KR100538877B1 - Luminant composite fiber with the 3-layered cross-section - Google Patents

Abstract

The present invention relates to a photoluminescent composite fiber having a fiber cross section having a concentric three-layer structure.

In other words, the cross-sectional shape consists of an outer layer, an intermediate layer and an inner layer.

The outer layer is composed of a transparent polymer having an average thickness of 20 µm or less, the intermediate layer is bisected at regular intervals, a polymer containing 10 to 50% by weight of a photoluminescent phosphor, and the inner layer is composed of a polymer having good physical properties.

The present invention is economical because it can reduce the mechanical wear due to the hardness of the photoluminescent agent, as well as the ratio of the photoluminescent material to the inner layer, and is excellent in strength.

Moreover, this invention can be manufactured favorably.

Description

Luminant composite fiber with the 3-layered cross-section}

The present invention relates to a photoluminescent composite fiber in which the cross section of the fiber has a three-layer structure.

The photoluminescent composite fiber of the present invention is widely used in buoys, life-strings, fishing ropes, carpets, fishing lines, embroidery, decorative clothing, and the like.

Background Art Conventionally, many luminescent fibers using phosphorescent pigments have been proposed.

For example, the application of a photoluminescent pigment to the surface of a textile product, and the combination of the photoluminescent pigment and synthetic resin and spinning are described in Korean Utility Model Publication No. 86-3771 and Korean Patent Application Publication No. 98-87861.

However, the coating of the coating material containing the phosphorescent pigment on the fiber material or the fixing of the phosphorescent pigment using the binder component on the fiber causes the phosphorescent pigment to be exposed to the surface, resulting in poor durability and light resistance.

In addition, in the case where the phosphorescent pigment was blended with the resin and emitted, the compounding ratio of the phosphorescent pigment had to be increased in order to obtain satisfactory photoluminescence property.

In order to prevent the photoluminescent pigment from being exposed to the surface of the fiber and to exhibit good photoluminescent properties even when a small amount of photoluminescent pigment is used, the cross-sectional structure of the fiber is three-layer structure, and the photoluminescent fluorescent agent is included in the intermediate layer. The technical task is to provide a photoluminescent composite fiber having excellent properties, reducing mechanical wear and excellent physical properties.

Hereinafter, the present invention will be described in detail.

1 is an enlarged cross-sectional view of the photoluminescent composite fiber of the present invention, in which the three-layer structure of the outer layer 1, the middle layer 2, and the inner layer 3 is concentric.

In the present invention, the polymer for the interlayer 2 containing the phosphorescent fluorescent agent is a thermoplastic thermoplastic resin that can be used, and examples thereof include polyester, polyamide, polyolefin, and polyvinyl chloride.

The particle size of the photoluminescent fluorescent agent is preferably large in terms of photoluminescence, but is too large in terms of sacrificial properties, and in the case of the photoluminescent fluorescent agent, the photoluminescent property is inferior to the original purpose of photoluminescence.

Therefore, the particle diameter is preferably in the range of 0.5 to 100 µm.

Although the compounding quantity of a photoluminescent fluorescent agent is based also on a use of a fiber, it is preferable to set it as the range of 10-50 weight% with respect to the intermediate | middle layer 2.

At this time, when the blending amount is less than 10% by weight, the luminance of the fluorescence is inferior. On the contrary, when the blending amount is more than 50% by weight, the sacrificial properties are not good.

In addition, as shown in FIG. 1, the intermediate | middle layer 2 is divided into two, The spacing (alpha) between these intermediate | middle layers and an intermediate | middle layer is 1-20 micrometers is preferable.

This further increases the economics and reduces the wear of the spinning machine, while increasing the wear resistance and strength of the fibers.

On the other hand, the polymer used for the outer layer 1 is a polymer having good transparency and spinning, and specific examples thereof include polyester, polyamide, polyolefin, polyvinyl chloride, and the like.

Moreover, the polymer used for the inner layer 3 is a good spinning property and a spinnable polymer, and specific examples thereof include polyester, polyamide, polyolefin, polyvinyl chloride, and the like.

