WO2004088016A1

WO2004088016A1 - Fiber materials having improved qualities required for clothes and method of improving the same

Info

Publication number: WO2004088016A1
Application number: PCT/JP2003/004069
Authority: WO
Inventors: Yusuke Hirota; Hiroo Makimura
Original assignee: Yusuke Hirota; Hiroo Makimura
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2004-10-14
Also published as: EP1609895A1; JPWO2004088016A1; US20060137319A1; AU2003221007A1; JP3858229B2; CN1735720A

Abstract

It is intended to provide fiber materials (for example, yarns, knitted goods and woven goods) which sustain the texture characteristic to a natural fiber such as silk, are effectively prevented from yellowing due to light or sweat with the passage of time, less contaminated with a residual toxic gas and effectively prevented from worsening in the warm retention properties and strength with the passage of time and yet can be produced at a lower cost. More specifically speaking, a fiber material having improved qualities required for clothes which is obtained by bringing a chemical fiber containing 0.01 to 5.0% by weight of titanium oxide with a natural fiber.

Description

Textile material having improved coating quality requirements and method for its improvement

The present invention is characterized in that the quality required for clothing is improved while having the texture unique to natural fibers.

Fiber material and its improvement method. More specifically, a fiber material comprising a titanium oxide-containing chemical fiber and a natural fiber, such as a yarn, a woven or woven fabric comprising the yarn force,

Related. Background art

Underwear, outerwear, knitted or woven products such as socks mainly made of natural fibers such as silk are good in terms of feel such as touch and appearance, but on the other hand, yellowing due to the influence of light It also has the disadvantage of being prone to yellowing due to the effects of sweat. For this reason, various attempts have been made to overcome such drawbacks. For example, Japanese Patent Laid-Open Publication No. Hei 6-14939 discloses a raw silk or silk from the group consisting of deoxycytidylic acid and picicydolic acid in order to produce silk and silk which are resistant to yellowing when exposed to sunlight and ultraviolet light. Disclosed is a method of preventing yellowing of silk and silk characterized by containing a selected compound. In addition, as another technique, Japanese Patent Application Laid-Open No. 2001-172835 is a light resistance characterized in that it is spun by combining a man-made fiber containing a far-infrared ray emitting material and a silk fiber. A yarn and a light resistant fiber product using the light resistant yarn as part of a material are disclosed. Furthermore, WO 9 5 5 5 3 2 discloses a titanium oxide-containing silk fiber whose surface is laminated with titanium oxide, and the silk fiber is degraded or yellowed by the photocatalytic action of titanium oxide. It is stated that there is no.

However, the inventions described in these publications still have problems to be solved as described below. Including UV absorbers such as deoxycytidylic acid and cytidylic acid in the silk itself as disclosed in Japanese Patent Application Laid-Open No. 6-143739 improves the light resistance of the silk and causes yellowing. Although it may be prevented, the quality of the silk may be deteriorated on the contrary, and the touch of the silk may be impaired. Also, In the patent application publication No. 2 0 1 1 7 2 3 5 5 5 5 5, the far-infrared radiation material is relatively difficult and expensive to obtain, and therefore the fiber product containing it has a high production cost, and Problems remain in terms of generalization. Furthermore, in WO 9 8/5 3 1 2 3, titanium oxide stuck on the surface of silk fiber falls off relatively easily due to the influence of sweat and the contact with the body, and yellowing suppression effect May not be suitable for use as a material for products that come in direct contact with the skin, such as underwear and socks. Furthermore, since titanium oxide is stuck on the surface of the silk fiber, there is also a possibility that the feel such as texture and appearance unique to silk fiber may be lost by the titanium oxide on the surface. Furthermore, when processed into clothes based on these conventional natural fibers, the clothes made are not required to be worn, and the quality required as clothes in terms of heat retention, strength, etc. is satisfied to some extent However, as the clothes are worn repeatedly, the above-mentioned required quality of clothes gradually declines or is lost due to the influence of heat, light, moisture, weather and the like. For example, it is common to see that odors such as ammonia smell discolorate while wearing clothes and do not disappear easily after washing etc. Especially, substances that cause house sickness, such as horumaldehyde, change over time Adhering to and remaining on the clothing will cause more pain for the patient with the disease. Therefore, in order to improve the commercial value as a garment and the product life, it is necessary and desirable to improve the required coating quality of the fiber material used therein.

