JPH10263497A - Prevention of soil of fiber product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow fibers not to be soiled directly and improve soil-preventing effect by a method wherein a covering agent capable of preventing a surface of a fiber product from coming into contact with soil is allowed to be present and the covering agent is removed after the fiber product is used. SOLUTION: A covering agent consisting of carboxymethylcellulose, e.g. 2 wt.% aqueous solution is added to tap water. For instance, a cotton knitted underwear is immersion-treated and then allowed to made an evaluation sample after dewatered and dried. The sample underwear which is treated with the covering agent is worn for a specified period and then washed by using a nonionic surface active agent and a removing agent containing cellulose- decomposing enzyme together. After the sample is dewatered and naturally dried, the effect is comparison-evaluated (visual decision) by a plurality of panelists under white light. As a result, an excellent soil-preventing effect is acknowledged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for preventing stains on textile products. More specifically, dirt that is difficult to remove only by washing with a household clothing detergent, for example, partial soiling of the soles of socks, collars and sleeves of shirts, and discoloration of underwear or shirts of white or pale colors (yellowish or darkening) The present invention provides a method for preventing stains on textiles, which can prevent the adhesion of the fibers and can easily remove the stains even if they adhere.

[0002]

2. Description of the Related Art Such as soiling of soles of socks, collars and sleeves of shirts, and discoloration (yellowing or darkening) of underwear and shirts of white or light colors, Of the dirt that is difficult to remove by ordinary laundry at home, partial dirt is often washed with a hand-wash, brush or the like using an application-type detergent or a solid soap. In this case, there is a problem that it takes much time and effort for the firs, and there are problems such as hand-washing with detergent and soap and damage to the cloth due to the firs. For discoloration stains, immerse in a detergent or bleach solution and then wash, add a detergent and add a bleach at the time of washing, or use a detergent to which a bleach is added in advance. I am doing laundry. In this case, there are problems such as time and labor required for immersion, time required for measuring the detergent and the bleach, and the amount of the bleach on the detergent cannot be adjusted.

[0003] Further, any dirt is a treatment method after the dirt is attached to the clothing, and since the dirt is attached to the complicated fiber structure, sufficient removal of the dirt is performed. That is, the cleaning effect has not been obtained.

On the other hand, a treatment is performed before dirt adheres,
Antifouling agents that prevent dirt from directly adhering to the fibers are commonly used. However, existing antifouling agents are water repellent and / or
Or, in many cases, the main component is a group having oil repellency, and in order to wash off dirt attached to the base together with the base, dry cleaning with a solvent is required.
Not suitable for washing at home. Therefore, in general, it is not effective to use a conventional antifouling agent for clothes that are washed at home.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, have found that
Existence of a coating agent capable of preventing direct contact between the textile and dirt, and after using the textile product, removing the coating agent, thereby excellently preventing dirt adhesion to the textile product and removing dirt. The inventors have found that the present invention has an effect, and have completed the present invention.

[0006] That is, the present invention is characterized in that a coating agent capable of preventing contact between the textile and dirt is present on the surface of the textile, and the coating is removed after using the textile. The present invention provides a method for preventing contamination of textile products.

[0007] In the present invention, the term "coating agent" is used to prevent direct contact between textiles and dirt. For example, a coating which forms a film on the surface of textiles, or a gap between fibers constituting textiles is used. What is filled is mentioned. Hereinafter, the method for preventing staining of textile products of the present invention will be described.

The coating agent used in the present invention is preferably a water-soluble or alkali-soluble polymer in consideration of the removal of stains during washing. For example, modified starch, cellulose derivative, acrylic acid-based polymer (homopolymer or copolymer), polyvinyl alcohol, polyvinylpyrrolidone or a derivative thereof, vinyl acetate-based polymer (homopolymer or copolymer), styrenesulfonic acid-based polymer (homopolymer or copolymer) , Polyalkylene-modified silicone, cation-modified silicone, anion-modified silicone, and the like.

