WO2006027826A1

WO2006027826A1 - Improved fiber material and method of improving fiber material

Info

Publication number: WO2006027826A1
Application number: PCT/JP2004/012985
Authority: WO
Inventors: Yusuke Hirota; Hiroo Makimura
Original assignee: Yusuke Hirota; Hiroo Makimura
Priority date: 2004-09-07
Filing date: 2004-09-07
Publication date: 2006-03-16

Abstract

[PROBLEMS] To provide a fiber material, for example, a yarn, woven fabric or woven fabric product that without detriment to the aesthetic property peculiar to silk, has improved qualities, such as effective prevention of yellowing by light and yellowish coloring by sweat even upon being aged, reduction of the level of toxic gas residue adhering and effective prevention of moisture retention decrease and strength lowering over time, and that furthermore can be produced at suppressed production cost. [MEANS FOR SOLVING PROBLEMS] There is provided, in particular, a fiber material comprising a silk fiber and a polyamide fiber and/or polyester fiber containing at least titanium oxide, characterized in that these fibers are present in the fashion of them brought into contact with each other.

Description

Specification

Improved fiber material and its improvement method

Technical field

The present invention is capable of preventing yellowing due to light and yellowing due to sweat effectively without losing the texture unique to silk, and further maintaining heat retention and strength so that no toxic gas remains. Silk fiber materials, such as yarns, woven or knitted products, etc., which have an improved quality, such as can be prevented effectively over time, and which can not only be produced but also at lower production costs About.

Background art

Underwear, outerwear, knitted or knitted fabric products such as socks or bedding mainly made of silk fiber are good in terms of feel such as touch and appearance, but on the other hand, yellow due to the influence of light. It also has the drawback of being prone to yellowing due to the effects of heat and sweat. For this reason, various attempts have been made to overcome the pressing defects. For example, Patent Document 1 contains a compound selected from the group consisting of deoxycytidylic acid and picytidylic acid in raw silk or silk in order to produce raw silk and silk that are resistant to yellowing when irradiated with sunlight or ultraviolet rays. Discloses a method for preventing yellowing of silk and silk characterized by As another technique, Patent Document ² uses a light-resistant yarn characterized in that it is spun by combining a man-made fiber containing a far-infrared radiation material and a silk fiber, and the light-resistant yarn is used as a part of the material. A light resistant fiber product is disclosed. Furthermore, Patent Document 3 discloses a titanium oxide-containing silk fiber whose surface is laminated with titanium oxide, and the silk fiber can not be degraded or yellowed by the photocatalytic action of titanium oxide. It is done.

Patent Document 1: Japanese Patent Application Laid-Open No. 6-141739

Patent Document 2: Japanese Patent Application Laid-Open No. 2001-172835

Patent Document 3: W098 / 53132

Disclosure of the invention

Problem that invention tries to solve

However, the inventions described in these publications have problems to be solved as described below.

Mortgage Mortgage (Rule 26) The subject is left. Including UV absorbers such as deoxycytidylic acid and cytidylic acid in the silk itself as disclosed in Patent Document 1 improves the light resistance of the silk and yellowing can be prevented, but conversely, it is possible to prevent yellowing. The quality of the silk may be degraded, and the feel of the silk, such as the feeling of the eyes, may be impaired. Further, in Patent Document 2, it is relatively difficult and expensive to obtain far-infrared radiation emitting materials, so the fiber products containing the materials have problems in terms of practical use and generalization at high production costs. . Furthermore, in Patent Document 3, titanium oxide stuck on the surface of silk fiber may be relatively easily detached by the influence of sweat or contact with the body, and the yellowing suppression effect may be reduced. It is difficult to say that it is suitable for use as a material for products that come in direct contact with skin, such as underwear and socks. Furthermore, since titanium oxide is stuck on the surface of the silk fiber, there is a possibility that the texture such as feel and appearance unique to the silk fiber may be lost by the titanium oxide of the surface. Furthermore, when these conventional silk fibers are mainly processed into, for example, clothes, the clothes produced are not satisfied with the unused items, although the quality such as heat retention and strength is satisfied to some extent. During the repeated wearing of the above, the above-mentioned quality gradually declines or is lost under the influence of heat, light, moisture, weather, etc. For example, it is common to see that odors such as ammonia smell soak in clothes while wearing and not easily disappear even after washing etc. Especially, substances that cause house sickness, such as formaldehyde, adhere to clothes over time. If you do, it will cause more pain for patients with the disease. Therefore, there is a need and improvement in the quality of the fiber materials used to improve the commercial value and longevity of clothing and other various silk products.