The present invention has been made to meet such requirements, and yellowing due to light and yellowing due to sweat are effectively prevented over time, without impairing the unique feeling of natural fibers such as silk, and toxic gas A fibrous material which can be produced with low adhesion, which can be effectively prevented from lowering its heat retention and strength with the passage of time, as well as at a lower production cost, such as yarn, knit or textile products. Intended to be provided. Disclosure of the invention

That is, the present invention relates to a fiber material comprising a chemical fiber containing titanium oxide and a natural fiber, wherein the two fibers are in contact with each other and have an improved coating quality.

Among them, a preferred embodiment is that the fiber material is a chemical fiber containing titanium oxide and The invention relates to a fiber material having an improved coating requirement quality which is a yarn produced from natural fibers.

Further, the present invention is characterized in that the fiber material is a composite yarn produced by winding a sheath yarn consisting of natural fibers around the outer surface of a core yarn consisting of chemical fibers containing titanium oxide. The present invention relates to a fiber material having the required coating quality.

Another aspect of the present invention relates to a fiber material having an improved coating requirement quality, characterized in that the composite yarn is wound around the core yarn with the core yarn not substantially exposed. .

In addition, the fiber material relates to a fiber material having an improved coating requirement quality, which is a yarn obtained by twisting a yarn made of chemical fibers containing titanium oxide and a yarn made of natural fibers.

The present invention is also improved that the fiber material is a woven or knitted fabric woven using the aforementioned yarn, the aforementioned composite yarn or the aforementioned yarn in at least a part of the yarn constituting the cloth. It also relates to a textile material having the required coating quality.

In a preferred embodiment of the present invention, the fiber material uses a yarn comprising a chemical fiber containing titanium oxide for the warp and / or weft of the intermediate material of the woven fabric, wherein the intermediate material is a natural fiber from above and below The present invention relates to a fiber material having an improved coating quality required, which is a woven fabric made by weaving a yarn comprising the yarn to cover and hide the intermediate material.

In another aspect of the present invention, the fiber material is woven using a fabric woven using a yarn of chemical fibers containing titanium oxide, and a yarn of natural fibers lap-bonded on both the upper and lower sides thereof. The invention also relates to a textile material having an improved coating requirement quality, which is a sandwich structure fabric consisting of two or more fabrics.

A preferred embodiment of the present invention is a fiber material having the above-mentioned improved coating requirements, wherein the chemical fiber contains 0.01 to 5.0% by weight of titanium oxide based on the total weight of the fiber. About.

The invention relates, inter alia, to a fiber material having the aforementioned improved coating quality requirements, wherein said natural fibers are silk. .

Further, according to the present invention, the chemical fiber is a polyester fiber, a polyamide fiber (Nydon fiber), a polypropylene fiber, a polyethylene fiber, a polypromic fiber. At least one type of fiber selected from the group consisting of fibers, synthetic fibers such as polychloral fibers, regenerated fibers such as viscose fibers, copper ammonia rayon, and semi-synthetic fibers such as acetate fibers; It relates to textile materials having the required coating quality.

Another aspect of the present invention is to provide a coating material according to the present invention, which comprises forming a fiber material from a chemical fiber containing titanium oxide and a natural fiber such that the two fibers are in contact with each other. It also relates to how to improve Brief description of the drawings

FIG. 1 is a view showing a yarn of the present invention made from titanium oxide-containing chemical fibers and natural fibers. FIG. 2 is a view showing a composite yarn of the present invention which is produced by winding a sheath yarn consisting of natural fibers around the outer surface of a core yarn consisting of chemical fibers containing titanium oxide. FIG. 3 is a view showing a twisted yarn of the present invention, which is made by twisting together a yarn made of chemical fibers containing titanium oxide and a yarn made of natural fibers. FIG. 4 is a drawing showing a plain weave woven fabric of the present invention, which is one embodiment of a fiber material having improved coating quality requirements. FIG. 5 shows that a yarn made of chemical fiber containing titanium oxide is used as a warp of a woven fabric intermediate material, and a yarn made of silk fiber from above and below the intermediate material covers the intermediate material. FIG. 1 is a view showing an aspect of the woven fabric of the present invention made by weaving. FIG. 6 shows an embodiment of a fabric comprising a fabric woven using yarns of chemical fibers containing titanium oxide, and a fabric woven using yarns of silk fibers laminated on the upper side thereof. FIG. Fig. 7 shows a sandwich structure consisting of a fabric woven with yarns of chemical fibers containing titanium oxide, and a fabric woven with yarns of silk fibers, laminated on both the upper and lower sides of the fabric. It is a figure which shows the one aspect | mode of cloth. BEST MODE FOR CARRYING OUT THE INVENTION

