JP2563829B2 - Luminous fiber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a luminescent fiber in which chemical fiber is provided with luminescent property.

<Explanation of Terms> The term “chemical fiber” used in the description of the present invention means (a) a synthetic material produced from a chemically synthesized substance using petroleum as a raw material such as polyester and polypropylene. Fiber (b) For example, rayon, such as rayon, is a recycled fiber that is made by reusing the fibrin contained in wood and cotton printers once as a raw material, and then (c) For example, acetate. Semi-synthetic fibers made from natural chemicals such as cellulose and protein with chemicals acting as raw materials, (d) For example, inorganic fibers made from inorganic substances such as glass, (i) to (d) above It is used as an all-inclusive meaning.

In addition, the term “fiber” includes not only fine fibers but also thick strings.

<Prior Art> Conventionally, a technique of mixing a phosphorescent pigment into a raw material of a synthetic fiber and molding the raw material by a conventional method to produce a synthetic fiber having a luminescent property is generally known.

When the above-mentioned conventional luminescent fiber is irradiated with light from the outside, this light is stored and emits light, but this light is emitted only by the action of the phosphorescent pigment in the fiber. Therefore, the conventional luminescent fiber has a problem that the brightness of the emitted light is small. Especially at night, there is almost no light.

By the way, it seems that the magnitude of the brightness of light can be changed depending on the content ratio of the phosphorescent pigment in the raw material of the product. However, even if the amount of the phosphorescent pigment mixed in is increased, there is a limit to the brightness that can be increased, and if the ratio of the pigment in the raw material is too large, the quality of the synthetic fiber deteriorates.

Further, conventionally, hollow synthetic fibers having cavities in the fibers have also been developed. It is known that this hollow fiber is lighter than it looks, has a good heat insulating effect, and has a good feel, and is used for clothes, blankets, and cotton fluff.

However, the conventional hollow fiber was developed for the purpose of giving the above-mentioned action to the fiber, and there was no hollow fiber having a light emitting property.

<Problems to be Solved by the Invention> The present invention has been made in view of the above circumstances, and provides a luminescent fiber capable of significantly increasing the brightness of the emitted light without changing the ratio of the raw material for the chemical fiber product. It is intended to be provided.

<Means for Solving the Problems> In the present invention, it has been found that the brightness of light is significantly increased as compared with a solid (non-hollow) fiber by making a hollow in the fiber to make it hollow. The present invention has been completed.

That is, the first invention of the present application is a hollow chemical fiber having a cavity toward the axial direction, and the chemical fiber is a product raw material obtained by mixing a desired basic raw material with an appropriate amount of a phosphorescent pigment. It is characterized by being molded by the method.

A second invention of the present application is characterized in that, in the above-mentioned first invention, the product raw material is obtained by mixing a basic raw material with an appropriate amount of a phosphorescent pigment and an aluminum-based metal powder.

<Operation> When the luminescent fiber of the present invention is irradiated with light from the outside, this light is stored in the phosphorescent pigment contained in the fiber and emits light, but the brightness of this light is enhanced by the function of the cavity. , Luminous intensity is greatly increased. This was discovered by chance in an experiment, but it is considered that the reason why the brightness is increased by molding the fiber into a hollow is as follows. That is, when the phosphorescent pigment emits light, this light is subjected to refraction or the like in the cavity and diffusely reflected, which is considered to cause the enhancement of the emission brightness.

Further, in the second invention, the brightness of the light emitted from the phosphorescent pigment is further enhanced by the aluminum-based metal powder contained in the fiber. Therefore, the brightness is the first
The invention is further increased. This was also discovered through experiments, but it is thought that this increase in luminescence is due to irregular reflection of light by the aluminum-based metal powder.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. 1 to 4 are luminescent fibers showing one embodiment of the present invention. The chemical fiber 1 is formed in a hollow pipe shape having a cavity 2 oriented in the axial direction. The above chemical fiber is
For example, polyester, polypropylene, rayon or other desired basic material is mixed with a phosphorescent pigment to obtain a raw material for a product, which is molded by a conventional method to form a fiber having a desired diameter.

The type of the basic raw material of the fiber 1 and the diameter of the fiber, from ultrafine to large diameter, are arbitrarily determined according to the application and the like.

Further, as the above-mentioned phosphorescent pigment, a commercially available pigment is freely selected and adopted.