The present invention has been made to meet the strong demand, and yellowing due to light and yellowing due to sweat are effectively prevented even during the passage of time without deterioration of the unique texture of silk, and the residual amount of poisonous gas remains. Fiber materials, such as yarns, which have improved qualities such as less heat retention, which can also be effectively prevented from decreasing with time, and which can not only be produced at lower production costs. It is intended to provide a knitted or woven product. Means to solve the problem

That is, the present invention preferably comprises at least titanium oxide, preferably polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and The present invention relates to a polyester-based fiber selected from the group consisting of Z. and polytrimethylene terephthalate fiber, and a fiber material comprising Z or a polyamide-based fiber and a silk fiber, wherein these fibers exist in contact with each other.

The first aspect of the present invention relates to the fiber material, which is a yarn produced by spinning polyester fiber containing titanium oxide and silk fiber.

The second embodiment relates to a fiber material in which the fiber material is a yarn obtained by twisting a yarn made of a polyester-based fiber containing titanium oxide and a yarn made of silk fiber.

A third aspect relates to the fiber material, which is a woven fabric woven using the yarn or yarn of the first aspect in at least a part of the yarn constituting the cloth.

A fourth aspect relates to the fiber material, which is a knitted fabric knitted using the yarn or yarn of the first aspect in at least a part of the yarn constituting the cloth.

In the fifth aspect, the fiber material uses a yarn made of a polyester fiber containing titanium oxide for the warp yarn and Z or weft of the intermediate material of the woven fabric, and the intermediate material has the upper and lower silk fibers. The present invention relates to a textile material which is a woven fabric produced by weaving such yarns so as to cover the intermediate material.

In a sixth aspect, the fiber material is a yarn comprising a polyester-based fiber containing titanium oxide, a yarn according to the first aspect, or a cloth woven using a yarn according to the second aspect, Regarding a fiber material which is a multi-layer structure cloth comprising a fabric which is entirely or mostly woven by using a yarn made of silk fiber and which is laminated and bonded on either upper or lower side of the cloth or on both upper and lower sides. .

The polyester-based fiber-containing yarn containing titanium oxide used in the present invention is preferably a hollow fiber (polyester-based hollow fiber) containing a polyester-based fiber containing titanium oxide. It relates to the material.

Also preferably, the polyester fiber relates to a fiber material containing 0.01 to 5.0% by weight of titanium oxide based on the total weight of the fiber.

According to another aspect of the present invention, first, the fiber material is formed by twisting together a hollow fiber (polyamide-based hollow fiber) consisting of a polyamide-based fiber containing titanium oxide and a yarn consisting of silk fiber fibers. The present invention relates to a fiber material which is a twisted yarn produced by

In the second aspect, the fiber material is a polyamide-based hollow fiber containing titanium oxide or a yarn according to the first aspect, and a silk fiber yarn in at least a part of the yarn constituting the cloth. The present invention relates to a fiber material which is a woven fabric which is woven separately.

In the third aspect, the fiber material is a polyamide-based hollow fiber containing titanium oxide or a yarn according to the first aspect, and a silk fiber according to at least a part of a yarn constituting a cloth. The present invention relates to a fiber material which is a knitted fabric.

In the fourth aspect, the fiber material uses a polyamide-based hollow fiber containing titanium oxide for the warp and Z or weft of the intermediate material of the woven fabric, and the intermediate material consists of silk fibers from above and below The present invention relates to a fibrous material which is a woven fabric produced by interlacing yarns so as to cover the intermediate material.

According to a fifth aspect, the fiber material is a hollow fiber made of a polyamide-based fiber containing titanium oxide or a cloth woven using the first aspect of the yarn, and the upper or lower side of the cloth or the upper or lower side of the cloth. The present invention relates to a fibrous material which is a layered structure fabric comprising a fully or mostly woven fabric which is woven using yarns of silk fiber strength lap-laid on both sides.

Preferably, the polyamide-based hollow fiber relates to a fiber material containing 0.01 to 5.0% by weight of titanium oxide based on the total weight of the yarn.

The present invention is also applicable to polyester fibers and titanium or zinc based fibers containing titanium oxide, preferably polyester and Z or polyamide based hollow fibers, wherein the fibers and the silk fibers are in contact with each other. The present invention also relates to a method of improving the quality of a fiber material containing silk fibers by constructing the fiber material as follows.

