CN1246522C - Hosiery and textile dipping method post-dressing process with far infrared function and product thereof - Google Patents
Hosiery and textile dipping method post-dressing process with far infrared function and product thereof Download PDFInfo
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- CN1246522C CN1246522C CN 200410059961 CN200410059961A CN1246522C CN 1246522 C CN1246522 C CN 1246522C CN 200410059961 CN200410059961 CN 200410059961 CN 200410059961 A CN200410059961 A CN 200410059961A CN 1246522 C CN1246522 C CN 1246522C
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Abstract
The present invention is hosiery and textile slop padding method post-dressing process with far infrared function and product thereof, and relates to a method for the application of the far infrared dressing agent (far infrared auxiliaries) on the post-dressing process for the hosiery and textile and the product thereof. The technics is that: (1) the hosiery and textile to be processed is filled into a pad vat and the pad vat is filled with water and is heated, the pad vat is filled with far infrared dressing agent SL-977 A for slop padding, the residual liquid and drained water are discharged after the slop padding; (2) the processed hosiery and textile is filled into the pad vat and filled with water and heated, and is added with far infrared dressing agent SL-977B for slop padding, the residual liquid and drained water are discharged after the slop padding; (3) the processed hosiery and textile after slop padding is washed by water under normal temperature, and is processed by adding neutralization agent. The residual liquid and drained water are discharged after the neutralization treatment. The hosiery and textile is then washed by water again, and is processed by adding soft agent, and is processed by discharging residual liquid, is gotten out of the vat, and is dehydrated, stacked, dissected, shaped, initial inspected, stacked, and made to half-finished product grey cloth.
Description
Technical field
What the present invention relates to is that a kind of far-infrared finishing agent (far infrared auxiliary agent) is at back arrangement and the technologic application processing methods of goods thereof such as pin, textiless (comprising natural, chemical, synthetic fabrics).Patent of the present invention belongs to a kind of secondary treatment method of pin, textiles.Promptly apply on pin, the after-finishing of textile products technology with far-infrared finishing agent (far infrared auxiliary agent).This technology is that this auxiliary agent is grafted on hydroxyl in the fiber, the amino, forms firm combining with chemical bond form and fiber.This pin of handling through far-infrared finishing agent (far infrared auxiliary agent), the various goods that textiles can be made direct contact skin.As various haberdasheries such as various bedding such as sheet, multifunction quilt, cover, cover, pillow cover, towelling coverlet, yarn and shoes and hats, underwear, underpants, waist support, wrister, elbow support, gloves, socks, mouth mask, eyeshade, ready-made clothes, not only attractive in appearance but also can stimulate circulation, play health-care physical therapy effects such as regulating vegetative nervous disorder.
Background technology
Have dissimilar infrared powder now, invention or application are in various degree all arranged in China and Japan.But its application all has limitation, for example: day the present invention the infrared micro energy radiation with powder and mix the synthetic fiber and the goods thereof of this powder.Its number of patent application is 90102198.X.This invention is that the infrared micro energy powder was joined before synthetic fiber reel off raw silk from cocoons in the synthetic fiber resin of molten condition, reels off raw silk from cocoons then and makes synthetic fiber products.China also has many chemical fibre mills to adopt the method to make products such as far infrared terylene, far-infrared polypropylene, the method is a kind of physical method, it is with Van der Waals force far-infared ceramic powder to be sticked on the synthetic fiber, this method can only be applied to chemistry, synthetic fiber, and can't be applied on the natural fabric.In this way the pin made of the fiber of Sheng Chaning, can produce static when textiles is worn, easily adsorb dust, easily produce the sense of thorn oxygen, also have allergic reaction individually.The far-infrared ceramic fabric of 4 street Lee winters of China Tianjin Tanggu District development zone fine jade invention in addition, its patent publication No. is CN1057872A.This invention is at high temperature far-infared ceramic powder and adhesive to be mixed and made into far-infrared ceramic coating and at high temperature this coating to be coated with or to rinse to be coated on the fabric.This kind method can only be coated in the top layer of fabric, and feel is relatively poor airtight again, and discomfort is fit to do the underwear of close skin etc.
Summary of the invention
The objective of the invention is provides a kind of have far-infrared functional pin, textiles infusion process postfinishing process and goods thereof at above-mentioned weak point, can in back arrangement process, it easily be combined with fiber far-infrared finishing agent (far infrared auxiliary agent), this method is by dipping with the far infrared radiation body, high-speed osmotic, swelling, efficient absorption take place, reduce effects such as the activation energy of fibre chemistry key and catalysis association, and with the unimolecule state with the form of chemical bond-covalent bond apply to have hydroxyl, amino fiber and the postfinishing process on the goods thereof.