In the present invention, the ratio of the intermediate layer / (inner layer + outer layer) is preferably 1/5 to 5/1 by weight ratio.

If the ratio of the intermediate layer is less than 1/5, the luminous properties and afterglow are inferior. On the contrary, if the ratio of the intermediate layer is greater than 5/1, the ratio of the photoluminescent fluorescent substance containing polymer is increased, so that the weaving property is poor and the strength of the fiber is lowered.

Although the thickness ratio of the inner layer 3 and the outer layer 1 varies depending on the fineness, it is preferable that the average thickness of the outer layer 1 is 20 µm or less so that light can reach the photoluminescent phosphor of the intermediate layer 2. .

When the average thickness of the outer layer 1 exceeds 20 µm, the light emission takes time and the effect of light emission is reduced.

Moreover, it is preferable that the thickness of the outer layer 1 is as thin as possible and uniform.

The composite fiber of the present invention can be manufactured with good sacrificial properties because the polymer having good sacrificial properties is disposed in the inner layer 3, and the resulting fiber has excellent strength and economically because the phosphorescent material occupies as little as the inner layer 3 occupies. to be.

In addition, since the outer layer 1 is transparent and has a small average thickness, photoluminescence and luminescence are further improved, and mechanical wear due to the hardness of the photoluminescent material can be reduced.

In addition, the composite fiber of the present invention contains the phosphorescent fluorescent agent in the intermediate layer and is not exposed to the fiber surface, so that the phosphorescent fluorescent agent has no friction with the outside, thereby improving durability and light resistance.

Hereinafter, the present invention will be described in more detail with reference to Examples.

Examples 1-3

The inner layer (3) and the outer layer (1) components were formed using the nylon of relative viscosity 3.03, and the concentric circular three-layer composite fiber was produced by the intermediate | middle layer (2) which mix | blended the photoluminescent fluorescent substance with an average particle diameter of 2.0 micrometers.

At this time, the spinning temperature was set to 290 ° C., and a composite spinning die having a nozzle hole diameter of 0.35 mm was used and cooled to obtain an unstretched filament.

The undrawn yarn was cold drawn 2.5 times to prepare 120 denier photoluminescent composite fibers.

In addition, Examples 2 and 3 were prepared by varying the ratio of the outer layer 1, the inner layer 3, and the intermediate layer 2.

The results are shown in Table 1.

Comparative Examples 1-2

Different spinning methods were used to prepare general yarns (mixed yarns) and concentric yarns (composite yarns).

The results are shown in Table 1.

<Table 1>

Photoluminescent content (%) Thickness (μm) of the outer layer 1 Compound weight ratio (inside / outside / medium) Sacrifice Strength (g / denier) Afterglow Process Wear Resistance Example One 20 5 17: 10: 3 ◎ 2.9 ◎ ◎ 2 20 10 14: 10: 6 ○ 2.6 ○ ◎ 3 14 6 10: 7: 4 ◎ 3.1 ◎ ◎ Comparative example One 40 mix △ 1.9 ○ × 2 40 10 5: 5 (mind) ○ 2.2 ○ ◎

◎: Excellent, ○: Good, △: Normal, ×: Poor

The photoluminescent composite fiber of the present invention is excellent in manufacturability, strength and brightness because the phosphorescent fluorescent agent is present in the intermediate layer of the fiber, and can minimize the mechanical wear during production and the price is low.

1 is an enlarged cross-sectional view of the photoluminescent composite fiber of the present invention.

Claims (2)

The fiber cross section has a concentric three-layer structure, wherein the outer layer 1 is a transparent fiber-forming polymer having a thickness of 20 μm or less, and the middle layer 2 is a fiber-forming compound containing 10 to 50% by weight of a phosphorescent fluorescent agent. The inner layer 3 is made of a polymer, and the inner layer 3 is a luminescent composite fiber having a three-layered cross-sectional structure, wherein the intermediate layer 2 is bisected, and the spacing α is 1 to 20 µm. A photoluminescent composite fiber having a three-layer cross-sectional structure. delete