JPH10323924A - Luminous sheet-like material and safety clothes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a luminous sheet-like material and safety clothes which can be clearly recognizable visually even in the dark by joining a photostorable coating material and a photoreflective coating material adjacent to each other, in a pattern fashion, on the surface of a cloth. SOLUTION: A photostroable coating material is preferably of such a type that 20-80 g/m<2> of photostorable pigment is contained in a fiber cloth. A photoreflective coating material is preferably of the glass bead type, the closed type of which is most popular that glass beads are embedded in a resin layer. A raw material for the photostrable coating is applied to the fiber cloth using a knife coating and the coating is dried at 100 deg.C for two minutes. Next, the fiber cloth to be coated with the photoreflective coating, is subjected to a vapor- deposition with an aluminum layer having a thickness of abut 250 Å using a vacuum-deposition machine. After that, so many pieces of the fiber cloth which are individually coated, are cut to the width of 3 cm and the length of 15 cm respectively, and are sewn, in a stripe fashion, in the longitudinal direction so that these pieces of the fiber cloth are set alternately and thus the sheet-like material and the safety clothes are obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminescent sheet which stands out at night or in a dark place.

[0002]

2. Description of the Related Art Conventionally, a luminescent fiber fabric using a luminous pigment and a light reflecting material using glass beads are known.

[0003]

However, a luminescent fiber fabric using a luminous pigment uses a luminous pigment but emits light, but has a problem that the luminance is low, and the luminescent fiber using the luminous pigment is used in a place where there is no light. The visibility of the fabric was small. In addition, the use of light reflectors for traffic safety is effective, but there is no visibility when light is not applied and light cannot be reflected in places without light, so it does not shine and is inconspicuous . As described above, the luminescent fiber fabric using the luminous pigment and the light reflecting material have disadvantages. Conventionally, since there is no device having both the light storage property and the light emission property, the actual situation is that each of them is adapted according to the purpose.

[0004] In view of the background of the prior art, the present invention provides
It is an object of the present invention to provide a luminescent sheet and a safety garment which are excellent in visibility even when dark.

[0005]

The present invention employs the following means to solve the above-mentioned problems. That is, the luminescent sheet material of the present invention is characterized in that the luminous coating material and the light reflecting coating material are joined in a pattern adjacent to the surface of the fabric. Further, the safety clothing of the present invention is characterized by being sewn using such a luminescent sheet.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has been studied diligently for a luminescent sheet having excellent visibility even when it is dark. Taking advantage of both features,
The present inventors have sought to solve the above-mentioned problems all at once by combining the luminous material and the light-reflective material and joining them to the fabric.

That is, it has been found that a function of covering each defect is exhibited by combining a light storing material (coating material) and a light reflecting material (coating material). That is, in the case of a light-reflective material, light cannot be reflected in a place where there is no light, so that the light-reflective material has a disadvantage that it is inconspicuous. There are drawbacks that themselves are not very noticeable, but each of these drawbacks is a surprising effect that when both materials are combined, these synergistic effects cancel out these drawbacks and exhibit the characteristic of emitting light even in the dark. is there. Such a light emitting function is preferable because it is further exhibited when combined in a state where they do not overlap in a planar manner. However, when combined in an overlapping state,
It has a tendency that the luminous property and the light reflectivity are halved or the characteristics thereof are completely lost.

In the present invention, the luminous material and the light reflecting material are combined in a pattern.
It may be at least one selected from a striped shape, a sea-island shape and a patterned shape, and the pattern may be an identification pattern. In the present invention, such a material is formed by constituting at least one surface of a fabric. The phosphorescent material and the light reflecting material only need to be present on at least one side, and are formed by means such as lamination or coating. Of course, it may be formed on both sides.

[0009] The above-mentioned pattern will be described. The stripe shape indicates a state in which the luminous coating material and the light reflecting coating material are alternately striped, and the sea-island shape indicates a luminous coating material like a polka dot pattern. A state in which the material or the light-reflective coating material has a polka dot pattern, and the other light-reflective coating or the luminous coating material has a non-polka dot background. In the pattern design, the luminous coating material or the light-reflective coating material is an arbitrary pattern, and the other light-reflective coating material or the luminous coating material is the background of the arbitrary pattern. In this state, both the luminous coating material and the light-reflective coating material may be patterned. The identification pattern means that the pattern formed as described above exhibits an identification function.

