JP7014662B2 - Friction-proof composite fibers, fabrics and clothing - Google Patents

Description

The present invention relates to a friction-proof composite melt fiber that prevents the fabric from melting due to frictional heat generated between the floor and the fabric during a fall or sliding in a gymnasium or the like, and a fabric and clothing using the same.

Polyester fibers are widely used in the field of sports clothing due to their excellent mechanical and chemical properties. However, unlike natural fibers such as cotton and rayon, synthetic fibers such as polyester melt the fabric due to the frictional heat generated between the floor and the fabric when it falls or slides in a gymnasium, etc., and holes are opened in the fabric. It has the drawback of being lost. Also, especially in the field of sports clothing, since it is used in situations involving a lot of sweating, waste products such as lactic acid and urea contained in sweat and sebum attached to fibers due to rubbing between clothes and skin while sweating. Etc. may give off a foul odor when they are decomposed by bacteria on the surface of clothes.

In order to solve such a problem, as a method for preventing the fabric from melting due to the above-mentioned frictional heat, for example, in Patent Documents 1 and 2, a resin component having a melting point lower than that of the sheath component resin is arranged in the core portion. A method has been proposed in which the core portion is melted before the temperature rises to the temperature at which the sheath portion is melted by frictional heat, and the heat absorption at that time prevents the entire fiber from melting. Further, in Patent Document 3, a sea-island type alloy in which a low melting point component having a melting point lower than that of the sheath component is dispersed in a resin used for the sheath component is arranged in the core portion, and the core portion is covered with a thin skin by the sheath component. It has been proposed to use it more effectively to prevent melting due to frictional heat.

Further, as a method of imparting antibacterial and deodorant properties to the fiber, for example, a method of absorbing the titanium dioxide component carrying silver as an antibacterial agent component on the fiber surface (Patent Document 4), and then applying a quaternized ammonium salt to the fiber surface. A method of processing and adhering (Patent Document 5), a method of kneading an antibacterial agent into fibers (Patent Document 6), and the like are disclosed.

Japanese Unexamined Patent Publication No. 4-65542 Japanese Unexamined Patent Publication No. 6-49712 JP-A-2015-196914 Japanese Unexamined Patent Publication No. 10-280270 Japanese Unexamined Patent Publication No. 8-31176 Japanese Unexamined Patent Publication No. 2005-97785

However, in recent years, even in clothing in the sports field, there has been no proposal for a fiber having both friction-proof and antibacterial and deodorant properties, despite the demand for a wide variety of functions.

Therefore, an object of the present invention is to obtain a friction-proof composite fiber having antibacterial and deodorant properties, which satisfies both antibacterial and deodorant properties and friction-proof properties at the same time, and a cloth and clothing made of the same.

In order to achieve the above object, the present invention is a sea-island type composite fiber composed of a sea component and an island component, and the island component is a resin containing a resin having a melting point of 30 ° C. or higher lower than that of the resin constituting the sea component. The first gist of the sea component is a friction-proof composite fiber having an antibacterial and deodorant function, which contains inorganic particles that emit one or more ions selected from the group of silver ions, zinc ions, and copper ions.

The second gist of the friction-proof composite fiber is that the inorganic particles are at least one selected from the group of water-soluble glass, zirconium phosphate and zeolite.

Further, in the friction-proof composite fiber, the sea component is made of polyester or polyamide, and the island component contains one or more resins selected from the group of high-density polyethylene, low-density polyethylene and linear low-density polyethylene. That is the third point.

In the friction-proof composite fiber, the island component comprises at least one resin of polyester or polyamide and one or more resins selected from the group of high-density polyethylene, low-density polyethylene and linear low-density polyethylene. The fourth gist is that it is a sea-island type alloy resin consisting of a sea phase and an island phase.

The fifth gist is a cloth containing 20% by mass or more of the friction-proof composite fiber, and the sixth gist is a woven fabric containing the cloth.

According to the friction-proof composite fiber of the present invention, it is possible to provide a cloth or clothing having high friction-proof property and antibacterial and deodorant property.

