin film is generally 0.0005 μm, preferably 0.005 μm. The thickness of the resin film is ideally uniform, but it is acceptable that the thickness of the resin film in the concave portion on the fiber surface is increased, or that the thickness varies somewhat in a smooth portion.
When the obtained resin film is less than the above upper limit value, the resulting antibacterial fiber fabric has a soft texture and air permeability is not hindered. The fiber structure of this embodiment can have antibacterial fibers having durability even if a very thin resin film is formed on the surface of the fibers. In addition, what is necessary is just to confirm the thickness of a polymer using an electron microscope. In addition, the part in which the resin film was formed in the state which aggregated in the part where processing liquid accumulates, such as a fiber entanglement point between fiber and a thread | yarn, shall not be considered as the thickness of a polymer. The resin film only needs to be attached to at least a part of the fiber surface. When viewed as the coverage, the resin film generally has a fiber surface area of 20% or more, preferably 50, depending on the thickness of the resin film and the silver concentration. % Or more, more preferably 80% or more may be covered. Most preferably, almost the entire surface of the fiber is covered.
In addition, when the compound which elutes the said silver ion is adhered to the fiber surface as a granular material, it is good in the magnitude | size of the said granular material also being 5 micrometers or less.

Moreover, the antibacterial fiber structure of this embodiment is the antibacterial property of the JIS L1902 fiber product after washing according to the washing method of the high temperature accelerated washing method 50 times washing product defined by the Japan Fiber Technology Evaluation Council. Test method and antibacterial effect Quantitative test Bacterial fluid absorption method Bacterial species used: The bactericidal activity value measured according to Staphylococcus aureus is preferably 0 or more. More preferably, the bactericidal activity value after 100 times of washing (high temperature accelerated washing method, washing performed according to the washing method of the product specified for 50 times of washing) is more than 0.
The high temperature accelerated washing method is one that performs washing at a high temperature of 80 ° C., and by satisfying the standard, it is not only used in a general living environment, but also a medical facility and a product for a facility similar thereto, such as a white garment Antibacterial effect is expected to

  The antibacterial fiber structure of the present embodiment includes yarn, cotton (cotton), woven fabric, knitted fabric, non-woven fabric, synthetic leather, artificial leather, blouse, pants, underwear, jacket, coat, gloves obtained from these, General clothing such as hats, down jackets, and feathers, windbreakers, ski wear, sportswear such as swimwear, judo clothing, Yakke and Anorak, special work clothes such as shape-up suits, fire clothes, and white-collar health workers In addition, it can be used for various textile structures such as sheets for clothes, futon covers, sleeping bags, pillows, pillow covers, chair coverings, curtains, and car interior materials as well as clothes for persons conforming thereto. It is possible to provide a fiber structure having a soft texture, excellent antibacterial properties, and excellent durability in washing. Also, if the resin film is not provided separately, the air permeability is excellent.

Next, one manufacturing method of the antibacterial fiber structure of this embodiment will be described. In addition, this invention is not limited to the following manufacturing methods. In addition, some explanations of the matters described above are omitted.
The method for producing an antibacterial fiber structure of the present invention comprises a step of applying to a fiber a treatment liquid comprising a compound that elutes silver ions and a monomer having two or more double bonds capable of radical polymerization,
A polymerization step of polymerizing the monomer on the surface of the fiber.

The manufacturing method of the fiber structure of this embodiment has the process of applying the process liquid containing the compound which elutes a silver ion, and the monomer which has two or more double bonds in which radical polymerization is possible to a fiber.
The compound that elutes silver ions and the monomer having two or more double bonds capable of radical polymerization are as described above.
From the viewpoint of reducing the thickness of the resin film formed on the fiber surface by the polymer obtained by polymerization, the concentration of the monomer having two or more double bonds capable of radical polymerization in the treatment liquid is 20% by mass. The following is good, More preferably, it is 10 mass% or less, More preferably, 5 mass% or less is good.
The concentration of the compound that elutes silver ions is preferably 0.02 mg or more, more preferably 0.2 mg or more, still more preferably 2 mg or more, and even more preferably 20 mg or more in 100 ml of the solution in terms of silver.
If the concentration of silver in the solution is less than 0.02 mg, an antibacterial fiber fabric having sufficient washing durability may not be obtained.
Moreover, although there is no upper limit in particular, 2000 mg or less is preferable from the viewpoint of coloring the fiber fabric with silver and cost.

