KR20120135621A - Micro-exothermic fabric containing tencel fiber - Google Patents

Abstract

PURPOSE: An exothermic fine micropore fabric which is woven by synthetic fibers as warp and lyocell-based fibers as weft is provided to block harmful microorganisms and to save energy. CONSTITUTION: An exothermic fine micropore fabric is woven by synthetic fibers as wrap and lyocell-baed fibers as weft and generates heat by the increase of relative moisture. An exothermic tencel fiber is twisted by tencel fibers and exothermal-processed acryl-based fibers. The twist factor of the exothermic tencel fibers is 200-300 TM. The exothermic fine micropore fabric is woven by an air-jet method. [Reference numerals] (AA) Changing fabric surface temperature change by moisture change; (BB) Temperature(°C); (CC) Time(minutes); (DD) Relative moisture(%); (EE) Sample; (FF) Humidity

Description

Micro-Exothermic Fabric Containing TENCEL Fiber

The present invention relates to a pyrogenic microporous fabric in which tencel fibers are mixed, and more particularly, to a pyrogenic microporous fabric that is woven with a synthetic fiber as a warp yarn and a lyocell-based fiber as a weft yarn, and generates heat according to an increase in relative humidity. It is about.

There is an increasing interest in eco-friendly materials around the world. Accordingly, development of eco-friendly materials obtained from natural raw materials or blended yarns incorporating natural fibers is expanding.

On the other hand, the recent increase in patients suffering from diseases such as respiratory allergies or atopic dermatitis, many micro-materials are found to be the cause of these diseases. In particular, it has been found that the main cause of allergic diseases, which are rapidly increasing in recent years, are hairs and dust mites of animals.

In general, dust mites are known to have a size of about 100 to 300 µm and feces and carcasses of house dust mites are about 40 µm or less. These dust mites and their excretion and corpses have been found to be the major factor of allergy. Other allergens are known as cat hair, goose hair, animal hair such as duck down, cockroaches, and cockroach excretion.

In this context, Platts-Mills TAE et al., "Dust mite allergens and asthma, Report of a Second International Workshop" (J. of Allergy and Clin. Immunology, Vol. 37, pp. 1046-1050, 1992) Group I Mite Allergen has proven that most of it is related to relatively large fecal particles with a diameter of 10 to 40 μm. ”Hong Cheon Soo's“ House Dust Mites and Clinical Allergies ”(Allergy, Vol. 11, No. 3). , pp. 297-308, 1991), "House dust mites have been identified as a global problem for allergic diseases and the most important cause of respiratory allergic diseases in Korea. House dust mites are a common cause of allergic diseases in the general population. It's not an exaggeration to say that there is nothing else. "

Thus, one of the efficient methods that can be considered to prevent and treat diseases caused by such micro-hazardous materials is to make fabrics of special materials that antigens cannot pass through. Typically, microporous fabrics are being developed to block house dust mites, excreta and dead bodies, which are major factors of allergy. However, simply reducing the pore size of the fabric can cause many problems. For example, moisture and air permeability are poor, which may adversely affect the skin. In addition, in the case of a fabric made of a synthetic fiber microfiber, there is some unsuitable aspects such as the wear on the skin is poor, the use of static electricity occurs during use.

The present invention is to provide a microporous fabric that can prevent the penetration of harmful substances such as house dust mite and inhibit the growth of bacteria using environmentally friendly natural materials.

In addition, the present invention is to provide a fabric excellent in hygroscopicity and warmth by exothermic reaction with moisture, durability, antistatic function, washability.

In addition, the present invention seeks to provide a method for effectively producing such fabrics.

Accordingly, the present invention discloses an exothermic microporous fabric which is woven with synthetic fibers as a warp yarn and woven with lyocell-based fibers as semi-natural fibers, and generates heat as the relative humidity increases.

The lyocell-based fiber may be, for example, TENCEL ™ fiber, but is not limited thereto. In the present invention, pyrogenic tencel fibers can be preferably used. In a specific example, the pyrogenic tencel fibers may be a blended yarn of the tencel fibers and the extruded acrylic fibers.

In the case of tencel fibers, there is a problem that weaving is difficult as weaving in the wind when weaving with air jet (Air Jet) for knit. Therefore, the inventors of the present invention successfully weaved by twisting the tencel after repeated experiments and studies. The twisting method for the tencel may be performed using, for example, a twisting machine. The higher the twist coefficient, the greater the strength and frictional force, and therefore, it is preferably given to 200 to 300 TM. The inclination has a fineness of 65 deniers and may be 190 to 220 filaments.

