KR100565368B1 - A micro-fiber fabric for cover - Google Patents

Abstract

The present invention relates to a fabric for blocking harmful microorganisms and ultra-fine by-products derived from the present invention, the fabric is composed of 10 to 90 to 90: 10% by weight of cotton fiber and synthetic fiber microfibers, respectively, the average pore size of 0.05 to It is a high-density microporous fabric of 5.0 μm, which can effectively block allergens having a size of 10 μm or less recently reported, and it is comfortable to wear and does not cause static electricity, so it can be applied to various allergen-resistant products such as bed cover and baby clothing. This can be very useful.

Description

High-density fabric for the cover with cotton fiber {A micro-fiber fabric for cover}             

1 is a photograph taken after magnifying 10 times the high-density fabric according to Example 1 of the present invention 40 times using a light source irradiation microscope.

FIG. 2 is a photograph taken after magnifying 10 times the high-density fabric according to Comparative Example 1 using a light source microscope.

The present invention relates to a high-density fabric for a cover (cotton) mixed with cotton fibers, and more particularly to a high-density fabric for bedding cover and has an average pore size of less than 5.0 ㎛ even after washing 5 times or more, harmful microorganisms and ultra It relates to a high density fabric for the cover that can block fine by-products.

The rapid modernization of society as a whole after the Industrial Revolution provided a lot of convenience for humans, but the opposite has caused a big problem of environmental pollution. As a result, the life patterns of a number of microorganisms on earth that share a lifetime with humans have also changed, and recently, microorganisms that are very difficult to remove with conventional insecticides have emerged.

In addition, due to the development of apartments, the residential culture has become large, grouped, and focused on indoor living, and it has been found that many of the overlooked micromaterials are the causative agents of various diseases. It is known that the animal's hair and house dust mite. As the microorganisms that cause allergies by parasitic in the environment in which humans work, the most common ones are ticks, especially house dust mites having a size of about 100 to 300 μm, and the size of about 40 μm or less emitted from house dust mites. Eggplants are known to be the main factor of allergy to protein produced by the decomposition of feces and carcasses, and other allergens include animal hair such as cat hair, goose hair and duck down, cockroach 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 Chun-su's" house dust mite and clinical allergy "(Allergy, Vol. 11, No. 3). , pp. 297-308, 1991), "House dust mite has been identified as a global problem for allergic diseases and is the most important cause of respiratory allergy in Korea. House dust mite is a common cause of allergic diseases in the general population. It's not an exaggeration to say that there is nothing else. "

As these facts become known, countermeasures have been taken from various angles. The most effective method currently known as a countermeasure against such an allergic disease is to use a woven fabric having an average pore size of 10 μm or less by using a microfiber having a single yarn fineness of 0.5 denier or less (Japanese Patent Laid-Open No. 11-217745). However, in the case of such a fabric, there are some problems due to the general household goods due to the following problems. Typically, conventional high-density fabrics that focus only on reducing the size of the pores, when used in daily necessities such as bedding, have poor washing durability and rapidly increase the size of the pores after washing. This is very short. In addition, products that focus only on the role of the barrier membrane are woven fabrics made of natural fibers and then subjected to non-breathable coating treatments such as urethane or vinyl on the surface, which prevents the permeation of moisture and air. There is a disadvantage of being unsuitable as bedding due to the extremely low fit to the skin, adversely affecting the skin, and likewise, the durability of the laundry is poor, and the size of the voids after washing is rapidly increased.

In addition, recent studies have found that conventional fabrics with an average pore size of 10 μm do not effectively block allergens. For example, John W. Vaughan et al. ("Evaluation of materials used for bedding encasement: Effect of pore size in blocking cat and dust mite allergen" (J. of Allergy and Clin.Immunology, part I, Vol. 103, No. 2, pp. 227 ~ 231, February 1999)), has shown that pore sizes smaller than 10 μm to block house dust mite allergens such as Der fI and Der pI below And a fabric with an average pore size of less than 6 μm blocked allergens from cat hair. ”

In addition, although the allergen barrier fabric shown in Japanese Patent Application Laid-Open No. 11-217745 has a pore size of 4 to 10 μm, the fabric is inferior in applicability to the body in comparison with natural fabrics, and washed five times. The voids become larger by about 30% (maximum 12.5 μm), which not only can effectively block allergens that are 10 μm or less, especially about 6 μm, but also can be used for products such as bedding. There are problems such as duck down, goose down, etc., which are examples of internal fillings, come out and become new allergens, or appearance is not good.