In the present invention, the required coating quality is required in outer clothing made of fiber materials such as yarn, clothing such as underwear, socks, etc., and should be able to retain the quality, for example yellowing, yellowing hardly occurs with time. In addition, there is no residue of harmful substances that cause adsorbed odorous odors, it has physical properties such as required strength and elasticity, and breakage occurs. It refers to qualities such as being excellent in heat retention, being excellent in stretchability, being easy to conform to body shape and movement of the body, and having good breathability.

In order to obtain the fiber material of the present invention which has the texture unique to natural fibers and the above-mentioned coating quality is better improved, it is necessary to use chemical fibers and natural fibers containing titanium oxide. However, it is sufficient to make these fibers in contact with each other. As one embodiment, as shown in FIG. 1, there are yarns 3 made of chemical fibers 1 and natural fibers 2 containing a plurality of titanium oxides, preferably silk. The yarn 3 has a form in which chemical fibers 1 and natural fibers 2 having different lengths are substantially uniformly present and in contact with each other, and therefore yellowing due to light or sweating over time is also possible. Yellowing is effectively prevented, toxic gas residue is low, heat retention and strength decrease with time are also effectively prevented, and the yarn 3 as a whole has a characteristic feel of natural fibers 2 It has become. The chemical fiber 1 and the natural fiber 2 can be spun at the desired ratio within the range that the improved coating quality of the constituted yarn 3 is maintained, and the characteristic characteristic of the natural fiber 2 is not significantly impaired. it can.

A more preferred embodiment of the fiber material of the present invention is a composite yarn obtained by winding a sheath yarn 5 consisting of natural fibers on the outer surface of a core yarn 4 consisting of chemical fibers containing titanium oxide as shown in FIG. It is. The composite yarn 6 not only has an improved coating quality but also has a natural texture because the core yarn 4 is in contact with the sheath yarn 5 and the surface is completely covered. It has a yarn as close as possible to that of the sheath yarn 5 consisting of fibers, which is a very preferable embodiment. Moreover, as for the composite yarn 6, the sheath yarn 5 may be wound around the core yarn 4 in a state in which the core yarn 4 is not substantially exposed. For example, the composite yarn 6 may be a sheath yarn in a state in which the core yarn 4 is not exposed. Even in the embodiment in which 5 is wound, and within the range in which the characteristic feeling of the sheath yarn 5 consisting of natural fibers is not significantly impaired, the sheath yarn 5 is wound with the core yarn 4 exposed. It may be an attached aspect. The state in which the core yarn is not substantially exposed includes not only the state in which the core yarn is completely exposed, but also the state in which the core yarn is exposed in a part or plural portions of the composite yarn.

Moreover, as a fiber material of the present invention which is a yarn, a yarn made by twisting a yarn consisting of chemical fibers containing titanium oxide and a yarn consisting of natural fibers is also mentioned. Be For example, as shown in FIG. 3, the yarn 7 consisting of nylon fibers containing titanium oxide and the yarn 8 consisting of silk fibers come into contact with each other by being twisted together, and thus the prepared yarn is an improved clothing. It has the required quality, and a feel close to that of the natural fibers used.

The fiber material that is the yarn of the present invention described above is an embodiment in which the chemical fiber containing titanium oxide and the natural fiber are each composed of a single kind of each, for example, a combination of a naiton fiber containing titanium oxide and silk In addition, it may be an embodiment composed of plural kinds according to need, for example, a combination of a titanium fiber containing naic fiber and a polyester fiber and silk. Also, even if, for example, the composite yarn or burning yarn of the present invention is used as a sheath yarn or core yarn to make another composite yarn, the composite yarn or yarn of the present invention is used to make another twisted yarn. It is good.

