Processing methods for textile products

Abstract

This invention provides a means to suppress the occurrence of wrinkles in textile products caused by the washing process. [Solution] A method for processing textile products, comprising: step 1: drying the textile products until the moisture content is 1 to 40%; step 2: treating the textile products from step 1 with a textile processing agent composition; and step 3: further drying the textile products from step 2, wherein the textile processing agent composition contains (A) (A1) a silicone compound and / or (A2) a cationic surfactant, and (B) at least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms.

Description

[Technical Field]

[0001] The present invention relates to a method for processing textile products. [Background technology]

[0002] In recent years, due to the increase in dual-income households and the resulting decrease in time spent on housework, as well as the widespread adoption of business casual attire in the workplace, there has been an increase in textile products that emphasize wrinkle resistance and non-iron properties. However, even with textile products advertised as wrinkle-resistant or non-iron, wrinkles may still appear and become noticeable during wear, storage, or washing and drying (especially when using a dryer), depending on the material and color. Ironing is one way to remove wrinkles. However, ironing is very time-consuming, and depending on the form and material of the textile product, advanced ironing techniques may be required. Another method for removing wrinkles is using a steam press. However, steam pressing requires specialized equipment, making it difficult to do at home. Another method for removing wrinkles is the use of textile treatment agents (Patent Documents 2-10). Patent document 6 discloses a wrinkle removal method that includes the step of applying a composition containing a specific water-soluble solvent such as hexylene glycol and water to wrinkled areas of a textile product and leaving it to stand. However, this method makes it difficult to completely remove deep wrinkles from textile products. Patent documents 7 to 10 disclose wrinkle removal methods that include steps such as drying a textile product sprayed with a fabric wrinkle-suppressing composition in a dryer, air drying, and ironing. In addition, there are known methods for treating textile products with the aim of inactivating viruses attached to them (Patent Document 1). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2015-63771 [Patent Document 2] Japanese Patent Publication No. 2003-20561 [Patent Document 3] Japanese Patent Publication No. 2002-115182 [Patent Document 4] Japanese Patent Publication No. 2004-211232 [Patent Document 5] Special Publication No. 2002-522656 [Patent Document 6] Japanese Patent Application Publication No. 10-25660 [Patent Document 7] Special Publication No. 10-508911 [Patent Document 8] Special Publication No. 2002-513077 [Patent Document 9] Special Publication No. 2002-531712 [Patent Document 10] Japanese Patent Application Publication No. 64-6174 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] The present inventors have set the objective of providing a means to suppress the occurrence of wrinkles in textile products caused by washing processes (particularly drying processes using a dryer). [Means for solving the problem]

[0005] As a result of diligent investigation into the aforementioned problems, the inventors have found that when textile products dried to a specific moisture content are treated with a textile product treatment agent containing specific components and then dried again, the occurrence of wrinkles in the textile products is significantly suppressed. The present invention is based on this finding.

[0006] In other words, the present invention relates to the following [1] to [7]. [1] A method for processing textile products, comprising the following steps 1 to 3: Step 1: The process of drying the textile product until its moisture content is 1-40%. Step 2: A step of treating the textile product subjected to Step 1 with a textile treatment agent composition, and Step 3: Further drying the fiber product subjected to Step 2 comprising where the moisture content of the fiber product is a value obtained by the following calculation formula 1 Moisture content (%) = (B - A) / A × 100 (Calculation formula 1) (wherein B is the mass of the fiber product after performing Step 1 A is the mass of the untreated fiber product after standing for 24 hours at 20°C and a relative humidity of 40% RH); the fiber treatment agent composition contains the following components (A) to (B): (A) (A1) a silicone compound and / or (A2) a cationic surfactant, and (B) at least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms the method as described above. [2] In Step 1, drying the fiber product until its moisture content becomes 15% to 5%, and in Step 2, treating the fiber product using 50 to 1200 ml of the fiber treatment agent composition per 1.5 kg of the fiber product, the method as described in [1] above. [3] The method as described in [1] above, wherein the component (A1) is a polyether-modified silicone. [4] The component (A2) has the general formula (E-1): JPEG2026103929000001.jpg4098 (in the general formula R is, independently of each other, a linear or branched alkyl group having 1 to 二十四 carbon atoms (the alkyl group may be substituted so as to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), a linear or branched alkyl group having 1 to 二十四 carbon atoms substituted with a phenyl group (the alkyl group may be substituted so as to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or A linear or branched alkyl group having 1 to 24 carbon atoms substituted to have a phenylene group in the alkylene chain (the alkyl group may be further substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or The three R atoms may, together with the nitrogen atom to which they are bonded, form a pyridine ring. X - The method according to [1] above, wherein the compound is represented by ). [5] The method according to [1], wherein component (B) is a primary alcohol having 2 to 3 carbon atoms. [6] The method according to [1], wherein component (A) is (A1) a silicone compound and (A2) a cationic surfactant. [7] A textile treatment agent composition for use in the method for treating the textile products described in [1] above, comprising the following components (A) to (B): (A)(A1) Silicone compounds and / or (A2) Cationic surfactants, and (B) At least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms. A fiber treatment agent composition containing the following: [Effects of the Invention]