In the exothermic microporous fabric of the present invention, the fabric may be woven by an air jet method, and after weaving, may be subjected to refining division, washing, dyeing, tender processing, and sheet processing.

The fabric woven in this way may have a weft density per inch (100-130), and has an average pore size of 10 μm or less, preferably less than 6 μm, more preferably 0.05 to 5.0 μm, and thus, antibacterial, It may have an antibacterial effect.

The exothermic microporous fabric of the present invention is exothermic, and excellent in cold protection and thermal insulation effect, and can also exhibit antimicrobial performance against harmful substances such as house dust mites. By using these characteristics, it can be effectively used in various fields such as covering paper such as bedding, curtain paper, clothes for infants and underwear.

1 is a test result of the surface temperature change of the fabric according to the humidity change according to Experimental Example 1 of the present invention.

The present invention provides a pyrogenic microporous fabric which is woven with a synthetic fiber as a warp yarn and woven with a lyocell-based fiber and generates heat as the relative humidity increases.

Synthetic fiber microfiber is not particularly limited and may be variously selected according to desired physical properties. For example, the synthetic fiber microfiber may be any one selected from the group consisting of polyester microfiber yarns, polyester / nylon composite split yarns, and mixtures thereof. .

The lyocell based fiber may be, for example, tencel fibers. In the above, Lyocell is a term recognized by BISFA, an international organization for the establishment and certification of textile standard terminology, and Kotolz has requested a separate generic name for Solvent Spun Cellulose. The official name for Tencel fibers are currently the only commercially available lyocell-based fibers. Thus, in the present specification, the term 'lyocell-based fiber' is used interchangeably as 'tencel fiber', whereby the lyocell-based fiber should not be limited to tencel fiber.

Tencel fiber is a cellulose-based fiber made from 100% natural pulp obtained from Eucalyptus. It has characteristics such as silky soft touch, absorbency better than cotton, and strong durability. It is eco-friendly and 99.9% antibacterial. It has many advantages such as high strength, high strength, and shape safety. As a result, TENCEL is gaining sensation in the global textile market, and recently, due to environmental movement, it has emerged as the most preferred next generation fiber from fashion enthusiasts around the world.

Specific examples of tencel fibers include TENCEL of Lenzing, Cocel of Hanil Synthetic, Alceru of Zimmer, Newcell of Akzo and Asahi, etc. as commercial lyocell fibers. Also included are Lenzing Tencel A-100, Tencel Standard, Tencel LF and the like which have suppressed the fibrillation of lyocell fibers.

These tencel fibers are generally used for knits and are difficult to weave by blowing in the wind when weaving air jets. In the present invention, after twisting the tencel fibers were used as weft yarns. In this way, by imparting twist to the tencel fibers mainly used for knits, it is possible to prevent blowing during the air jet weaving, thereby enabling effective weaving.

In the present invention, pyrogenic tencel fibers can be preferably used. In general, most of the fibers have a hydrophilic group, and generates a little heat while absorbing moisture in the air. A hygroscopic pyrogenic fiber in a practical sense refers to a fiber having a high hygroscopic hydrophilic group to the fiber to enhance exothermic performance.

Therefore, in the present invention, the exothermic tencel fibers mean that the exothermicly processed tencel fibers. The exothermic processing method is not particularly limited, and examples thereof include a method of treating a hygroscopic heat generating agent for attaching a ceramic or other exothermic powder to a fiber surface with a binder. In addition, a method of mixing the exothermic powder in the fiber spinning step, and a method of modifying the acrylic fiber to impart moisture absorption heat generation. The product which gives hygroscopic heat generation property to an acrylic fiber uses the method of hydrolyzing the nitrile group in an acrylic fiber to a hygroscopic carboxyl group.

In one preferred embodiment, the exothermic tencel yarn of the present invention may be a blended yarn of 20% of the exothermic acrylic yarn imparting hygroscopic heat generation property to 80% of the tencel yarn. In the case of the blended yarn, the hygroscopic heating, antibacterial, deodorizing function of the pyrogenic acrylic yarn and the perfect moisture control function through the nanofibrill structure of the tencel exhibit excellent functions.