This is an example of the cross-sectional shape of the friction-proof composite fiber of the present invention. This is an example of the cross-sectional shape of the friction-proof composite fiber of the present invention. This is an example of the cross-sectional shape of the friction-proof composite fiber of the present invention. This is an example of the cross-sectional shape of the friction-proof composite fiber of the present invention.

Hereinafter, the present invention will be described in detail.
The friction-proof composite fiber of the present invention is a sea-island type composite fiber composed of a sea component and an island component.
The resin constituting the sea component of the friction-proof composite fiber of the present invention is not particularly limited as long as it is a fiber-forming resin, and examples thereof include polyester and polyamide.

The polyester in the present invention is a resin synthesized from a dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof. Examples of such polyesters include polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate and the like.

Further, other components may be copolymerized with these polyesters as long as the object of the present invention is not impaired. Specifically, as the copolymerization component, the dicarboxylic acid component includes isophthalic acid, naphthalenedicarboxylic acid, 4,4-diphenyldicarboxylic acid, adipic acid, sebacic acid and its ester-forming derivative, and the sulfonate group-containing isophthalic acid component. Examples thereof include components having a functional group such as. Examples of the diol component include diethylene glycol, hexamethylene glycol, neopentyl glycol, cyclohexanedimethanol and the like. Further, polyoxyalkylene glycols such as polyethylene glycol and polypropylene glycol can also be mentioned. The copolymerization amount is preferably 10 mol% or less, more preferably 5 mol% or less, per constituent repeating unit.

Further, these polyesters may contain additives such as a matte agent, a colorant, a heat-resistant stabilizer, and an ultraviolet absorber as long as the purpose is not impaired.
The viscosity of the polyester in the present invention is not particularly limited, and a polyester having an extreme viscosity [IV] used for ordinary polyester fibers can be used. From the viewpoint of spinnability and mechanical strength of the fiber, for example, in the case of polyethylene terephthalate, the ultimate viscosity [IV] is preferably 0.4 to 1.5, and the ultimate viscosity [IV] is 0.55 to 1. It is more preferably 0.

The polyamide in the present invention includes polyamide 6 obtained by ring-opening polymerization of ε-caprolactam, polyamide 66 obtained by polycondensing diamine and dicarboxylic acid, for example, polyamide 66 obtained by polycondensing hexamethylenediamine and adipic acid, and hexa. Polyamide 610 obtained by polycondensation of methylenediamine and sebacic acid is suitable.

Further, these polyamides may contain additives such as a matting agent, a colorant, a heat-resistant stabilizer, and an ultraviolet absorber as long as the purpose is not impaired.
The viscosity of the polyamide in the present invention is not particularly limited, and a polyamide having a relative viscosity [ηr] used for ordinary polyamide fibers can be used. From the viewpoint of spinnability and mechanical strength of the fiber, for example, in the case of polyamide 6, the relative viscosity [ηr] is preferably 2.0 to 3.4, and the relative viscosity [ηr] is 2.4 to 3. It is more preferably 0.

Next, the island component of the friction-proof composite fiber of the present invention will be described in detail.
It is important that the island component contains a resin having a lower melting point than the resin constituting the sea component (hereinafter, may be referred to as a low melting point resin).

The low melting point resin has a lower melting point of 30 ° C. or higher, preferably 80 ° C. or higher, and more preferably 100 ° C. or higher than the resin constituting the sea component. .. If the melting point difference between the resin constituting the sea component and the low melting point resin is small, the friction-proofing effect tends to be small, and if the melting point difference is less than 30 ° C., the friction-proofing effect is substantially not exhibited.

Examples of the low melting point resin include polyester, polyamide, polypropylene, polyethylene and the like having a lower melting point than the sea component when the sea component is polyester or polyamide. From the viewpoint of improving friction-proof property, polyethylene is preferable, and specific examples thereof include high-density polyethylene, low-density polyethylene and linear low-density polyethylene, and these resins are used alone. It may be used as a mixture of two or more.