[0007] As shown in the embodiments described later, the present invention can suppress the occurrence of wrinkles in textile products caused by washing processes (particularly drying processes using a dryer). Furthermore, the present invention can achieve the suppression of wrinkles while suppressing the occurrence of "stains" caused by the textile treatment agent composition. Therefore, the present invention can provide a method for processing textile products that have new added value. [Modes for carrying out the invention]

[0008] [Step 1: Drying the received fibers] In step 1, the textile product is dried until it reaches a predetermined moisture content. [Textile products] There are no particular restrictions on the types of textile products. Examples of textile products include dress shirts, T-shirts, polo shirts, blouses, underwear, functional innerwear, chinos, suits, slacks, skirts, stockings, tights, jackets, coats, knitwear, jeans, pajamas, cushions, seat cushions, sofas, pillowcases, sheets, bed pads, pillows, futons, bed covers, blankets, mattresses, cloth masks, and shoes. There are no particular restrictions on the materials used in textile products. Examples of textile materials include natural fibers such as cotton, wool, and linen; synthetic fibers such as polyester, nylon, and acrylic; semi-synthetic fibers such as acetate; regenerated fibers such as rayon, Tencel, and polynosic; and blends, woven, and knitted products of these materials.

[0009] [Moisture content of textile products] The drying in step 1 is carried out until the moisture content of the textile product is 1-40%, preferably 5-15%. The moisture content of textile products refers to the value calculated using formula 1 below. Moisture content (%)=(BA) / A×100 (calculation formula 1) In formula 1, B is the mass of the textile product after process 1 has been carried out. In formula 1, A is the mass of an untreated textile product (a textile product that has not been subjected to steps 1 to 3 of the treatment method of the present invention) after being left to stand for 24 hours at 20°C and 40 RH relative humidity.

[0010] [Drying means] The drying method in step 1 is not limited. Examples of drying methods include drying using a dryer and natural drying (including indoor drying and sun drying). In particular, the present invention can be suitably used for drying using a dryer, which tends to cause wrinkles in textile products.

[0011] [Drying using a dryer] There are no restrictions on the type of dryer. Examples of dryers include washer-dryers with drying functions and standalone clothes dryers. An example of a washer-dryer is a drum-type washer-dryer. The average temperature of the drying process is not particularly limited, but is preferably 30°C or higher, and more preferably 35-65°C. When the average temperature of the drying process is 30°C or higher, the drying time in step 1 is shortened, and the occurrence of wrinkles can be further suppressed. The weight of the textile product to be put into the dryer can be set appropriately according to the processing capacity of the dryer, but in the case of a dryer with a drying capacity of 7 kg, the weight of the textile product is preferably 7 kg or less, and more preferably 3 kg or less. When the weight of the textile product is 7 kg or less, the drying time in step 1 is shortened and the occurrence of wrinkles can be further suppressed. If step 1 is carried out using a dryer, after step 1 is completed, the textile product may be removed from the dryer and step 2 may be carried out, and then it may be returned to the same dryer and step 3 may be carried out.

[0012] [Process 2] In step 2, the textile product that has been subjected to step 1 is treated with a textile treatment agent composition. The fiber treatment agent composition contains the following components (A) and (B) as essential components.

[0013] [(A) Component: Silicone compound and / or cationic surfactant] (A) Ingredient is added to suppress the formation of wrinkles in textile products. Component (A) is (A1) a silicone compound and / or (A2) a cationic surfactant. Components (A1) and (A2) are described below.

[0014] [(A1) Component: Silicone compound] (A1) As component, any silicone compound known in the field of fiber treatment agents can be used without particular limitation. The molecular structure of component (A1) may be linear, branched, or cross-linked. Component (A1) may be a modified silicone compound. The modified silicone compound may be modified with one or more organic functional groups. Component (A1) can be used in oil form. Component (A1) can also be used in emulsion form dispersed with any emulsifier. Examples of component (A1) include dimethyl silicone, polyether-modified silicone, methylphenyl silicone, alkyl-modified silicone, higher fatty acid-modified silicone, methyl hydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, and amino-modified silicone. Among these, polyether-modified silicone, which offers a high compounding effect, is preferred.