Another aspect of the fiber material having the improved coating quality according to the present invention is a yarn produced by using titanium oxide-containing chemical fiber and natural fiber in at least a part of the yarn constituting the fabric. A woven fabric woven using composite yarns or twisted yarns (hereinafter, referred to as titanium oxide-containing yarns in the present specification) or a knitted fabric knitted using these titanium oxide-containing yarns. The woven fabric is obtained, as an example, as shown in FIG. 4 by using plain titanium yarn containing yarns of titanium oxide as warps 10 and Z or weft yarns 1 and crossing each other one by one (woven fabric 1 2). Here, in addition to titanium oxide-containing yarns, warp yarns 10 and weft yarns 1 1 can be used as long as the required coating quality of the produced woven fabric is improved and the feeling of natural fibers is not significantly impaired. Other types of yarn may be used. For example, other than a mode in which titanium oxide-containing yarns are used for all the warp yarns 10 and weft yarns 1, silk yarns are used for all warp yarns 10 and titanium oxide-containing yarns (twist yarns) are used for all weft yarns 1 1 Aspect, or use all inner yarns 10 titanium internal acid titanium-containing yarns in appropriate proportions, use the other remaining warp yarns with silk yarns, and all weft yarns 1 with silk yarns, oxidized The aspect etc. which use a titanium containing thread | yarn, or both a silk thread and a titanium oxide containing thread | yarn are mentioned. The woven fabric of the present invention may be woven in any manner, and may be obtained by plain weave, twill weave, satin weave, crest weave, rattan weave, lap weave, or woolen weave, and the like.

Further, in a preferred embodiment of the woven fabric according to the present invention, a yarn composed of chemical fibers containing titanium oxide is used for the warp and / or weft of the intermediate material of the woven fabric, It is a woven fabric made by weaving yarns consisting of natural fibers from one side and the other so as to cover the intermediate material. For example, as shown in FIG. 5, the woven fabric 13 has yarns 14 consisting of chemical fibers containing titanium oxide as warps of the intermediate material, and yarns 15 and 15 'consisting of natural fibers (silk fibers) It is made in contact to cover the warp 14 of the intermediate material from above and below. Therefore, the woven fabric 13 has an improved coating quality, while the texture such as feel and appearance on it is equivalent to that of a woven fabric made of a single natural fiber, in particular It is suitable as a material for products that come in direct contact with the skin, such as animals and socks. Also, the natural fibers 15 and 15 'may naturally be of the same type or of different types.

Also, the knitted fabric having the improved coating request quality according to the present invention may be knitted in any manner, for example, by hand knitting or machine knitting, flat knitting (dress knitting, temper knitting), rubber knitting (twill knitting), pearl Hen (Gata hen), Tuck hen, Float hen, One-sided hen, Double-sided hen, Lace hen, Bored-dye, Denby hen (Tricot hen), Bandayk (Atlas) hen, Pren cord hen, Second eye hen, Perelin The double denbi 1st edition, the double bandique edition, the milanis edition, the raschel edition, the fleece knitting or the jacquard knitting etc.

Another embodiment of the fiber material having the improved coating quality required by the present invention is a fabric 16 shown in FIG. 6, which is woven using a yarn of chemical fiber containing titanium oxide, and a top layer of the same. A cloth 18 consisting of a bonded cloth 17 woven with silk fiber yarn is mentioned. The cloth 18 is an embodiment in which the cloth 17 is sewn vertically and horizontally with a silk thread 19 on only the upper or lower side of the cloth 16 (dotted line in the figure) and bonded.

Another preferred embodiment of the fiber material of the present invention is a fabric 20 shown in FIG. 7, which is woven using a yarn of chemical fiber containing titanium oxide, and silk fibers which are layered and bonded on both upper and lower sides thereof. And a sandwich structure cloth 22 consisting of a cloth 21 woven with the yarn of The structural fabric 22 is a sandwich structure fabric because the fabric 21 and 21 are in contact with the fabric 20 in a form in which the fabric 20 is sandwiched between the fabric 21 and the fabric 21 in a sandwich shape. All in all, not only has the improved coating quality required, but the texture, eyes and so on feel is equivalent to that of cloth 21. In FIG. 7, cloths 20 and 21 are sewn vertically and horizontally by silk thread 19 (broken lines in the figure) and bonded, but needless to say, threads other than silk may be used, or Other bonding means may be selected as appropriate. The form of titanium oxide which can be used in the present invention and which can improve the coating quality required of the fiber material is preferably in the form of powder, and its average particle size is preferably 0.5 m or less. When the particle size exceeds 0.5 _M m, the yarn made of chemical fiber containing the titanium oxide is easily cut. Also, titanium oxide is generally contained in the chemical fiber in an amount of 0.01 to 5.0% by weight based on the total weight of the fiber. If it is less than 0.01% by weight, the required coating quality of the constructed fiber material is not effectively improved. If the content exceeds 5.0% by weight, the required coating quality of the fiber material is not further improved, and furthermore, yarn breakage in chemical fiber spinning and stretching steps is likely to occur, and a spinning machine, a knitting machine or This is not preferable because it increases the possibility of frictional damage to the rollers and guides of the weaving machine. The titanium oxide content is 0.1 to 1.0 weight based on the total weight of the fiber, considering the balance between the improvement of the effect of improving the coating quality requirement of the fiber material and the prevention of the above-mentioned thread cutting. % Is preferred. The chemical fiber containing such titanium oxide is melted, for example, as a raw material of the raw material by wet spinning, dry spinning or melt spinning, as appropriate, and then directly mixed with titanium oxide and then spun. It can be manufactured.