Effect of the invention

The fiber material having the improved quality of the present invention is a polyester-based fiber or titanium-based fiber containing titanium oxide and a silk fiber, and the fiber material is, for example, a yarn or a knitted fabric made of the yarn. And textiles. These fiber materials are silk fiber

In spite of the fact that the silk fiber is always in contact with the polyester fiber or the polyamide fiber containing titanium oxide, even though it is aged, it is caused by yellowing due to light or sweat over time. Yellowing can be effectively prevented. In addition, the toxic gas The product is made of the fiber material of the present invention, such as clothing, for example, even if offensive odorous gases or gases harmful to the human body are adsorbed, these gases do not exist. The adsorbed gas is released at a very high rate. As a result, it is possible to effectively avoid the situation where harmful gases that cause odors and house sickness are always adsorbed on clothing. In addition, if hollow fibers which are also polyester fibers or polyamide fibers are used for fiber materials instead of solid yarns, even if the amount of titanium oxide added is smaller, the desired quality improvement of the fiber materials can be achieved. In addition to being effective, an advantage arises that the product made from the fiber material is lightweight. Furthermore, the fabric of the present invention, which also has the strength of fiber material, is more excellent in heat retention than a fabric composed of only silk fibers after long-term use, and is also more durable in strength. Because of this, it is 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 similar to the fiber material consisting of a single silk fiber, such as the appearance of the eyes and the touch. Not only that, but also from the viewpoint of production, titanium oxide is inexpensive and easily available, and the inclusion of titanium oxide in polyester-based fibers or polyamide-based fibers can be easily achieved. Production costs are also reduced, and it is also advantageous in terms of productivity.

Brief description of the drawings

[FIG. 1] FIG. 1 is a schematic view showing a yarn of the present invention made by polyester fiber containing titanium oxide and silk fiber.

[FIG. 2] FIG. 2 shows a solid fiber or hollow fiber made of polyester fiber containing titanium oxide or a hollow fiber (polyamide based hollow fiber) which also has polyamide fiber strength and a yarn which also has silk fiber strength It is a schematic diagram which shows the twist yarn of this invention which was made to mutually be twisted.

[FIG. 3] FIG. 3 (a) is a schematic view showing a polyester-based hollow fiber or polyamide-based hollow fiber containing titanium oxide, and (b) is composed of a polyester-based fiber containing titanium oxide. It is a schematic diagram which shows a real thread.

[FIG. 4] FIG. 4 is a schematic view showing a woven fabric of the present invention plain-woven using the yarn of the present invention shown in FIG. 1 or the twisted yarn of the present invention shown in FIG.

[FIG. 5] FIG. 5 shows that a polyester fiber made of titanium oxide is contained in yarn or polyamide. An embodiment of the woven fabric according to the present invention, wherein empty yarn is used as a warp of a woven intermediate material, and a yarn made of silk fiber is woven into the intermediate material from above and below to cover the intermediate material FIG.

[Fig. 6] Fig. 6 shows a fabric woven with polyester fiber strength yarn containing titanium oxide or hollow fibers of polyamide type, and a yarn which also has silk fiber strength laminated on the upper side thereof. FIG. 6 is a schematic view showing an embodiment of a multi-layered fabric comprising a fabric woven using the above.

[Fig. 7] Fig. 7 is composed of a fabric woven using polyester fiber yarn or polyamide hollow fibers containing titanium oxide, and silk fibers lap-bonded on both upper and lower sides thereof. FIG. 5 is a schematic view showing another embodiment of a multi-layered fabric comprising a fabric woven using yarns.

BEST MODE FOR CARRYING OUT THE INVENTION

[0008] In order to obtain the fiber material of the present invention, it is necessary to use a silk fiber and a polyester fiber or polyamide fiber containing titanium oxide, and a form in which these two fibers are brought into contact with each other. It is enough to eat. As a result, yellowing due to light and yellowing due to sweat are effectively prevented even with the passage of time without impairing the texture unique to silk, and the retention of toxic gas remains less, and the heat retention and strength decrease over time. It has an improved quality that can be effectively prevented. And in order for this improved quality to be exhibited more efficiently, it is more preferable for the polyester fiber or the polyester fiber containing titanium oxide to the extent that the texture is not impaired. Contacting over a large area is one preferred embodiment.

One example of such an embodiment is, as shown in FIG. 1, a yarn 3 obtained by spinning a polyester fiber 1 and a silk fiber 2 containing a large number of titanium oxides. The yarn 3 has a form in which polyester fibers 1 and silk fibers 2 having different lengths are substantially uniformly present and in contact with each other. As a result, yellowing due to light and yellowing due to sweat are effectively prevented even with time, and the retention of toxic gas remains less, and the heat retaining property and the time-dependent decrease in strength are also effectively prevented. Even as silk fiber 2 does not lose its distinctive feel, it has an improved quality.

[0010] In another aspect of the present invention, in which the silk fiber is broad and in contact with the polyester fiber or the polyamide fiber containing titanium oxide, titanium oxide is used. Examples thereof include fiber materials in the form of yarns produced by twisting together a solid yarn or hollow fiber that also contains polyester fiber strength, or a hollow fiber that consists of hollow fiber or polyamide fiber and a yarn that also contains silk fiber strength. For example, as shown in FIG. 2, the polyester fiber containing titanium oxide or the yarn 4 also having a polyamide fiber strength and the yarn 5 also having a silk fiber strength are twisted and come into contact with each other, resulting in a wide contact portion. As a result, the yarn 6 produced has an improved quality. The twisted yarn may be either right-handed (S-twisted) or left-handed (Z-twisted). Furthermore, the yarn containing titanium oxide may be a monofilament. In the case of strong twisted yarn, since most of the outer surface is occupied by silk yarn, there is an advantage that the texture is almost the same as that of a single silk fiber yarn.