[0015] Examples of polyether-modified silicones include copolymers of alkylsiloxane and polyoxyalkylene. The alkyl group of the alkylsiloxane preferably has 1 to 3 carbon atoms. The alkylene group of the polyoxyalkylene preferably has 2 to 5 carbon atoms. Among these, copolymers of dimethylsiloxane and polyoxyalkylene (polyoxyethylene, polyoxypropylene, random or block copolymers of ethylene oxide and propylene oxide, etc.) are preferred.

[0016] Examples of polyether-modified silicones include compounds represented by the following general formula (EI). [ka]

[0017] In general formula (E-1), -Z is independently -R, -OR, -OH, -OXR, or -OXH, where R is a saturated or unsaturated linear or branched hydrocarbon group having 1 to 4 carbon atoms, which may be the same or different. -Z is preferably -R or -OH. -R is preferably a saturated hydrocarbon group (alkyl group) such as a methyl group, ethyl group, propyl group, or butyl group, with the methyl group being particularly preferred. X is a polyoxyalkylene group. Specific examples include polyoxyethylene, polyoxypropylene, and polyoxybutylene groups. It may be one of these groups added alone, or different types of oxyalkylene groups such as oxyethylene units, oxypropylene units, or oxybutylene units may be arranged in a block or random manner. In any case, the mass ratio of the polyoxyethylene chain portion in X is preferably 10 to 50% by mass, more preferably 15 to 45% by mass, and particularly preferably 20 to 35% by mass based on the mass of the entire molecule.

[0018] In the general formula (E-1), -Y is -R 1 -O-X-R 2 or -O-X-R 2 Preferably, it is -O-X-R 2 and R 1 is a saturated or unsaturated straight-chain or branched hydrocarbon group having 1 to 4 carbon atoms, R 2 is a hydrogen atom or a saturated or unsaturated straight-chain or branched hydrocarbon group having 1 to 4 carbon atoms, X is as defined above. R 1 As R, saturated hydrocarbon groups (alkylene groups) such as methylene group, ethylene group, propylene group, and butylene group are preferred, and among them, propylene group is particularly preferred. R 2 As R, a hydrogen atom or saturated hydrocarbon groups (alkyl groups) such as methyl group, ethyl group, propyl group, and butyl group are preferred, and a hydrogen atom or methyl group is particularly preferred. In the general formula (E-1), L, M, and N each represent the average value of the number of each repeating unit. L is 0 to 50, preferably 0 to 10, more preferably 0 to 3, M is 1 to 1000, preferably 1 to 300, more preferably 1 to 50, N is 10 to 10000, preferably 20 to 3000, more preferably 20 to 500.

[0019] Another specific example of a polyether-modified silicone is the compound represented by the following general formula (E-II). [ka]

[0020] In the general formula (E-II), M, N, a, and b represent the average degree of polymerization, and R represents hydrogen or an alkyl group. M is 10 to 10000, preferably 50 to 1000, and more preferably 100 to 300. N is 1 to 1000, preferably 5 to 300. Furthermore, it is preferable that M > N. a is 2 to 100, preferably 5 to 50, and more preferably 5 to 20. b is between 0 and 50, preferably between 0 and 10. R is preferably hydrogen or an alkyl group having 1 to 4 carbon atoms, and more preferably an alkyl group having 1 to 4 carbon atoms.

[0021] Polyether-modified silicones can generally be produced by an addition reaction between an organohydrogenpolysiloxane having a Si-H group and a polyoxyalkylene alkyl ether (e.g., polyoxyalkylene allyl ether) having a carbon-carbon double bond at its terminus. The addition reaction product may contain trace amounts of unreacted raw materials such as polyoxyalkylenes or silicones having carbon-carbon double bonds at their terminal ends, solvents used in production such as ethanol and isopropyl alcohol, and catalysts such as platinum-based catalysts, but these do not affect the effects of the present invention.

[0022] A commercially available example of a polyether-modified silicone is: SH3771M, SH3772C, SH3772M, SH3775C, SH3775M, SH3748, SH3749, SF8410, SH8700, BY22-008, SF8421, SILWET L-7001, SILWET L-7002, SILWET L-7602, SILWET L-7604, SILWET FZ-2104, SILWET FZ-2120, SILWET FZ-2161, SILWET FZ-2162, SILWET FZ-2164, SILWET FZ-2171, ABN SILWET FZ-F1-009-01, ABN SILWET FZ-F1-009-02, ABN SILWET FZ-F1-009-03, ABN SILWET FZ-F1-009-05, ABN SILWET FZ-F1-009-09, ABN SILWET FZ-F1-009-11, ABN SILWET FZ-F1-009-13, ABN SILWET FZ-F1-009-54, ABN SILWET FZ-2222, KF352A, KF6008, KF615A, KF6016, KF6017, manufactured by Shin-Etsu Chemical Co., Ltd., Examples include TSF4450 and TSF4452 manufactured by GE Toshiba Silicone Co., Ltd.