As a coating agent, fine particles which cannot be recognized by the human eye are filled in advance in the hollow portions of the fibers or the fiber gap where the dirt molecule substance adheres, so that the dirt does not enter into the complicated fiber structure. It is conceivable to do so. As such a filling type coating agent, water-insoluble fine particles having an average particle diameter of 1 μm or less are preferable, and one or more selected from metal oxides and synthetic resins are preferable. Specifically, colloidal silica, alumina sol, sol of a metal oxide such as titania, silicon dioxide, powders containing other metal oxides, silicone powder, nylon powder, and other three-dimensional crosslinked organic resin are mentioned. .

[0010] These coating agents need to be applied to the fiber product before use of the fiber product, but the amount of the coating agent to be applied may be appropriately determined in consideration of the type of the fiber product. The form of the coating agent may be either solid or liquid, and may be gel, paste, aerosol, or the like. Therefore,
After the coating agent is dissolved in a liquid (mainly water), the textile is immersed, the gel or paste-like coating agent is directly applied to the textile, or a liquid or aerosol is applied. Examples of the method include spraying onto clothing using a jetting container, a tool and an appropriate propellant. In particular, in the case of partial stains, application and spraying can make the components effectively act, and in the case of discolored stains, immersion is preferable because it does not require much labor. Further, in order to simplify the treatment at home, it is preferable to carry out the coating treatment during the ordinary washing step or subsequent to the washing step. In this case, the coating agent may be added together with the detergent, may be added in a rinsing step after the washing step, or may be applied to a fiber product in a state containing water after dehydration. . In particular, for a partial stain, a method such as spraying and spraying on a fiber product before drying after washing and dehydration is simple and preferable.

[0011] The method for preventing staining of textile products according to the present invention includes a step of removing the coating agent from the textile products after using the textile products treated with the coating agent as described above. The coated fiber product is stained by use, but in the present invention, since the fiber product is coated with the coating material, the fiber is not directly contaminated, and is excellent in the stain prevention effect.

The method of removing the coating agent differs depending on the type of the selected coating agent, and it is necessary to select a means capable of efficiently removing the coating agent. From the viewpoint of simplicity of the treatment, it is preferable to select an appropriate removing agent, add the removing agent in any of the washing steps, and remove the coating agent attached to the textile.

[0013] As the removing agent, the selected coating agent is dissolved,
What can be removed from the textile by dispersion or the like is used, and examples thereof include an enzyme, a surfactant, an alkalizing agent, and an adsorbent, and the amount of use can be appropriately determined according to the coating agent.

As the enzyme, those using a coating agent as a substrate are used. For example, when carboxymethylcellulose is used as the coating agent, cellulase is used as a removing agent, and when modified starch is used as a coating agent, amylase is used as a removing agent. Is used. When the coating agent is a vinyl acetate polymer, an alkaline aqueous solution is used as a removing agent, and when the coating agent is a water-soluble polymer, a surfactant aqueous solution is used as a removing agent.

As the surfactant, those generally used in detergents can be used without particular limitation. Specifically, it is at least one selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants and amphoteric surfactants exemplified below.
For example, a selection may be made of only the same type as in the case of selecting a plurality of nonionic surfactants, or various types of selection may be made in the case of respectively selecting from an anionic surfactant and a nonionic surfactant. Multiple items may be selected.

Examples of the nonionic surfactant include the following, including those described above. That is, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbite fatty acid ester, polyethylene glycol fatty acid alkyl ester, polyoxyethylene polyoxypropylene alkyl ether polyoxyethylene castor oil, polyoxyethylene alkylamine, glycerin fatty acid ester And higher fatty acid alkanolamides, alkylglucose amides and alkylamine oxides.