[0011] The yarn as the fiber material of the present invention may also be, for example, an outer surface of a core yarn made of polyester based fibers containing titanium oxide in addition to those produced by twisting a plurality of the above-mentioned twisted yarns. And the composite yarn obtained by winding a sheath yarn made of silk fiber.

[0012] As mentioned above, although the example of the form in which the silk fiber is in contact with the polyester fiber or the polyamide fiber containing titanium oxide is described above, the polyester fiber or the polyester fiber containing titanium oxide here The form of the polyamide fiber itself is described. As shown in FIG. 3 (b), when the solid yarn contains titanium oxide 9, the titanium oxide 9 is contained over the entire cross-sectional circle. Therefore, although the effect of quality improvement of the silk fiber is produced by contact between the polyester fiber or the polyamide fiber and the silk fiber, the quality of the silk fiber is improved, but at that time, the outside which is close to and in position with the contacted silk fiber. While titanium oxide 9 near the surface can contribute to the quality improvement effect on silk fibers, titanium oxide 9 near the center, which is further apart from the silk fiber strength, is almost the same as the effect on silk fiber quality improvement. It will not be involved. On the other hand, as shown in FIG. 3 (a), the hollow fiber 7 also having a polyester fiber or polyamide fiber strength contains titanium oxide 9 near the outer surface, that is, closer to the contacting silk fiber. Of the structure to be Therefore, substantially all of the contained titanium oxide 9 can exert the effect of quality improvement on silk fibers, and the effect is more effective than that of solid yarn 8. In other words, the fiber material in which the hollow fiber 7 is used can exhibit the same effect of quality improvement even if the acid titanium content is less than the fiber material in which the solid yarn 8 is used. So it is economical. Furthermore, since the hollow fiber 7 has a hollow structure, the hollow fiber 7 and the solid fiber 8 having the same thickness are compared with each other. It also has the advantage of being lightweight and, for example, more suitable for clothing applications where lightness is required.

The hollow fibers used in the present invention include, for example, those having a fineness of about 126 dtex and having a breaking strength of 200 cN or more, a breaking strength of 1.5 cNZT or more, and a breaking elongation of 10% to 40%. Can do. If the breaking strength at a fineness of approximately 126 dtex is less than 200 cN, the breaking strength is less than 1.5 cNZT, and the breaking elongation is less than 10% or 40%, a mechanical strength suitable for practical use can not be obtained. More preferable hollow fibers used in the present invention are those having a fineness of about 126 dtex, having a breaking strength of 300 cN or more, a breaking strength of 2.5 cNZT or more, and a breaking elongation of 20% to 30%.

In the present invention, the hollow fiber of polyester-based or polyamide-based hollow fiber has a hollow area in its cross section [(cross-sectional area of hollow portion Z (cross-sectional area of polymer portion + cross-sectional area of hollow portion)) X X%]

A content of 5% to 30% is preferably used. At 5% or less, there is no difference in the effect of improving the quality of the fiber material when the same amount of titanium oxide is contained as compared to the solid yarn, and if it exceeds 30%, the strength of the hollow fiber is increased. Because it decreases, its use is limited. In consideration of the balance between the effect of improving the quality of the fiber material and the strength, the hollow ratio is preferably 15 to 25%. In addition, the hollow fiber said to this specification is a yarn which consists of a polyester type or a polyamide type polymer, and includes the thing of all the forms which have a hollow part.

The polyester-based or polyamide-based hollow fiber containing titanium oxide used in the present invention is, for example, a polyester-based or polyamide-based polymer in a molten state in which titanium oxide is uniformly dispersed. It is obtained by spinning through a spinneret having a horseshoe-shaped slit formed.

Further, the fiber material of the present invention is a fiber material of improved quality obtained by the contact of a polyester fiber or polyamide fiber containing titanium oxide with silk fiber. In addition to the form of the yarn, the form may also take the form of a cloth. For example, a yarn made of polyester fiber containing titanium oxide and silk fiber, or polyester fiber containing polyamide or polyamide fiber containing titanium oxide, in at least a part of the yarn constituting the cloth is also used. Yarns made from yarns that are Below, in the present specification, these are abbreviated as titanium oxide-containing yarns. Or woven fabrics knitted using these titanium oxide-containing yarns. The woven fabric is obtained, as an example, as shown in FIG. 4, using a titanium oxide-containing yarn as the warp yarn 10 and Z or weft yarns 11, and obtained by plain weave crossing each other one by one (woven fabric 12). Here, warp 10 and weft 11 may be mixed or cross-woven with other types of yarn in addition to titanium oxide-containing yarn, as long as the improved quality of the produced woven fabric can be maintained. You may use it. For example, a mode in which a silk yarn is used in all warps 10 and a titanium oxide-containing thread (twist) is used in all wefts 11 in addition to a mode in which titanium oxide-containing threads are used for all warps 10 and wefts 11 The inner titanium oxide-containing yarns of warp 10 are used in appropriate proportions, the other remaining warps 10 are silk yarns, and all weft yarns 11 are silk yarns, titanium oxide-containing yarns, or silk yarns and acid. The aspect etc. which use both of titanium dioxide containing yarns are mentioned.