Natural fibers suitably used in the present invention include, for example, silk, cotton, animal hair (wool, strength shimmer, vicuna, alpaca, angora, moher, camel, etc.), hemp, paper, etc. Examples of such fibers include synthetic fibers such as polyester fibers, polyamide fibers (narrow fibers), polypropylene fibers, polyethylene fibers, polypromix fibers, and polychlor fibers, and viscose fibers and regenerated fibers such as copper ammonia rayon. And semi-synthetic fibers such as acetate fibers.

As described above, the fiber material having the improved coating quality required by the present invention comprises a titanium oxide-containing chemical fiber and a natural fiber, and, for example, a yarn or a knit or fabric made from the yarn is used. It can be mentioned. Even though natural fibers are used, since these natural fibers are in a form in which natural fibers are in constant contact with chemical fibers containing titanium oxide, yellowing due to light or sweating over time is also possible. Yellowing can be effectively prevented. In addition, the sustained release of toxic gases over a long period is also excellent, and even if gases that emit offensive odor or gases that are harmful to the human body are adsorbed, for example, the environment where such gases do not exist In the case, the adsorbed gas It is sustained release at a very high rate. Therefore, it is possible to effectively avoid the state in which the harmful gas which causes odor and house sickness is always adsorbed to the clothes. Furthermore, the fabric made of the fiber material of the present invention is more excellent in heat retention than a fabric consisting only of silk fibers even after long-term use, and is also more excellent in sustainability in strength. Therefore, it is also possible to produce clothes that are thinner and lighter than conventional products, but do not change in heat retention and strength. In addition, the fiber material of the present invention has characteristics such as appearance and texture that are very similar to fiber materials consisting of only natural fibers. Not only in terms of production, but also because titanium oxide is inexpensive and easily available, and titanium oxide can be easily incorporated into chemical fibers, the production cost of the fiber material can be suppressed, and the aspect of productivity can be achieved. But it also has the advantage of being advantageous.

Hereinafter, the present invention will be described more specifically by test examples, but the present invention is not limited thereby.

(Test Example 1) Yellowing and yellowing test

The degree of yellowing and yellowing due to light or sweat of the woven fabric which is the fiber material of the present invention was compared with the degree of yellowing and yellowing due to light or sweat of a woven fabric consisting only of natural fibers.

Sample A: Add 100 wt% of molten nylon-6 polymer, add 1.0 wt% of titanium oxide (average particle diameter: 0.1 μm), mix until uniform, and spin this melt solution The resultant was spun through a machine to obtain a yarn containing titanium oxide. Then, a yarn containing this titanium oxide was used as a core yarn, and a composite yarn obtained by winding a silk yarn as a sheath yarn was used for plain weave, to obtain Sample A which is a woven fabric of the present invention.

Sample B: A yarn containing titanium oxide obtained by the same method as in Example 1 is used for warp 10 shown in FIG. 4 and a similar silk yarn used in Example 1 is used for weft 11 shown in FIG. By plain weave, sample B which is a woven fabric of the present invention shown in FIG. 4 was obtained.

Sample c: The same operation as in Example 1 was carried out except that a wool yarn consisting of wool was used as a sheath yarn, to obtain a sample C which is a woven fabric of the present invention.

Sample D: The same operation as in Example 1 was carried out except using a cotton thread made of cotton as a sheath yarn, to obtain a sample D which is a woven fabric of the present invention.

Sample E: The same silk yarn used in Example 1 is plain woven to obtain sample E which is a woven fabric. The

Sample F: To 100% by weight of melted nylon-6 polymer, add 0.005% by weight of titanium oxide (average particle diameter: 0.5 μπι), mix until uniform, and pass this melt through a spinning machine The yarn was spun to obtain a yarn containing titanium oxide. Then, a yarn containing this titanium oxide was used as a core yarn, and a composite yarn obtained by winding a silk yarn as a sheath yarn was used for plain weave, to obtain a sample F which is a woven fabric.