In order to solve the above problems, the present inventors have developed an ultrafine pore fabric made of synthetic fibers (Korean Patent Registration No. 365188). However, in the case of a fabric made of such a synthetic fiber microfiber, there is some unsuitable aspects such as the wear on the body skin when using, and the use of static electricity occurs when using.

Accordingly, an object of the present invention is to block harmful microorganisms and micro by-products caused after washing 5 times or more, and to have a good fit to the body, and to suppress the generation of static electricity, which adversely affects the skin, to high density for the kava. Is in providing fabric.

According to the present invention to achieve the above object, in the high-density microporous fabric, 10: 90 to 90: 10% by weight of cotton fiber and synthetic fiber microfiber having a non-shrinkage rate of 4 to 20%, dry heat shrinkage of 8 to 30%, respectively The high density fabric for the cotton fiber is mixed is composed of, characterized in that the average pore size is 0.05 to 5.0㎛.

Hereinafter, the present invention will be described in more detail.

In general, cotton fiber is thicker than synthetic fiber microfiber, so when it is used as a warp or weft yarn, when processed into a fabric, there is a problem that a large number of pores of considerable size are formed after about 10 washings. Due to the fact that it does not block allergens efficiently, it is not suitable for use as bedding cover for allergy prevention.

The high-density microporous fabric according to the present invention is a synthetic fiber microfiber yarn having a non-shrinkage ratio (BWS) of 4 to 20% and a dry heat shrinkage ratio (180 ° C., non-contact yarn measurement) of 8% to 30%. It can be produced by weaving a hybrid fabric of microfiber yarn and cotton fiber, which is any one selected from the group consisting of microfiber yarns, polyester / nylon composite split yarns and mixed yarns thereof, and post-treating the fabric. The non-shrinkage ratio of the synthetic fiber microfiber in this fabric is suitably 4 to 20%. If the non-shrinkage rate is less than 4%, it does not shrink enough during the normal dyeing process, and thus, it does not compress enough cotton fibers used as warp or weft yarns, thereby suppressing the generation of significant size voids at the intersection of warp and weft yarns. Since it is impossible to block allergens efficiently, eventually it becomes unsuitable for use as an allergy prevention bedding cover, and when the amount exceeds 20%, the product's touch becomes stiff. Inadequate In addition, the dry heat shrinkage rate of the synthetic fiber microfiber is preferably 8 to 30%. If the dry heat shrinkage is less than 8%, it is difficult to shrink enough during the high temperature sheet processing after dyeing. Therefore, it is difficult to effectively compress cotton fibers used as warp or weft yarns. Since it is not possible to further suppress the occurrence of size pores and effectively block allergens, the end result is insufficient for use as an allergy prevention bedding cover. Not only is it stiff, but it is also inadequate due to the problem of poor washing resistance.

The blending ratio of microfiber and cotton fibers in the fabric is 10:90 to 90:10 wt%, more preferably 20:80 to 80:20 wt%, and particularly preferably 40:60. -60: 40 weight%. If the blending ratio of the cotton fiber is less than 10% by weight, it may cause problems such as poor fit and generation of static electricity. When using a large amount, it is difficult to weave the fabric having a desired average pore size. As a result, allergens are not blocked efficiently, which makes them unsuitable for use as bedclothes for allergy prevention.

The single yarn fineness of the synthetic fiber microfiber for producing a fabric suitable for achieving the object according to the present invention is preferably 0.5 denier or less (in the case of a composite split yarn, single yarn fineness after dividing), and more preferably 0.3 denier or less. Do.

The high-density microporous fabric of the present invention is prepared by performing a conventional post-processing process such as aging, rinsing, refining, dyeing, casting and antistatic processing after weaving, and then further performing a cire processing. The fabric to be used does not damage the temperature range, for example, 200 ℃ or less in the case of cotton, about 130 ℃ or less in the case of polyester or nylon and the present invention does not specify the processing temperature, but usually 50 to A roller temperature of 200 ° C., more preferably 60 to 130 ° C., is suitable. In addition, the conveying speed of the fabric is set in consideration of the economics and productivity, the roller temperature and the material of the fabric, the feed rate of 10 to 100m / min or more, more preferably 20 to 80 m / min is preferable. Similarly, the pressure conditions of the rollers may also be set at ordinary conditions, preferably at 10 to 50 tons, more preferably at 25 to 40 tons of roller pressure conditions, and at 70 ° C. for a roller temperature of 65 to 70 m / min. It is especially preferable to process at a speed of 28 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. If there is a problem that the product is defective, the conveying speed is less than 10m / min, the tactile properties are increased, but there is a problem of non-uniform voids, too high, such as exceeding 100m / min, there is a problem that the fabric is rigid, the pressure of the roller If the amount is less than 10 tons, there is a disadvantage in that the treatment agent remains between the fibers, and if it exceeds 50 tons, the short circuit of the fiber may occur, thereby increasing the size of the pores and causing the non-uniformity.