The island component may be composed of only a low melting point resin, or may partially contain a low melting point resin.

The island component may be a sea-island type alloy resin composed of a sea phase and an island phase, which contains a fiber-forming resin of a sea component such as polyester or polyamide and a low melting point resin.

When the sea component is composed of polyester or polyamide, the island component preferably contains at least one low melting point resin of high density polyethylene, low density polyethylene and linear low density polyethylene.

When the island component is a sea-island type alloy resin, the island component is the same type of resin as the sea component in terms of improving the adhesion (affinity) between the sea component and the island component and improving the friction-proof property. It is preferably a sea-island type alloy resin composed of a mixture containing a low melting point resin.

A specific suitable resin combination when the island component is a sea-island type alloy resin is selected from the group of at least one resin of polyester or polyamide and a group of high density polyethylene, low density polyethylene and linear low density polyethylene. It is mentioned that it contains one or more resins to be made. Among these, a sea-island type alloy in which at least one resin of polyester or polyamide is selected from the group of sea phase, high-density polyethylene, low-density polyethylene and linear low-density polyethylene, and one or more resins are island phases. It is preferably a resin.

When the island component is a sea-island type alloy resin, the low melting point resin is preferably 5 to 45% by mass, more preferably 10 to 30% by mass, based on the island component, from the viewpoint of exhibiting a stable friction-proofing effect. It is mass%.

When the island component is a sea-island type alloy resin, it is preferably contained by adding a compatibilizer. Specific examples of the compatibilizer include ethylene / acrylic acid copolymer, ethylene / methacrylic acid copolymer, ethylene / ethyl acrylate copolymer, ethylene / vinyl acetate copolymer, and ethylene / glycidyl methacrylate copolymer. , Ethylene / vinyl acetate / glycidyl methacrylate copolymer, maleic anhydride grafted polyethylene, acrylic acid grafted polyethylene, maleic anhydride grafted ethylene / propylene copolymer, ethylene / propylene-methacrylic acid grafted glycidyl copolymer, maleic anhydride Examples thereof include a grafted ethylene / propylene / 1,4-hexadiene copolymer or an acrylate-grafted ethylene / vinyl acetate copolymer. It is preferable to use one or more of these compatibilizers, and two or more of them may be used.
The amount of the compatibilizer added is preferably about 0.1 to 10% by mass, more preferably 0.2 to 5% by mass, based on the total amount of the resin constituting the island component.

Next, the friction-proof composite fiber of the present invention contains inorganic particles in which the sea component can emit one or more ions selected from the group of silver ions, zinc ions and copper ions. Hereinafter, such inorganic particles are referred to as inorganic particles in the present invention. When the inorganic particles in the present invention are contained, it has an antibacterial and deodorant effect.

Preferable examples of the inorganic particles in the present invention include various inorganic compounds carrying antibacterial metals such as silver, copper, zinc, bismuth, cobalt and nickel.
As the inorganic compound (supporter) that supports the antibacterial metal, for example, those shown in the following (1), (2), and (3) are preferably mentioned.
(1) Inorganic ions such as zeolite, zirconium phosphate, hydroxyapatite, titanium phosphate, potassium titanate, bismuth-containing hydroxide, antimony-containing hydroxide, zirconium-containing zirconium, hydrotalcite, calcium phosphate, calcium zinc phosphate, calcium silicate, etc. Exchanger (2) Inorganic adsorbent such as titanium oxide, activated carbon, active alumina (3) Inorganic medium such as silica-based glass, water-soluble glass or silica gel (atypical glassy substance)
Among these, it is an inorganic particle in which silver alone, silver and copper or silver and zinc are supported on at least one inorganic compound selected from water-soluble glass, zirconium phosphate, titanium phosphate and zeolite. preferable.
The friction-proof composite fiber of the present invention may use these inorganic particles of the present invention alone or in combination of two or more.