Comparative Example: 8.0 wt.% To 100 wt.% Melted nylon-16 polymer. /. The titanium oxide (average particle size: 0. Ιμπι) was added and mixed until uniform, and this melt was spun through a spinning machine. However, yarn breakage occurred frequently in the spinning step and the subsequent drawing step, and it was stopped because it was difficult to obtain a yarn of the desired thickness.

Dyeing fastness tests were conducted on the obtained samples A, B, C, D, E and F. As described below, the light resistance test was conducted according to J I S L 0842 (Carbon fork light test), and the perspiration resistance test (acid and Al-water) was conducted according to J I S L 0848.

Method of J I S L 0842 (Carbon arc light test)

Samples A, B, C, D, E or F and a pull-one scale were respectively sandwiched by cardboards and attached to the sample holder of the carbon arc type light fastness tester. Next, the test piece holder was attached to the test piece rotation rack without a gap, and exposure was performed according to 6. (1) (first exposure method) of J I S L 0841. The determination was made in accordance with 9. (Determination of staining fastness) of J I S L 0 801.

J I S L 0848 (sweat resistance test) method

Cut samples A, B, C, D, E or F into pieces of 100 × 4 Omm each, and hold them between the two attached white cloths specified in JIS L 0803 of the same size, 2 Each side was sewn together to prepare composite test pieces. Next, each of the composite test pieces was pressed into two beakers, each of which contained an acid artificial sweat and an artificial sweat, and was moved to allow the test solution to permeate uniformly. Then, the test solution was poured out, and the composite test piece was sandwiched between two glass rods, and excess test solution was dripped or dropped to a certain extent. Hold the composite test piece between two glass plates, It was attached to a sweat tester and a pressure of 125 kPa was applied. Subsequently, the perspiration tester with the composite test piece mounted in the vertical position was placed in a dryer at 37 ± 2 ° C. and held for 4 hours. After that, the composite test piece was removed from the sweat tester, and the test piece and two attached white cloths were separated and dried at 60 ° C. or lower. Judgment of color change of the test piece is JISL 0 8 0 1 9.

(Determination of staining fastness) The results are shown in Table 1. table 1

As can be seen from the results in Table 1, the samples E and F, which were both the light resistance test and the sweat resistance test, respectively, remained in the 2-3 grade and the 3 grade, but the sample which is the woven fabric of the present invention All of A, B, C and D gave good results of grade 4 or higher. That is, samples A, B, C and D consisting of naic yarn and silk yarn, wool or cotton yarn containing titanium oxide in the amount specified in the present invention are affected by yellowing and sweat caused by light. It is understood that yellowing is very effectively suppressed. In addition, although samples A, B, C, and D also use nylon yarn which is a chemical fiber, they have a texture such as appearance, feel, etc. with a single cloth of silk yarn, wool yarn or cotton yarn. It was equal.

(Test Example 2) Adsorbability of toxic gas and sustained release test

Changes in adsorption and retention characteristics of toxic gas of the textile material of the present invention over time were compared with those of the textile composed of only silk fibers.

Test sample

Sample a: 70% of the total yarn made of silk and titanium oxide containing nylon fibers A fabric in which the fabric of the fiber material of the present invention circularly knitted using 30% of the total yarn is used after repeated wear and washing for one year.

Sample b: virgin fabric circularly knitted using 100% of yarn made of silk.

Sample c: Fabric b Fabric used after repeated wear and washing for 1 year.

Test method

Toxic gas adsorption test: To adsorb toxic gas on sample a, b or c and measure the amount of adsorbed gas, place sample a, b or c in each synthetic resin pack, and each pack is known The sample was filled with formaldehyde, isovaleric acid or ammonia as a toxic gas at a control concentration of 3, and after 3 hours, each gas concentration in each pack was measured using a detection tube. The value obtained by subtracting the gas concentration remaining in the pack from the known control concentration was taken as the toxic gas concentration adsorbed to each sample. The results are shown in Table 2. The adsorption rate refers to the ratio of the concentration of various toxic gases adsorbed to each sample to the control concentration of various toxic gases.