[0023] Polyether-modified silicones with an HLB of 13 or less, preferably 10 or less, and more preferably 7 or less, are preferred due to their high blending effect. Specific examples of polyether-modified silicones with an HLB of 13 or less include SH3771M, SH3775C, SH3772C, and SH3775M, all manufactured by Toray Dow Corning.

[0024] (A1) The component is readily available on the market or can be synthesized by known methods.

[0025] (A1) The component may be a single type or multiple types may be used in combination.

[0026] The content of component (A1) is not particularly limited as long as the purpose of the formulation is achieved, but is preferably 0.05 to 1.0% by mass, and more preferably 0.1 to 0.7% by mass, relative to the total mass of the fiber treatment agent composition. A content of 0.05% by mass or more yields a high formulation effect. A content of 1.0% by mass or less shortens the drying time in step 3 described later, and further suppresses the occurrence of wrinkles.

[0027] [(A2) Component: Cationic surfactant] (A2) Examples of component (A2) include quaternary ammonium compounds, which are quaternary amines, with quaternary ammonium compounds being preferred. As a quaternary ammonium compound, the compound represented by the following general formula (E-1) is preferred.

[0028] [ka] (In the general formula, R is independent of each other. A linear or branched alkyl group having 1 to 24 carbon atoms (the alkyl group may be substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), A linear or branched alkyl group having 1 to 24 carbon atoms substituted with a phenyl group (the alkyl group may be substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or A linear or branched alkyl group having 1 to 24 carbon atoms substituted to have a phenylene group in the alkylene chain (the alkyl group may be further substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or The three R atoms may, together with the nitrogen atom to which they are bonded, form a pyridine ring. X - (This represents an anion.)

[0029] In general formula (E-1), R may be the same or different. In general formula (E-1), the number of carbon atoms in the "linear or branched alkyl group having 1 to 24 carbon atoms" of R is preferably 1 to 18, more preferably 1 to 12. In general formula (E-1), the number of carbon atoms in R, the "linear or branched alkyl group having 1 to 24 carbon atoms substituted with a phenyl group" (the phenyl group portion is not included in the carbon number here), is preferably 1 to 19, more preferably 12 to 19. In general formula (E-1), the number of carbon atoms in R, the "linear or branched alkyl group having 1 to 24 carbon atoms substituted to have a phenylene group in the alkylene chain" (the phenylene group portion is not included in the carbon number here), is preferably 2 to 19, more preferably 12 to 19. In general formula (E-1), preferably, at least one R is a linear or branched alkyl group having 1 to 3 carbon atoms. Preferably, the number of linear or branched alkyl groups having 1 to 3 carbon atoms is 1 to 3. If there are multiple linear or branched alkyl groups having 1 to 3 carbon atoms, these alkyl groups may be the same or different. In general formula (E-1), X - As for the "anion" of Cl, - , Br - CH3SO4 - C2H5SO4 - These include Cl - It is preferable.

[0030] (A2) The component is readily available on the market or can be synthesized by known methods.

[0031] (A2) The component may be a single type or multiple types may be used in combination.

[0032] (A2) The content of component (A2) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.05 to 1.0% by mass, and more preferably 0.1 to 0.7% by mass, relative to the total mass of the fiber treatment agent composition. A content of 0.05% by mass or more yields a high formulation effect. A content of 1.0% by mass or less shortens the drying time in step 3 described later, and further suppresses the occurrence of wrinkles.

[0033] (A) Component may be a single type or multiple types may be used in combination (for example, a combination of component (A1) and component (A2)). When using a single type of component (A), component (A1), which has superior blending effects, is preferred. In a preferred embodiment of the present invention, component (A1) and component (A2) are used in combination.

[0034] [(B) Ingredient: Alcohol] Component (B) is added to accelerate the drying of the fiber treatment agent composition. Accelerated drying of the fiber treatment agent composition shortens the drying time in step 3 described later, further suppressing the occurrence of wrinkles. Component (B) is at least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms. Examples of primary alcohols having 2 to 3 carbon atoms include ethanol and isopropanol. Of these, ethanol and isopropanol are preferred, and ethanol is even more preferred. Examples of glycols with 2 to 6 carbon atoms include ethylene glycol, propylene glycol, and dipropylene glycol. Examples of polyhydric alcohols with 3 to 8 carbon atoms include glycerin and diethylene glycol monobutyl ether.

[0035] (B) Component is readily available on the market or can be synthesized by known methods.

[0036] (B) Component may be a single type or multiple types may be used in combination.

[0037] The content of component (B) is not particularly limited as long as the purpose of the formulation is achieved, but is preferably 3 to 20% by mass, and more preferably 5 to 15% by mass, based on the total mass of the fiber treatment agent composition.