In the present invention, as the luminous coating material, for example, the luminous pigment is preferably 10 to 100 g / m
² , more preferably 20 to 80 g / m ² . If it is less than 10 g / m ² , the luminance of the original luminous pigment will be low, and the features of the present invention cannot be used. On the other hand, if it is 100 g / m ² or more, it may cause a deterioration in quality such as rough hardening of the hand, a decrease in the film strength, and a hydrolysis of the luminous film.

The fiber cloth used for the luminescent sheet of the present invention preferably has an L value of 50 or more. Here, the L value indicates lightness, and the larger the value, the brighter the brightness and the whiteness of MgO as 100.
For example, when a gray fiber fabric having an L value of 50 is used, the brightness is reduced by about 60% as compared with white having an L value of 95. L
When the value is 50 or less, the fiber cloth and the resin absorb light, and the light absorption energy of the luminous film is reduced, and the luminance of the luminous film is not preferable. The fiber fabric referred to in the present invention means not only intermediate products such as fabrics represented by woven fabrics, nonwoven fabrics and knitted fabrics, but also final products obtained by cutting and sewing them. Such fiber fabrics are made of natural fibers such as wool, silk, cotton, and hemp, recycled fibers such as acetate and rayon, and synthetic transition long fibers or short fibers such as polyamide, polyester, and polyacryl. Further, the fibers constituting the fiber cloth may contain additives such as dyes, antioxidants, antibacterial agents, flame retardants, and other pigments.

The luminous film referred to in the present invention means a film having the following properties. Some substances themselves emit light, which emit light, transition to the excited (triplet) state from the ground state by absorbing light, and emit light again to emit a so-called phosphorescent light. By coating is meant a coating that emits phosphorescence for a relatively long time.

As such a luminous film, for example, luminous pigments are already known. For example, there are calcium sulfide pigments and zinc sulfide pigments which exhibit this property.
Zinc sulfide pigments, which are currently exclusively used in the market, also have the problem that they are photodegraded by ultraviolet rays and blackened or their brightness is reduced, especially in the presence of moisture. It is preferable not to use it.

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

As the light reflective coating material used in the present invention, a glass bead type and a non-glass bead type can be used. Among them, it is preferable to use a glass bead type in which a closed type in which glass beads are embedded in a resin layer is mainly used. The configuration of the closed type light-reflective cloth consists of (1) a surface resin layer, (2) a resin layer buried in glass beads,
(3) Focal resin layer, (4) reflective film, (5) adhesive layer, and (6) laminated fabric are preferred.

The true spherical transparent glass beads used in the present invention are preferably those mainly composed of TiO ₂ and BaO.
The refractive index is not particularly limited, but it is preferable to use glass beads of 2.16 to 2.20. The refractive index is 2.1
If it is 6 or less, the light reflection effect of the obtained fabric becomes poor, which is not preferable. Further, at present, if glass beads having a refractive index of 2.3 or more are to be obtained, the devitrification rate will be high, and the practicality is poor.

The above glass beads are preferably contained in an amount of 50% by weight or more based on the resin solid content of the buried resin layer. 5
If it is less than 0% by weight, the light reflection effect tends to be poor.

Next, a method for producing the luminous portion of the present invention will be described. A fiber cloth having an L value of 50 or more is prepared. Next, as a method of obtaining a fiber cloth comprising a film of a luminous pigment, for example, when using an acrylic resin,
Mix the luminous pigment and acrylic resin. The amount of the luminous pigment is preferably 1 to 100 parts by weight, more preferably 3 to 70 parts by weight, based on 100 parts by weight of the resin solids. At this time, the viscosity of the resin solution is preferably 3,000 to 50,000 to prevent the sedimentation of the coating solution of the luminous pigment.
00 cps, more preferably 5,000 to 30,00
It is better to adjust to 0 cps. As a method for thickening, when an acrylic resin emulsion is used, alkali thickening with ammonia can be adopted. In the case of an organic solvent system, a polymer resin may be used to adjust the solid content concentration.