Among them, particularly, as a nonionic surfactant, a linear or branched primary or secondary having 10 to 18 carbon atoms.
It is preferable to use a polyoxyethylene alkyl ether which is an ethylene oxide adduct of a secondary alcohol and has an average addition mole number of 5 to 15. More preferably, an adduct of ethylene oxide of a linear or branched primary or secondary alcohol having 12 to 14 carbon atoms, and a polyoxyethylene alkyl ether having an average addition mole number of 6 to 10 is used. desirable.

Examples of the anionic surfactant include alkyl benzene sulfonate, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, fatty acid salt, α-olefin sulfonate, α-sulfo fatty acid salt or ester salt, alkyl and Examples thereof include alkenyl ether carboxylate, amino acid surfactant, N-acyl amino acid type surfactant, and the like, preferably alkyl benzene sulfonate, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, and the like.
The counter ion of these anionic surfactants is selected from the group consisting of cations such as sodium, potassium, magnesium, calcium and ethanolamine, and mixtures thereof.

Examples of the cationic surfactant include quaternary ammonium salts such as alkyltrimethylamine salts. Examples of the double-sided surfactant include amphoteric surfactants such as carboxy type and sulfobetaine type.

Further, examples of the alkalizing agent include sodium carbonate, sodium silicate, sodium borate and the like.

In order to prevent the adhesion of stains to textiles and to keep the textiles in good condition before and after use, (1) prevent the stains from directly adhering to the fibers, (2) directly or indirectly attach the fibers. And (3) to prevent the detached dirt from adhering to the fiber again. The present invention can achieve the above object (1) by using a coating agent, and the above objects (2) and (3) by performing a treatment with a remover in a washing step. . As a textile product that is the subject of the present invention,
One or more textiles selected from socks, shirts and underwear are preferred.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below by way of examples, but the present invention is not limited thereto.

Example 1 A white underwear (commercially available) made of cotton was used as a coating agent, worn and removed in the following manner to evaluate the antifouling effect.

(1) Coating agent treatment Tap water was treated with carboxymethyl cellulose (2%, 30%).
(C, about 10 cP) A coating agent consisting of 2% by weight of water and the balance of water is added at the following ratio, and after immersion treatment for 10 minutes, dehydration and drying are performed.・ Underwear (made of cotton knit) 1.5 kg (5 pieces are for evaluation, the rest is adjusted cloth) ・ 7.5 liters of tap water ・ 50 g of coating agent (2) Wear and removal treatment Wear underwear treated with the above coating agent Later (5 people, 2 days)
The following remover is added together with a detergent (Kao Corp., Attack) at the following ratio and washed.・ Underwear 1.5kg ・ Tap water 30 liters ・ Remover 10g ・ Detergent 25g <Remover> ・ Polyoxyethylene (average number of moles of ethylene oxide 8 added) lauryl ether 1% by weight ・ Cellulose degrading enzyme (Cellzyme 0.1T, Novo)・ Nordisk Co.) 0.001% by weight ・ Sodium silicate 25% by weight ・ Sodium sulfate balance After dehydration and natural drying, five panelists under white light.
Visual judgment was made according to the following criteria, in comparison with the underwear (control) which was not subjected to the coating agent treatment and the removing agent treatment and was washed.
Table 1 shows the results. <Judgment criteria> +2: Whiter than control +1: Slightly whiter than control 0: Same as control -1: Slightly whiter than control -2: Whitener than control

[0025]

[Table 1]

Example 2 Using a white shirt (commercially available) made of a blended fiber of polyester / cotton = 65/35, a coating agent treatment, wearing and removal treatment were carried out by the following methods to evaluate the antifouling effect. did.

