KR101295045B1 - Manufacturing method of exothermic non-woven fabric - Google Patents

Abstract

PURPOSE: A Textile which manufactured by the manufacturing method of nonwoven textile having heating function is provided to progress the optimal heat generation at 20~ 25°C which maintains constant humidity and a condition which is over than 80% of relative humidity and progress absorption as well as heat insulation by sweat and outside steam generated from the body to keep the warmth. CONSTITUTION: A manufacturing method of nonwoven fabric having heating function forms an airlaid web with moisture-absorbing heat generation acryl short cut that has the size of fiber is 1.0 ~ 2.0 de and the length of fiber is 2 ~ 6mm length and PP/PE Bicomponent that has the size of fiber is 1.0 ~ 2.0 de and the length of fiber is 2 ~ 6mm length in a weight ratio of 2:8 to 5:5 and manufactures PP / PE fiber by thermally fusing with hot air of 110 ~ 150°C to the formed web.

Description

Manufacturing method of non-woven fabric having a heating function {Manufacturing method of exothermic non-woven fabric}

The present invention relates to a method for producing a nonwoven fabric having a function of generating heat under absorption or absorption.

There are many materials that can generate heat under specific conditions. However, in general, the metal carboxyl and acrylate groups of the fiber can generate heat while absorbing moisture.

In the prior art, a fiber having a high hygroscopic group of high hygroscopicity has been introduced to enhance hygroscopic heat-producing performance, which is widely used as a winter textile product and an industrial material requiring high hygroscopicity.

As a method of hygroscopic heat generation to a fiber material, a ceramic material or other hygroscopic heat-generating powder is attached to a fiber surface with a binder, a hygroscopic heat-generating powder is mixed in a fiber spinning step, and a hygroscopic heat generating component is used for post-processing. There is a method of impregnating padding to the fabric.

In the case of the impregnating padding method to the fabric, there is a disadvantage in that the hygroscopic performance is poor due to the method of manufacturing a fabric that can easily absorb moisture and generate heat.

In addition, a method similar to a process of preparing superabsorbent polymers by modifying acrylic fibers may be used. When hydrolyzing a material having a nitrile group and converting it into a carboxyl group, it may give a function of hygroscopic heat generation, which is converted into a carboxyl group. The problem of attaching the polymer and the hydrophilization process to the fiber itself damages the fiber fabric, and in the post-processing process such as dyeing of the fabric, the acrylate fiber has a disadvantage in that the hygroscopic exothermic performance is poor due to alkali treatment.

On the other hand, the acrylic fiber which is responsible for the heating function exhibits a stiff touch, which appears intact in the fabric and has been restricted in its use. In particular, in the case of the facial mask pack for cosmetics is a physical property that is necessary to feel soft and flexible.

On the other hand, in recent years in the fever due to the cold and functional mask pack products have been used, but the hygroscopic heat effect is not excellent, there is a short heat generation time disadvantage. Therefore, there is a need for a method of effectively and durablely introducing fibers and components capable of generating heat absorbing moisture and developing a moisture absorbing heating fabric that can be used semi-permanently.

The present invention has been made in view of the above point and its object is to provide a method for producing a fabric capable of absorbing or hygroscopic heating.

The present invention is to provide a method of fabricating by mixing the natural fibers, such as cotton or tencel fibers into synthetic fibers in order to give flexibility and soft touch to the exothermic fabric.

In another aspect, the present invention is to provide a method for processing the fabric so that the heat generated of the fabric can be effectively exhibited.

The present invention provides a method for producing a nonwoven fabric having a heat generating function by using a spunlace method and / or needle punching method which is a known method by mixing the synthetic fibers, reconstituted fibers and natural fibers in order to achieve the above object.

The present invention also provides a method for producing a nonwoven fabric having an exothermic function having an excellent hygroscopic exothermic function by treating the fiber fabric with a process of hydrolyzing and hydrolyzing an acrylic polymer that is responsible for the exothermic function included in the nonwoven fabric including the hygroscopic exothermic acrylic fiber. do.

Fabrics produced by the manufacturing method of the present invention, which is given such a function, can be applied as functional fabrics or fabrics for cosmetic or cosmetic mask packs, and maintain heat retention by absorbing and absorbing heat generated by sweat and external water vapor generated in the human body. .