Next, as a method of solidifying a resin solution in which an acrylic resin and a luminous film material are mixed, either dry coating or wet coating may be used. As a coating method, a floating knife coater, a knife over roll coater, a reverse roll coater may be used. , A roll doctor coater, a kiss roll coater and the like. The coating may be appropriately used, for example, a method of directly coating a base fabric, a method of coating a support, or the like. In addition, a printing system for printing on a patterned pattern can also be adopted. The coating film may be made porous by a known method. The coating can be applied on one side or both sides.

Next, the method for producing the light reflective coating of the present invention will be described. First, prepare visually transparent glass beads and mix them with resin. In order not to settle the glass beads, a thickener may be added. Then, an appropriate fiber cloth is prepared, and is vapor-deposited with a layer of aluminum having a thickness of about 250 Å using a vacuum vapor deposition machine.

Next, the deposited fiber fabric is coated by an appropriate coating method. At this time, the thickness of the coating when wet is preferably 90 to 110 micrometers, more preferably 95 to 105 micrometers.

In the present invention, the method of combining the luminous film and the light-reflective film may be a combination method such as a combination by sewing, a combination by printing, or a combination by coating. The combination by sewing is a method in which a luminous film and a light-reflective film are appropriately coated on separate base fabrics and sewn in a stripe shape, a patchwork shape, or the like. Alternatively, a method of picking up a sewn product may be used. The combination by printing is a method of printing a luminous film, a light-reflective film, or both a luminous and light-reflective film so as to have an arbitrary pattern such as a stripe shape, a sea-island shape, a patterned pattern, and the like. The combination by coating means that a luminous film material and a light-reflective film material are alternately supplied from a nozzle in the width direction of the knife coat by a knife coater, and a pattern is provided in a stripe shape in the vertical direction. The nozzle can be slid left and right to form a striped pattern in the vertical direction in a curved shape. As the resin used in the present invention, it is preferable to use a resin usually used for a fiber cloth, which is composed of a urethane resin, an acrylic resin, an aminoplast resin, an olefin resin, a silicone resin, a fluorine resin, or the like.

[0023]

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.

Example 1 Processed yarn of 100% polyester fiber (150d-48f
il) as a fiber fabric using warp and weft as a fiber fabric, which is Sandet G-29 (trade name, manufactured by Sanyo Chemical Co., Ltd.)
1g / liter and 2g of 30% sodium hydroxide aqueous solution
The sample was immersed in scouring water at 80 ° C containing 1 / liter for 15 minutes to scour.

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 1 g / l of Sandet G-29 and 1 g / l of a 30% aqueous sodium hydroxide solution. The dyed fabric is immersed in a washing solution at 80 ° C. for 20 minutes for washing,
Then, the fabric is washed with water at a temperature of 60 ° C. for 10 minutes, and
Dried at 20 ° C.

For the dyed fabric obtained as described above,
First, a coating resin for the luminous portion was prepared with the following composition.

30. Acrylic resin [Phoncoat AB-583 (trade name, manufactured by Dainippon Ink and Chemicals, Inc.)] 58.0 parts by weight Luminescent pigment [N Nightlight G500 (trade name, manufactured by Nemoto Special Chemical Co., Ltd.)] 0 parts by weight Crosslinking agent [Edicron 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 Part The viscosity of the resin compounded liquid was 12,000 cps. Resin deposition amount of the resulting fabric that amount was 104.6 g / m ² was phosphorescent pigment 35.0 g / m ² of an acrylic resin coating weight 69.6 g / m ^2.

Next, a coating resin for a light-reflective coating was prepared. First, a sphere made of TiO ₂ and BaO, which are visually transparent and truly spherical, was prepared. The refractive index of the prepared glass beads was 2.16. The glass beads and the acrylic resin were mixed, and a thickener was added a little to prevent the glass beads from settling. At this time, the weight% of the glass beads was 60% by weight based on the solid content of the acrylic resin. Resin deposition amount of the resulting fabric that amount was 105.7 g / m ² was the light reflecting pigments 36.4 g / m ² of an acrylic resin coating weight 71.2 g / m ^2.