Toxic gas sustained release test: Samples a, b and c to which toxic gas was adsorbed in the above-mentioned toxic gas adsorption test, and tetra-pack containing air that does not contain formaldehyde, isovaleric acid and ammonia. The solution was transferred to a volume of 5 liters, and after 3 hours, the concentrations of formaldehyde, isovaleric acid and ammonia in the pack were respectively measured using a detection tube. The results are shown in Table 3. The controlled release rate refers to the ratio of the released amount to the adsorbed amount of various toxic gases described in Table 2.

Table 2

Table 3

From the results in Tables 2 and 3, when the toxic gas sustained release rate of the fabric b consisting of only silk fibers is compared with the sustained release rate of the sample c which is the fabric in a state of using the substrate for one year, On the other hand, sample a, which is the fiber material of the present invention used for one year, is by no means low in adsorption rate of toxic gas, but it is also used for one year. Compared to sample c, the sustained release rate of poisonous gas is very high for the three toxic gases listed in Tables 2 and 3. From this, the fabric material a of the present invention is It has been found that, even after one year of use, the toxic gas is adsorbed, but in an environment where the gas is not present, the adsorbed gas can be easily released from the dough a. That is, even if the odor of ammonia, which is the cause of offensive odor, is absorbed in the toilet or the like, the ammonia produced by the fabric which is the fiber material of the present invention can be easily and readily removed from the environment outside the toilet. The effect of disappearing from the clothes can be effectively sustained even when the clothes are used for one year, and it is thus shown that the malodor of ammonia also effectively holds off the malodor-retaining effect on the clothes over a long period of time. Also, the high sustained release rate of formaldehyde can be said to be an effective material for clothing prevention in recent years, which has been a problem in homesickness. Furthermore, the high sustained release rate of isovaleric acid also shows that stains of unpleasant odor due to sweat can be effectively avoided. The fiber material of the present invention which can maintain such a high toxic gas sustained release rate over a long period of time can be said to be a material suitable as a material for clothes.

(Test example 3) Heat retention rate measurement test

The change over time of the heat retaining property of the fabric which is the fiber material of the present invention was compared with that of the fabric consisting only of silk fibers.

Test sample

Sample a: The fiber material of the present invention, which is circularly knit using 60% of the yarn consisting of silk and 40% of the yarn consisting of titanium oxide-containing nicking fibers, for 1 year, Fabric used for repeated wearing and washing.

Sample b: Fabric circularly knitted using 100% of yarn made of silk.

Test method

The heat retention rates of the obtained test samples a and b were measured according to the J I S L 1 0 18 A method (isothermal method).

The test pieces of 30 cm x 30 cm are collected from two different locations of each of the samples a and b, and the test pieces are attached to a constant temperature heating element using a heat insulation tester, and the amount of heat flowing out to the low temperature outside air is constant. Two hours after the surface temperature of the heating element shows a constant value, the heat loss dissipated through the test piece is determined, and the same temperature difference and the same temperature difference without the test piece are obtained. The heat retention rate (%) was determined from the ratio to the heat loss dissipated over time. The measurement was performed twice, and the average value was calculated and used as the result. Table 4 Shown in. Table 4

Before this test, it was estimated that the heat retention rate of the fabric a is inferior to that of the fabric b consisting only of silk fibers, because naive fibers, which are inferior to silk fibers in heat retention, are also used. Surprisingly, from Table 4, despite having been used for one year, the heat retention rate of the raw material a was extremely high compared to that of the dough b. From this result, it is estimated that dough a has high heat retention when not in use, and keeps higher heat retention than dough b consisting of only silk fibers even after one year of use. It can be done. Thus, the fiber material of the fabric of the present invention, which can maintain high heat retention over a long period of time as compared to a fabric consisting only of silk, can be made of only silk, even if it constitutes thinner and lighter clothing. Since it is also possible to maintain the same heat retention as the fabric comprising, it can be said that it is an even more suitable material as a material for clothing.

(Test Example 4) Measurement of breaking strength and breaking elongation

The changes over time in breaking strength and breaking elongation of the fiber material of the present invention were compared with those of the fabric consisting of only silk fibers.

3⁄4 experience-fee

Sample a: A virgin fabric which is a fiber material of the present invention circularly knitted using a yarn made of silk 70% of the whole and a yarn consisting of a titanium fiber containing titanium oxide containing 30% of the whole. Sample b: Fabric a which has been worn and washed repeatedly for one year.

Sample c: An unused fabric circularly knitted using 100% of a yarn made of silk.

Sample d: Fabric c used for repeated wear and washing for 1 year.