Hereinafter, the method for obtaining the inorganic particles in the present invention will be illustrated.
When the carrier is zeolite, for example, as shown in Japanese Patent Application Laid-Open No. 59-133235, the zeolite fine particles are treated with an aqueous solution of silver nitrate to carry out an ion exchange reaction, whereby silver is supported on the zeolite in the present invention. Inorganic particles can be obtained. As a commercially available product, for example, it can be obtained as "Zeomic (registered trademark) (trade name) " manufactured by Sinanen Zeomic.
When the carrier is zirconium phosphate or titanium phosphate, for example, lithium carbonate, diammonium hydrogen phosphate and zirconium oxide, or titanium oxide are mixed in a predetermined amount as disclosed in JP-A-3-83905. The compound obtained by sintering at 1300 ° C. is finely pulverized and then treated with an aqueous solution of silver nitrate to obtain the inorganic particles of the present invention. As a commercially available product, for example, it can be obtained as "Novalon (registered trademark) (trade name)" manufactured by Toagosei Co., Ltd.
When the carrier is water-soluble glass, for example, as disclosed in Japanese Patent Application Laid-Open No. 3-124810, a predetermined amount of silver oxide, boron oxide, silica and sodium oxide are melt vitrified and finely pulverized to obtain silver. Inorganic particles in the present invention that emit ions can be obtained, or a predetermined amount of zinc oxide, boron oxide and sodium oxide are melted and vitrified at 1000 to 1300 ° C. and finely pulverized as disclosed in JP-A-7-257938. The inorganic particles in the present invention that release the zinc ions thus obtained can be obtained. As a commercially available product, for example, it can be obtained as "Aeon Pure (registered trademark) (trade name)" manufactured by Ishizuka Glass Co., Ltd.
Further, various commercially available antibacterial agents manufactured by Fuji Chemical Co., Ltd. can be used as the inorganic particles in the present invention. Further, if it is a "Bactekiller (registered trademark) masterbatch (trade name)" in which various antibacterial agents manufactured by Fuji Chemical Co., Ltd. are dispersed in polyester or polyamide at a high concentration, the present invention contains the inorganic particles in the present invention. The friction-proof composite fiber of the above can be easily obtained.

The friction-melt composite fiber of the present invention becomes a fiber having antibacterial and deodorant properties by containing such inorganic particles in the present invention in the sea component.

Next, the cross-sectional shape of the friction-proof composite fiber of the present invention will be described.
The friction-proof composite fiber of the present invention is a sea-island type composite fiber composed of the above-mentioned sea component and an island component. In the present invention, the sea-island type composite fiber is a fiber obtained by combining one or more island components and one or more sea components.
1 to 4 are examples of the shape of the cut surface perpendicular to the longitudinal direction of the friction-proof composite fiber of the present invention.
1 and 3 are cross sections of a sea-island type composite fiber having 1 sea component and 1 island component.
2 and 4 are cross sections of a sea-island type composite fiber having 1 sea component and 19 island components. The island components of the sea-island type composite fiber shown in FIGS. 2 and 4 are 1 in the center, 6 in which the outer circumference of the central island component is evenly surrounded by one example, and 12 in which the outer circumference is evenly surrounded in a row. A total of 19 pieces are distributed.
The number of sea components and island components of the sea-island type composite fiber in the present invention is not particularly limited as long as it is 1 or more. More preferably, 19 islands or less is most preferable.
As a preferable ratio (cross-sectional area ratio) between the sea component and the island component, when only a low melting point resin is used for the island component, the island component: sea component ratio is preferably 5:95 to 50:50, which is more preferable. Is from 10:90 to 30:70. When a sea-island type alloy resin is used as the island component, the island component: sea component ratio is preferably in the range of 20:80 to 70:30, and more preferably 30:70 to 50:50. Within this range, the spinnability is good and the effect of the present invention can be easily achieved.

Next, a suitable example of a method for producing a friction-proof composite fiber will be described.
First, polyester pellets or polyamide pellets, inorganic particles in the present invention, low melting point resin pellets and the like are prepared.