In addition, at least one compound consisting of a monomer or a polymer compound containing two or more polymerizable functional groups including a carbodiimide group, an aziridine group, an ethyleneimine group, and an oxazoline group, a polymerizable double A monomer having one or more bonds may also be included in the treatment liquid.
In addition, a catalyst, a polymerization initiator, a light stabilizer, an antioxidant, a surfactant, and the like may be added to the treatment liquid without departing from the purpose of this embodiment.
In the case of using a radical polymerization initiator, for example, inorganic polymerization initiators such as ammonium persulfate, potassium persulfate, and hydrogen peroxide, 2,2′-3 azobis (2-amidinopropane) dihydrochloride, 2 , 2′-3azobis (N, N′-dimethyleneisobutyramide) dihydrochloride, 2- (carbamoylazo) isobutylnitrile, and other organic polymerization initiators can be used. Further, a water-insoluble polymerization initiator such as benzoyl peroxide or azobisisobutylnitrile may be used by emulsifying with a surfactant such as anion or nonion. A redox polymerization initiator may be used.
The treatment liquid used in the present embodiment includes dyes, water repellents, antistatic agents, softeners, flame retardants, pH adjusters such as acids, alkalis, and buffers, etc. without departing from the purpose of the present embodiment. These compounds may be added. In addition, it is preferable to maintain the pH of the treatment liquid at 6 or more from the viewpoint of preventing silver discoloration. Furthermore, natural antibacterial agents such as catechin, chitin and chitosan, and known antibacterial agents such as zinc pyrithione and quaternary ammonium salts may be added as antibacterial agents.
As the solution, water or an organic solvent may be used as a solvent, or a mixture of water and an organic solvent may be used. The treatment liquid may be one obtained by dissolving the above-mentioned various compounds in a solvent, or may be a dispersion liquid or an emulsion liquid that is dispersed and emulsified in a solvent.

  As a method of applying the treatment liquid to the fiber, the treatment liquid may be applied to fibers of any shape, such as thread-like, cotton-like, woven fabric, knitted fabric, non-woven fabric, or sewed clothes. The padding method, spray method, dipping method, coating method and the like are not particularly limited.

The method for producing an antibacterial fiber fabric according to this embodiment includes a polymerization step of polymerizing a monomer having two or more double bonds capable of radical polymerization.
In order to polymerize the monomer with respect to the fiber after the treatment liquid is applied to the fiber and fix the monomer to the surface of the fiber, any means used for radical polymerization may be used to provide particularly durability. . For example, dry heat treatment, steam treatment, dipping method, cold batch method, microwave treatment, ultraviolet ray treatment, electron beam treatment and the like can be used. These means may be applied singly or in order to increase heating efficiency, for example, microwave treatment, ultraviolet treatment or electron beam treatment is used in combination with or before or after steam treatment or dry heat treatment. May be. In the case of dry heat treatment, microwave treatment, ultraviolet ray treatment, or electron beam treatment, it is preferable to treat in an inert gas atmosphere since the polymerization is difficult to proceed in the presence of oxygen in the air. Even in this case, it is preferable to seal with a sealing material.

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

After passing through the polymerization step, a soaping treatment may be performed as necessary to remove unfixed components contained in the treatment liquid. The soaping may be only water, but may contain an alkali agent, a surfactant, or the like. Further, it may be cold water or hot water of about 40 to 90 ° C.
Further, the treatment liquid may be applied a plurality of times, for example, treatment liquid application, steam treatment, soaping, drying, treatment liquid application, steam treatment, soaping, and drying may be repeated.
Moreover, you may give a calendar process, a tumbler process, a finishing set, etc.
By the production method of the present invention,
1. A compound that elutes silver ions and the above-mentioned various monomers or polymers and / or polymers obtained containing a monomer having two or more double bonds capable of radical polymerization are polymerized. Or the above-mentioned various monomers or polymers and / or polymers obtained by chemical bonding, or 2, wherein the eluted silver ion contains a monomer having two or more double bonds capable of radical polymerization. Or a compound obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization, or a compound that elutes silver ions (a compound that elutes silver ions) Including those that have the ability to adhere to the fiber surface themselves)
A compound that elutes silver ions adheres to the fiber surface.