[0038] [Optional ingredients] The fiber treatment agent composition may contain, as long as it does not impair the effects of the present invention, components commonly used in fiber treatment agents (excluding components (A) and (B)) as optional components. Examples of optional ingredients include chelating agents, anti-redeposition agents, polymers, preservatives, antibacterial agents, antifungal agents, repellents, extracts of natural products, dispersants, dyes, antioxidants, thickeners, thinners, UV absorbers, and pH adjusters. The content of optional components is not particularly limited as long as the purpose of the formulation is achieved, but is preferably 5% by mass or less, and more preferably 3% by mass or less, relative to the total mass of the fiber treatment agent composition.

[0039] Antibacterial and antifungal agents are added to suppress the growth of bacteria on textile products and to prevent the generation of unpleasant odors. Examples of antibacterial and antifungal agents include organic and inorganic antibacterial and antifungal agents. Examples of organic antibacterial and antifungal agents include alcohol-based, aldehyde-based, carboxylic acid-based, ester-based, ether-based, nitrile-based, peroxide / epoxy-based, halogen-based, pyridine / quinoline-based, triazine-based, isothiazolone-based, imidazole / thiazole-based, anilide-based, biguanide-based, disulfide-based, thiocarbamate-based, carbohydrate-based, tropolone-based, and organometallic-based agents. Examples of inorganic antibacterial and antifungal agents include metal oxides and silver-based agents.

[0040] Antibacterial and antifungal agents may be used individually or in combination of multiple types. The content of the antibacterial agent and antifungal agent is not particularly limited as long as it is sufficient to achieve the purpose of formulation, but each is preferably 0.05 to 1% by mass relative to the total mass of the fiber treatment agent composition.

[0041] pH adjusters are added to further improve the storage stability of the components contained in the fiber treatment agent composition. Examples of pH adjusters include acids (e.g., inorganic acids (e.g., hydrochloric acid, sulfuric acid, etc.)), carboxylic acids (e.g., acetic acid, citric acid, etc.), and alkalis (e.g., alkali metal salts (e.g., sodium hydroxide, etc.) and alkanolamines (e.g., triethanolamine, etc.)).

[0042] The fiber treatment agent composition is preferably an aqueous composition containing water. There are no restrictions on the type of water used; tap water, purified water, deionized water, distilled water, ion-exchanged water, etc., can all be used. Purified water is preferred among these. The water content is not particularly limited and can be adjusted as needed to achieve the desired component composition.

[0043] [pH of the fiber treatment agent composition] The pH of the fiber treatment agent composition is not particularly limited as long as it does not impair its usability, but it is preferably between 4.0 and 8.0. Note that the above pH values ​​are those at 25°C.

[0044] [Method for producing fiber treatment agent composition] There are no particular restrictions on the manufacturing method; the fiber treatment agent composition can be produced by mixing the various components.

[0045] [Processing of textile products] The processing method is not particularly limited as long as it allows the fiber treatment agent composition to be applied to the textile product. Examples of processing methods include a method of applying a fiber treatment agent composition to a textile product by spraying it, a method of applying a fiber treatment agent composition stored in a container or tank equipped with a discharge port to a textile product in a shower-like manner, and a method of immersing a textile product in a fiber treatment agent composition accumulated in a container or tank. In particular, from the viewpoint of uniformly treating textile products, a method of storing the textile treatment agent composition in a spray container or tank and spraying it onto the textile products manually or electrically is preferred.

[0046] In one aspect of the present invention, the amount of fiber treatment agent composition used (spray amount) is preferably 20 to 1200 mL, and more preferably 50 to 500 mL, per 1.5 kg of mass of the textile product. When the amount used is 20 mL or more, an excellent effect in suppressing wrinkle formation can be obtained. When the amount used is 1200 mL or less, the drying time in step 3, described later, is shortened, and wrinkle formation can be further suppressed.

[0047] In another aspect of the present invention, the amount of fiber treatment agent composition used (amount sprayed) can be determined based on the mass ratio of "component (A1) contained in the fiber treatment agent composition" to the "textile product". In this aspect, the fiber treatment agent composition is used in an amount such that the ratio of "mass of component (A1)" to the "mass of the textile product" is preferably 0.003 to 0.5% by mass, and more preferably 0.003 to 0.1% by mass. If the amount used is 0.005% by mass or more, an excellent inhibitory effect on wrinkle formation can be obtained. If the amount used is 0.1% by mass or less, the occurrence of stains caused by the fiber treatment agent composition can be further suppressed.