[0015] A more preferable embodiment of the woven fabric according to the present invention is a solid yarn or hollow fiber or polyamide-based hollow fiber which also has a polyester fiber strength containing titanium oxide as the warp and Z or weft of the intermediate material of the woven fabric. It is a woven fabric made by weaving a yarn of silk fiber strength from above and below the intermediate material so as to cover the intermediate material. For example, a woven fabric 13 as shown in FIG. 5 has yarns 14 made of polyester fiber having a titanium oxide content as warps of the intermediate material and yarns 15 and 15 'also having silk fiber strength. It is made in contact to cover material's warp 14. Therefore, the texture of the woven fabric 13 is the same as that of the woven fabric woven of silk fiber alone, with the feel such as feel and appearance being particularly suitable as a material of products for direct contact with the skin such as underwear and socks. It is.

[0016] Another embodiment of the fiber material having the improved quality of the present invention is shown in Figs. 6 and 7, using a polyester-based fiber or polyamide-based fiber yarn containing titanium oxide. An example is a multi-layered fabric 18 comprising a woven fabric 16 and a fabric 17 woven with a yarn consisting entirely or mostly of silk fibers laminated on the upper side thereof. The multilayer structure fabric 18 is an embodiment in which the fabric 17 is sewn vertically and horizontally on the upper and lower sides of the fabric 16 with silk thread 19 (dotted line in the drawing) and joined. Of course, the fabric 16 can also take the form of being woven using the above-mentioned titanium oxide-containing yarn.

[0017] In a preferred embodiment, a polyester fiber or titanium fiber containing titanium oxide shown in FIG. A sun-made fabric consisting of a fabric 20 woven using yarns that also have polyamide fiber strength, and a fabric 21 that is woven together using all or most of the yarns that also consist of silk fiber strength laminated on both the upper and lower sides. Structural cloth 22 is mentioned. Since the sandwich structure fabric 22 is in contact with the fabric 21 in a form in which the fabric 20 is sandwiched between the upper fabric 21 and the lower fabric 21, the entire sandwich structure fabric 22 is yellowed by sweat or sweating over time. The effect of effectively preventing yellowing due to adhesion and reducing residual adhesion of toxic gas and further suppressing heat retention and decrease in strength over time can be obtained. Is substantially equivalent to that of Cloth 21 alone.

The cloth 16 constituting the double layer structure cloth 18 and the cloth 20 constituting the sandwich structure cloth 22 can, of course, be embodied by being woven using the above-mentioned titanium oxide-containing yarn.

The form of titanium oxide which can be used in the present invention is preferably such that the average particle size thereof is not more than 0.5 m, which is desirable for the powder form. When the particle size exceeds 0.5 μm, the polyester fiber or polyamide fiber fiber containing the titanium oxide is easily broken. In addition, titanium oxide is generally contained in the polyester fiber or the polyamide 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 quality of the fiber material to be composed is not effectively improved. When the content exceeds 5.0% by weight, the quality of the fiber material is not further improved, and furthermore, yarn breakage in the spinning process or drawing process of polyester fiber or polyamide fiber is easily generated, and spinning is also performed. This is not preferable because it increases the possibility of frictional damage to the rollers, guides, etc. of the machine, knitting machine or loom. The content of titanium oxide is preferably 0.1 to 1.0% by weight based on the total weight of the fiber, in consideration of the balance between the effect of the improvement of the quality of the fiber material and the production disadvantage. The polyester-based or polyamide-based fiber containing such titanium oxide is melted by, for example, the raw material polymer by wet spinning, dry spinning or melt spinning as appropriate, and titanium oxide is directly added thereto. It can be manufactured by mixing and spinning thereafter.

In addition, polyester fibers preferably used in the present invention are selected from the group consisting of polyethylene terephthalate fibers, polypropylene terephthalate fibers, polybutylene terephthalate fibers and polytrimethylene terephthalate fibers. Hereinafter, the present invention will be more specifically described by test examples, but the present invention is not limited thereby.

