JPH05311502A - Rapidly drying swimming suit - Google Patents

Abstract

PURPOSE:To obtain the subject swimming suit subjected to water repelling treatment, having rapidly drying properties, containing a specific amount of yarn of melt complex spinning, having a sheath-core structure comprising a kneaded composition composed of powder of carbide of a specific transition metal and a thermoplastic synthetic linear polymer as the core and a thermoplastic synthetic linear polymer as the sheath. CONSTITUTION:Powder of carbide of a transition metal belonging to the group IV of the periodic table such as titanium carbide, zirconium carbide or hafnium carbide is blended with a thermoplastic synthetic linear polymer such as nylon 6, kneaded in a molten state by a twin-screw extruder, extruded into water and pelletized. Melt complex spinning is carried out by using the pelletized kneaded composition as a core and a thermoplastic synthetic linear polymer such as nylon 6 as a sheath to give conjugate filament yarn having a sheath-core structure. Then this sheath-core conjugate filament yarn and spandex yarn are knitted to give fabric containing >=30% melt complex spinning yarn of sheath-core structure, which is dyed, subjected to water repellent treatment with a fluorine-based water repellent. The fabric is sewed into a swimming suit to give the objective rapidly drying swimming suit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swimsuit having a quick-drying property.

[0002]

2. Description of the Related Art Conventionally, polyamide fibers and polyester fibers have been widely used as materials for swimming. Polyamide fibers and polyester fibers are hydrophobic and dry faster than hydrophilic fibers such as cotton. However, because of energy loss in the body when wet, swimsuits that dry faster are required for health reasons. ing.

Also, in physical education classes at school, swimming is performed in June and September, which are before and after midsummer, and it is painful for a student to stay wet for a long time.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a swimsuit which dries faster than conventional ones.

[0005]

The present inventor has found that the periodic law IV
Focusing on the fact that a kneaded composition of a carbide powder of a transition metal belonging to the group and a thermoplastic synthetic linear polymer converts sunlight into heat, this heat is used for drying energy, and the water The inventors have found that a quick-drying swimsuit can be obtained by reducing the water content, and arrived at the present invention.

That is, according to the present invention, a kneaded composition of a carbide powder of a transition metal belonging to Group IV of the periodic table and a thermoplastic synthetic linear polymer is used as a core, and a thermoplastic synthetic linear polymer is used as a sheath. A gist is a quick-drying swimsuit made of a water-repellent cloth containing 30% or more of a melt-spun composite fiber having a sheath structure.

The present invention will be described in detail below.

In the present invention, carbides of transition metals belonging to Group IV of the periodic law mean TiC, ZrC, HfC, etc., and these substances selectively select sunlight in the wavelength range of 0.3 to 2.0 μm. Absorbs significantly in the wavelength range of 2.0 μm or more (infrared region)
Has a property that the emissivity of heat is small (the reflectance is large). Therefore, these substances absorb energy in the wavelength (light) region of 0.3 to 2.0 μm and release energy in the wavelength (heat) region of 2.0 μm or more.

The carbide of the transition metal belonging to Group IV of the periodic table of the present invention is used as a fine powder. Fine powder diameter is 1
It is preferably 5 μm or less, and particularly preferably 1 μm or less. If the particles are too large, when they are contained in the fiber to be described later, problems such as clogging of the filter medium and yarn breakage in the yarn making process occur, which is not preferable.

Further, as the thermoplastic synthetic linear polymer,
Acrylic or polyamide such as nylon 6, nylon 66, nylon 610, nylon 11 or nylon 12,
It is selected from polyesters such as polyethylene terephthalate and polybutylene terephthalate, and olefins such as polyethylene and polypropylene. Particularly, polyamides such as nylon 6 and nylon 66, or polyesters such as polyethylene terephthalate are effectively used.