[0048] [Container for fiber treatment agent composition] The container for storing the fiber treatment agent composition is not particularly limited. The fiber treatment agent composition is preferably in the form of a spray (aerosol) contained in a spray container. Examples of spray containers include trigger spray containers (direct pressure type or pressure-accumulating type) and dispenser spray containers. Examples of trigger spray containers include those described in Japanese Patent Publication No. 9-268473, Japanese Patent Publication No. 9-256272, and Japanese Patent Publication No. 10-76196. An example of a dispenser spray container is the one described in Japanese Patent Publication No. 9-256272. An example of a container equipped with a discharge port is the one described in Japanese Patent Publication No. 2020-200383. The container material may be plastic. Examples of plastic containers include bottles and refillable standing pouches. An example of a standing pouch is the one described in Japanese Patent Publication No. 2000-72181. From the viewpoint of preserving the contents, it is preferable for the standing pouch to have a three-layer structure having an inner layer (for example, linear low-density polyethylene with a thickness of 100 to 250 μm), an intermediate layer (for example, a two-layer structure of stretched nylon with a thickness of 15 to 30 μm or stretched nylon with a thickness of 15 μm), and an outer layer (for example, stretched nylon with a thickness of 15 μm).

[0049] [Step 3] In step 3, the textile products that have been subjected to step 2 are further dried.

[0050] [Drying means] The drying method in step 3 is not limited. Examples of drying methods include drying using a dryer and natural drying (including indoor drying and sun drying). In particular, the present invention can be suitably used for drying using a dryer, which tends to cause wrinkles in textile products. The drying means in step 3 may be the same as or different from the drying means in step 1, but it is preferable that it be the same as the drying means in step 1. If step 1 is carried out using a dryer, after step 1 is completed, the textile product may be removed from the dryer and step 2 may be carried out, and then it may be returned to the same dryer and step 3 may be carried out.

[0051] [Drying using a dryer] There are no restrictions on the type of dryer. Examples of dryers include washer-dryers with drying functions and standalone clothes dryers. An example of a washer-dryer is a drum-type washer-dryer. The average temperature of the drying process is not particularly limited, but is preferably 30°C or higher, and more preferably 35-65°C. When the average temperature of the drying process is 30°C or higher, the drying time in step 1 is shortened, and the occurrence of wrinkles can be further suppressed. [Examples]

[0052] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. In the examples and comparative examples, the content of each component is expressed in mass percent (on a pure content basis unless otherwise specified).

[0053] [Textile products (test fabric)] Oxford shirts (100% cotton, manufactured by Uniqlo Co., Ltd.) were used as the test fabric.

[0054] [Pre-treatment of test fabric] To simulate laundry in a real household, a laundry load consisting of five test cloths (total weight 1.5 kg) was used. This laundry was subjected to three wash, rinse, and spin cycles using a fully automatic washing machine (Mitsubishi CW-C30A1-H) (washing with 50°C hot water for 10 minutes, soaking and rinsing twice, and spinning for 4 minutes). The test cloths were removed from the washing machine and air-dried by hanging them on hangers.

[0055] [Washing, softening, and dewatering processes performed prior to Step 1] The pre-treated test fabric was subjected to either the washing, softening, and dewatering treatment 1 or 2 described below. [Washing, softening, and dewatering treatment 1 (implemented in Examples 1-9 and Comparative Examples 1-2)] A laundry load consisting of five test cloths (total weight 1.5 kg) was used. This laundry was subjected to a washing process using a drum-type washer-dryer (Panasonic Corporation (formerly Matsushita Electric Industrial Co., Ltd.) "NAVX7600L" model) on the "wash, rinse, spin, and dry in one continuous cycle" setting. The cleaning process was carried out for 15 minutes using a commercially available detergent (Kao Corporation's "Attack Bio EX"). The rinsing process was performed twice without using a fabric softener. The dehydration process was carried out for 9 minutes. The test cloths after dewatering were subjected to the treatment methods described in the Examples and Comparative Examples.

[0056] [Washing, softening, and dewatering treatment 2 (implemented in Example 10 and Comparative Examples 3-4)] A laundry load consisting of five test cloths (total weight 1.5 kg) was used. This laundry was subjected to a "wash, rinse, spin, and dry cycle" on a drum-type washer-dryer (Panasonic Corporation (formerly Matsushita Electric Industrial Co., Ltd.) "NAVX7600L"). The cleaning process was carried out for 15 minutes using a commercially available detergent (Kao Corporation's "Attack Bio EX"). The rinsing process was performed twice using 10 mL of fabric softener composition S-1, which will be described later. Note that 10 mL of fabric softener composition S-1 was used in the first rinse, but not in the second rinse. The dehydration process was carried out for 9 minutes. After dehydration, the steps described in the Examples and Comparative Examples were carried out.