Such post-processing is particularly important with regard to the body applicability and wash durability of the high density microporous fabric of the present invention. In addition, in order to further minimize the static problem that arises in conventional fabrics, it is possible to neutralize the charge on the surface of the fabric by performing a conventional electrification treatment, it may be prepared by performing a conventional softener treatment and dyeing. In addition, by attaching a natural or synthetic fabric to the surface of the high-density ultra-fine microporous fabric may have a double or multiple structure can be applied to more various applications.

The high density microporous fabric according to the present invention which can be produced by the above process has more than 150 inclinations and more than 110 wefts per inch, and preferably has an average pore size of 0.05 to 5 μm. These fabrics have a high air permeability of 1.0 to 30 cfm compared to conventional fabrics while maintaining a smaller average voids, and have a moisture permeability of 1500 to 3,500 g / m 2 / 24h, so that the applicability to the body is better than that of natural fabrics. Similarly, it can be used for various allergy-preventing household goods. For example, the fabric of the present invention may be utilized to block harmful microorganisms and micro by-products emitted therefrom. That is, the fabric of the present invention has a pore size of 0.05 to 5㎛, can block most of the conventional allergens, and is suitable for the use of the cover for the existing household goods such as bedding. In addition, the fabric of the present invention can be used as a patient article that emphasizes the necessity of hygiene and sterilization, that is, a cover sheet for medical bed mattresses, bedding and the like and curtain paper used for the isolation of the patient, dolls, baby clothes, infant play It can be used for various uses, such as household goods cover, such as appliances. Natural or synthetic wovens, nonwovens, films, sheets, etc. may also be bonded to form double or multiple structural forms.

The fabric of the present invention has high porosity stability due to washing, even after washing five times or more, the pore size of the fabric is maintained below 5.0 μm on average to maintain the long-term blocking effect of harmful microorganisms and ultra-fine by-products.

Hereinafter, examples and comparative examples are presented to help understand the present invention. However, the following examples are merely provided to more easily understand the present invention, and the present invention is not limited by the following examples.

Example 1

A polyester yarn (100 denier 192 filament, manufactured by Huvis, trade name HMY) having a non-shrinkage ratio of 5% and a dry heat shrinkage ratio of 10% was inclined, and blended using cotton 60'S as a weft yarn [polyester weight: cotton weight (%) = 45: 55] The woven fabrics were sized using a hosiery (Samsung Oil & Fat TF 470) and then flattened to a width of 165 sheets per inch by 65 inches using an air jet loom.

The fabrics were subjected to refinement-washing-silket processing (NaOH) for 12 hours at 70 ° C. to 98 ° C. according to a general dyeing method, and then maintained at 40 ° C. for 2 hours by a two bath method, and then heated to 65 ° C. or more for color rendering for 30 minutes. It is dyed for 45 minutes in the dark and 60 minutes in the dark. After the dyeing is complete, the fabric was cooled and dried at 70 ° C. for 15 minutes. The dyed fabric was sieved with a roller pressure of 30 t at a feed rate of 60 m / min at 100 ° C. using a sheet processing machine to produce a high density microporous fabric.

Comparative Example 1

The same procedure as in Example 1 was repeated except that no Cire was processed.

Comparative Example 2

The same procedure as in Example 1 was repeated except that polyester yarn (100 denier 192 filament, manufactured by Huvis, trade name HMY) having a non-shrinkage ratio of 2% and a dry heat shrinkage ratio of 5% was used. As a result, the average pore size was inadequate to about 6㎛, and in particular, the maximum pore size became more than 20㎛, which was inappropriate for blocking harmful byproducts.

Comparative Example 3

The same procedure as in Example 1 was repeated except that a polyester yarn (65 denier 192 filament, manufactured by Huvis, trade name Gentose) having a non-shrinkage ratio of 25% and a dry heat shrinkage ratio of 30% was used. As a result, the average pore size was suitable, but the fabric was stiff and unsuitable for bedding, and the average pore size after 5 washes was 7 μm or more, which was unsuitable for blocking harmful by-products.