Having far-infrared functional pin, after-finishing of textile products technology and goods thereof is achieved through the following technical solutions: described finishing technique, mainly be to adopt distinct methods according to pin, textiles different material, different requirement, different machinery etc., dye methods such as method, finishing method as infusion process, padding method, section and carry out, and formulate various processes by different requirements.
Two kinds on SL-977A, the SL-977B type that clean your the refreshing High Seience Technology Co., Ltd. in Beijing produces selected in far-infrared finishing agent (far infrared auxiliary agent) for use, is also referred to as far-infrared finishing agent JLSUN777A, JLSUN777B, and SL-977 is JLSUN777.Far-infrared finishing agent (far infrared auxiliary agent) SL-977 is that JLSUN777 is a kind of far infrared radiation body, by forming by the far infrared radiation body SL-977A and the SL-977B of higher emissivity at normal temperatures, be that JLSUN777A and JLSUN777B form, be applicable to the far-infrared finishing of natural fabric (fiber that contains amino or hydroxyl) and chemistry, synthetic fiber.Its chemical reaction mechanism is: SL-977A contains the active group that can combine with amino or hydroxyl among the JLSUN777A, can the unimolecule state by chemical bond with contain the fiber combination of amino or hydroxyl; SL-977A can be that BJLSUN777B can react with JLSUN777A with the SL-977B reaction, generate the far infrared radiation body of water insoluble and organic solvent, finally make fiber-amino or hydroxyl-SL-977A-SL-977B promptly-JLSUN777A-JLSUN777B is by the integral body that chemical bond forms, and shows good washing resistance.
Far-infrared finishing agent SL-977A and SL-977B (JLSUN777A, JLSUN777B) Main Ingredients and Appearance contains nanoscale (between 50～100 nanometers), the nonmetal oxide of tool far-infrared functional is as silica, gypsum (white tiger) etc. and metal oxides such as titanium dioxide, alum etc. and active group, dispersant, stabilizing agent, chelating agent, adhesive etc., so it is not only not stratified but also can not produce reunion.
The reference impregnation technology flow process that the operation instructions of clean your the refreshing SL-977 of High Seience Technology Co., Ltd. in Beijing provide is: far-infrared finishing agent SL-977A (4%o.w.f, cotton: 60-65 ℃ * 30-40 minute are bleachinged and dyeing → flooded to (bath raio 1: 15); Hair: 80-85 ℃ * 30-40 minute) → put raffinate → dipping SL-977B (3%o.w.f, 40-50 ℃ * 20-30 minute) → put raffinate → cold water flush one time (preventing to influence the stability of silicone oil softener) → last silicone oil softener → finished product.The product that obtains according to above-mentioned technological process has following defective: grey cloth contains a large amount of powders (by producing after the alkaline matter drying), has a strong impact on direct labor's health; Fabric feeling is poor; Fabric easily produces the pin eye, influences product quality.
The applicant finds through a large amount of tests, can overcome above-mentioned defective by following postfinishing process.
A kind of pin, textiles infusion process postfinishing process with far-infrared functional is characterized in that:
(1) processed pin, textile fabric being immersed the cylinder water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977A dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: (8～15), pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977A weight ratio are 1: (0.03～0.06), dipping temperature is controlled at 40 ℃～85 ℃, pin, textile fabric dip time were controlled at 1.5～2 hours, put raffinate, draining behind pin, the textile fabric dipping;
(2) pin that above-mentioned impregnation process is crossed, textile fabric advance cylinder, water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977B dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: (8～15), pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977B weight ratio are 1: (0.03～0.06), dipping temperature is controlled at 40 ℃～85 ℃, pin, textile fabric dip time were controlled at 1.5～2 hours, put raffinate, draining behind pin, the textile fabric dipping;
(3) with the above-mentioned pin of crossing through impregnation process, textile fabric is washed at normal temperatures, adding neutralizer again handles, neutralizer can adopt weak acid, its consumption is 0.5～1.5g/l, neutralization back pH value is 6.5～6.8, processing time is 15～20 minutes, put raffinate after the neutralisation treatment, draining, wash again, adding softener handles, adopt softener to handle pin, during textile fabric, pin, textile fabric is 1 with the weight ratio of add of softener: (0.03～0.04), the soft treatment time is 20～30 minutes, pin, put raffinate after the textile fabric soft treatment, go out cylinder, dehydration, stack, cut open the width of cloth, typing, initial survey, stack, make the semi-finished product grey cloth.