Next, when the core component is a sea-island type alloy resin, the sea-island type alloy resin is manufactured.
Specifically, after premixing the polyester pellets or polyamide pellets with the low melting point resin pellets, the melt composite kneading is performed at a temperature of 10 to 40 ° C. higher than the melting point of the polyester or polyamide in a twin-screw extrusion kneader. , A sea-island type alloy resin can be obtained. At this time, the mixing ratio of the polyester or polyamide pellets and the low melting point resin pellets is preferably in the range of 95: 5 to 55:45 (mass ratio). More preferably, it is in the range of 90:10 to 70:30 (mass ratio). When producing a sea-island type alloy resin, it is preferable to use a compatibilizer in combination for the purpose of stabilizing the morphology of the sea-island type alloy resin, and when the pellets are mixed, 0.1 to 10 mass with respect to the entire resin pellets. It is preferable to add and use about%, and a more preferable amount of addition is 0.2 to 5% by mass.

Next, when the resin composition containing the inorganic particles of the present invention is previously subjected to spinning as the sea component, the resin composition containing the inorganic particles of the present invention is prepared as the base resin of the sea component. Specifically, the base resin constituting the sea component is supplied from the first feed port of the twin-screw extruder and kneader, and the inorganic particles in the present invention are adjusted to a predetermined ratio by using a side feeder to the melted portion. A method of obtaining a resin composition by supplying it from the second feed port and compounding it, a twin-screw extruder or a single-screw extruder in which a base resin of sea components is powdered in advance and a predetermined amount of inorganic particles are premixed. It can be produced and obtained by a method such as a method of obtaining a resin composition by melting and mixing with. In addition, a masterbatch in which various commercially available antibacterial agents are dispersed in polyester or polyamide at a high concentration (for example, "Bactekiller (registered trademark) masterbatch (trade name)" manufactured by Fuji Chemical Co., Ltd.) is diluted and mixed with the base resin. It can also be used as a resin composition.

A resin composition containing a low melting point resin or a sea island type alloy resin and the inorganic particles in the present invention is melted by an extruder, and the low melting point resin or the sea island type alloy resin is applied to the island in a so-called spin pack. The resin composition containing the inorganic particles in the present invention is matched to the shape of the sea portion and discharged from the spinneret. The discharged yarn can be stretched as desired to obtain the friction-proof composite fiber of the present invention. The fiber may be produced by blending the resin constituting the sea component and the inorganic particles of the present invention at the time of spinning without using the resin composition containing the inorganic particles of the present invention in the sea portion.
As the spinning and drawing method, (1) a conventional method in which the discharged yarn is once wound as an undrawn yarn and then drawn by a drawing machine to obtain a drawn yarn, and (2) the discharged yarn is once. Spin-draw method in which the yarn is wound while being drawn between the first roller and the second roller without winding. (3) The discharged yarn is wound as a partially drawn yarn at about 3000 to 4500 m / min. The POY-DTY method of stretching and false twisting with a false twisting machine can be appropriately selected.

The fiber cross-sectional area ratio of the sea component and the island component (the area ratio of the surface perpendicular to the longitudinal direction) is the ratio of the island component: the sea component from the viewpoint of improving the spinnability when the sea island type alloy resin is used. However, it is preferably in the range of 20:80 to 70:30, and more preferably 30:70 to 50:50. When only the low melting point resin is used as the island component, the ratio of the island component: the sea component is preferably in the range of 5:95 to 50:50, more preferably 10:90 to 30:70.

The friction-proof composite fiber of the present invention thus obtained can be partially or wholly used for knitting and weaving to obtain a fabric.

From the viewpoint of friction-proof and antibacterial deodorant properties, the fabric of the present invention preferably contains the friction-proof composite fiber of the present invention in an amount of 20% by mass or more, more preferably 33% by mass or more, still more preferably 50% by mass. %, And most preferably the whole amount is used.

