KR101316140B1 - Method of making fabric made of polyurethane providing heat and the fabric made by the method - Google Patents

Abstract

PURPOSE: A manufacture method of heat generation fabric of a polyurethane material and heat generation fabric manufactured thereby are provided to contribute a moisture-absorbing and heat generating effect of by absorbing more sweat by using a polyurethane component since polyester yarn has bad moisture-absorbing ability. CONSTITUTION: A manufacture method of heat generation fabric of a polyurethane material comprises following steps. A step of mixing a raw material to prepare each of polyester yarn and urethane yarn comprises reacting polyisocyanate with a compound having at least two hydrogen atoms that reacts with isocyanate to prepare the polyester yarn. The compound having at least two hydrogen atoms that reacts with isocyanate uses amine as a catalyst and comprises at least one polyether alcohol having a functional group of 2 to 8 mgKOH/g and a hydroxyl group of 200 to 600 mgKOH/g obtained by adding alkylene oxide to a compound having at least two hydrogen atoms that reacts with alkylene oxide. [Reference numerals] (AA,NN) Humidity 10%; (BB,OO) Humidity 33%; (CC,PP) Humidity 53%; (DD,QQ) Humidity 73%; (EE,RR) Humidity 99%; (FF,JJ) Sample A (self heating fabric); (GG,KK) Sample B; (HH,LL) Sample C; (II,MM) Sample D

Description

Method for manufacturing exothermic fabric of polyurethane material and exothermic fabric produced by the present invention {METHOD OF MAKING FABRIC MADE OF POLYURETHANE PROVIDING HEAT AND THE FABRIC MADE BY THE METHOD}

The present invention relates to a method for producing a heat generating fabric and a heat generating fabric produced thereby, and more particularly, to a method for producing a heat generating fabric of polyurethane material and a heat generating fabric produced thereby.

Recently, a lot of heat generating underwear using a polyurethane component has begun to be used. The inside of the exothermic heat containing the polyurethane component has the effect of keeping the body warm by the hygroscopic heat generation function of the polyurethane component.

Urethane Bond is the reaction heat of alcohol containing active hydroxyl group (-OH) and isocyanate containing lsocyanatc group (-N = C = O) by addition polymerization reaction (Addition Polycmrization Reaction). It is formed while generating.

Isocyanates having at least one isocyanate group (NCO Group) and alcohols having at least one hydroxyl group (-OH) are called polyfunctional groups and the functional group dissipates high-temperature heat under appropriate conditions, while <-NHCOO- It produces a compound having a structure of> urethane bond (Uolyurethanc), and more than 1000 molecules are bonded to a polyurethane (polyurethane).

The underwear containing such a polyurethane component absorbs the sweat secreted by the body, and the steam component is combined with the polyurethane component to generate heat at an appropriate body temperature. The body is kept warm by being insulated by the air layer formed on the fabric. Due to the fabric of the poly component, the elasticity is good and thin, and has been favored a lot.

1 is a performance test table and a performance test graph of the exothermic fabric and the general fabric of the polyurethane material.

As shown in Figure 1, the heat generating fabric of the polyurethane material indicates that the heat generation value (temperature) is significantly increased compared to the general fabric such as cotton material as the humidity of the heat generating fabric (sample). In other words, the more sweat, the higher the fever. However, in normal fabrics, no temperature difference occurs despite the difference in humidity.

By the way, there is no question about the hygroscopic heat generation principle of the polyurethane component, but how much hygroscopic heat generation effect is actually consumers do not feel much about the exothermic effect. That is, consumers may feel the effect of thermal insulation, but do not feel much of the actual heating effect by the polyurethane component. In other words, the principle has been proven, but the effect is insignificant.

On the other hand, the inside of the exothermic heat is not only composed of the polyurethane component, but also may be knitted and configured like cotton, or may be knitted with other poly components. However, the hygroscopic fever efficacy of clothes depends on such ingredients or ingredient ratios.

In the polyurethane market, which is still in the initial market stage, development of a fabric capable of maximizing the hygroscopic heat generation efficiency and the verification of the test are required.

An object of the present invention is to provide a method for producing a heat generating fabric of polyurethane material.

Another object of the present invention is to provide a heat generating fabric produced by a heat generating fabric manufacturing method of polyurethane material.

Exothermic fabric production method of the polyurethane material according to the object of the present invention described above, the steps of mixing the raw materials to produce a polyester yarn and a urethane yarn, respectively; Producing each of the polyester yarn and the urethane yarn by the mixed raw materials; Manufacturing the exothermic fabric by knitting the produced polyester yarn and urethane yarn in a ratio of 87 to 13; Dyeing the produced heating fabric; It can be configured to include the step of rolling the dyed heating fabric.

Here, the step of mixing and reacting the raw materials to prepare the polyester yarn and the urethane yarn, respectively, reacting a compound having two or more hydrogen atoms reacting with the polyisocyanate and isocyanate groups to produce the polyester yarn It can be configured to.