Example

Test Example 1 Yellowing and Yellowing Test

The degree of yellowing and yellowing due to light or sweat of the 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 made of only silk fibers. Sample A-1: 100% by weight of melted polyethylene terephthalate (hereinafter abbreviated as PET) and 1.0% by weight of titanium oxide (average particle diameter: 0 .: m) are mixed and mixed until uniform After that, the horseshoe-shaped spinneret is spun using a spinning machine equipped with a discharge port and a hollow fiber containing titanium oxide (breaking strength is 390 cN and breaking strength is 3.10 at a fineness of approximately 126.2 dtex). 09cNZT, elongation at break 25.8%) was obtained. Then, a hollow fiber containing the titanium oxide is sewn onto the woven fabric made of a single silk fiber so as to be 4% with respect to the woven silk fabric, and the fabric of the present invention is a fabric of the present invention. Sample A-1 was obtained.

Sample B-1: 100% by weight of melted PET and 1.0% by weight of titanium oxide (average particle size: 0.1 IX m) were mixed and mixed until uniform, and then using an appropriate conventional method. The melt was spun to obtain a solid yarn containing titanium oxide. Then, the solid yarn containing the above-mentioned titanium oxide is sewn in a satin-like manner so as to be 4% with respect to the silk fabric with respect to the silk fiber woven fabric, and the fabric of the present invention is used. One sample B-1 was obtained.

Sample C 1: Solid yarn consisting of silk yarn and PET containing 1.0% by weight of titanium oxide was cross-woven using 32% and 68% of the whole, respectively. Obtained sample D-1: A cloth woven from a solid yarn made of PET containing 1.0% by weight of titanium oxide was overlaid with a woven fabric of single strength silk on its upper side. By bonding using silk thread, sample D-1 which is a cloth of the present invention was obtained.

Sample E-1: 100% by weight of melted PET and 1.0% by weight of titanium oxide (average particle diameter: 0.1 IX m) were mixed and mixed until uniform, and then using conventional methods. I made it with fiber. Sample E-1 which is a knitted fabric of the present invention is obtained by spinning a strong fiber and a silk fiber into a yarn of the present invention at a ratio of 47% and 53% and forming a circular knit using such a yarn. The Sample F-1: A woven fabric consisting of a single silk fiber was used.

The dye fastness test was performed on the obtained samples A-1, B-1, C-1, D-1, E-1 and F-1. In addition, according to the light resistance test method IS L0842 (carbon ak light test) as described below, the perspiration resistance test (acid and alkali) was performed according to WIS L0848.

Method of JIS L0842 (Carbon arc light test)

Samples A-1, B-1, C-1, D-1, E-1 or F-1 and a blue 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 a test piece rotation rack without a gap, and exposure was performed according to JIS L 0841 6. (1) (first exposure method). The judgment was made in accordance with JIS L 0801 9. (Determination of color fastness).

JIS L0848 (sweat resistance test) method

Samples A-1, B-1, C-1, D-1, E-1 or F-1 are cut into pieces of 100 x 40 mm in size, and the same size as specified in JIS L0803. Between the two attached white cloths, the two sides were sewn together to form composite test pieces. Next, the composite test pieces were pressed into two beakers, each containing an acidic artificial sweat and an alkaline artificial sweat, and powered to allow the test liquid to permeate uniformly. Then, the test solution was poured out, and the composite test piece was sandwiched between two glass rods and ironed to such an extent that the excess test solution did not drip or fall. The composite test piece was sandwiched between two glass plates, attached to a perspiration tester, and a pressure of 12.5 kPa was applied. Subsequently, the sweat 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 test machine, and the test piece and two attached white cloths were separated and dried at 60 ° C. or less. Judgment of discoloration of the test piece was performed according to JIS L 0801 9. (Determination of dye fastness). The results are shown in Table 1.

[table 1] l

As shown in Table 1, Sample F-1 is a cloth of the present invention, Sample A-1, while the sample F-1 is graded 2-3 in both the light resistance test and the sweat resistance test. In each of B-1, C-1, D-1, and E-1, good results of grade 4 or higher were obtained. That is, the samples A-1, B-1, C1, D-1 and E-1 containing the amount of titanium oxide according to the present invention are extremely yellowish due to the influence of light and the influence of sweat. It is understood that it is effectively suppressed. In addition, although the samples A-1, B-1, C 1, D-1 and E-1 also use the PET yarn which is a chemical fiber, the texture such as appearance and touch is a silk single It was substantially equivalent to one cloth. In addition, samples A and B used a titanium oxide-containing PET with only 4% of the entire force! /, Although yellowing and yellowing suppression effects were effectively exhibited. The

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

Changes over time in adsorption and retention characteristics of toxic gas of the fabric which is the fiber material of the present invention were compared with those of the fabric which is only a silk fiber.

g3⁄4 test sample

Sample a: A fabric which is a fiber material of the present invention, in which a yarn made of silk is 70% of the whole and a yarn consisting of a titanium oxide-containing PET fiber (containing 1% of titanium oxide) is used. , Fabrics worn repeatedly for a year, used for washing.