  In addition, the antibacterial fiber structure of the present embodiment has a dyeing process, a printing process, a water repellent process, an antistatic process, a flexible process, an antibacterial and deodorant process, and an antibacterial process before or after applying the treatment liquid to the fiber surface. Processing such as SR processing, hydrophilic processing, and flameproofing processing may be performed. Also, a resin film obtained from a urethane resin, an acrylic resin, a silicone resin, a polyester resin, a nylon resin, a polytetrafluoroethylene resin, etc., before and after attaching a compound that elutes silver ions to a fiber fabric such as a woven fabric, a knitted fabric, or a nonwoven fabric. May be used as synthetic leather, or as an antibacterial fiber fabric imparted with waterproofness (moisture permeability and waterproofness if necessary).

EXAMPLES Hereinafter, although an Example is shown and this embodiment is described in detail, this invention is not limited by the following description.
Various physical properties in the present invention were measured by the following methods.
(1) Antibacterial property JIS L1902 Antibacterial test method and antibacterial effect of textile products Quantitative test Bacterial liquid absorption method Species: According to Staphylococcus aureus Bactericidal activity before washing and after high temperature accelerated washing method 50 times and 100 times The value was measured.
In addition, the antibacterial test method and antibacterial effect quantitative test of JIS L1902 textile product were measured. (Before washing)
(2) Laundry treatment Textile evaluation council, product certification department Washing method for SEK mark textile products Washing treatment is performed according to the high temperature accelerated washing method (washing method for products specified for 50 washings) did. Moreover, what used polyester as a fiber made the thing which repeated the said washing 50 times twice "100 washings."
In addition, those using nylon as the fiber are subjected to a washing treatment in accordance with the high-temperature accelerated washing method (product washing method specified for 10 washings). did.
(3) Observation of thickness and adhesion state of resin film Using a scanning electron microscope (SEMEDX Type H type: Hitachi Science Systems, Ltd.), the cross-section and surface of the fiber structure were observed at a magnification of 5000 times. The thickness was measured and the state of adhesion was observed. When the presence of the resin film could not be confirmed at a magnification of 5000 times, the thickness of the resin film was set to less than 0.1 μm. It should be noted that the portion where the resin film is formed in a state of being agglomerated in the portion where the treatment liquid is accumulated, such as between the fibers and the entanglement point of the yarn, is not regarded as the thickness of the resin film.
(4) Antistatic property JIS L1094 Antistatic property test method of woven fabric and knitted fabric The antistatic property before and after washing was measured according to the method of measuring the friction band voltage. The washing process was performed 20 times according to JIS L0217 103 method.
(5) Water Absorption JIS L1907 Water Absorption Test Method for Textile Products Water Absorption Rate Method Water absorption before and after washing was measured according to the dropping method. The washing process was performed 20 times according to JIS L0217 103 method.
(6) Texture: The fiber fabric was touched and evaluated.

(Examples 1-4)
Plain fabric (polyester for both warp and weft yarns. Trilobal cross section yarn. Warp yarn 56 dtex, 36 filaments, weft yarn 83 dtex, 72 filaments, density warp 261 / 2.54 cm, weft 108 / 2.54 cm) After scouring by a conventional method and reducing the continuous alkali, it was dyed black using a disperse dye and set at 160 ° C.
Next, the treatment liquid described in Examples 1 to 4 in Table 1 was applied to the woven fabric by a padding method. The pickup was 50% by mass.

Subsequently, treatment (polymerization) was performed for 20 minutes in an atmospheric steamer at 105 ° C. Next, it was washed with hot water at 70 ° C., dried at 120 ° C., and finished at 160 ° C. to obtain a fiber fabric.
The performance of the obtained fiber fabric is shown in Table 1.