In the manufacturing method of the present invention, when the absorbent or hygroscopic exothermic acrylic fiber having a fineness of 1.0 to 2.0de and a fiber length of 30 to 55mm is formed, a directional web is formed through a carding process and then laminated in one direction or in a random arrangement. It is a method for producing a nonwoven fabric having a heat generating function by the inter-fiber entanglement and entanglement by a spunlace method or / and needle punching method by laminating at a basis weight 30 ~ 100g / m ² preferably 40 ~ 90g / m ² .

In addition, the present invention is 1.0 ~ 2.0de fine fiber, 30 ~ 55mm fiber length absorption or hygroscopic exothermic acrylic fiber and 0.8 ~ 1.2de fine fiber, 30 ~ 55mm fiber length short fiber, tencel short fiber, polyester short fiber, polyamide When one or more short fibers selected from short fibers and fineness of 1.0 to 2.0 de and acrylic short fibers of 30 to 55 mm in fiber length are mixed and blended in a weight ratio of 2: 8 to 5: 5, they form a directional web through a carding process. Laminated in one direction or lamination in a random arrangement, the basis weight 30 ~ 100g / m ² preferably 40 ~ 90g / m ² by laminating the spunlace method and / or needle punching method by the inter-fiber entanglement and entanglement Provided are a method for producing a nonwoven fabric having a function.

If 100% of the exothermic acrylic material is used, it is advantageous to obtain the exothermic performance, but the production cost is expensive, and the use of the stiff hand is restricted in use. Therefore, by mixing the natural fibers and synthetic fibers such as cotton or tencel fibers to minimize the above restrictions.

In addition, the present invention is a water absorption or absorption hygroscopic acrylic short fiber (Short cut) having a fineness of 1.0 ~ 2.0de, a fiber length of 2 ~ 6mm and a PP / PE Bicomponent fiber having a fineness of 1.0 ~ 2.0de, a length of 2 ~ 6mm 2: 8 to It provides a method for producing a non-woven fabric having a heat generating function by forming an airlaid web at a weight ratio of 5: 5, and heat-bonding the PP / PE fibers with hot air at a temperature of 110 ~ 150 ℃ to the formed web.

The present invention also proposes a method for further improving the exothermic performance by post-processing the nonwoven fabric prepared above.

That is, the present invention dissolves 1 to 5% by weight of a nonionic water-soluble acrylic binder or a urethane-based binder in a solution in which sulfonated iron-phthalocyanine salt is dissolved in 1 to 5% by weight of the total weight of the solution in distilled water. Impregnated padding treatment on the non-woven fabric prepared in, and provides a method for producing a nonwoven fabric having a heating function, characterized in that the drying in a dryer of 110 ~ 150 ℃.

Furthermore, in the present invention, the scouring and dyeing process of the nonwoven fabric prepared above is performed by refining in a solution in which 0.5 to 3 wt% of citric acid and 0.5 to 3 wt% of acetic acid are dissolved in distilled water, respectively, to the total weight of the solution. During the process provides a method for producing a nonwoven fabric having an exothermic function characterized in that the dye is maintained by maintaining the pH of 3 to 4 using citric acid or acetic acid.

The fabric prepared as described above may be dried for 30 minutes or more in a condition of 90 degrees or more in an oven to remove moisture contained in the fabric for the best exothermic process, or may include vacuum drying to completely remove other moisture.

According to the present invention, a nonwoven fabric having a heat generating function is obtained by mixing the synthetic fibers, the reconstituted fibers, and the natural fibers to form a web and nonwoven fabric thereof.

In addition, a nonwoven fabric having an exothermic function having an excellent hygroscopic exothermic function is obtained by treating the fiber fabric with a process of hydrolyzing and hydrophilizing an acrylic polymer that is responsible for the exothermic function contained in the nonwoven fabric including the hygroscopic exothermic acrylic fiber.

Fabrics produced by the manufacturing method of the present invention, which is given such a function, are optimally heated under conditions of 20 to 25 degrees Celsius, a relative humidity of 80% or more, which is a condition in which a constant humidity is maintained, and the functional paper, acupuncture paper, It can be applied as a cotton fabric, non-woven fabric, shoes, shoe insole laminating fabric, underwear, functional sportswear, cosmetic or cosmetic mask pack fabric, and keeps warmth by absorbing and absorbing heat generated by sweat and external water vapor generated in the human body.

