JPH10292257A - Luminous fiber structure and safety clothes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a luminous fiber structure, capable of absorbing and storing light energy and spontaneously emitting light and suitable as a material for safety clothes by forming a coating film composed of a resin and a luminous pigment on at least one surface of a fabric. SOLUTION: This luminous fiber structure is a textile fabric material having a coating film of a resin and a luminous pigment on at least one surface thereof. The luminous fabric is obtained by coating at least one surface of the textile fabric with a coating liquid prepared by compounding at least one resin selected from the group of a urethane resin, an acrylic resin, an aminoplast resin, an olefinic resin, a silicone-based resin and a fluorine-based resin with the luminous pigment having a luminous ability of >=50 mcd/m<2> afterglow luminance so as to provide 10-100 g/m<2> , preferably 20-80 g/m<2> coating weight. The resultant luminous fabric has <=0.7 apparent area based on the actual area and >50 value of L when used in the form of at least one state of a combination of massive bending, three-dimensional bending or petal-shaped three-dimensional bending. The obtained luminous fabric is used to afford safety clothes conspicuous even at night or in the dark.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminescent fiber structure in which a luminescent property is imparted to a fiber fabric. More specifically, a luminescent fiber structure that stands out particularly at night or in a dark place.

[0002]

2. Description of the Related Art Conventional luminescent fiber structures emit light,
There was a problem that the luminance was small, and the afterglow time was extremely short, especially at night, and the light emission was rapidly attenuated when the external stimulus was stopped. In this case, the magnitude of the brightness of the light can be changed depending on the content of the luminous pigment in the product. However, even if the amount of the luminous pigment mixed is increased, there is a limit to the luminance that can be increased by this, and the fiber cloth There have been problems such as rough curing of texture, reduction in film strength, and hydrolysis of the film and the luminous pigment.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a luminescent fiber structure capable of greatly increasing the luminance of a light source that emits light without changing the content of a luminous pigment in a product. is there.

[0004]

The luminescent fiber structure of the present invention has the following structure to solve the above-mentioned problems.

That is, the present invention is a fibrous fabric having a coating of a resin and a luminous pigment on at least one surface, wherein an apparent area is 0.7 or less of an actual area and an L value is more than 50. Luminescent fiber structure.

[0006] The safety suit of the present invention has the following configuration in order to solve the above problems.

Specifically, the present invention is a fibrous fabric having a resin and a luminous pigment coating on at least one surface, wherein the apparent area is 0.7 or less of the actual area, and the L value is larger than 50. This is a safety clothing using a light emitting fiber structure.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The luminescent fiber structure of the present invention is obtained by applying an appropriate amount of a luminous pigment to a fiber cloth and having an apparent area of 0.7 or less of the actual area. The apparent area means the area when projected on the projected plane. The actual area refers to the area obtained when a bulky or three-dimensionally folded or petal-shaped three-dimensional combination is spread on a plane. In other words, it is the actual area of the fabric before it is made into a three-dimensional object. The fact that the apparent area is 0.7 or less of the actual area means that, when the plane fabric area is 100, the area when projected as a three-dimensional object is 70 or less. When the apparent area is 0.7 or more of the actual area, there is a problem that the three-dimensional property is insufficient, the luminance of the intended light emitting fiber structure does not increase, and there is almost no difference from the conventional light emitting fiber structure. As a means for reducing the apparent area to 0.7 or less, a method of forming by bulk folding, three-dimensional folding, and a petal-like three-dimensional combination can be adopted. The coating of the luminous pigment may be applied on at least one side, or may be on both sides. The film of the luminous pigment may be coated on the entire surface of the fabric, or may be discontinuous such as a pattern or a stripe.

The block-like bending of the light-emitting fiber structure of the present invention refers to a state in which the light-emitting fiber fabric is rounded by hand or machine or the like to be turned into a block. The three-dimensional bending refers to a state in which the light-emitting fiber fabric is formed by being three-dimensionally bent. The petal-shaped three-dimensional combination refers to a state in which the light-emitting fiber fabric is cut like a petal and combined one by one to form a three-dimensional structure.

The shape of the three-dimensional object may be fixed by various methods, for example, by sewing with a needle, by using a fastener, or by fixing with an adhesive. Further, a method of sewing a light-emitting fiber cloth while stretching a rubber-like elastic cloth can be employed.

In the present invention, the luminous pigment preferably contains 10 to 100 g / m ² of the luminescent fiber structure. If it is 10 g / m ² or less, the luminance of the original luminescent fiber structure is reduced, and the features of the present invention cannot be used. On the other hand, if the content is 100 g / m ² or more, it may cause deterioration of quality such as rough hardening of the texture, reduction of the film strength, and hydrolysis of the film and the phosphorescent pigment.
A range of 0 g / m ² is preferred. More preferably, 20 to 8
0 g / m ² .

As the resin used in the present invention, it is preferable to use a resin usually used for a fiber cloth and comprising a urethane resin, an acrylic resin, an aminoplast resin, an olefin resin, a silicone resin and a fluorine resin. .