Suitable examples of the form of the fabric of the present invention include fiber structures such as woven fabrics, knitted fabrics, and non-woven fabrics.
As the structure of the woven fabric, plain weave, satin weave and the like are preferably mentioned, and as the structure of the knitted fabric, circular knitting (weft knitting), tricot (warp knitting) and the like are preferably mentioned.

The fabric containing the friction-proof composite fiber of the present invention has excellent friction-proof properties and antibacterial deodorant properties, and is therefore suitable for clothing such as jerseys, volleyball and handball game shirts, and sports warm wear. Can be used for.

Hereinafter, the present invention will be specifically described with reference to examples. The present invention is not limited to the examples described below.

The method for measuring the viscosity of the resin was as follows.
(Measuring method of ultimate viscosity [IV])
A predetermined amount of polyester was dissolved in a mixed solvent of phenol / 1,1,2,2-tetrachloroethane = 60/40 (mass ratio), and the temperature was set to 20 ° C. using an Ubbelohde viscometer. It was measured by a conventional method with a viscosity measuring device SS-270LC.

(Measurement method of relative viscosity [ηr])
A predetermined amount of polyamide was dissolved in 96% by mass of sulfuric acid, and the viscosity was measured by a conventional method using an automatic viscosity measuring device SS-270LC manufactured by Shibayama Kagaku Kikai Seisakusho Co., Ltd., which was set at 20 ° C. using a Ubbelohde viscometer.

The evaluation method in the present invention is as follows.
A) Friction-proof fiber is knitted with a 24-gauge knitting machine using Eiko Sangyo's tube knitting machine model number: NCR-EW, and two fabrics are overlapped to form a rotor type friction melting tester conforming to JIS L1056 (B method). The friction-proof property used was evaluated. The state of the cloth after pressing the cloth against the rotor for 10 seconds was classified in the following four stages.
⊚: Almost no change ○: Scratch marks are observed △: Partially melted ×: Perforated due to melting B) Antibacterial and deodorant The obtained fiber is a test piece. Then, the test was conducted in accordance with the bacterial solution absorption method of JIS L1902-2015 "Antibacterial test method and antibacterial effect of textile products", and the antibacterial activity value was obtained using Annex D "Quantitative method by luminescence measurement method". rice field. When the antibacterial activity value after culturing for 18 hours was 2.2 or more, it was classified as ◯ and judged to have antibacterial and deodorant properties. When the antibacterial activity value after culturing for 18 hours was less than 2.2, it was classified as x, and it was judged that there was no antibacterial deodorant property.

[ Reference Example 1]
As an island component, high-density polyethylene (HDPE) having an MFR of 7 g / 10 min was mixed with a homopolyester having an IV of 0.67 at a ratio of 80:20, and further compatible with 0.3% by mass with respect to the mixed pellets. A mixture of the agent (Sumitomo Chemical's Bond First (trade name)) was melt-kneaded in a twin-screw extrusion kneader set at a temperature of 280 ° C to make a homopolyester with an IV of 0.67 as a sea component. The ratio of sea component and island component was made by melting and kneading Novalon (registered trademark) AG300 (trade name) manufactured by Toa Synthetic Co., Ltd. with a twin-screw extrusion kneader whose temperature was set to 280 ° C so that the ratio was 1% by mass. At a (area ratio) of 50:50, spinning was performed by a spin draw method at a spinning speed of 3800 m / min so as to have the cross-sectional shape of FIG. 1 (number of sea components: 1, number of island components: 1), and 84 dtex. A composite fiber of / 24f was obtained.
When the friction-proof property was evaluated using the obtained fibers, there were almost no scratch marks, and the judgment was ⊚. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.4, and it was determined that the antibacterial and deodorant properties were obtained.

[Example 2]
High-density polyethylene (HDPE) with an MFR of 7 g / 10 minutes was used as the island component, and a homopolyester with an IV of 0.67 and a soluble glass-based antibacterial agent manufactured by Fuji Chemical were combined with 20% by mass polyester as a sea component. Using a bacteceller masterbatch mixed with chips at a ratio of 95: 5, and using a base with 19 islands as shown in Fig. 4, the ratio (area ratio) of the sea component to the island component is 90:10. Spinning was carried out by a spin draw method at a spinning speed of 3800 m / min to obtain a sea-island type composite fiber having 84 dtex / 24 f.
When the friction-proof property was evaluated using the obtained fiber, a slight scratch mark was observed, and the judgment was 〇. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.3, and it was determined that the antibacterial and deodorant properties were obtained.