Do not adopt neutralisation treatment as only washing behind the dipping, because SL-977B is alkalescence, not only can waste a large amount of water, SL-977B can react with the softener in the subsequent step simultaneously, produces dust, causes fabric feeling to harden; As flood back neutralization earlier, after washing because contain adhesive among the SL-977B, add behind the neutralizer very sticking, after water-washing step in also be difficult to removing.
According to the present invention, pin, the textile fabric of crossing through impregnation process carries out water-washing step earlier to be handled and carries out neutralisation treatment again.Through above-mentioned process modification, eliminated the dust of grey cloth, the good hand touch of fabric, product quality detect and reach enterprise's inner quality standard, and far infrared transmissivity detects and meets national standard.
Far-infrared finishing agent (far infrared auxiliary agent) SL-977A Main Ingredients and Appearance contains nanoscale (between 50～100 nanometers), the nonmetal oxide of tool far-infrared functional as: silica, gypsum (white tiger) etc. and metal oxides such as titanium dioxide, alum etc. and with fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive etc.; The SL-977B Main Ingredients and Appearance contains nanoscale (between 50～100 nanometers), the nonmetal oxide of tool far-infrared functional as: silica, gypsum (white tiger) etc. and metal oxides such as titanium dioxide, alum etc. and with SL-977A and fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive etc., so it is not only not stratified but also can not produce reunion.
Neutralizer adopts weak acid, preferred volatility weak acid, more preferably acetic acid (HAC), citric acid, phosphoric acid.
That pin, textiles infusion process rear finishing duplex art products with far-infrared functional comprises that far-infrared finishing agent (far infrared auxiliary agent) SL-977A, SL-977B handled is natural, artificial, the pin of synthetic fiber, textile fabric.
Technological process is:
Pending fabric → mistake cylinder, water inlet, intensification, running → dipping far-infrared finishing agent (far infrared auxiliary agent) SL-977A → raffinate (draining) → water inlet, intensification, running → dipping far-infrared finishing agent (far infrared auxiliary agent) SL-977B → put raffinate (draining) → washing (normal temperature) → HAC raffinate (draining) → washing (normal temperature) → soft treatment → put raffinate → go out cylinder → water → stack → cut open width of cloth typing → initial survey → stacking → finished product grey cloth that neutralizes → put
Technical parameter:
Bath raio: 1: 8-15 overall process processing time: 3-4h
SL-997A, B far-infrared finishing agent (far infrared auxiliary agent) treatment temperature: 40 ℃～85 ℃
The washing time: 10 minutes/time
Washing temperature: normal temperature
Neutralizer processing time: 15-20 minute/time
Softener treatment temperature: 30 ℃～55 ℃
Softener processing time: 20-30 minute/time
Far-infrared finishing agent (far infrared auxiliary agent) consumption: 3-6% (owf)
Softener consumption: 3-4% (owf)
Neutralizer (HAC) consumption: 0.5-1.5g/l
PH value: SL-977A 3-4, among the SL-977B 8-9 and the back: 6.5-6.8
Band liquid measure: 50-70% content of formaldehyde: 0
Typing, preshrunk temperature and the speed of a motor vehicle are decided on various fabrics and equipment different situations and requirement.
Have far-infrared functional pin, textiles infusion process postfinishing process and be specially adapted to the postfinishing process of natural fabric, have characteristics such as simple and easy to do, applied widely, that flow process is short, cost is low as natural fabrics such as cotton, fiber crops, hair and chemistry, synthetic fiber.
Harmless non-stimulated through pin, textiles that this far-infrared finishing agent (far infrared auxiliary agent) impregnation process is crossed, meet the green product requirement fully, can make the various goods of direct contact skin, as bedding such as sheet, quilt cover, bed sheet, multi-functional coverlet, pillow cover, pillowcase and underwear, underpants, cap, waist support, knee-pad, elbow support, wrister, shoulder protector, gloves, socks, mouth mask, footwear, shoe-pad etc.
Far-infrared finishing agent of the present invention has far-infrared transmitting function, can produce resonance and fuel factor at the subcutaneous 2-4cm of human body position, activating biological cell makes blood capable good, stimulates circulation, strengthen human body metabolism, can strengthen biological tissue's power of regeneration.The object molecular energy utmost point is excited and is in the higher vibrational energy utmost point, this has just improved big molecular activities such as nucleic acid protein, thereby regulates organism metabolism, and raise immunity is regulated the abalienation of human body plant, plays the health-care physical therapy effect.