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.

Ran Going

Toxic gas adsorption test: Toxic gas is adsorbed to the sample a, b or c and the amount of adsorbed gas is measured For identification purposes, place samples a, b or c in their respective plastic packs and fill each pack with formaldehyde, isovaleric acid or ammonia as toxic gas at a known control concentration, and after 3 hours Each gas concentration in each pack was measured using a detector tube. Then, 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 each type of toxic gas adsorbed to each sample to the control concentration of each type of toxic gas.

Toxic gas sustained release test: Samples a, b and c on which toxic gas was adsorbed according to the above-mentioned toxic gas adsorption test are air filled with formaldehyde, isovaleric acid and ammonia not containing tetra-pack ( 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 absorbed amount of various toxic gases described in Table 2.

[Table 2] Table 2

[Table 3] Table 3

From the results of Table 2 and Table 3, when the toxic gas controlled release rate of fabric b, which is the only force of silk fiber, is compared with the controlled release rate of sample c, which is the fabric after using the fabric for 1 year, the value is extreme. On the other hand, sample a, which is the fiber material of the present invention used for one year, is not a low adsorption rate of poison gas, but sample c used for one year as well. In comparison, the toxic gas release rates are very high for the three toxic gases listed in Tables 2 and 3. From this fact, although the fiber material of the present invention, fabric a, is used for one year, toxic gas is adsorbed, but in the environment where the gas is not present, the adsorbed gas is from fabric a. It can be seen that it can be released easily. That is, even with the fabric made of the fabric material of the present invention, even if ammonia odor, which is the cause of offensive odor, is adsorbed in the toilet or the like, the ammonia can be easily removed from the clothing in an environment outside the toilet. The eradication effect can be effectively sustained even when the clothing is used for one year, so that the ammonia odor is shown to effectively sustain the odor retention effect on the clothing as well over a long period of time. In addition, the high sustained release rate of formaldehyde makes it possible to be a material for clothing that is particularly effective for the prevention of sick house sickness that has become a problem in recent years. Furthermore, it can be seen from the high sustained release rate of isovaleric acid that stains of unpleasant odor due to sweat can be effectively avoided. As in the case of the present invention, the fiber material of the present invention which can maintain high sustained release rate of toxic gas over a long period of time can be said to be particularly suitable as a material for coating. (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 examined in comparison with that of a fabric in which only silk fibers are made. Test sample

Sample a: 60% of the yarn made of silk and a PET fiber containing titanium oxide (containing 1% of titanium oxide) 40% of the whole yarn is woven by circular knitting of the fiber material of the present invention The fabric used for a year, worn repeatedly to wash.

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

Passing exams

The heat retention rates of the obtained test samples a and b were measured according to JIS L 1018A method (isothermal method).

Specimens 30 cm x 30 cm of two different pieces of sample a and b are collected, and the specimen is attached to a constant temperature heating element using a heat insulation tester, and the amount of heat flowing out to the low temperature atmosphere becomes constant. 2 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 time as in the bare state without the test piece. The heat retention rate (%) was determined from the ratio to the heat loss dissipated in The measurement was performed twice, and the average value was calculated and used as the result. The results are shown in Table 4.

[Table 4] Table 4 Before the test, it was estimated that the heat retention rate of the fabric a is inferior to that of the fabric b, which can be treated only with silk fibers, because PET fibers, which are inferior to silk fibers in heat retention, are also used. Surprisingly, from Table 4, despite the fact that it was used for one year, the heat retention rate of dough a was extremely high compared to that of dough b. From this result, it is considered that the fabric a has high heat retention at the unused time point, and has higher heat retention than the material b consisting of only silk fibers after one year use. It can be guessed. Thus, the fiber material of the fabric of the present invention, which can maintain higher heat retention over a long period of time as compared to a fabric which is also only silk, can produce only silk, even if it constitutes thinner and lighter clothing. Since it is also possible to maintain the same heat retaining property as the dough to be beaten, it is a material more suitable as a material of the clothes. It can be said that it is a fee.

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

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

g3⁄4 test sample

Sample a: Unused fiber material of the present invention according to the present invention in which a yarn made of silk is 70% in total and a yarn consisting of a titanium oxide-containing PET fiber (containing 1% of titanium oxide) is used in 30% of the whole. Fabric for.

Sample b: Fabric a worn and washed repeatedly for one year.

Sample c: An unused fabric circularly knitted using 100% yarn that also produces silkiness.

Sample d: Fabric c was used after repeated wear and washing for one year.

Ran Going

The measurement test of breaking strength and breaking elongation was done about the obtained test samples a, b, c and d, respectively. The test was conducted by the Agriculture, Forestry and Fisheries Consumption Technology Center using a Tensilon type 2 material tester under the conditions of a test length of 10 cm, H. S40 mm Z minutes, and C. SlOO mm Z minutes. The results are shown in Table 5.