[ Reference Example 3]
As an island component, linear low density polyethylene (LLDPE) with an MFR of 5 g / 10 minutes is used, and as a sea component, a polyamide 6 having 2.7 ηr containing 2% by mass of Zeomic (registered trademark) of Sinanen Zeomic. Is spun by the spin draw method at a spinning speed of 4200 m / min using a base having an island number of 1 as shown in FIG. 3 so that the island component: sea component ratio is 25:75, and 84 dtex / A composite fiber of 24f was obtained.
When the friction-proof property was evaluated using the obtained fibers, some scratch marks were observed, and the judgment was ◯. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.5, and it was determined that the antibacterial and deodorant properties were obtained.

[ Reference Example 4]
As an island component, low-density polyethylene (LDPE) with an MFR of 7 g / 10 min and homopolyester with an IV of 0.67 are mixed at a ratio of 2: 8, and the total amount of LDPE and homopolyester as a compatibilizer. Using a resin composition in which 0.3% by mass of a compatibilizer (Bond First (trade name) manufactured by Sumitomo Chemical Co., Ltd.) was added and mixed in pellets and melt-kneaded in a twin-screw extrusion kneader set at a temperature of 280 ° C. As a sea component, the temperature of Novalon (registered trademark) AG300 (trade name) manufactured by Toa Synthetic Co., Ltd. was set to 280 ° C. so as to be 1% by mass in the homopolyester having IV of 0.67 used in Example 1. Using a resin composition melt-kneaded with a shaft extrusion kneader, using a base with 19 islands as shown in FIG. 2 so that the ratio (area ratio) of the sea component to the island component is 40:60. Spinning was performed by a spin draw method at a spinning speed of 3800 m / min to obtain a sea-island type composite fiber of 84 dtex / 24 f.
When the friction-proof property was evaluated using the obtained fibers, there were almost no scratch marks, and the judgment was ⊚. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.4, and it was determined that the antibacterial and deodorant properties were obtained.

[ Reference Example 5]
As an island component, high-density polyethylene (HDPE) having an MFR of 7 g / 10 min was mixed with polyamide 6 having a ηr of 2.7 at a ratio of 80:20, and a compatibilizer of 0.3% by mass with respect to the mixed pellets. (Sumitomo Chemical's Bond First (trade name)) was further mixed and melt-kneaded in a twin-screw extrusion kneader set at a temperature of 250 ° C. As a sea component, a homopolyester with an IV of 0.67 was added to Toa. Using a twin-screw extrusion kneader in which the temperature of Novalon (registered trademark) AG300 (trade name) manufactured by Synthetic Co., Ltd. was set to 280 ° C. so that the ratio was 1% by mass, the ratio of sea component and island component was used. Spinned by a spin draw method at a spinning speed of 4000 m / min so as to have the cross-sectional shape of FIG. 1 (number of sea components: 1, number of island components: 1) at 50:50 (area ratio), and 84 dtex / min. A 24f composite fiber was obtained.
When the friction-proof property was evaluated using the obtained fibers, there were almost no scratch marks, and the judgment was ⊚. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.4, and it was determined that the antibacterial and deodorant properties were obtained.

[Comparative Example 1]
The homopolyester having an IV of 0.67 used in Example 1 was independently spun by a spin draw method to obtain a round cross-section fiber of 84 dtex / 24 f.
When the friction-proof property was evaluated using the obtained fiber, the hole was completely opened and the judgment was x. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 0.5, and it was determined that there was no antibacterial and deodorant properties.