The specific embodiment
Have pin, the textiles dipping postfinishing process of far-infrared functional, embodiment 1:
(1) processed pin, textile fabric being immersed the cylinder water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977A dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 8, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977A weight ratio are 1: 0.03, dipping temperature is controlled at 40 ℃ of pins, the textile fabric dip time was controlled at 1.5 hours, puts raffinate, draining behind pin, the textile fabric dipping;
(2) pin that above-mentioned impregnation process is crossed, textile fabric advance cylinder, water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977B dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 8, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977B weight ratio are 1: 0.03, dipping temperature is controlled at 40 ℃, pin, textile fabric dip time were controlled at 1.5 hours, put raffinate, draining behind pin, the textile fabric dipping;
(3) with the above-mentioned pin of crossing through impregnation process, textile fabric is washed at normal temperatures, adding neutralizer again handles, neutralizer can adopt acetic acid (HAC), consumption is 0.5g/l, neutralization back pH value is 6.5～6.8, processing time is 15 minutes, put raffinate after the neutralisation treatment, draining, wash again, add softener and handle, adopt softener to handle pin, during textile fabric, pin, textile fabric is 1: 0.03 with the weight ratio of add of softener, the soft treatment time is 20 minutes, pin, put raffinate after the textile fabric soft treatment, go out cylinder, dehydration, stack, cut open the width of cloth, typing, initial survey, stack, goods semi-finished product grey cloth.
Have pin, the textiles infusion process postfinishing process of far-infrared functional, embodiment 2:
(1) processed pin, textile fabric being immersed the cylinder water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977A dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 12, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977A weight ratio are 1: 0.05, dipping temperature is controlled at 60 ℃, pin, textile fabric dip time were controlled at 1.5 hours, put raffinate, draining behind pin, the textile fabric dipping;
(2) pin that above-mentioned impregnation process is crossed, textile fabric advance cylinder, water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977B dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 12, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977B weight ratio are 1: 0.05, dipping temperature is controlled at 60 ℃, pin, textile fabric dip time were controlled at 1.5 hours, put raffinate, draining behind pin, the textile fabric dipping;
(3) with the above-mentioned pin of crossing through impregnation process, textile fabric is washed at normal temperatures, adding neutralizer again handles, neutralizer can adopt acetic acid (HAC), consumption is 1g/l, neutralization back pH value is 6.5～6.8, processing time is 18 minutes, put raffinate after the neutralisation treatment, draining, wash again, add softener and handle, adopt softener to handle pin, during textile fabric, pin, textile fabric is 1: 0.03 with the weight ratio of add of softener, the soft treatment time is 25 minutes, pin, put raffinate after the textile fabric soft treatment, go out cylinder, dehydration, stack, cut open the width of cloth, typing, initial survey, stack, goods semi-finished product grey cloth.
Have pin, the textiles infusion process postfinishing process of far-infrared functional, embodiment 3:
(1) processed pin, textile fabric being immersed the cylinder water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977A dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 15, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977A weight ratio are 1: 0.06, dipping temperature is controlled at 85 ℃, pin, textile fabric dip time were controlled at 2 hours, put raffinate, draining behind pin, the textile fabric dipping;
(2) pin that above-mentioned impregnation process is crossed, textile fabric advance cylinder, water inlet heats up, add far-infrared finishing agent (far infrared auxiliary agent) SL-977B dipping simultaneously, the weight ratio (bath raio) of wherein pending pin, textile fabric and water is 1: 15, pin, textile fabric and adding far-infrared finishing agent (far infrared auxiliary agent) SL-977B weight ratio are 1: 0.06, dipping temperature is controlled at 85 ℃, pin, textile fabric dip time were controlled at 2 hours, put raffinate, draining behind pin, the textile fabric dipping;
(3) with the above-mentioned pin of crossing through impregnation process, textile fabric is washed at normal temperatures, adding neutralizer again handles, neutralizer can adopt acetic acid (HAC), consumption is 1.5g/l, neutralization back pH value is 6.5～6.8, processing time is 20 minutes, put raffinate after the neutralisation treatment, draining, wash again, add softener and handle, adopt softener to handle pin, during textile fabric, pin, textile fabric is 1: 0.04 with the weight ratio of add of softener, the soft treatment time is 30 minutes, pin, put raffinate after the textile fabric soft treatment, go out cylinder, dehydration, stack, cut open the width of cloth, typing, initial survey, stack, goods semi-finished product grey cloth.
Pin, textiles through above-mentioned postfinishing process processing, its far infrared normal emittance detects supervision center testing result all at 86-88% through the infrared product quality of country of national authority testing agency, substantially exceed 80% the standard of to be lower than of national regulation, its washable and resistance to elevated temperatures is checked through said mechanism, through 300 washings and 60 minutes continuous five dryings of 200 ℃ of high temperature, the far infrared normal emittance is all unattenuated, still reach former detection level, every physical index all meets or exceeds national standard.