A kneading composition of a fine powder of a transition metal carbide belonging to Group IV of the periodic table and a thermoplastic synthetic linear polymer is formed by a conventional method in which the fine powder is added to and mixed with a polymer in a molten state. be able to. In this case, the addition rate of the fine carbide powder to the polymer component is preferably 0.1 to 20.0% by weight, and more preferably 0.3 to 10.0% by weight. If the addition rate is less than 0.1% by weight, sunlight cannot be sufficiently absorbed, and if it exceeds 20.0% by weight, the fluidity of the polymer decreases and the spinnability deteriorates, which is not desirable. .

Using a kneaded composition of a fine powder of a carbide of a transition metal belonging to Group IV of the periodic law and a thermoplastic synthetic linear polymer as a core,
The fibers having a core-sheath structure are composite-spun so that the thermoplastic synthetic linear polymer serves as a sheath to produce the fibers used in the swimsuit of the present invention. By adopting such a core-sheath structure, it is possible to prevent the fine particles of carbide in the fibers from damaging the rollers or guides of the spinning machine or the knitting machine by friction during the production of the fibers or the production of the woven or knitted fabric, and the swimsuit. The feeling and wearing feeling when it is set to be excellent.

The core-sheath structure composite spun fiber is singly knitted or woven or woven with other yarns alone or after being mixed with other fibers if necessary, drawn and false twisted. In this case, it is desirable that the woven or knitted fabric contains 30% or more of the core-sheath structure composite spun fiber. When the core-sheath structure composite spun fiber is 30% or less, sufficient quick-drying property cannot be obtained. Other fibers mixed with the core-sheath structure composite spun fiber include synthetic fibers made of the above-mentioned thermoplastic synthetic linear polymer and natural fibers such as cotton and hemp,
There are chemical fibers such as rayon and spandex fibers, which can be used in appropriate combination.

The cloth used in the swimwear of the present invention is required to have a water repellent attached to the fibers constituting the cloth. As a water repellent, a fluorine-based water repellent containing polytetrafluoroethylene or perfluorooctyl acrylate as a main component, a silicon water repellent containing dimethylpolysiloxane or methylhydroxysiloxane as a main component, and stearamidomethylpyridinium Pyridinium salt-based water repellents such as muchloride and octadecyloxymethylpyridinium chloride and ethyleneurea-based water repellents can be used.

In order to attach the water repellent to the fiber, the water repellent may be applied in the state of the fiber, the state of the yarn or the state of the woven or knitted material, and the known padding method, spray method and dipping method can be used. .

The amount of the water repellent attached depends on the type of thermoplastic synthetic linear polymer, the type of woven or knitted fabric and the type of water repellent, but is preferably 0.05 to 10% relative to the fiber weight. When the amount of the water-repellent agent attached is 0.05% or less, it is difficult to obtain a good quick-drying property, and even if the amount exceeds 10%, the effect of the present invention cannot be expected to be improved, which is uneconomical.

The design of the swimwear of the present invention is not particularly limited,
Also, various hues, printed products, etc. can be used. To sew a swimsuit, cut and sew according to the usual methods.

[0018]

EXAMPLES The present invention will be described in more detail with reference to the examples below. The performances in the examples were measured and evaluated by the following methods. (1) Quick drying After immersing the sample in distilled water and adjusting the water content to 100% with filter paper, the light (Matsushita Electric Co., Ltd.) was placed at a distance of 80 cm in an artificial weather room at a temperature of 20 ° C and a relative humidity of 60%. , Reflex lamp, type PRF500WB) was irradiated to measure the change in the fabric weight (moisture content). It indicates that the faster the moisture content decreases, the better the quick drying property.

Example 1 ZrC powder having a particle size of μm was mixed with nylon 6 at an addition rate of 2% by weight, melt-kneaded with a twin-screw extruder, and then extruded into water to obtain pellets. Using the pelletized kneading composition and nylon 6, a composite filament yarn having a core-sheath structure of 50 denier / 16 filaments having a core of the kneading composition and a sheath of nylon 6 was produced by an ordinary composite spinning method.