A fibrous fabric to be coated with the luminous coating material and the light-reflective coating material was prepared, and the fibrous fabric was vapor-deposited by a vacuum vapor deposition machine with an aluminum layer having a thickness of about 250 angstroms.

Next, using a knife coater, the phosphorescent coating material and the light-reflective coating material were alternately supplied from a nozzle so as to form a stripe shape, coated, and dried at 100 ° C. for 2 minutes. FIG. 1 shows the one created in the first embodiment.

Example 2 The luminous coating material used in Example 1 was coated on a fiber cloth using a knife coater and dried at 100 ° C. for 2 minutes. Next, another fiber fabric to be coated with a light-reflective coating was prepared, and the fiber fabric was vapor-deposited with a layer of aluminum on aluminum having a thickness of about 250 angstroms using a vacuum vapor deposition machine. Then, the light-reflective coating material used in Example 1 was prepared, and the deposited fiber fabric was coated with a knife coater (Example 2-1).

Each of the separately coated fiber cloths is cut into a size of 3 cm in width and 15 cm in length, and is striped so that the fiber cloth of the luminous film and the fiber cloth of the light-reflective film alternate. The length direction was sewn. Figure 2
(Example 2-2).

The separately coated fiber cloths are cut into pieces each having a side length of 5 cm so that the fiber cloth of the luminous film and the fiber cloth of the light-reflective film alternately form a patchwork. Sewing. This is shown in FIG.

Example 3 The luminous film material, the light-reflective film material used in Example 1,
A fiber fabric is prepared. First, the fiber fabric was deposited on aluminum having a thickness of about 250 angstroms with an aluminum layer using a vacuum deposition machine. Then, using a roll printing machine, the luminous film and the light-reflective film were each printed in a pattern. This is shown in FIG.

[0037]

According to the present invention, it is possible to provide a sheet-like material having excellent visibility at night or in a dark place, especially clothing such as work clothes having excellent safety.

[Brief description of the drawings]

FIG. 1 is a plan view of a fiber fabric having a luminous film and a light-reflective film of the present invention prepared in Example 1.

FIG. 2 is a plan view of a fiber fabric having a luminous film and a light-reflective film of the present invention prepared in Example 2-1.

FIG. 3 is a plan view of a fiber fabric having a luminous film and a light-reflective film of the present invention prepared in Example 2-2.

FIG. 4 is a plan view of a fiber fabric having a luminous film and a light-reflective film of the present invention prepared in Example 3.

[Explanation of symbols]

 1: luminous part 2: light reflective part 3: sewing part

Claims (12)

[Claims] 1. A luminous sheet-like article characterized in that a luminous coating material and a light reflecting coating material are joined in a pattern adjacent to the surface of a fiber fabric. 2. The luminescent sheet according to claim 1, wherein the luminous coating material and the light reflecting coating material are combined so as not to overlap each other in a plane. 3. The luminescent sheet according to claim 1, wherein the combination is at least one selected from the group consisting of a stripe, a sea-island and a pattern. 4. The luminescent sheet according to claim 2, wherein the pattern is an identification pattern. 5. The luminescent sheet according to claim 1, wherein the combination is formed on at least one side of a fabric. 6. The luminescent sheet according to claim 1, wherein said luminous coating material comprises a luminous pigment. 7. The luminescent sheet according to claim 1, wherein the luminous film has an L value of 50 or more. 8. The phosphorescent coating material has a thickness of 10 to 100 g / m.
^2. The luminescent sheet according to claim 1, wherein the luminescent sheet is contained. 9. The light-reflective coating material is of a closed type in which glass beads are buried in a resin layer, and the glass beads in the buried layer of the glass beads are 50% of the solid content of the resin constituting the buried layer. 2. The luminescent sheet according to claim 1, wherein the luminescent sheet is contained in an amount of at least 10% by weight. 10. The light-reflective coating material weighs 10 to 100 g.
The luminescent sheet according to claim 1, wherein the content of the luminescent sheet is / m ² . 11. The luminescent sheet according to claim 1, wherein the area ratio of the luminous coating material to the light-reflective coating material is in the range of 1: 9 to 9: 1. 12. A safety garment sewn using the luminescent sheet according to any one of claims 1 to 11.