1 is an infrared photograph of the hygroscopic fever phenomenon of the hygroscopic fever microfiber nonwoven fabric and the general microfiber fabric of the present invention,
2 is an infrared photograph for comparing the alkali, organic acid pretreatment fabric.

Hereinafter, embodiments of the present invention will be described.

Example  One

20% by weight of Mitsubishi Rayon's acrylic A-fiber (1.7de, 38mm) and 80% by weight of Tencel are carded, laminated with a cross wrapper, laminated at a basic weight of 55g / m ² , and imparted bonding strength between fibers through a spunlace process. (Example 1-1).

In addition, 20 wt% of Mitsubishi Rayon's acrylic A-fiber (1.7de, 38mm) and 80 wt% of cotton were carded, laminated at a basic weight of 55 g / m ² with a cross wrapper, and a nonwoven fabric was manufactured through a spunlace process. Example 1-2).

In addition, the air-laid nonwoven fabric was prepared with 75 g / m ² of basic weight mixed with 40 wt% of Mitsubishi Rayon acrylic A-fiber (1.7de, 4mm) and 60 wt% of PE / PP Bi-component fiber (1.2de, 4mm). (Example 1-3).

In addition, Huvis N (PA6) / P (Polyester) split type microfiber (3de, 51mm) was laminated with a base weight of 80g / m ² with a cross wrapper, and a nonwoven fabric was prepared through a spunlace process (Comparative Example 1-4). .

The nonwoven fabric thus prepared (Example 1-1) was dried in an oven at 100 ° C. for 2 hours and then stored in a vacuum bag. After 48 hours, the fever was photographed with an infrared (IR) camera at the Inha University Sports Life Science Center in a chamber with a relative humidity of 90% and a temperature of 20 ° C. together with a general microfiber sample (Comparative Example 1-4). The photographing results are shown in FIGS. 1 and 2.

In Figure 1, the left side is a hygroscopic fever nonwoven fabric containing 20% by weight of Mitsubishi Rayon acrylic A-fiber and 80% by weight of Tencel of the present invention (Example 1-1), and the right side is a general microfiber nonwoven fabric (Comparative Example 1-4 )to be. In Figure 2, the red graph (located above) is the temperature change of the heating nonwoven fabric (Example 1-1) of the present invention, and the light blue graph located at the bottom is the temperature change with respect to the general microfiber nonwoven fabric (Comparative Example 1-4). .

Example Fabric specification 1-1 Tencel 1.1de, 51mm 80%,
Hygroscopic heat generating yarn 1.7de, 38mm 20% blend fiber spunlace nonwoven fabric (basic weight: 55gsm) 1-2 31mm 80% cotton,
Hygroscopic heat generating yarn 1.7de, 38mm 20% blend fiber spunlace nonwoven fabric (basic weight: 55gsm) 1-3 Hygroscopic Acrylic Fiber 1.7de, 4mm 40%, PE / PP Bi-component Fiber 1.2de, 4mm 60% Blended Airlaid Nonwoven (Basic Weight 75gsm) 1-4 (Comparative Example) N / P Split Microfiber 3de 51mm 100% (Basic Weight: 80gsm)

Example  2

The phthalocyanine in the form of a solid powder is used to grind the particle size to about 0.3 ~ 1.0um in order to microbead the particle size before using it alone.In this embodiment, the solid powder iron to phthalocyanine (Sigma Aldrich Co., Ltd.) Product) was immersed in anhydrous sulfuric acid solution and heated to melt for 80 minutes at a high temperature of 140 ℃. The iron-phthalocyanine thus obtained was added to the sodium sulfate solution so that the iron-phthalocyanine salt was precipitated. 2% by weight of the precipitated iron to phthalocyanine salt (relative to the total weight of the solution) was dissolved in distilled water, and 2% by weight of the nonionic water-soluble acrylic binder (relative to the total weight of the solution) was dissolved therein to prepare the nonwoven fabric prepared in Example 1. After impregnation padding treatment and dried in an oven at 130 degrees to produce a hygroscopic heating fabric. The fabric thus prepared was dried in an oven at 100 ° C. for 2 hours for hygroscopic exothermic performance, and stored in a vacuum bag at room temperature of 20 ° C. After 48 hours, the exothermic process was measured in a chamber with a relative humidity of 90% and a temperature of 20 ° C. with a general microfiber sample.