The fiber cloth used in the present invention has an L value of 50.
Is greater. It represents lightness and L values, bright larger the value, the whiteness of magnesium oxide (M _g O) and 100. For example, when a gray luminescent fiber cloth having an L value of 50 is used, the luminance is reduced by about 60% as compared with a white light emitting cloth having an L value of 95.

When the L value is 50 or less, the fiber fabric and the resin absorb light, and the light absorption energy of the luminous pigment is reduced, resulting in a problem that the luminance of the light emitting structure is insufficient. The fiber fabric in the present invention is not only an intermediate product such as a fabric represented by a woven fabric, a nonwoven fabric, a knitted fabric, and the like,
It also means the final product obtained by cutting and sewing them. Such fiber fabrics include natural fibers such as wool, silk, cotton, hemp, acetate, recycled fibers such as rayon, polyamide,
It can be made from long fibers or short fibers of synthetic fibers such as polyester and polyacryl.

The fibers constituting the fibrous structure may contain additives such as dyes, antioxidants, antibacterial agents, flame retardants, and other pigments.

The luminous pigment used in the present invention means a pigment having the following properties. Some substances themselves absorb light, transition from the ground state to the excited (triplet) state, emit light again, and return to the ground state, and emit phosphorescent light. Means a pigment having a relatively long phosphorescent time.

There are various types of such pigments. For example, there are calcium sulfide-based pigments and zinc sulfide-based pigments which exhibit this property. Zinc sulfide-based pigments which are currently used exclusively on the market, particularly when moisture is present, Photodegradation by ultraviolet light causes blackening and lowering of luminance, and therefore, it is difficult to use it in applications where it is directly exposed to sunlight outdoors.

In the present invention, the afterglow luminance is 50 mcd / m ^2.
It is preferable to use a pigment having the above luminous ability.
As such a pigment, a luminous pigment “N night light” (trade name) manufactured by Nemoto Special Chemical Co., Ltd., a luminous pigment “Chemite Piccalico CP-04” (trade name) manufactured by Chemitex Corporation, or the like can be used.

Next, a method for producing the luminescent fiber structure of the present invention will be described.

As a method for obtaining a fibrous fabric comprising a coating of a luminous pigment, for example, when an acrylic resin is used, the luminous pigment and the acrylic resin are mixed. The amount of the luminous pigment is 1 to 100 parts by weight based on 100 parts by weight of the resin solid content.
The range of parts by weight is preferred, more preferably 3 to 70 parts by weight. At this time, the viscosity of the resin solution is 3,000 to 50,000 cp in order to prevent sedimentation of the luminous pigment in the coating liquid.
s is preferable, and 5,000 to 30,000 cps
It is more preferable to adjust the range. As a method for increasing the viscosity, when an acrylic resin emulsion is used, alkali thickening with ammonia can be employed.
In the case of an organic solvent system, a polymer resin may be used to adjust the solid content concentration.

Next, the resin solution obtained by mixing the acrylic resin and the luminous pigment may be coagulated by either dry coating or wet coating. The coating method may be a floating knife coater, knife over roll coater, reverse roll coater, or the like. Coating methods such as a roll doctor coater and a kiss roll coater can be used. In addition, a printing system for printing on a patterned pattern can also be adopted. The coating film may be made porous by various methods. The coating can be performed on one side or both sides. When the coating is applied on both sides, a higher brightness can be obtained in the case of the petal-shaped three-dimensional combination.

Next, the dried product is formed into a mass folded, three-dimensional folded, and a petal-shaped three-dimensional combination.

Hereinafter, the present invention will be described with reference to examples.

[0024]

EXAMPLES The performance evaluation method used in the examples described below was based on the method described below.

[L value] The value was measured using a multi-source spectrophotometer [CM-3700d] manufactured by Minolta Co., Ltd.

[Duration of afterglow] 20 pixels with a standard light source of D65
After irradiation for 4 minutes at 0 lux, the afterglow luminance after 20 minutes was measured with a luminance meter BM-7 manufactured by Topcon Corporation.

[Examples 1 to 3] Polyester fiber 100
% Of processed yarn (150d-48fil) into warp and weft as a fiber cloth, which is Sandet G-29.
(Trade name, manufactured by Sanyo Chemical Co., Ltd.) 1 g / liter and 30
80% containing 2 g / l of aqueous sodium hydroxide solution
It was immersed in scouring water at ℃ for 15 minutes for scouring.

Next, the scoured fabric is subjected to an intermediate heat treatment at a temperature of 180 ° C. for 30 seconds and then to a dyeing solution at 125 ° C. containing the following dye and dyeing aid at a bath ratio of 1:10 for 30 minutes. Stained.

Dye Mika White WTN 2% owf Dyeing aid Ionette TD-208 1 g / l Fixer PH-500 1 g / l Again containing Sandet G-29 1 g / l and 30% aqueous sodium hydroxide 1 g / l. The dyed fabric is immersed in a washing solution at 80 ° C. for 20 minutes for washing,
Next, the fabric is washed with water at a temperature of 60 ° C. for 10 minutes,
Dried at 120 ° C.