And the compound having two or more hydrogen atoms reacting with the isocyanate group has a functionality of 2-8 obtained by the addition of alkylene oxide on the compound having two or more hydrogen atoms reacting with the alkylene oxide using an amine as a catalyst. And at least one polyether alcohol having a hydroxyl number of 200-600 mgKOH / g.

On the other hand, the compound having two or more hydrogen atoms reacted with the alkylene oxide used to prepare the polyether alcohol may be configured to include one or more compounds that are solid at room temperature.

The exothermic fabric produced by the exothermic fabric manufacturing method of the polyurethane material according to another object of the present invention, the step of mixing the raw materials to react to produce a polyester yarn and a urethane yarn; Producing each of the polyester yarn and the urethane yarn by the mixed raw materials; Manufacturing the exothermic fabric by knitting the produced polyester yarn and urethane yarn in a ratio of 87 to 13; Dyeing the produced heating fabric; It can be configured to be manufactured by the step of rolling the dyed exothermic fabric.

Here, the step of mixing and reacting the raw materials to prepare the polyester yarn and the urethane yarn, respectively, reacting a compound having two or more hydrogen atoms reacting with the polyisocyanate and isocyanate groups to produce the polyester yarn It can be configured to.

And the compound having two or more hydrogen atoms reacting with the isocyanate group has a functionality of 2-8 obtained by the addition of alkylene oxide on the compound having two or more hydrogen atoms reacting with the alkylene oxide using an amine as a catalyst. And at least one polyether alcohol having a hydroxyl number of 200-600 mgKOH / g.

And compounds having two or more hydrogen atoms that react with the alkylene oxides used to prepare the polyether alcohols may be configured to include one or more compounds that are solid at room temperature.

In this case, the heat generating fabric of the polyurethane material may be used for the endothelial of the winter gloves.

According to the method of manufacturing a heat-generating fabric of the polyurethane material as described above and the heat-generating fabric of the polyurethane material produced by this, by producing a fabric by knitting polyester yarn and polyurethane yarn in the optimum ratio of 87% and 13%, respectively , The effect of maximizing the hygroscopic heating effect of the fabric. In particular, since the polyester yarn is inferior in hygroscopicity, there is an effect of helping to absorb more heat by absorbing sweat by the polyurethane component.

1 is a performance test table and a performance test graph of the exothermic fabric and the general fabric of the polyurethane material.
Figure 2 is a flow chart of a method for producing a heating fabric of the polyurethane material according to an embodiment of the present invention.
3 is a performance test table and a performance test graph of the exothermic fabric of the polyurethane material and the exothermic fabric of the conventional polyurethane material according to an embodiment of the present invention.
4a to 4e are actual test pictures showing the performance test process for the exothermic fabric of the polyurethane material.
5 is a test score report of the tester for clothing heat of the polyurethane material according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or &lt; / RTI &gt; includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a flow chart of a method for producing a heating fabric of the polyurethane material according to an embodiment of the present invention.

Referring to FIG. 2, first, a predetermined raw material is mixed and reacted to prepare a polyester yarn and a urethane yarn, respectively (S101).

In the present invention, polyurethanes are prepared using polyol components comprising at least one polyether alcohol obtainable using amines as catalysts.

At this time, in order to produce a polyester yarn, it is preferable that it is comprised so that the compound which has two or more hydrogen atoms which react with a polyisocyanate group and an isocyanate group may react.

Here, a compound having two or more hydrogen atoms reacting with an isocyanate group is obtained by addition of an alkylene oxide on a compound having two or more hydrogen atoms reacting with an alkylene oxide using an amine as a catalyst. And one or more polyether alcohols having a functionality and a hydroxyl number of 200-600 mgKOH / g.

Such polyether alcohols may be used in amounts of 10-90% by weight based on the weight.

And compounds having two or more hydrogen atoms that react with the alkylene oxides used to prepare the polyether alcohols may be configured to include one or more compounds that are solid at room temperature.

Such compounds include trimethylolpropane, pentaerythritol, glucose, sorbitol, mannitol and sucrose, polyhydric phenols, resols, for example oligomer condensation products of phenol and formaldehyde, oligomer condensation products of aniline and formaldehyde (MDA), toluene It is preferably selected from the group consisting of diamines (TDA) and Mannich condensates of phenol, formaldehyde and dialkanolamines, and also mixtures of melamine and also two or more of the alcohols listed.

Next, a polyester yarn and a urethane yarn are produced by the mixed raw materials (S102). Each yarn may be produced according to a general yarn manufacturing process.

Next, the polyester yarn and the urethane yarn produced in advance by knitting in a ratio of 87% by weight to 13% by weight to produce a heat generating fabric (S103).

Conventionally, the mixing ratio of the non-urethane yarn and the urethane yarn is not clearly disclosed, and the components thereof may also be mixed with cotton yarn. In the present invention, it is configured to produce a heat-generating fabric by knitting polyester yarn in a ratio of 87% by weight and a urethane yarn in a proportion of 13% by weight without any component of cotton yarn.

