CN108456966B - Preparation method of environment-friendly soft tencel fabric - Google Patents
Preparation method of environment-friendly soft tencel fabric Download PDFInfo
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- CN108456966B CN108456966B CN201810616136.3A CN201810616136A CN108456966B CN 108456966 B CN108456966 B CN 108456966B CN 201810616136 A CN201810616136 A CN 201810616136A CN 108456966 B CN108456966 B CN 108456966B
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a preparation method of an environment-friendly soft tencel fabric. The preparation method comprises the steps of taking raw wood as a raw material, crushing the raw wood, sequentially carrying out enzyme hydrolysis, carrying out hydrophobic modification, mixing with a natural antibacterial agent, a natural antioxidant and a spinning auxiliary agent, preparing tencel fiber by an electrostatic spinning technology, and carrying out reinforcement treatment on the tencel fiber by citric acid; carrying out hydrophobic modification on cotton fibers to prepare hydrophobic modified cotton fibers; and finally, blending the tencel fiber and the hydrophobically modified cotton fiber to obtain the environment-friendly and soft tencel fabric. The soft tencel fabric prepared by the method disclosed by the invention is good in skin-friendly property and good in washing resistance, mechanical property and antibacterial property.
Description
Technical Field
The invention relates to the technical field of fabric preparation, in particular to a preparation method of an environment-friendly soft tencel fabric.
Background
Along with the improvement of living standard of people, the functional requirement on the garment fabric is stronger and stronger, and the air permeability of the clothes is closely related to the health of human skin, so that the clothes are concerned by a plurality of consumers. Compared with common chemical fiber, tencel fiber has smooth hand feeling, high drapability and good elegant performance. The tencel fiber has the comfort and the hygroscopicity of cotton, the hand feeling and the good drapability of real silk, the thickness of wool and the strength of polyester fiber, and is the only novel environment-friendly fiber integrating the advantages of fiber and natural fiber in the world at present. The fiber has poor mechanical property and high cost, so that the market share is insufficient. The cotton fiber has good moisture absorption and sweat releasing characteristics, but the pure cotton fiber cloth is easy to wrinkle. In rainy seasons, pure cotton clothes are easily corroded by mildew and mildew stains are difficult to remove. Cotton fibers also have the disadvantages of low strength, poor resistance to washing, and the like. Therefore, the improvement of the mechanical property of the tencel fiber and the antibacterial property of the cotton fiber has important significance for expanding the application of the tencel fabric and the cotton fiber fabric.
Disclosure of Invention
In order to meet the functional requirements of the fabric and solve the problems of poor mechanical property of tencel fiber, poor water resistance and antibacterial property of cotton fiber and the like, the invention provides a preparation method of an environment-friendly soft tencel fabric.
In order to solve the problems, the preparation method of the environment-friendly soft tencel fabric comprises the following steps:
(1) taking raw wood as a fiber preparation raw material, extruding and crushing to obtain wood chips, soaking for 2-4 hours by using a phosphate buffer, adding enzyme, hydrolyzing for a period of time at 35-45 ℃, and filtering to obtain a cellulose solution;
(2) oxidizing and degrading a cellulose solution for a period of time, separating out cellulose by using an acid solution to prepare pure wood cellulose pulp, adding 3-5 times of water by volume into the pure wood cellulose pulp, performing nanocrystallization treatment on the pure wood cellulose pulp by using high-speed shearing to obtain a nanocellulose dispersion liquid, adjusting the pH value of the dispersion liquid to 3-4, adding a hydrophobic silanization reagent, stirring for 2 hours at room temperature, filtering, washing the filtered fibers with water and ethanol for 2-3 times respectively, and drying to obtain hydrophobic nanocellulose;
(3) uniformly mixing hydrophobic nano-cellulose, a natural antibacterial agent, a natural antioxidant, water and a spinning auxiliary agent to prepare a tencel fiber spinning solution, performing electrostatic spinning treatment to prepare antibacterial tencel fibers, soaking the antibacterial tencel fibers in a citric acid solution for 2-3 hours, taking out the antibacterial tencel fibers, washing the antibacterial tencel fibers with water for 2-3 times, and drying the antibacterial tencel fibers to obtain the antibacterial tencel fibers;
(4) washing cotton yarns, and then, carrying out the following steps of 1: mixing 80-100 mass volume ratio with glycerol-water mixed solution, soaking for 2-3 hours, taking out, washing with water for 2-3 times, placing in water solution of hydrophobic silanization reagent, soaking for 4-6 hours at room temperature, washing with water for 2-3 times, and drying to obtain hydrophobically modified cotton fiber;
(5) and (4) blending the antibacterial tencel fiber obtained in the step (3) with the hydrophobically modified cotton fiber obtained in the step (4) to obtain the environment-friendly and soft tencel fabric.
