JPS60199942A - Fiber product having fluorescence - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluorescent textile product for decoration or disaster prevention. Traditionally, various disaster prevention supplies and decorations such as emergency ams and artificial flowers have been made by applying paints or adhesives containing fluorescent agents to base materials, or by molding plastics containing fluorescent agents. ing. Products made from fibers include carpets, non-woven wallpapers, etc., coated with paint containing the fluorescent agent, and the coated surface of such products is hard and smooth, with a poor texture, and the material There were disadvantages such as the characteristic of the textile product being lost and the pigment peeling off after long-term use. Attempt to make fiber by blending fluorescent agent with thermoplastic resin (% 1976-47646)
However, such resin compositions have poor spinnability and stretchability, and only thick fibers such as monofilaments can be obtained, and the final products can only be those such as ropes, braids, and nets.

As a result of intensive research to overcome the above-mentioned drawbacks of textile products having fluorescence, the present inventors have found that a first component containing a fluorescent agent and a second component that does not substantially contain a fluorescent agent are combined into a first component containing a fluorescent agent. Fiber diameter 1 arranged so that the component occupies 6 Ots or less of the fiber cross-sectional layer
The present invention was completed after learning that the desired objective could be achieved by using a composite fluorescent fiber with a diameter of 50 μm or less.

In order to obtain textile products in the form of woven fabrics, knitted C1 nonwoven fabrics, paper, carpets, etc., the fibers that are the raw materials need to have appropriate fineness and strength. The present inventors have discovered that fibers in which a fluorescent agent is blended with a fiber-forming resin are composite fibers (hereinafter referred to as composite fibers) consisting of a first component containing a fluorescent agent and a second component that does not substantially contain a fluorescent agent. (sometimes referred to as optical fibers), the decrease in spinnability, stretchability, strength, etc. due to the addition of a fluorescent agent can be alleviated by the coexistence of the second component.
We have discovered that it is possible to obtain thin fibers with a fiber diameter of up to about 10 pm, and by using such fibers, we have obtained extremely novel textile products.

As the material resin for the composite fluorescent fiber used in the present invention, fiber-forming resins such as polyamide, polyester, polyolefin, polyvinyl alcohol, and polyvinyl chloride can be used alone or as a mixture. Both components to be combined during composite spinning may be the same resin or different resins. In particular, when a resin having a melting point 20°C or more lower than the melting point of the tree HD used in the %11 composition is used as the second component that does not substantially contain a fluorescent agent, the composite fluorescent fiber described in 4. By heat-treating at a temperature between the melting point of Fiber 1, it is possible to generate heat fusion in Fiber 1 while maintaining the fiber shape, which is useful for thermal bonding textile products.

There are no particular restrictions on the fluorescent agent blended into the first component of the composite fluorescent fiber used in the present invention, other than that it does not change in quality due to heating during spinning and that the particles are thin enough not to clog the spinning nozzle. For example, fluorescent agents made of metal sulfides or mixtures thereof such as calcium sulfide, zinc sulfide, zinc sulfide-cadmium sulfide, and phosphorescent agents made by adding an activator such as bismuth, copper or manganese to these fluorescent agents; The fluorescent agent contains radioactive qk such as tritium and tetramethium.
Examples include self-luminous fluorescent agents with added J quality. The blending amount of these fluorescent agents is adjusted depending on the use of the final product, but it is generally 10 to 40 wt % based on the entire composite fluorescent fiber due to constraints such as fluorescent strength, spinnability, and delicate physical properties. That's about it.

A pigment can be blended into the second component of the composite fluorescent fiber used in the present invention to the extent that it does not inhibit the brightness of the fluorescent light, and by blending the pigment in this way, various color tones other than that of the fluorescent agent itself can be blended. A colored composite fluorescent fiber can be obtained.

The above-mentioned first component and second component are spun into a parallel type or sheath-core type composite 41ik fiber using a conventionally known composite spinning device.
Setting conditions such as composite ratio and spinning temperature are set so as to account for less than b, and in the case of sheath core rei, #i first component is used on the core component side. The cross section of the fibers can be arbitrarily chosen such as circular, triangular, Y-shaped, hollow, etc. In the case of a sheath-core type composite, a single-core fiber or a multi-core fiber may be used. Here, the filling is limited so that the first component occupies 60 mm or less of the cross-sectional layer of the fiber, in order to prevent the fluorescent agent from falling off from the fiber surface and to prevent deterioration of the texture of the fiber. Composite fluorescent fibers can be processed into various forms of textile products by themselves or in combination with other fibers.