Polyester yarns have very poor hygroscopicity, so they do not absorb sweat well, and most of the sweat is absorbed from urethane yarns. Thus, the hygroscopic heat generation of the urethane yarn is relatively promoted.

On the other hand, other types of poly yarns such as polypropylene may be used instead of polyester yarns, and the ratio of 87% to 13% may be configured to remain intact.

However, in the case of polypropylene, there is a characteristic that dyeing is not well, and bleaching is strong, it is preferable to be used to make a white product.

Polypropylene does not change its strength even when wet, and can be used in various fashion products such as sportswear, outdoor clothing, and swimsuits because it is resistant to strong acids or strong alkalis.

Next, dyeing the heat-producing fabric prepared before (S104).

Next, the dyed heating fabric is rolled (S105).

Exothermic fabric produced by such a manufacturing method is maximized hygroscopic heating effect, it can be utilized in various products. In particular, it is excellent in elasticity because it is not included cotton yarns can be utilized in a variety of products other than underwear. In particular, when used in the inner skin of the winter gloves, in spite of the various movements of the hand can feel a good fit, there is an advantage that warm even if sweat on the hand.

3a to 3b are actual test pictures showing the performance test process for the exothermic fabric of the polyurethane material.

3A to 3E are photographs of the actual test procedure for measuring the temperature of the heating fabric while maintaining the humidity of the heating fabric at 10%, 34%, 54%, 73%, and 99%, respectively.

In this case, Sample A is composed of 87% polyester yarn vs. 13% urethane yarn according to the present invention, Sample B is 85% non-urethane yarn 15% urethane yarn, Sample C is 86% non-urethane yarn 14% urethane yarn , Sample D is composed of 88% non-urethane yarn and 12% urethane yarn. The urethane yarn component of each sample is configured to have a small difference of about 1-3%.

4 is a performance test table and a performance test graph of the exothermic fabric of the polyurethane material and the exothermic fabric of the conventional polyurethane material according to an embodiment of the present invention.

According to FIG. 4, the result is shown through a performance test as shown in FIGS. 3A to 3B.

At this time, as the humidity of each sample increases, it can be seen that the difference in exothermic temperature between sample A and other samples B to D of the present invention becomes larger. Although the ratio difference of urethane yarn is 1-3%, it turns out that the difference of exothermic temperature is very big.

5 is a test score report of the tester for clothing heat of the polyurethane material according to an embodiment of the present invention.

5 demonstrates that the test results of FIG. 4 were produced according to the performance test of FIGS. 3A-3E.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

Claims (4)

Mixing and reacting the raw materials to produce polyester yarns and urethane yarns, respectively;
Producing each of the polyester yarn and the urethane yarn by the mixed raw materials;
Preparing the exothermic fabric by knitting the resultant polyester yarn and urethane yarn in a ratio of 87% by weight to 13% by weight;
Dyeing the produced heating fabric;
Rolling the dyed exothermic fabric,
The step of mixing and reacting the raw materials to prepare the polyester yarn and urethane yarn, respectively,
To prepare the polyester yarn, a compound having at least two hydrogen atoms reacting with the polyisocyanate and isocyanate groups is reacted,
The compound having two or more hydrogen atoms reacting with the isocyanate group has a functionality of 2-8 obtained by the addition of alkylene oxide on the compound having two or more hydrogen atoms reacting with the alkylene oxide using an amine as a catalyst. And at least one polyether alcohol having a hydroxyl value of 200-600 mgKOH / g. The compound of claim 1, wherein the compound having at least two hydrogen atoms reacted with an alkylene oxide used to prepare the polyether alcohol,
A method for producing a exothermic fabric of polyurethane, characterized in that it comprises at least one compound which is solid at room temperature. Mixing and reacting the raw materials to produce polyester yarns and urethane yarns, respectively;
Producing each of the polyester yarn and the urethane yarn by the mixed raw materials;
Preparing the exothermic fabric by knitting the resultant polyester yarn and urethane yarn in a ratio of 87% by weight to 13% by weight;
Dyeing the produced heating fabric;
Manufactured by rolling the dyed exothermic fabric,
The step of mixing and reacting the raw materials to prepare the polyester yarn and urethane yarn, respectively,
To prepare the polyester yarn, a compound having at least two hydrogen atoms reacting with the polyisocyanate and isocyanate groups is reacted,
The compound having two or more hydrogen atoms reacting with the isocyanate group has a functionality of 2-8 obtained by the addition of alkylene oxide on the compound having two or more hydrogen atoms reacting with the alkylene oxide using an amine as a catalyst. And at least one polyether alcohol having a hydroxyl number of 200-600 mgKOH / g,
Compounds having two or more hydrogen atoms reacted with alkylene oxides used to prepare the polyether alcohols,
An exothermic fabric made of polyurethane, characterized in that it comprises at least one compound that is solid at room temperature. The method of claim 3, wherein the heat generating fabric of the polyurethane material,
A heat-generating fabric made of polyurethane, characterized in that it is used for the inner skin of winter gloves.

Images