[Table 5]

Table 5

According to Table 5, in the case of the sample of the present invention, the breaking strength is 3.46 g Zd to 2.47 g Zd and the breaking elongation even when it is used (sample a) to 1 year after use (sample b). The degree of decline is only 14.3% to 10.8%, indicating that the deterioration of performance over time is effectively suppressed. On the other hand, in the case of a sample that also has 100% silk strength, it has a breaking strength of 3.254 g Zd to 0.493 g Zd and breakage when reaching from 1 year old (sample c) to after 1 year use (sample d). The results show that the degree of elongation significantly decreased from 15. 1% to 3.2%. That is, 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. As it is obtained, it is more suitable as a material for lightweight clothing.

Claims

The scope of the claims

[1] A fiber material comprising a polyester fiber and a Z or polyamide fiber containing at least titanium oxide and a silk fiber, wherein the fibers exist in contact with each other.

[2] The fiber material according to claim 1, wherein the fiber material is a yarn produced by spinning polyester fiber containing titanium oxide and silk fiber.

[3] The fiber material according to claim 1, wherein the fiber material is a twisted yarn formed by twisting together a yarn made of a polyester-based fiber containing titanium oxide and a yarn made of silk fiber.

[4] The fiber material is a woven fabric obtained by using the yarn according to claim 2 or the yarn according to claim 3 at least a part of the yarn constituting the cloth. Textile material described.

[5] The fiber material is a yarn knitted from a yarn according to claim 2 or a yarn according to claim 3 at least at a part of a yarn constituting a cloth. Fiber material of

[6] The above-mentioned fiber material is a polyester fiber made of titanium oxide, and used as yarns and yarns or wefts of the intermediate material of the woven fabric, and the intermediate material contains silk fibers from above and below. The textile material according to claim 1, which is a woven fabric produced by weaving yarns comprising the yarn to cover the intermediate material.

[7] The above-mentioned fiber material is a polyester-based fiber yarn containing titanium oxide, a yarn according to claim 2 or a cloth woven using the yarn according to claim 3, and a cloth of the cloth The fiber material according to claim 1, which is a multilayer structure cloth comprising a fabric which is entirely or mostly woven by using a yarn having silk fiber strength, which is laminated and bonded on either upper or lower side or both upper and lower sides.

[8] The yarn which is also a polyester fiber having a titanium oxide content, is a hollow fiber (a polyester fiber hollow fiber) also having a titanium fiber containing titanium oxide. Or The textile material according to item 1.

[9] The polyester-based fiber contains 0.1 to 5.0% by weight of titanium oxide based on the total weight of the fiber! Textile material described.

[10] Whether the polyester fiber is a polyethylene terephthalate fiber, a polypropylene terephthalate fiber, a polybutylene terephthalate fiber, or a polytrimethylene terephthalate fiber The fiber material according to any one of claims 1 to 9, which is selected from the group consisting of

[11] The fiber material is a twisted yarn formed by twisting together a hollow fiber (polyamide-based hollow fiber) made of polyamide-based fiber containing titanium oxide and a yarn also having silk fiber strength. The textile material of 1 description.

[12] The fiber material is woven by using a polyamide-based hollow fiber containing titanium oxide or a yarn according to claim 11 and a silk fiber yarn in at least a part of the yarn constituting the cloth. The fiber material according to claim 1, which is a woven fabric.

[13] The fiber material is knitted at least in a part of the yarn constituting the cloth, using a polyamide hollow fiber containing titanium oxide or the yarn according to claim 11 and a yarn of silk fiber strength. The fiber material according to claim 1, which is a knitted fabric.

[14] As the fiber material, hollow fibers made of polyamide-based fibers containing titanium oxide are used for the warp yarn and Z or weft of the intermediate material of the woven fabric, and the intermediate material is made of silk from above and below. The textile material according to claim 1, wherein the textile material is a woven fabric made by weaving yarns of fibers so as to cover the intermediate material.

[15] The fiber material may be a hollow fiber of polyamide fiber containing titanium oxide or a cloth woven using the twisted yarn according to claim 11, and the upper and lower sides of the cloth or both sides thereof. The fiber material according to claim 1, wherein the fiber material is a laminated structure fabric and a fabric in which all or most of them are woven by using yarns made of silk fibers and laminated.

[16] The polyamide-based hollow fiber contains 0.1 to 5.0% by weight of titanium oxide, based on the total weight of the yarn! The textile material according to item 1.

[17] The polyester fiber and the Z or polyamide fiber containing titanium oxide, preferably polyester and Z or polyamide hollow fibers are used, and the fiber and the silk fiber are present in contact with each other. A method of improving the quality of fiber materials, including silk fibers, by constructing the fiber material.