The fineness of the acrylic fiber may be any of 0.8 denier and 1.5 denier, and can be selected depending on the intended use. The method of imparting exothermicity to acrylic yarn may be performed by, for example, treating with an aqueous solution of triethylenetetramine-based compound to introduce an amine group, then treating with an aqueous alkali solution, and then neutralizing the emulsion.

The method of imparting twist to the exothermic tencel yarn is not particularly limited and may be performed using, for example, a twisting machine. Twisting machine (twisting machine) refers to a machine that twists a single thread drawn from a spinning machine into two or more strands.

 In a preferred example, the twist coefficient can be given between 200 and 300 TM, where the twist coefficient refers to the number of twists contained in 1 inch of yarn. The greater the number of twists, the higher the strength, and the higher the number of twists, the stronger the twist in the case of coarse threads and the weaker twist in the thin thread. Therefore, the strength of the twist cannot be expressed simply by the large and small number of the twist, and is represented by a number called the "twist coefficient" in relation to the thickness of the yarn. The twist coefficient indicates that the larger the number, the stronger the twist.

The blending ratio of synthetic fiber microfiber and lyocell fiber in this fabric is 10: 90? 90: 10% by weight, preferably 20:10? 80: 20 wt%, more preferably 40: 60? 60: 40% by weight.

Synthetic fibers that are warped for producing the fabric of the present invention may have a fineness of 60 to 70 deniers and 190 to 220 filaments. In a specific example, the warp can be commercially available 65 denia / 204 filament polyester or 68 denia / 192 filament polyester. By having such fineness, the air gap is small, and the penetration of house dust mites can be effectively blocked. If the slope is 50 denier, the air gap becomes larger, and dust mites can penetrate.

The pyrogenic microporous fabric of the present invention may be woven in an air jet manner. Air jet method is a method of weaving the fabric by blowing the weft by the force of blowing air. An air jet loom is used for weaving in an air jet manner. After weaving, conventional post-processing treatments such as aging, rinsing, refining, dyeing, casting and antistatic processing can be carried out, followed by further processing.

The method for dyeing the fabric of the present invention is not particularly limited and may be performed according to known dyeing methods. For example, the fabric can be dyed with reactive dyes, direct dyes and bat dyes and exhibits excellent color dyeability. Especially when using a reactive dye, excellent color yield can be obtained, and caustic soda treatment is not necessary.

 The sieving is carried out at a temperature range in which the fabric used is not damaged, for example about 130 ° C. or less for polyester or nylon, although the present invention does not specify a processing temperature, it is usually 50 to 200 ° C., more preferred. For example, a roller temperature of 60 to 130 ° C. is appropriate. In addition, the conveying speed of the fabric is set in consideration of the economics and productivity and the roller temperature and the material of the fabric, a feed rate of 10 to 100 m / min or more, more preferably 20 to 80 m / min is preferable. Similarly, the pressure conditions of the roller may also be set at ordinary conditions, and it is preferable to carry out at a roller pressure condition of 10 to 50 ton, more preferably 25 to 40 ton, and a roller temperature of 80 ° C. and 60 m / min. It is particularly preferable to process at a speed of 30 tons. Here, if the temperature of the roller during the sheet processing is less than 50 ° C., the size of the voids becomes large, and if it exceeds 200 ° C., the temperature of the fabric to be processed exceeds the temperature range in which the fabric is damaged, which causes deformation and damage to the touch. There is a problem that it becomes a defective product. If the conveying speed is less than 10 m / min, the tactile properties are increased, but there is a problem of non-uniform voids, too high, such as exceeding 100 m / min, there is a problem that the fabric is rigid. If the pressure of the roller is less than 10 tons, there is a disadvantage in that the treatment agent remains between the fiber all, and if more than 50 tons there is a possibility that the short circuit phenomenon of the fiber occurs to increase the size of the voids and uneven.

Such post-processing is particularly important with regard to body applicability and wash durability of the microporous fabric of the present invention. In addition, in order to further minimize the static problem that arises in conventional fabrics, it may be possible to neutralize the charge on the surface of the fabric by performing a charging treatment, it may be prepared by performing a conventional softener treatment and dyeing. If you use a permanent antistatic agent in the charging process, unlike the general antistatic agent, the static electricity does not occur even after more than 10 washes. Therefore, it is preferable to use a permanent antistatic agent in the charging process.