[0057] [Fabric softener composition] By mixing the following s-1 to s-2 with purified water and stirring, a fabric softener composition S-1 having the composition shown in the table below was prepared. The content values ​​in the table represent the content (mass %) relative to the total mass of the fabric softener composition. s-1: Cationic surfactant (Quaternary ammonium salt composition (A-3) used in the example of Japanese Patent Publication No. 2018-59242) s-2: Polyether-modified silicone (CF1188N) (manufactured by Toray Dow Corning Co., Ltd.) JPEG2026103929000005.jpg31140

[0058] [Fiber treatment agent composition used in step 2] [(A) Component: Silicone compound and cationic surfactant] The following a-1 and a-2 were used. a-1: Polyether-modified silicone (SH3771M) (manufactured by Toray Dow Corning Ltd.). a-1 was used as component (A1) (silicone compound) of the present invention. a-2: Dodecyltrimethylammonium chloride (Lipocard 12-37W) (manufactured by Lion Specialty Chemicals Co., Ltd.). a-2 was used as component (A2) (cationic surfactant) of the present invention. Furthermore, a-2 has the general formula (E-1) (wherein three R are methyl groups (1 carbon atom) and the remaining R is a dodecyl group (12 carbon atoms), X - is Cl - It is a compound represented as ( ).

[0059] [(B) Ingredient: Alcohol] The following b-1 was used. b-1: Synthetic ethanol 95% (manufactured by Nippon Alcohol Sales Co., Ltd.)

[0060] [Preparation of fiber treatment agent composition] By mixing component (A), component (B), and purified water and stirring, fiber treatment agent compositions A-1 and A-2 having the compositions shown in the table below were prepared. The content values ​​in the table represent the content (mass %) relative to the total mass of the fiber treatment agent composition. JPEG2026103929000006.jpg36140

[0061] [Example: Relationship between washing machine / dryer operation time and moisture content of test fabric] Before carrying out the examples and comparative examples, the relationship between the operating time of the drum-type washer-dryer (the aforementioned "NAVX7600L") and the moisture content of the test fabric was determined according to the following procedure. A laundry load consisting of five pre-treated test cloths (total mass 1.5 kg) was subjected to a drum-type washer-dryer using the "wash, rinse, spin-dry, and dry cycle" (same as in the examples and comparative examples). The washer-dryer was stopped midway through the cycle, the test cloths were removed, and their mass was measured. The measured value was denoted as B in Formula 1. Separately, the pre-treated test cloth was left standing for 24 hours at 20°C and 40% RH relative humidity, and its mass was measured to obtain A in calculation formula 1. These values ​​were applied to formula 1 to determine the moisture content of the test fabric. When the moisture content of the test fabric was measured over time, the relationship between the washing machine / dryer operation time and the moisture content of the test fabric was as follows: The relationship between the washing machine operating time and the moisture content of the test fabric was determined for two treatments: one in which no fabric softener composition was used during rinsing (washing, softening, and spin-drying treatment 1), and another in which the fabric softener composition was used during rinsing (washing, softening, and spin-drying treatment 2). Furthermore, because the moisture content of the test cloth during spin-drying differs depending on whether or not the fabric softener composition is used, the moisture content of the test cloth may be the same even if the operating time is different. JPEG2026103929000007.jpg73134

[0062] In the examples and comparative examples described later, the moisture content of the test fabric in step 1 was determined based on the operating time of the drum-type washing machine and dryer.

[0063] [Example 1] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0064] [Example 2] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-2 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0267% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0065] [Example 3] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 2% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0066] [Example 4] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 15% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0067] [Example 5] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 20% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0068] [Example 6] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 20 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test cloth was 0.0013% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0069] [Example 7] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 50 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test cloth was 0.0033% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0070] [Example 8] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 500 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test cloth was 0.0333% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0071] [Example 9] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 1200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test cloth was 0.0800% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0072] [Example 10] After the "Washing, Softening, and Spinning Process 2" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0073] [Comparative Example 1] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 0.5% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 1000 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.067% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0074] [Comparative Example 2] After the "Washing, Softening, and Spinning Process 1" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 45% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 100 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.007% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0075] [Comparative Example 3] After the "Wash, Soften, and Spin Dry 2" cycle was completed, the laundry (5 test fabrics) was left in the drum-type washer-dryer, and the drying cycle was completed. In Comparative Example 3, treatment with a fiber treatment agent composition that involved stopping the drying operation was not performed.

[0076] [Comparative Example 4] After the "Washing, Softening, and Spinning Process 2" was completed, the laundry (5 test cloths) was not removed from the drum-type washer-dryer, but was instead subjected to the drying process (drying cycle). When the moisture content of the test cloth reached 45% (Step 1), the drying process was stopped, all laundry was removed, and the cloth was treated with the fiber treatment agent composition A-1 (Step 2). The treatment was carried out by directly spraying the fiber treatment agent composition, contained in a spray container, onto the entire surface of each test cloth. The spray volume was 200 mL per total mass (1.5 kg) of the test cloth. The ratio of the mass of component (A1) (silicone compound) contained in the sprayed fiber treatment agent composition to the total mass of the test fabric was 0.0133% by mass. The five processed test cloths were returned to the drum-type washer-dryer, and the drying process (drying cycle) was restarted and dried until it automatically stopped (Step 3).