With respect to the dyed fabric obtained as described above,
A coating resin was prepared with the following composition.

Acrylic resin (Phoncoat AB-583 (trade name, manufactured by Dainippon Ink and Chemicals, Inc.)) 58.0 parts by weight Luminescent pigment (N night light G500 (trade name, manufactured by Nemoto Special Chemical Co., Ltd.)) 30.0 Parts by weight Crosslinking agent (Edzklon EM-85-75W (trade name, manufactured by Dainippon Ink and Chemicals, Inc.)) 2.0 parts by weight Thickener 1.0 parts by weight Ammonia 0.2 parts by weight Water 8.8 parts by weight The viscosity of the resin compounding liquid was 12,000 cps, then coating was performed using a knife coater and dried at 100 ° C. The resin adhering amount of the obtained fabric was 104.6 g / m.
² , the content of which was 69.6 g /
It was a phosphorescent pigment 35.0g / m ² in m ^2. L value is 85
Met.

The obtained fiber cloth was bent in a lump to change the ratio between the apparent area and the actual area, and formed as in Examples 1 to 3.

The results of measuring the afterglow luminance of this luminescent fiber structure are as shown in Table 1. As is clear from Table 1, the afterglow luminance was better when the apparent area was smaller than the actual area.

[0034]

[Table 1] [Comparative Examples 1 to 3] Using the same coated fiber cloths as in Examples 1 to 3, a luminescent fiber structure was formed by forming a flat surface and a mass close to a flat surface so that the apparent area became 0.7 or more of the actual area. It was fabricated and its afterglow luminance was measured. The results are shown in Table 1.

Example 4 Using the coated fiber fabrics obtained in Examples 1 to 3, a saw-toothed bending was performed, a mountain portion was sewn with a sewing machine, and a wide rubber string was sewn on the back surface. As a result, the apparent area is L at 0.5 of the actual area.
The value was 85. The afterglow luminance was 550 mcd / m ² , which was 1.8 times the luminance of a planar shape.

[Example 5] The coated fiber fabric obtained in Examples 1 to 3 was further coated on the back surface of the fiber fabric with Example 1
The coating was performed under the same conditions by using the same resin compounding liquid performed in Steps 3 to 3. The amount of resin adhered on the obtained rear surface was the same as that on the front surface. Using this fabric, 13 petals were cut out, combined and sewn. As a result, the apparent area was 0.3 of the actual area and the L value was 88. Afterglow brightness is 6
The luminance was 2.0 mcd / m ² , which was 2.0 times the luminance of the planar shape.

Examples 6 to 8, Comparative Examples 4 and 5 Fabrics having different L values were prepared by changing the dye concentration of the fibrous fabric, and the same resin-mixed liquids and the same conditions used in Examples 1 to 3 were used. To obtain a fiber fabric. Next, it was formed into a massive fold so that the same apparent area as in Example 2 became 0.4 of the actual area, and the afterglow luminance was measured. Table 2 shows the results. As is apparent from Table 2, when the L value is 50 or less, the fiber cloth and the resin absorb light, and the light absorption energy of the luminous pigment is reduced.

[0038]

[Table 2]

[0039]

According to the present invention, even if the content of the luminous pigment is the same, the luminance can be made higher than that of a flat object by making the apparent area 0.7 or less of the actual area. That is, various problems caused by increasing the concentration of the luminous pigment can be solved. When the light emitting fiber structure of the present invention is left in a bright place, the luminous substance absorbs light energy, is stored, and emits light by itself. Compared to the conventional planar fiber cloth, this light has a reduced apparent area due to a mass-fold, a three-dimensional bend, and a petal-like three-dimensional combination, so that the emission luminance can be greatly increased.

[Brief description of the drawings]

FIG. 1 is a schematic diagram schematically illustrating an example of a light emitting fiber structure of the present invention.

FIG. 2 is a schematic diagram schematically illustrating another example of the light emitting fiber structure of the present invention.

FIG. 3 is a schematic diagram schematically illustrating still another example of the light emitting fiber structure of the present invention.

Claims (5)

[Claims] 1. A fibrous fabric having a coating of a resin and a luminous pigment on at least one side, wherein the apparent area is 0.1% of the actual area.
A luminescent fiber structure, wherein the L value is 7 or less and the L value is larger than 50. 2. The luminescent fiber structure according to claim 1, wherein the luminescent fiber structure is at least one of a mass-fold, a three-dimensional fold, and a petal-like three-dimensional combination. 3. The luminescent fiber structure according to claim 1, wherein the luminescent fiber structure contains 10 to 100 g / m ^{2 of a} luminous pigment. 4. The resin is a urethane resin, an acrylic resin,
The luminescent fiber structure according to claim 1, 2 or 3, comprising at least one of an aminoplast resin, an olefin resin, a silicone resin, and a fluorine resin. 5. A safety suit using the luminescent fiber structure according to claim 1.