Claims (5)
1, a kind of pin, textiles infusion process postfinishing process with far-infrared functional is characterized in that:
(1) processed pin, textile fabric being immersed the cylinder water inlet heats up, add far-infrared finishing agent SL-977A dipping simultaneously, the weight ratio of wherein pending pin, textile fabric and water is 1: (8～15), pin, textile fabric and adding far-infrared finishing agent SL-977A weight ratio are 1: (0.03～0.06), dipping temperature is controlled at 40 ℃～85 ℃, pin, textile fabric dip time were controlled at 1.5～2 hours, put raffinate, draining behind pin, the textile fabric dipping; Wherein far-infrared finishing agent SL-977A composition contain nanoscale tool far-infrared functional nonmetal oxide, metal oxide, with fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive;
(2) pin that above-mentioned impregnation process is crossed, textile fabric advance cylinder, water inlet heats up, add far-infrared finishing agent SL-977B dipping simultaneously, the weight ratio of wherein pending pin, textile fabric and water is 1: (8～15), pin, textile fabric and adding far-infrared finishing agent SL-977B weight ratio are 1: (0.03～0.06), dipping temperature is controlled at 40 ℃～85 ℃, pin, textile fabric dip time were controlled at 1.5～2 hours, put raffinate, draining behind pin, the textile fabric dipping; Wherein far-infrared finishing agent SL-977B composition contain nanoscale tool far-infrared functional nonmetal oxide, metal oxide, with far-infrared finishing agent SL-977A and fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive;
(3) above-mentioned pin, the textile fabric of crossing through impregnation process washed at normal temperatures, adding neutralizer again handles, neutralizer adopts weak acid, its consumption is 0.5～1.5g/l, neutralization back pH value is 6.5～6.8, processing time is 15～20 minutes, put raffinate, draining after the neutralisation treatment, wash again, adding softener handles, when adopting softener to handle pin, textile fabric, pin, textile fabric and add softener weight ratio be 1: (0.03～0.04), the soft treatment time is 20～30 minutes.
2, according to claim 1 or described pin, textiles infusion process postfinishing process with far-infrared functional, it is characterized in that: neutralizer weak acid is volatility weak acid.
3, according to claim 1 or described pin, textiles infusion process postfinishing process with far-infrared functional, it is characterized in that: volatility weak acid is acetic acid.
4, according to claim 1 or described pin, textiles infusion process postfinishing process with far-infrared functional, it is characterized in that: the temperature of softener treatment step is controlled at 30 ℃～55 ℃.
5, claim 1-4 each describedly have the pin of far-infrared functional, goods that textiles infusion process postfinishing process makes, it is characterized in that comprising natural, chemical fibre, the pin of synthetic fiber, the textile fabric handled through far-infrared finishing agent SL-977A, SL-977B; Wherein far-infrared finishing agent SL-977A composition contain nanoscale tool far-infrared functional nonmetal oxide, metal oxide, with fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive; Wherein far-infrared finishing agent SL-977B composition contain nanoscale tool far-infrared functional nonmetal oxide, metal oxide, with far-infrared finishing agent SL-977A and fiber in hydroxyl or amino reactive activity group, dispersant, stabilizing agent, chelating agent, adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410059961 CN1246522C (en) | 2004-04-29 | 2004-06-25 | Hosiery and textile dipping method post-dressing process with far infrared function and product thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410014783 | 2004-04-29 | ||
| CN200410014783.5 | 2004-04-29 | ||
| CN 200410059961 CN1246522C (en) | 2004-04-29 | 2004-06-25 | Hosiery and textile dipping method post-dressing process with far infrared function and product thereof |
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| Publication Number | Publication Date |
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| CN1570265A CN1570265A (en) | 2005-01-26 |
| CN1246522C true CN1246522C (en) | 2006-03-22 |
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| CN 200410059961 Expired - Fee Related CN1246522C (en) | 2004-04-29 | 2004-06-25 | Hosiery and textile dipping method post-dressing process with far infrared function and product thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103564891B (en) * | 2013-11-11 | 2016-01-20 | 镇江苏惠乳胶制品有限公司 | A kind of high-temperature-resistant glove and preparation method thereof |
| CN104878602A (en) * | 2015-04-01 | 2015-09-02 | 浙江神神丝绸家纺有限公司 | Preparation method for far infrared silk fibers and application thereof |
| CN113123133B (en) * | 2021-04-21 | 2022-10-25 | 浙江争好服饰有限公司 | Nano far infrared antibacterial fabric |
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