[0077] [Wrinkles on the test fabric] After the completion of Step 3, the wrinkle condition of the back and arm areas of the test fabric was visually evaluated according to the following criteria. The evaluation was carried out by five people. The average score of the five evaluations (calculated to one decimal place) was applied to the following judgment criteria to determine the "wrinkle condition of the test fabric". The results are shown in the "Wrinkle Evaluation" column of Table 1. ○○○, ○○, and ○ were considered acceptable. <Evaluation Criteria> 3 points: No wrinkles at all, wearable. 2 points: Almost no wrinkles, wearable. 1 point: Slightly wrinkled, but wearable. 0 points: Very wrinkled, unwearable. <Judgment criteria> ○○○: The average score of the 5 evaluators is 2.5 points or higher. ○○: The average score of the 5 evaluators is between 2.0 and 2.5 points. ○: The average score of the 5 evaluators is between 1.0 and 2.0 points. ×: The average score of the 5 evaluators is less than 1.0.

[0078] [Stains on the test cloth] After the completion of step 3, the test cloth was visually evaluated for "stains (stains caused by the fiber treatment agent composition)" according to the following criteria. The evaluation was carried out by 5 people. The average score of the 5 people's evaluations (calculated to one decimal place) was applied to the following judgment criteria to evaluate the "stains on the test cloth". The results are shown in the "Ease of Staining" column of Table 1. ○, ○○, and ○○○ were considered acceptable. <Evaluation Criteria> 3 points: No stains were found at all. 2 points: Almost no stains are visible. 1 point: Some stains are visible. 0 points: Significant stains are visible. <Judgment criteria> ○○○: The average score of the 5 evaluators is 2.5 points or higher. ○○: The average score of the 5 evaluators is between 2.0 and 2.5 points. ○: The average score of the 5 evaluators is between 1.0 and 2.0 points. ×: The average score of the 5 evaluators is less than 1.0. [Industrial applicability]

[0079] This invention is applicable in the field of textile product processing.

[0080] [Table 1]

Claims

1. A method for processing textile products, comprising the following steps 1 to 3: Step 1: A process of drying the textile product until its moisture content is between 1% and 40%. Step 2: A step of treating the textile product subjected to Step 1 with a textile treatment agent composition, and Step 3: A process to further dry the textile products subjected to Step 2. Includes, The moisture content of textile products is the value obtained by the following formula 1. Moisture content (%) = (BA) / A x 100 (calculation formula 1) (In the formula, B is the mass of the textile product after carrying out step 1. A is the mass of an untreated textile product after it has been left standing for 24 hours at 20°C and 40% relative humidity; The fiber treatment agent composition consists of the following components (A) to (B): (A) (A1) Silicone compounds and / or (A2) Cationic surfactants, (B) At least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms. The method comprising the above-mentioned method.

2. In step 1, the textile product is dried until its moisture content is between 15% and 5%, and The method according to claim 1, wherein in step 2, the textile product is treated using 50 to 1200 ml of the textile treatment agent composition per 1.5 kg of textile product.

3. The method according to claim 1, wherein component (A1) is polyether-modified silicone.

4. (A2) Component is general formula (E-1): (In the general formula, Each R is independent of the others. A linear or branched alkyl group having 1 to 24 carbon atoms (the alkyl group may be substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), A linear or branched alkyl group having 1 to 24 carbon atoms substituted with a phenyl group (the alkyl group may be substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or A linear or branched alkyl group having 1 to 24 carbon atoms substituted to have a phenylene group in the alkylene chain (the alkyl group may be further substituted to have a carbonyl group (-C(=O)-), an ester group (-C(=O)O-), and / or an ether group (-O-) in the alkylene chain), or The three R atoms may each form a pyridine ring together with the nitrogen atom to which they are bonded. X - The method according to claim 1, wherein the compound is represented by (where represents an anion).

5. The method according to claim 1, wherein component (B) is a primary alcohol having 2 to 3 carbon atoms.

6. The method according to claim 1, wherein component (A) is (A1) a silicone compound and (A2) a cationic surfactant.

7. A fiber treatment agent composition for use in the method for treating a textile product as described in claim 1, comprising the following components (A) to (B): (A) (A1) Silicone compounds and / or (A2) Cationic surfactants, (B) At least one compound selected from the group consisting of primary alcohols having 2 to 3 carbon atoms, glycols having 2 to 6 carbon atoms, and polyhydric alcohols having 3 to 8 carbon atoms. A fiber treatment agent composition containing the following:

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