A tricot was knitted with the obtained composite filament yarn and spandex fiber 40 denier / 1 filament (mixing ratio; core-sheath structure composite filament yarn 80%,
Spandex fiber 20%), then Suminol Brilliant Red S-3B (Sumitomo Chemical Co., Ltd., acid dye) dyed pink with 0.05% owf, and Asahi Guard AG710 (Asahi Glass Co., Ltd., fluorine Water-repellent treatment was performed by adding 2% of the water-repellent agent to the fiber weight by the padding method. A swimsuit for girls (one-piece type, size M, weight 110 g) was sewn using the obtained tricot.

For comparison with the present invention, a water-repellent treatment was omitted in this example, and a swimsuit for comparison (Comparative Example 1) was obtained in the same manner as in this example except for the above. Further, for comparison with the present invention, in the present embodiment, a normal nylon 6 filament yarn 50 denier / 16 was used in place of the core-sheath structure composite yarn.
A swimsuit for comparison (Comparative Example 2) was obtained in the same manner as in this example except that filaments were used.

The quick-drying performances of the present invention and the swimwear for comparison were measured, and the results are shown in Table 1.

[Table 1]

As is clear from Table 1, the swimsuit of the present invention has a faster rate of decrease in water content and an excellent quick-drying property as compared with the swimsuit of the comparative example (conventional product).

Example 2 5 parts by weight of ZrC fine particles having a particle size of 0.7 μm and 95 parts by weight of polyethylene terephthalate having an intrinsic viscosity of 0.8 were uniformly melt-mixed to prepare a carbide mixture composition. This carbide mixed composition and polyethylene terephthalate having an intrinsic viscosity of 0.8 are
The former was the core and the latter was the sheath at a weight ratio of 50:50, so that the core-sheath composite filament yarn 50 denier / 24 filament was obtained.

The core-sheath structure composite filament yarn was false twisted to obtain a crimped yarn, and then a knit fabric was knitted with a 22G circular knitting machine. The resulting knit fabric was scoured and Dyanix Blue U-SE (manufactured by Mitsubishi Kasei Co., Ltd., disperse dye)
After dyeing (light green) with 0.5 owf, Scotchguard FC217 (Sumitomo 3M Co., Ltd., a fluorine-based water repellent) was added to the fiber weight at 3%, and water repellent treatment was performed. A swimsuit for girls (one-piece type, size M, weight 180 g) was sewn on the obtained knit fabric.

For comparison with the present invention, a swimsuit for comparison (Comparative Example 3) was obtained in the same manner as in this Example, except that the water repellent treatment was not performed in this Example. Further, for comparison with the present invention, a comparison was made in the same manner as in this example except that a normal polyethylene terephthalate filament yarn 50 denier / 24 filament was used in place of the core-sheath structure composite yarn in this example. A swimsuit (Comparative Example 4) was obtained.

The quick-drying performances of the present invention and comparative swimwear were measured, and the results are also shown in Table 2.

[Table 2]

As is clear from Table 2, the swimwear of the present invention has a faster water content reduction rate and an excellent quick-drying property as compared with the swimwear of the comparative example (conventional product).

[0029]

[Operation] As in the present invention, when a carbide powder of a transition metal belonging to Group IV of the periodic law is kneaded into a fiber and used, and this is combined with a water repellent treatment, the water content of the fiber of the swimsuit decreases and Due to the heat energy generated by the solar heat conversion ability of the transition metal carbide powder, it becomes possible to evaporate this small amount of water, and the quick drying property is exhibited.

[0030]

According to the present invention, a swimsuit excellent in quick-drying can be obtained.

Claims (1)

[Claims] 1. A core-sheath structure in which a kneaded composition of a carbide powder of a transition metal belonging to Group IV of the periodic table and a thermoplastic synthetic linear polymer is used as a core and the thermoplastic synthetic linear polymer is used as a sheath. A quick-drying swimsuit made of water-repellent cloth containing 30% or more of composite spun fibers.