Preferably, the raw wood in the step (1) is one of fir, elm and camphorwood.
Preferably, the pH value of the phosphate buffer solution in the step (1) is 5-7; the enzyme is cellulase, and the addition amount of the cellulase is 0.5-1% of the mass of the raw wood; the hydrolysis time is 4-6 hours.
Preferably, the oxidative degradation conditions in step (2) are: the pH value of the solution is 11-13, and the degradation time is 2-3 hours; the acidic solution is an acetic acid solution with the pH value of 1.5-2.5.
Preferably, the high shear conditions described in (2) are: the shearing speed is 8000-; the hydrophobic silanization reagent is one of decaalkyl triethoxysilane, dodecyl triethoxysilane and hexadecyl triethoxysilane; the adding amount of the hydrophobic silanization reagent is 1-2% of the mass of the pure wood cellulose pulp.
Preferably, the natural antibacterial agent in the step (3) is one of an ethanol extract of coptis chinensis, hypericum perforatum and honeysuckle, and the natural antioxidant is one of vitamin E and gallic acid; the spinning auxiliary agent is one of polyacrylamide, polyacrylonitrile and polycarbonate; the hydrophobic nano-cellulose, the natural antibacterial agent, the natural antioxidant, the water and the spinning auxiliary agent are 15-20 parts, 0.1-0.2 part, 80-90 parts and 2-5 parts in sequence by mass.
Preferably, the concentration of citric acid in the citric acid solution in the step (3) is 0.2-0.4 g/mL.
Preferably, the mass fraction of glycerol in the glycerol-water mixed solution in the step (4) is 40-50%; the hydrophobic silanization reagent is one of decaalkyl triethoxysilane, dodecyl triethoxysilane and hexadecyl triethoxysilane; the mass of the hydrophobic silanization reagent in the water solution of the hydrophobic silanization reagent is 2-4% of the mass of the cotton yarn.
Preferably, in the blending in the step (5), the mass ratio of the antibacterial tencel fiber to the hydrophobically modified cotton fiber is 1: 0.5-2.
Compared with the prior art, the preparation method of the environment-friendly soft tencel fabric has the following beneficial effects that natural logs are used as tencel fiber raw materials, so that the source is rich and the cost is low; after the fibers are subjected to nanocrystallization treatment and hydrophobic modification, the water resistance of the tencel fibers is improved; the tencel fiber is treated by citric acid, so that the mechanical property of the tencel fiber is enhanced; the hydrophobic modification is carried out on the cotton fiber, so that the water resistance of the cotton fiber is enhanced; the cotton fiber and the tencel fiber are blended, so that the prepared fabric is good in air permeability, high in water absorption and strong in skin affinity. In addition, a natural antioxidant and a natural antibacterial agent are added in the preparation process of the fiber, so that the antibacterial performance of the fabric is obviously improved. The soft tencel fabric prepared by the method disclosed by the invention is good in skin-friendly property and good in washing resistance, mechanical property and antibacterial property.