(1) Coating agent treatment In tap water, carboxymethyl cellulose (2%, 30%)
(C, about 10 cP) A coating agent consisting of 2% by weight of water and the balance of water is added at the following ratio, and after immersion treatment for 10 minutes, dehydration and drying are performed. -Shirt 1.0 kg (5 clothes for evaluation, the rest is adjusted cloth)-Tap water 4.0 liter-Coating agent 100 g (2) Wearing and removal treatment After wearing the shirt treated with the above coating agent (5 persons, For 2 days), the following remover is added together with a detergent (manufactured by Lion Corporation, High Top) at the following ratio and washed. -Shirt 1.0 kg-Tap water 30 liter-Remover 50 g-Detergent 25 g <Remover>-Polyoxyethylene (average number of moles of ethylene oxide added: 8) lauryl ether 1% by weight-Cellulose degrading enzyme (same as in Example 1) ) 0.0
1% by weight ・ Sodium silicate 25% by weight ・ Sodium sulfate The remainder After dehydration and air drying, five panelists under white light.
Compared to a shirt (control) that was not washed with a coating agent or a remover and was washed, the visual judgment was made according to the following criteria. Table 2 shows the results. <Judgment criteria> +2: Whiter than control +1: Slightly whiter than control 0: Same as control -1: Slightly whiter than control -2: Whitener than control

[0028]

[Table 2]

Example 3 Using a white sock (commercially available) made of a blended fiber of cotton / acryl = 60/40, a coating treatment was carried out by the following method.
Wearing and removal treatment was performed to evaluate the antifouling effect.

(1) Coating agent treatment After the normally washed socks are dehydrated, the following coating agents are sprayed using a manual sprayer and then dried. Spraying of the coating agent was performed on the toe portion and the heel portion of the sock 3 to 4 times, respectively, and the discharge amount per one time was about 0.5 g. <Coating agent>-10 g of carboxymethylcellulose-5 g of polyether-modified silicone-85 g of water (2) Wearing and removal treatment After wearing the socks treated with the above coating agent (5 persons, 1 day),
The following remover is added together with a detergent (manufactured by Lion Corporation, High Top) at the following ratio and washed.・ Sock 1.0kg (5 pairs for evaluation, the rest is adjusted cloth) ・ 30 liters of tap water ・ 10g of remover ・ 25g of detergent <Remover> ・ 1% by weight of cellulolytic enzyme (same as in Example 1) ・Sodium citrate 19% by weight ・ Sodium silicate 25% by weight ・ Sodium sulfate 55% by weight After performing the above steps (1) and (2) five times, the coating agent treatment was carried out by five panelists under white light. Compared to the socks (control) that had not been treated with the remover and had been washed, visual judgment was made according to the following criteria. Table 3 shows the results. <Judgment criteria> +2: Whiter than control +1: Slightly whiter than control 0: Same as control -1: Slightly whiter than control -2: Whitener than control

[0031]

[Table 3]

Claims (11)

[Claims] 1. A textile product wherein a coating agent capable of preventing contact between the textile product and dirt is present on the surface of the textile product, and the coating agent is removed after using the textile product. How to prevent dirt. 2. The method according to claim 1, wherein a treatment is carried out in which a coating agent is present on the surface of the textile product, following the cleaning treatment of the textile product. 3. The method according to claim 1, wherein the coating agent is a water-soluble polymer capable of forming a film on the surface of the textile. 4. The method according to claim 3, wherein the coating agent is removed by an enzyme capable of decomposing the water-soluble polymer. 5. The method according to claim 4, wherein the coating agent is carboxymethylcellulose and the enzyme is cellulase. 6. The method according to claim 4, wherein the coating agent is modified starch and the enzyme is amylase. 7. The method according to claim 3, wherein the coating agent is removed by using a substance capable of dissolving the water-soluble polymer. 8. The method according to claim 1, wherein the coating agent is fine particles having a particle size that can exist between fibers of the textile product. 9. The method according to claim 8, wherein the fine particles are water-insoluble fine particles having an average particle size of 1 μm or less. 10. The method according to claim 8, wherein the fine particles are at least one selected from metal oxides and synthetic resins. 11. The method according to claim 1, wherein the textile is at least one selected from socks, shirts and underwear.