Example Fabric specification Processing method Heating temperature Remarks 1 minute 3 minutes 10 minutes 2-1 Example 1-1 Untreated 31 32 27 2-2 Example 1-3 Untreated 30 33 27 2-3 Example 1-1 Iron-phthalocyanine Treatment 30 33 28 2-4 Example 1-3 Iron-phthalocyanine Treatment 30 34 28

As shown in Table 2, it can be seen that the processed fabric of the present invention has a higher heat generation temperature than the fabric that is not.

Example  3

The fabric prepared in Example 2 was dissolved in distilled water by dissolving 0.5-3 wt% citric acid and 0.5-3 wt% acetic acid to the total weight of the fabric and the total weight of the solution treated with NaOH 0.4 wt% concentration at 100 ° C. for 30 minutes. The fabric was treated for 30 minutes and then compared for performance and effect on hygroscopic exotherm. In fact, when the acidic refining agent was used, the exothermic effect was better than that of alkali refining. After drying for 2 hours in an oven at 100 ℃ for hygroscopic exothermic performance, put in a vacuum bag and stored at room temperature of 20 ℃. After 48 hours, the result of measuring the exothermic process in a chamber with a relative humidity of 90% and a temperature of 20 ° C. is shown in Table 3.

division Fabric specification Processing method Heating temperature Remarks 1 minute 3 minutes 10 minutes One Example 2-3 NaOH 1 wt% 30 min treatment 28 30 26 2 Example 2-3 1 wt% citric acid + 1 wt% acetic acid for 30 minutes 30 34 30 3 Example 2-1 NaOH 1 wt% 30 min treatment 29 30 26 4 Example 2-1 1 wt% citric acid + 1 wt% acetic acid for 30 minutes 30 33 28

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Claims (5)

Absorbing or hygroscopic exothermic acrylic fiber with 1.0 ~ 2.0de fineness and 30 ~ 55mm of fiber length, form a directional web through a carding process, and then laminating in one direction or in a random arrangement. Method of producing a nonwoven fabric having a heat generating function by the inter-fiber entanglement and entanglement by spun lacing method or needle punching method by laminating in m ² . Absorption or hygroscopic fever acrylic fiber with fineness 1.0 ~ 2.0de, fiber length 30 ~ 55mm and fineness 0.8 ~ 1.2de, short fiber 30 ~ 55mm, tencel short fiber, polyester short fiber, polyamide short fiber and fineness 1.0-2.0de, one or more short fibers selected from acryl short fibers having a fiber length of 30-55 mm are mixed and mixed in a weight ratio of 2: 8 to 5: 5 to form a directional web through a carding process, and then laminated in one direction. Method of manufacturing a non-woven fabric having a heat generating function by the inter-fiber entanglement and entanglement by the spunlace method or needle punching method by laminating in a random arrangement or by laminating in a basis weight 30 ~ 100g / m ² . Absorption or hygroscopic exothermic acrylic short fibers (short cut) with a fineness of 1.0 to 2.0de and a fiber length of 2 to 6mm and PP / PE bicomponent fibers having a fineness of 1.0 to 2.0de and a length of 2 to 6mm Forming an airlaid web in a weight ratio, a method of producing a non-woven fabric having a heat generating function by heat-sealing the PP / PE fibers with a hot air of 110 ~ 150 ℃ hot on the formed web. Claim 1 claim 1 to 5% by weight of the non-ionic water-soluble acrylic binder or urethane-based binder (to the total weight of the solution) in a solution in which sulfonated iron-phthalocyanine salt was dissolved in 1 to 5% by weight of the total weight of the solution in distilled water, claim 1 Method for producing a nonwoven fabric having a heating function, characterized in that the impregnated padding treatment of the nonwoven fabric prepared by any one of to 3, and dried in a dryer of 110 ~ 150 ℃. Claims 1 to 3 during the refining and dyeing process of the nonwoven fabric prepared in any one of the refining process is a solution of 0.5 to 3 wt% citric acid and 0.5 to 3 wt% of acetic acid in distilled water to the total weight of the solution Refining in a solution, during the dyeing process using a citric acid or acetic acid to maintain a pH of 3 to 4 to produce a non-woven fabric having a heating function characterized in that the dyeing.

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