Test method

The measurement test of breaking strength and breaking elongation was carried out for each of the obtained test samples a, b, c and d. In addition, the test was requested by the Agriculture, Forestry, and Fisheries Consumption Technology Center. Test length 10 cm, H.S 40 mm / min, using a type 2 material testing machine.

It was performed under the condition of 00 mm / min. The results are shown in Table 5. Table 5

From Table 5, in the case of the sample comprising the dough of the present invention, the breaking strength is 3.46 gZd to 2.47 gZd and the breaking elongation even when used (sample a) to 1 year after use (sample b). The degree of decline is only 14.3% to 10.8%, showing that the performance degradation over time is effectively suppressed. On the other hand, in the case of a sample consisting of 100% silk fabric, the breaking strength is 3.254 g / d to 0.25 when it is used (sample c) and after 1 year use (sample d). The results show that the 493 gZd and the elongation at break greatly decreased from 15. 1% to 3.2%. That is, the coating comprising the fabric which is the fiber material of the present invention capable of maintaining the breaking strength and the breaking elongation over a long period of time has the same strength as the fabric consisting only of silk fibers, even if it is thin. As it can be made, it is more suitable as a material for lightweight clothing. Industrial applicability

Even with the passage of time, yellowing due to light and yellowing due to sweat are effectively prevented over time without losing the texture unique to natural fibers such as silk, and the residual amount of poisonous gas remains less, and heat retention and strength over time Degradation can also be effectively prevented, as well as fiber materials, such as yarns, knits or textiles, etc., which can be produced with lower production costs.

Claims

The scope of the claims

1. A fiber material having an improved coating quality required, characterized in that it comprises chemical fibers containing titanium oxide and natural fibers, the two fibers being in contact with each other.

2. The fiber material having the improved coating quality according to claim 1, wherein the fiber material is a yarn made from titanium oxide-containing chemical fiber and natural fiber.

3. The fiber material is a composite yarn produced by winding a sheath yarn made of natural fibers around the outer surface of a core yarn made of chemical fibers containing titanium oxide, according to claim 2, Textile material with improved coating quality requirements.

4. The improved yarn coating quality according to claim 3, wherein the composite yarn has the sheath yarn wound onto the core yarn with the core yarn not substantially exposed. Fiber material.

5. The fiber material is a yarn made of chemical fiber containing titanium oxide and a yarn made of natural fiber. The fiber material having an improved quality required for coating according to claim 2, which is a twisted yarn produced by twisting the yarn.

6. The fiber material is a yarn according to claim 2, a composite yarn according to claim 3 or 4, or a woven fabric woven using a yarn according to claim 5 in at least a part of the yarn constituting the cloth. A textile material having an improved coating quality requirement according to claim 1.

7. The fiber material is a yarn according to claim 2, a composite yarn according to claim 3 or 4, or a knitted yarn using yarn according to claim 5 in at least a part of the yarn constituting the cloth. A textile material having an improved coating quality requirement according to claim 1.

8. As the fiber material, a yarn consisting of chemical fibers containing titanium oxide is used for the warp and / or weft of the intermediate material of the woven fabric, and a yarn consisting of natural fibers from above and below the intermediate material is said intermediate material 7. A textile material having an improved quality of coating requirements according to claim 6, which is a woven fabric woven to cover up.

9. The fiber material comprises a fabric woven from yarns of chemical fibers containing titanium oxide, and a fabric woven from yarns of natural fibers laminated and bonded on both upper and lower sides thereof. A fiber having an improved coating quality requirement according to claim 1, which is a nonwoven fabric. material.

10. The modified chemical fiber according to any one of claims 1 to 9, wherein the chemical fiber contains 0.01 to 5.0% by weight of titanium oxide based on the total weight of the fiber. Textile material with the required quality of clothing.

A fiber material having an improved coating quality required according to any one of the preceding claims, wherein the natural fibers are silk.

1 2. The above-mentioned chemical fiber is a synthetic fiber such as polyester fiber, polyamide fiber (nylon fiber), polypropylene fiber, polyethylene fiber, polypromic fiber, polyvinyl chloride fiber, viscose fiber, copper fiber The improved coating material according to any one of claims 1 to 10, which is at least one fiber selected from the group consisting of regenerated fibers such as Moyaleon and semi-synthetic fibers such as acetate fibers. Fiber material having high quality.

1 3. A method of improving the coating quality required of a fiber material by constructing the fiber material from chemical fibers containing titanium oxide and natural fibers so that the two fibers are in contact with each other.