Processing methods include twisting yarn into textiles, knitted fabrics, carpets, ropes, braids, etc.; short fibers or long fiber webs using needle punching, stitch bonding, spunbonding, thermal bonding, and binder methods. There are no particular restrictions on the shape of the final product, and there are no particular restrictions on the shape of the final product. When composite fluorescent fibers are used in combination with other fibers, the composite fluorescent fibers do not need to be uniformly dispersed throughout the textile product, but may be concentrated and scattered in several places on the surface of the textile product. In some cases, this method is preferable because the fluorescent light emission quality is greater. Methods for dotting include embroidery using composite fluorescent fiber twisted threads, patterned carpeting or tanning methods, and methods of dotting composite fluorescent fibers entirely or partially on the surface of other textile products. & There are methods of layering.

The fluorescent fiber products of the present invention obtained in this manner do not have the fluorescent agent falling off, have the same fiber structure, surface structure, flexibility, texture, strength, etc. as general textile products, and have fluorescent properties. Compared to fiber products coated with optical paint or the like or fiber products made of thick fluorescent fibers, they have a much higher commercial value and a wider range of uses. Specific examples of the fluorescent textile products of the present invention include curtains, wallpaper, carpets, dresses, raincoats, night work clothes, hats, flags, signs, lampshades, artificial flowers, etc., and are used for decoration or disaster prevention. Widely used for

Some embodiments of the present invention will be explained below by way of examples.

Example 1 Melt 70-RE) (23CI) 8.2 (r/lo) containing 20 wt% zinc sulfide containing copper as an activator
The core component is polypropylene with a melt index of 190 υ24 (r/lo min), the sheath component is high-density polyethylene with a melt index of 190 υ24 (r/lo min), and composite spinning is performed at a composite ratio (volume ratio) of 50150 to produce a fiber with a fiber diameter of 25 μm and a fiber length of 5 am. A composite fluorescent fiber was obtained.

Conventionally known polyolefin thermoadhesive composite fiber (3) consisting of polypropylene (core) and high-density polyethylene (sheath)
d/f, 5++n length) is made using the wet method to produce paper with a basis weight of 24f/
m' (after drying) sheet, and on top of this, 3 of the sheet area
Using a mold with a bamboo leaf pattern that accounts for 0.0%, the liquid in which the composite fluorescent fibers were suspended was layered to form a 20/- composite fluorescent fiber layer, which was then dried and then heated at 145°C. After heat treatment using the calendar rule, the fabric weight is 30 f/m' and the thickness is 0.1311.
A thin nonwoven fabric of Jl was obtained.

This nonwoven fabric exhibits the same strength and texture as conventionally known nonwoven fabrics made of polyolefin heat-adhesive composite fibers,
Moreover, the patterned area glowed brightly and pale green for about 30 minutes in a dark place. This nonwoven fabric is useful for wallpaper, shoji paper, dresses, etc.

Example 2 A self-luminous fluorescent agent made by adhering tritium to zinc sulfide
vt% added melt 7o-rate (230°C)8.
2 (9710 minutes) of polypropylene (al component),
Melt index (19010) 24 (r/10 minutes)
Composite ratio (volume ratio) with high-density polyethylene (second component)
50150 in parallel type composite spinning, fiber diameter 304m%
Fiber length is 64, the ratio of the first component to the fiber cross-sectional circumference is 2
Three composite fluorescent fibers were obtained. This composite fluorescent fiber was passed through a card machine to form a web with a basis weight of 150 f/-, and then
It was heat-treated by passing it through a 2-mum dryer at 5° C. to obtain a nonwoven fabric.

The obtained non-woven fabric was a non-woven fabric (fabric weight: 150 tons) made of polypropylene fibers with a single fiber fineness of 3 deniers and made by a thermal welding method.
/m'), it has the same flexibility and strength, and shines brightly in the dark with a yellow-green color.
IIX 50CI+ cloth pieces were easily visible to the naked eye. Further, there was no dropout of the fluorescent agent at all.

Such nonwoven fabrics are useful as materials for flags and safety signs.