[Comparative Example 2]
Homopolyester with IV of 0.67 was used as the island component, and Novalon (registered trademark) AG300 (trade name) manufactured by Toagosei Co., Ltd. was added to the homopolyester with IV of 0.67 as the sea component as in Example 1. Using a twin-screw extrusion kneader whose temperature was set to 280 ° C. so as to have a mass% ratio, the melt-kneaded product was used, and the spinning speed was 3800 m / min at a ratio (area ratio) of 50:50 between the island component and the sea component. By spinning by the spin draw method, a composite fiber of 84 dtex / 24f having a cross section of 1 island and 1 sea as shown in FIG. 1 was obtained.
When the friction-proof property was evaluated using the obtained fiber, a hole was easily formed and the judgment was x. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.4, and it was determined that the antibacterial and deodorant properties were obtained.

[Comparative Example 3]
An 84dtex / 24f sea-island type composite fiber was obtained in the same manner as in Example 1 except that Novalon (registered trademark) AG300 manufactured by Toagosei Co., Ltd. was not used as the sea component. When the friction-proof property was evaluated using the obtained fibers, there were almost no scratch marks, and the judgment was ⊚. When the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 0.5, and it was determined that there was no antibacterial and deodorant properties.

[Comparative Example 4]
Homopolyester with IV of 0.67 was used as the island component, and the composite fiber was spun in the same manner as in Example 3 except that the ratio (area ratio) of the sea component to the island component was 50:50. Got
When the friction-proof property was evaluated using the obtained fiber, the hole was completely opened and the judgment was x. Further, when the antibacterial and deodorant properties were evaluated, the antibacterial activity value was 2.5, which was a judgment of 〇.

[Comparative Example 5]
As the sea component, the homopolyester having an IV of 0.67 used in Example 1 was used, and as the island component, 80 was a homopolyester having an IV of 0.67 and HDPE having an MFR of 7 g / 10 min as in Example 1. Mix at 20 and make a compatibilizer (Bond First (trade name) manufactured by Sumitomo Chemical Co., Ltd.) and Novalon (registered trademark) AG300 (registered trademark) manufactured by Toa Synthetic Co., Ltd. so that the ratio is 0.3% by mass with respect to the mixed pellets. Name) was mixed so as to have a ratio of 1% by mass, melt-kneaded with a twin-screw extrusion kneader set at a temperature of 280 ° C., and then spun in the same manner as in Example 1 to 84dtex / 24f. A composite fiber was obtained.
When the friction-proof property was evaluated using the obtained fiber, there were almost no scratch marks and the judgment was ◎, but when the antibacterial deodorant property was evaluated, the antibacterial activity value was 0.5 and the antibacterial deodorant property. Was not recognized.

Table 1 shows the fibers and evaluations obtained from Examples , Reference Examples and Comparative Examples.

As described above, all of the examples were fibers having both antibacterial deodorant property and anti-friction property.

It is possible to use composite fibers that are friction-proof clothing and are suitable for sports applications having antibacterial and deodorant functions.

1 Sea component 2, 3 Island component

Claims (5)

The island component is a sea-island type composite fiber composed of a resin containing a resin having a melting point of 30 ° C. or higher than the resin constituting the sea component, and the sea component is silver ion, zinc ion and A friction-proof composite fiber having an antibacterial and deodorant function, which contains water-soluble glass as inorganic particles that emit one or more ions selected from the group of copper ions. The antibacterial and deodorant function according to claim 1 , wherein the sea component is made of polyester or polyamide, and the island component contains one or more resins selected from the group of high density polyethylene, low density polyethylene and linear low density polyethylene. Friction-proof composite fiber with. From marine and island phases, the island component comprises at least one resin of polyester or polyamide and one or more resins selected from the group of high density polyethylene, low density polyethylene and linear low density polyethylene. The anti-friction composite fiber having the antibacterial and deodorant function according to claim 1 or 2 , which is a sea-island type alloy resin. A cloth containing 20% by mass or more of a friction-proof composite fiber having an antibacterial and deodorant function according to any one of claims 1 to 3 . Clothing containing the fabric according to claim 4 .

Images