Detailed Description
[ example 1 ]
A preparation method of an environment-friendly soft tencel fabric is characterized by comprising the following steps:
(1) taking Chinese fir as a fiber preparation raw material, extruding and crushing to obtain crushed wood, soaking for 4 hours by using a phosphate buffer solution with the pH value of 6, adding cellulase accounting for 1 percent of the mass of the raw wood, hydrolyzing for 4 hours at 40 ℃, and filtering to obtain a cellulose solution;
(2) oxidizing and degrading a cellulose solution in a solution with a pH value of 13 for 2 hours, separating out cellulose by using an acetic acid solution with a pH value of 1.5-2.5 to prepare pure wood cellulose pulp, adding 3-5 times of water into the pure wood cellulose pulp, shearing at a shearing speed of 10000rpm/min for 20 minutes by using high-speed shearing to obtain nano-cellulose dispersion liquid, adjusting the pH value of the dispersion liquid to 3-4, adding dodecyl triethoxy silane, stirring for 2 hours at room temperature, filtering, washing the filtered fibers with water and ethanol for 2-3 times respectively, and drying to obtain hydrophobic nano-cellulose;
(3) uniformly mixing 16 parts of hydrophobic nano-cellulose, 0.2 part of vitamin E, 0.2 part of coptis chinensis ethanol extract, 80.6 parts of water and 3 parts of spinning auxiliary agent to prepare tencel fiber spinning solution, performing electrostatic spinning treatment to prepare antibacterial tencel fiber, soaking the antibacterial tencel fiber in 0.3g/mL citric acid solution for 3 hours, taking out, washing with water for 2-3 times, and drying to obtain the antibacterial tencel fiber;
(4) washing cotton yarns, and then, carrying out the following steps of 1: mixing 80-100 mass volume percent of the mixture with 50% of glycerin-water mixed solution, soaking for 3 hours, taking out the mixture, washing for 2-3 times with water, placing the mixture in hexadecyl triethoxysilane aqueous solution, soaking for 5 hours at room temperature, washing for 2-3 times with water, and drying to obtain hydrophobically modified cotton fibers;
(5) mixing the antibacterial tencel fiber obtained in the step (3) with the hydrophobically modified cotton fiber obtained in the step (4) according to the weight ratio of 1: 1, and blending to obtain the environment-friendly soft tencel fabric.
[ example 2 ]
A preparation method of an environment-friendly soft tencel fabric is characterized by comprising the following steps:
(1) taking elm as a fiber preparation raw material, extruding and crushing to obtain wood chips, soaking for 4 hours by using a phosphate buffer solution with the pH value of 5.5, adding cellulase accounting for 0.5 percent of the mass of the log, hydrolyzing for 4 hours at 40 ℃, and filtering to obtain a cellulose solution;
(2) oxidizing and degrading a cellulose solution in a solution with a pH value of 13 for 2 hours, separating out cellulose by using an acetic acid solution with a pH value of 1.5-2.5 to prepare pure wood cellulose pulp, adding 3-5 times of water into the pure wood cellulose pulp, shearing at a shearing speed of 10000rpm/min for 20 minutes by using high-speed shearing to obtain nano-cellulose dispersion liquid, adjusting the pH value of the dispersion liquid to 3-4, adding hexadecyl triethoxysilane, stirring at room temperature for 2 hours, filtering, washing the filtered fibers with water and ethanol for 2-3 times respectively, and drying to obtain hydrophobic nano-cellulose;
(3) uniformly mixing 15 parts of hydrophobic nano-cellulose, 0.2 part of gallic acid, 0.2 part of honeysuckle ethanol extract, 81.6 parts of water and 3 parts of spinning auxiliary agent to prepare tencel fiber spinning solution, performing electrostatic spinning treatment to prepare antibacterial tencel fiber, soaking the antibacterial tencel fiber in 0.3g/mL citric acid solution for 3 hours, taking out, washing with water for 2-3 times, and drying to obtain the antibacterial tencel fiber;
(4) washing cotton yarns, and then, carrying out the following steps of 1: mixing 80-100 mass volume percent of the mixture with 50% of glycerin-water mixed solution, soaking for 3 hours, taking out the mixture, washing for 2-3 times with water, placing the mixture in aqueous solution of dodecyl triethoxysilane, soaking for 5 hours at room temperature, washing for 2-3 times with water, and drying to obtain hydrophobically modified cotton fibers;
(5) mixing the antibacterial tencel fiber obtained in the step (3) with the hydrophobically modified cotton fiber obtained in the step (4) according to the weight ratio of 1: and (3) blending according to the mass ratio of 0.6 to obtain the environment-friendly soft tencel fabric.