The specific manufacturing may be performed as follows, for example. That is, as shown in FIG. 7, an appropriate amount of the phosphorescent pigment (powder) B is added to the desired basic raw material (powder) A.
Is mixed as shown in FIG. 6C (at this time, an appropriate amount of antioxidant is also mixed if desired), and this is mixed with stirring as shown in FIG. . This product material C is molded into a chemical fiber 1 by a known molding machine by a conventional method.

The blending ratio of the pigment B to the raw material A in the product raw material C is 100: 50 to 30 in weight ratio, and can be freely selected according to its application.

The luminescent fiber of this example is configured as described above,
The luminescent fiber is widely applied without limitation, for example, by weaving as shown in FIG. 3 to manufacture a woven fabric a, or twisting as shown in FIG. 4 to manufacture a rope b. It is possible.

FIG. 5 shows another embodiment of the present invention. The fiber 1 of the above-mentioned embodiment has a circular cross-sectional shape, but in this embodiment, the cross-sectional shape of the chemical fiber 1 formed hollow by providing the cavity 2 in the axial direction is different, that is, the fiber. 1 is formed into a substantially triangular shape, and a convex strip 3 is formed at each corner to form a modified cross section. Other configurations, uses, and the like are exactly the same as those in the above-described embodiment.

In addition, the cross-sectional shape of the fiber 1 may be arbitrarily changed to a pentagonal shape, a star shape, or the like.

This embodiment is configured as described above, and if the cross-sectional shape of the fiber 1 is formed in a different shape as in this embodiment, there is a characteristic irregular firing action due to this shape. Therefore, the light emission brightness of the light of the light-accumulating pigment is further increased as compared with that having a circular cross-sectional shape.

FIG. 6 is a luminescent fiber showing one embodiment of another invention of the present application. For simplification of description, the same components as those in the embodiment of FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. In this example, a phosphorescent pigment and an aluminum-based metal powder were mixed into a desired basic raw material to obtain a product raw material, which was formed by a conventional method to obtain a chemical fiber 1 having a desired diameter. The aluminum-based metal powder 4 is scattered throughout.

As the above-mentioned aluminum-based metal powder, an aluminum foil pulverized by an appropriate means to be powder, an aluminum metal similarly pulverized, or the like is adopted. Other configurations, uses, and the like are exactly the same as those of the embodiment shown in FIG.

The specific production of the fiber of the embodiment shown in FIG. 6 may be carried out as follows, for example. That is, the eighth
As shown in the figure, the desired basic raw material (powder) A is mixed with an appropriate amount of the phosphorescent pigment (powder) B and the aluminum-based metal (powder) D as shown in the same figure (D) (at this time, if desired. An appropriate amount of antioxidant is also mixed in), and this is mixed with stirring as shown in FIG. This product raw material E is molded into a chemical fiber 1 by a conventional method in the same manner as above.

The mixing ratio of the powders B and D to the basic raw material A in the product raw material E can be arbitrarily selected. For example, as an example, the ratio of the powders A, B and D is 100: 50 by weight. An example can be given as 10. However, this ratio can be arbitrarily changed according to the type and use of the fiber.

Also in the case of this embodiment, the cross-sectional shape of the fiber 1 may be formed in an irregular shape such as a polygonal shape as in the embodiment of FIG.

<Effects of the Invention> According to the present invention, it is possible to greatly increase the emission brightness of a fiber molded by a conventional method without changing the mixing ratio of the phosphorescent pigment to the basic raw material of the chemical fiber as compared with a non-hollow fiber. Will be possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a luminescent fiber according to the present invention, FIG. 2 is an enlarged longitudinal sectional view of the same, and FIGS. 3 and 4 are examples of products manufactured using the same luminescent fiber. FIG. 5 is a vertical sectional view showing another embodiment of the present invention, FIG. 6 is a vertical sectional view showing one embodiment of the other invention of the present application, and FIG.
(D) and FIGS. 8 (a) to (e) are explanatory views showing the manufacturing process of the product raw material. 1 ... Synthetic fiber 2 ... Cavity A ... Basic raw material B ... Luminescent pigment D ... Aluminum metal powder C, E ... Product raw material

Claims (2)

(57) [Claims] Claim: What is claimed is: 1. A hollow chemical fiber having a cavity in the axial direction, said chemical fiber being a product raw material obtained by mixing a desired basic raw material with an appropriate amount of a light-storing pigment, and molded by a conventional method. A luminescent fiber characterized by being present. 2. A hollow chemical fiber having a cavity in the axial direction, said chemical fiber being a product raw material obtained by mixing a desired basic raw material with an appropriate amount of a phosphorescent pigment and an aluminum-based metal powder. A luminescent fiber formed by a method.