The pyrogenic microporous fabric according to the present invention has 100 to 130 weft yarns per inch, preferably having an average pore size of 10 μm or less. Research suggests that fabrics with an average pore size of more than 10 µm do not effectively block allergens. Another recent study found that the average pore size to effectively block allergens from cat hair is less than 6 µm. Thus, the average pore size may be preferably 0.05 to 5.0㎛.

Since the fabric of the present invention has micropores, it can block most of the conventional allergens. Microporous fabrics containing tencel fibers according to the present invention, by including tencel fibers, not only has a silky soft texture, better hygroscopicity than cotton and excellent durability, but also inhibits bacterial growth, prevents dust mite penetration, and prevents static electricity. Has a laundry power. In particular, fibers that breathe using tencel fibers with hygroscopicity / heat generation, fibers with good hygroscopicity, fibers with excellent thermal insulation and 99.9% antimicrobial properties, and are in direct contact with skin. It has the best properties as a cotton (filling material), clothes for children, play equipment and bedding. Dermatologists and sleep researchers have shown that TENCEL is extremely effective at helping you sleep better because it absorbs too much water. Therefore, the fabric of the present invention can obtain the effect of raising or maintaining the haptic temperature of 3 ° C. or more, and has an effect of reducing energy for heating.

In addition, the fabric of the present invention can be used as a patient article that is important for hygiene and sterilization, that is, a cover sheet for medical bed mattress, bedding and the like and curtain paper used for the isolation of the patient.

Depending on the application, natural or synthetic woven fabrics, nonwoven fabrics, films, sheets, and the like may be adhered to each other and used in a double or multiple structural form.

Hereinafter, the present invention will be described in detail with reference to examples. However, these examples are intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1

Weaving was carried out by weaving a weft using an air jet, using 50 jets of exothermic tencels having a slope of about 65 denier and 204 filaments as the warp yarn, and a number of pyrogenic tencels having a twist of about 300 TM. In case of using 50 tencells, the air gap can be made smaller than using ten tencels, which effectively blocks dust mite penetration. Weft density per inch was 110 and weaved to a width of 71 inches.

The prepared fabrics were aged for 12 hours at 70-98 ° C., and washed with water, followed by rapid dyeing using a two-bath method, which is a general dyeing method. Then, the process was subjected to tender processing with 122 working densities, 65 inches in width, and the electrostatic treatment was performed for the prevention of static electricity using a permanent antistatic agent during processing. After the processing was completed, additional processing was performed to improve the gloss and feel of the fabric. Shire processing was performed at 80 degreeC with the feed speed of 60 m / min, and the roller pressure of 30 tons.

[Experimental Example 1]

In order to confirm the exothermic properties of the fabric fabric prepared according to Example 1, the Korean Clothing Testing Institute was asked to "test the surface temperature change of the fabric according to the humidity change". The test measured temperature and humidity changes in the chamber and the temperature and humidity were varied from 34 ± 2 ° C, 20 ± 4% RH to 20 ± 2 ° C and 90 ± 4% RH, respectively. Test results are shown in Table 1 and Figure 1, respectively, the exothermic properties of the fabric.

[Table 1]

Referring to Table 1 and Figure 1, it can be seen that the fabric produced by the method according to the present invention generates heat as the temperature and humidity rise. Therefore, the exothermic fabric of the present invention may be effectively used for bedding or clothing requiring a warming effect.

The present invention has been described above with reference to preferred embodiments thereof. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (5)

A pyrogenic microporous fabric which is woven with a synthetic fiber microfiber as a warp yarn and is made with a pyrogenic tencel fiber as a weft yarn, and generates heat as the relative humidity increases.
The method of claim 1,
The exothermic tencel fiber is a pyrogenic microporous fabric, characterized in that the twist is given by the blended yarn of the tencel fiber and the acrylic fiber heat-processed.
The method of claim 2,
A pyrogenic microporous fabric, characterized in that the twist coefficient of the heat generating tencel fibers is 200 to 300 TM.
4. The method according to any one of claims 1 to 3,
The warp yarn is a heat generating microporous fabric, characterized in that the fineness is 60 to 70 denier, 190 to 220 filament.
4. The method according to any one of claims 1 to 3,
The fabric is a pyrogenic microporous fabric, characterized in that the weft density per inch (100) 130.

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