[ example 3 ]
A preparation method of an environment-friendly soft tencel fabric is characterized by comprising the following steps:
(1) the preparation method comprises the steps of taking camphor wood as a fiber preparation raw material, obtaining wood chips after extrusion and crushing, soaking for 4 hours by using a phosphate buffer solution with the pH value of 6, adding cellulase accounting for 0.8 percent of the mass of raw wood, hydrolyzing for 4 hours at 40 ℃, and filtering to obtain a cellulose solution;
(2) oxidizing and degrading a cellulose solution in a solution with the pH value of 13 for 2 hours, separating out cellulose by using an acetic acid solution with the pH value of 1.5-2.5 to prepare pure wood cellulose pulp, adding 3-5 times of water into the pure wood cellulose pulp, shearing the pure wood cellulose pulp at a shearing speed of 11000rpm/min for 20 minutes by using high-speed shearing to obtain nano-cellulose dispersion liquid, adjusting the pH value of the dispersion liquid to 3-4, adding hexadecyl triethoxysilane, stirring for 2 hours at room temperature, filtering, washing the filtered fiber with water and ethanol for 2-3 times respectively, and drying to obtain hydrophobic nano-cellulose;
(3) uniformly mixing 16 parts of hydrophobic nano-cellulose, 0.2 part of gallic acid, 0.2 part of honeysuckle ethanol extract, 81.6 parts of water and 2 parts of spinning auxiliary agent to prepare tencel fiber spinning solution, performing electrostatic spinning treatment to prepare antibacterial tencel fiber, soaking the antibacterial tencel fiber in 0.35g/mL citric acid solution for 3 hours, taking out, washing with water for 2-3 times, and drying to obtain the antibacterial tencel fiber;
(4) washing cotton yarns, and then, carrying out the following steps of 1: mixing 80-100 mass volume percent of the mixture with 50% of glycerin-water mixed solution, soaking for 3 hours, taking out the mixture, washing for 2-3 times with water, placing the mixture in hexadecyl triethoxysilane aqueous solution, soaking for 5 hours at room temperature, washing for 2-3 times with water, and drying to obtain hydrophobically modified cotton fibers;
(5) mixing the antibacterial tencel fiber obtained in the step (3) with the hydrophobically modified cotton fiber obtained in the step (4) according to the weight ratio of 1: and (3) blending according to the mass ratio of 1.2 to obtain the environment-friendly soft tencel fabric.
It is obvious to those skilled in the art that the present invention is not limited to the above embodiments, and it is within the scope of the present invention to adopt various insubstantial modifications of the method concept and technical scheme of the present invention, or to directly apply the concept and technical scheme of the present invention to other occasions without modification.
Claims (8)
1. The preparation method of the environment-friendly soft tencel fabric is characterized by comprising the following steps of:
(1) taking raw wood as a fiber preparation raw material, extruding and crushing to obtain wood chips, soaking for 2-4 hours by using a phosphate buffer, adding enzyme, hydrolyzing for a period of time at 35-45 ℃, and filtering to obtain a cellulose solution, wherein the pH value of the phosphate buffer is 5-7;
(2) after cellulose solution is oxidized and degraded for a period of time, cellulose is separated out by utilizing an acid solution to prepare pure wood cellulose pulp, 3-5 times of water is added into the pure wood cellulose pulp, nano-cellulose dispersion liquid is obtained after nano-treatment is carried out by utilizing high-speed shearing, the pH value of the dispersion liquid is adjusted to 3-4, a hydrophobic silanization reagent is added, stirring is carried out for 2 hours at room temperature, filtering is carried out, fibers obtained by filtering are washed for 2-3 times by water and ethanol respectively, and drying is carried out to obtain the hydrophobic nano-cellulose, wherein the oxidative degradation conditions are as follows: the pH value of the solution is 11-13, and the degradation time is 2-3 hours; the acid solution is an acetic acid solution with the pH value of 1.5-2.5;
(3) uniformly mixing hydrophobic nano-cellulose, a natural antibacterial agent, a natural antioxidant, water and a spinning auxiliary agent to prepare a tencel fiber spinning solution, performing electrostatic spinning treatment to prepare antibacterial tencel fibers, soaking the antibacterial tencel fibers in a citric acid solution for 2-3 hours, taking out the antibacterial tencel fibers, washing the antibacterial tencel fibers with water for 2-3 times, and drying the antibacterial tencel fibers to obtain the antibacterial tencel fibers;
(4) washing cotton yarns, and then, carrying out the following steps of 1: mixing 80-100 mass volume ratio with glycerol-water mixed solution, soaking for 2-3 hours, taking out, washing with water for 2-3 times, placing in water solution of hydrophobic silanization reagent, soaking for 4-6 hours at room temperature, washing with water for 2-3 times, and drying to obtain the hydrophobically modified cotton fiber, wherein the hydrophobic silanization reagent is one of dodecyl triethoxysilane, dodecyl triethoxysilane and hexadecyl triethoxysilane;
(5) and (4) blending the antibacterial tencel fiber obtained in the step (3) with the hydrophobically modified cotton fiber obtained in the step (4) to obtain the environment-friendly and soft tencel fabric.