The fabrics of Example 1 and Comparative Example 1 were washed 10 times and photographed using a light source irradiation microscope (magnification: 40 times). FIG. 1 is a planar photograph of the microporous fabric prepared by the method of Example 1, and FIG. 2 is a planar photograph of the shape of the microporous fabric without the Cyre processing of Comparative Example 1. FIG. In Figures 1 and 2, the bright appearance of the intersection of the weft and the warp of the knitted fabric is the appearance of the void formed by the transmitted light. As in the case of FIGS. 1 and 2, both are woven at high density, but in the case of FIG. 1 through the Cire processing, it can be seen that the voids are hardly formed, but in the case of FIG. It can be seen that this is distributed. That is, it can be seen that the size and distribution of the voids can be efficiently controlled by processing the pores formed according to the fineness of each other in the knitting process of the surface: polyester (45:55) teaching material. .

In addition, in order to determine the degree of void retention of the fabric through the 5, 20, 50 washes of the fabric woven in Example 1 before and after washing the pore size change, moisture permeability and air permeability measured by the following Table 1 It was. The washing method was carried out continuously by adding neutral detergent using a 10kg washing machine fully automatic course for general household use, and the average pore size was presented by the present inventors, and the pore measuring method certified by the Korea Research Institute for Living Environment (certification number: 20576) was used. Moisture permeability was measured by the Korea Textile Testing Institute (FITI), an accredited test institute of Korea using the water method proposed in KS K 0594, and the Frazier method of KS K 0570-1997 of air permeability. Frazier Method) was also measured by the Yarn Textile Testing Institute (FITI). In addition, the fabric of Comparative Example 1 was tested in the same manner, and the results of the comparison with Example 1 are shown in Table 2.

Fabric Properties of Example 1 Before washing 5 times after washing After washing 20 times After 50 washes Remarks Average pore size (㎛) 0.06 0.08 0.09 0.11 0.05 increase Minimum pore size (㎛) 0.02 0.02 0.02 0.02 - Maximum pore size (㎛) 4.80 4.80 5.00 5.50 0.70 increase Moisture permeability (g / ㎡ / 24h) 3,207 3,291 3,346 3402 6.1% increase Air permeability (cm 3 / cm 2 / s) One One 2 2

division Example 1 Comparative Example 1 Average pore size (㎛) 0.06 27x increase Minimum pore size (㎛) 0.02 - Maximum pore size (㎛) 4.80 2.5x increase Average pore size change after 50 washes (㎛) +0.05 9.4x increase

As shown in Tables 1 and 2, the high-density microfine fabric of the present invention can be seen that even after 50 washes, the change in the voids greatly satisfies the present 0.05 ~ 5.0㎛ presented before the present invention. Moisture permeability and air permeability were also maintained in good condition, it can be seen that excellent allergy prevention properties and body applicability are maintained without deterioration due to washing.

As described above, the fabric of the present invention is effectively inclined two times during dyeing and re-processing by selecting a synthetic fiber material having a non-shrinkage range of 4 to 20% and a dry heat shrinkage ratio of 8 to 30%. Alternatively, the cotton fiber used as the weft is sufficiently pressed to maintain an average pore size of 0.05 to 5 μm even after five or more washings, thereby effectively blocking harmful microorganisms and ultra-fine by-products resulting therefrom. The problem has been improved, and it can be applied to various anti-allergic products such as bed cover and baby clothing.

Claims (8)

In the high-density microporous fabric, cotton fiber and synthetic fiber microfiber yarns having a non-shrinkage ratio of 4 to 20% and dry heat shrinkage ratio of 8 to 30% are respectively mixed at 10:90 to 90:10 wt%, and 50 to 200 ° C after weaving. High density for cotton fibers mixed with a cotton fiber, characterized in that the average pore size is 0.05 to 5.0 μm, which is processed at a roller temperature of 10 to 100 m / min, a feed speed of 10 to 100 m / min, and a roller pressure of 10 to 50 ton. textile. delete [Claim 2] The high-density fabric for a cotton fiber blended cover according to claim 1, wherein the synthetic fiber microfiber is any one selected from the group consisting of a polyester microfiber yarn, a polyester / nylon composite split yarn and a mixed yarn thereof. The method of claim 2, wherein the high-density fabric is a cotton fiber characterized in that the processing (sire) at a roller temperature of 60 to 130 ℃, fabric feed rate of 20 to 80 m / min, roller pressure of 25 to 40 ton High density fabric for mixed cover. delete The high-density fabric for cotton blended with cotton fibers according to claim 1, which has a pore size of 5.0 µm or less on average after washing 5 times or more. The high-density fabric for a cotton blended cotton fiber of claim 1, wherein a natural or synthetic fabric is bonded to the surface of the high-density ultra-fine pore fabric to have a double or multiple structure. delete

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