Example 3 Calcium sulfide containing bismuth as an activator
wt% added melt 70-rate 4.0 (9710
The first component is polypropylene 1c (minutes), and the second component is high-density polyethylene with a melt index of 24 (9710 minutes), and both components are composite spun in parallel at a composite ratio (volume ratio) of 50,150, with a fiber diameter of 25 μm and a fiber length of 64 μm.關、1st
A composite fluorescent fiber in which the component occupies 19% of the cross-sectional circumference of the fiber was obtained, and passed through a card machine to have a basis weight of 150 t/n? A maple leaf pattern patch was then created from this web by a punching method.

Fabric weight 1 made of conventionally known heat-adhesive composite fibers with polypropylene as the core component and high-density polyethylene as the sheath component.
50 f/w? Maple leaf pattern patches made of the composite fluorescent fibers are placed on the web at appropriate intervals, and 1
It was heat-treated by passing it through a 2-m dryer at 45° C. to obtain a nonwoven fabric. The obtained nonwoven fabric had the same strength and texture as a nonwoven fabric made only of heat-adhesive conjugate fibers, and the pale blue glow of the patterned portion lasted for 30 minutes in the dark. Further, no drop-off of the fluorescent substance was observed. Such nonwoven fabrics are useful for wallpaper, lampshades, and the like.

Comparative Example 1 Calcium sulfide containing bismuth as an activator
wt% added melt flow rate 21 (r/10 min)
The first component is polypropylene of A composite fluorescent fiber was obtained with a length of 64 and a ratio of the first component to the cross-sectional circumference of the fiber of 71. Using this composite fluorescent fiber, a nonwoven fabric having a pattern that emits fluorescence was produced in the same manner as in Example 3.

The patterned part of the obtained nonwoven fabric had a rough texture, the fluorescent agent was observed to come off due to friction, and the duration of the fluorescent light was a little less than 25 minutes. It was inferior.

Example 4 Zinc sulfide f containing copper as an activator: Polypropylene of melt 70-rate 7 (9710 minutes) to which 20 wt% was added was used as a core component, and melt 70-rate 10 (9710 minutes)
) with polypropylene as the sheath component, composite ratio (volume ratio)
Composite spinning with 50150 fiber diameter 52μm% fiber length 5
One piece of composite fluorescent fiber was obtained and passed through a card machine into a 517 m sliver.

Single fiber blue polypropylene fibers with a fineness of 18 denier and a fiber length of 51 dragon were passed through a carding machine to form webs with a fabric weight of 500 t/- and a fabric weight of 100 f/lt/, and between these two webs was the composite fluorescent fiber described above. The slivers were arranged in a vertical pattern with an average spacing of 50 dragons, and needle punched to form a nonwoven fabric. The obtained nonwoven fabric had the same strength and texture as the nonwoven fabric with a basis weight of 600 f/- made using only the above-mentioned polypropylene fibers by the needle punch method, and the patterned area turned pale green for about 30 minutes in a dark room. It was shining. Such nonwoven fabrics can be used in carpets.

Example 5 The core component was polypropylene with a melt 70-rate of 8.2 (r/10 min) to which 25 wt of zinc sulfide containing copper was added as an activator, and the melt 70-rate was 14.4.
Composite fluorescent fiber (long fiber) with a total fineness of 2,600 (1/100 f. Fiber) is used as a pile system together with bulky processed long fibers of green polypropylene with a total fineness of 2.6L) Od/1oof, and a pile of composite fluorescent fibers is 8.
A tufted carpet was made by tufting it to form a striped pattern 15 squares wide with 5 dragon intervals.

The obtained carpet has the same strength and texture as ordinary tufted carpet made of polypropylene fibers, and the striped pattern continues to glow pale green for about 30 minutes in a dark room, making it a perfect escape route during a power outage. It is useful for disaster prevention purposes.

that's all

Claims (4)

[Claims] (1) A first component containing a fluorescent agent and a second component that does not substantially contain a fluorescent agent are combined into a 60-
A fluorescent fiber product consisting of a composite fluorescent fiber alone or a combination of the composite fluorescent fiber and other fibers with a fiber diameter of 150 μm or less arranged in parallel mh or sheath-core type so as to occupy the following: (2) Composite fluorescent fibers are placed on textile fabrics made of other fibers in a pattern (
A textile product having fluorescent light according to claim M1, which has a pattern) woven therein. (3) A textile product having fluorescence according to claim 1, wherein a layer made of composite fluorescent fibers is laminated on a layer Q made of other fibers. (4) A textile product having fluorescence according to claim 1, wherein a layer made of a composite fluorescent fiber is laminated between layers made of other fibers.