2. The method for preparing environment-friendly, soft and gentle tencel fabric according to claim 1, wherein the raw wood in step (1) is one of cedar, elm and camphorwood.
3. The method for preparing environment-friendly soft tencel fabric according to claim 1, wherein the enzyme in the step (1) is cellulase, and the addition amount of the cellulase is 0.5-1% of the mass of the raw wood; the hydrolysis time is 4-6 hours.
4. The preparation method of the environment-friendly soft tencel fabric according to claim 1, wherein the high-speed shearing conditions in the step (2) are as follows: the shearing speed is 8000-; the hydrophobic silanization reagent is one of decaalkyl triethoxysilane, dodecyl triethoxysilane and hexadecyl triethoxysilane; the adding amount of the hydrophobic silanization reagent is 1-2% of the mass of the pure wood cellulose pulp.
5. The preparation method of the environment-friendly and soft tencel fabric according to claim 1, wherein the natural antibacterial agent in the step (3) is one of an ethanol extract of coptis chinensis, hypericum perforatum and honeysuckle, and the natural antioxidant is one of vitamin E and gallic acid; the spinning auxiliary agent is one of polyacrylamide, polyacrylonitrile and polycarbonate; the hydrophobic nano-cellulose, the natural antibacterial agent, the natural antioxidant, the water and the spinning auxiliary agent are 15-20 parts, 0.1-0.2 part, 80-90 parts and 2-5 parts in sequence by mass.
6. The method for preparing environment-friendly soft tencel fabric according to claim 1, wherein the concentration of citric acid in the citric acid solution in the step (3) is 0.2-0.4 g/mL.
7. The preparation method of the environment-friendly soft tencel fabric according to claim 1, wherein the glycerol in the glycerol-water mixed solution in the step (4) accounts for 40-50% by mass; the mass of the hydrophobic silanization reagent in the water solution of the hydrophobic silanization reagent is 2-4% of the mass of the cotton yarn.
8. The preparation method of the environment-friendly soft tencel fabric according to claim 1, wherein in the blending in the step (5), the mass ratio of the antibacterial tencel fibers to the hydrophobically modified cotton fibers is 1: 0.5-2.
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| CN109247627A (en) * | 2018-10-22 | 2019-01-22 | 唐卫兵 | A kind of preparation method of Chinese medicine antibacterial underwear fabric |
| CN109468719A (en) * | 2018-10-22 | 2019-03-15 | 唐卫兵 | A kind of preparation method of high resiliency chitosan underwear fabric |
| CN110218014B (en) * | 2019-06-20 | 2020-09-04 | 福建农林大学 | Natural bacteriostasis method for plant fiber of cement composite material |
| CN110607692A (en) * | 2019-09-18 | 2019-12-24 | 界首市双鑫纺织有限公司 | Preparation method of cotton-based antibacterial composite fabric |
| EP3868789A1 (en) | 2020-02-18 | 2021-08-25 | The Hong Kong Research Institute of Textiles and Apparel Limited | Method for preparing water repellent textile substrates and products thereof |
| CN111455659A (en) * | 2020-04-23 | 2020-07-28 | 宁波市中迪鞋业有限公司 | Waterproof and dustproof children garment fabric |
| CN112708977A (en) * | 2020-12-08 | 2021-04-27 | 苏州维杰纺织有限公司 | Hydrophobic nanofiber blended yarn and production process thereof |
| CN112708993B (en) * | 2020-12-23 | 2021-09-07 | 广东荣昌纺织实业有限公司 | Dyeing and finishing device for super-soft tencel fiber textile fabric |
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