(Comparative Example 1)
In the same manner as in Example 1, the treatment liquid described in Comparative Example 1 in Table 1 was applied to the plain fabric scoured, reduced, dyed and set by the padding method, dried at 120 ° C., and finished at 160 ° C. A fiber fabric was obtained by setting.
The performance of the obtained fiber fabric is shown in Table 1.

(Example 5)
Plain fabric (warp yarn, polyester. 83 dtex, 36 filaments, weft yarn, blended yarn of polyester and cotton. Blending ratio (mass ratio) Polyester: Cotton = 80: 20. Polyester: 83 dtex 36 filament. Cotton. 45th. 131 pieces / 2.54 cm, width 101 pieces / 2.54 cm) were scoured by a conventional method, dyed blue with a disperse dye, and set at 150 ° C.
Next, the treatment liquid described in Example 5 in Table 2 was applied to the fabric by a padding method.

Subsequently, treatment (polymerization) was performed for 20 minutes in an atmospheric steamer at 105 ° C. Next, it was washed with hot water at 70 ° C., dried at 120 ° C., and finished at 160 ° C. to obtain a fiber fabric.
The performance of the obtained fiber fabric is shown in Table 2.

(Examples 6 and 7)
Plain woven fabric (warp yarn, weft yarn is 6-nylon, round cross section yarn, 78 dtex, 68 filament, density warp 125 / 2.54cm, weft 88 / 2.54cm) by conventional method, acid dye And dyed blue and set at 150 ° C.
Next, the treatment liquids described in Examples 6 and 7 in Table 2 were applied to the fabric by a padding method.

Subsequently, treatment (polymerization) was performed for 20 minutes in an atmospheric steamer at 105 ° C. Next, it was washed with hot water at 70 ° C., dried at 120 ° C., and finished at 160 ° C. to obtain a fiber fabric.
The performance of the obtained fiber fabric is shown in Table 2.

(Example 8)
Plain woven fabric (both warp and weft triacetate fiber, irregular cross-section yarn with multiple recesses, density 125 / 2.54cm, 88 weft / 2.54cm) is scoured in the usual way and blue with disperse dye Dyeing and setting at 150 ° C.
Next, the treatment liquid described in Example 8 in Table 2 was applied to the fabric by a padding method.

Subsequently, treatment (polymerization) was performed for 20 minutes in an atmospheric steamer at 105 ° C. Next, it was washed with hot water at 70 ° C., dried at 120 ° C., and finished at 160 ° C. to obtain a fiber fabric.
The performance of the obtained fiber fabric is shown in Table 2.

  The antibacterial fiber fabric of the present invention is a fiber fabric having antibacterial properties using silver and is excellent in antibacterial washing durability, and also has a soft texture, underwear, blouse, shirt, work clothes, dress, Not only general clothing such as jumpers, but also a wide variety of items such as pillows, futon sides, sleeping bags, shoes, chairs, vehicle interior materials, windbreakers used as sports wear, ski / snowboard wear, judo clothes, etc. Can be used.

Claims (5)

  An antibacterial fiber structure obtained by adhering a compound eluting silver ions and a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization to the surface of the fiber.   Antibacterial test method and antibacterial effect of JIS L1902 textile product after 50 washings by high temperature accelerated washing method Quantitative test Bacterial liquid absorption method Bacterial species used: Bactericidal activity value measured according to Staphylococcus aureus is over 0 The antibacterial fiber structure according to claim 1.   The antibacterial fiber structure according to claim 1 or 2, wherein the fiber is a synthetic fiber or a semi-synthetic fiber.   The antibacterial fiber structure according to any one of claims 1 to 3, wherein a thickness of a polymer obtained by polymerizing a monomer having two or more double bonds capable of radical polymerization is less than 5 µm. Applying to the fiber a treatment liquid comprising a compound that elutes silver ions and a monomer having two or more double bonds capable of radical polymerization;
A polymerization step of polymerizing the monomer on the surface of the fiber;
For producing an antibacterial fiber structure.