JPS5815451Y2 - light reflective safety hat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light-reflective safety hat that makes its presence clear by receiving light and reflecting it.

Traditionally, this type of invention regarding booklets was made in 1973-
Helmets described in Japanese Utility Model Publication No. 30680 and Japanese Utility Model Publication No. 46-29449 are known.

The former involves mixing a large number of tiny transparent spheres into a colored synthetic resin base material, molding the helmet body, and processing some of the tiny transparent spheres to make the surface uneven. Therefore, sufficient retroreflection could not be expected.

This is because the light incident on the helmet only passes through the transparent sphere, is refracted and exits, and only a small amount of the incident light is reflected by the transparent sphere.

Therefore, with a helmet of such a conventional structure, not only is it not possible to obtain good reflective properties, but also a certain level of reflective properties cannot be expected unless a large number of transparent micro spheres are arranged in multiple layers. The material itself is hard and the flexible material may be the side sole, so it is completely suitable for hats other than helmets, such as flexible hats such as cloth hats.

In addition, the latter conventional helmet has an adhesive layer coated on the surface of the helmet body with vinyl resin, synthetic rubber, or a substance with the same effect, and is coated with a reflective layer of fine crystalline metal powder such as tin chloride or tin oxide. coat the layer,
Transparent spheres with a diameter of 0.03 to 1 mm are scattered and fixed onto this layer.

This conventional example has the following drawbacks because the reflecting means of the transparent sphere is metal powder.

■ The appearance during the day was chain-like or dark gray metallic, and even when colored, it was not possible to obtain a vivid color due to the presence of metal powder.

Therefore, it was completely unsuitable for hats as clothing.

■ Poor retroreflective properties.

This is because the metal powder is not arranged around the buried part of the transparent sphere, but is simply mixed in the adhesive layer, so the light incident on the transparent sphere is refracted and passes through the metal powder. The light that hits the powder and is reflected goes out through the transparent sphere again, but because the metal powder is scattered, a lot of light is scattered and the desired retroreflection properties cannot be achieved.

Therefore, it is impossible for a car driver or the like to clearly recognize the presence of a person wearing a hat from a distance, and it is not very useful for preventing traffic accidents at night.

■ It was not suitable for flexible hats.

This invention was devised in view of the above circumstances,
Hats, which are flexible clothing items, can be vividly colored to enhance their fashion effect, and have extremely good retroreflective properties to improve traffic stability for those wearing the hat.
The object of the present invention is to provide a light-reflecting safety hat with improved texture and flexibility.

Hereinafter, a preferred embodiment of the present invention will be described based on the drawings. In a hat 1 consisting of a cap part 2 and a brim part 3, the cap part 2 is formed by sewing six triangular pieces of fabric. , each of the two sheets are made of light reflecting cloth 4, and both left and right sides are made of mesh fabric 5.

A light reflecting cloth 4 similar to the above is sewn to cover the surface of the interlining (not shown; cardboard or the like is used) of the brim 3.

In FIG. 1, a part of the fabric forming the hat surface is formed of the light-reflecting cloth 4, but the entire fabric forming the hat surface may be formed of the light-reflecting cloth 4.

As the light reflecting cloth 4, an adhesive layer 7 is formed on the upper surface of a base cloth 6 made of woven fabric or knitted fabric, a binder layer 8 is formed on the upper surface of this adhesive layer 7, and the binder layer 8 is formed on the upper surface of this adhesive layer 7. It has a structure in which a reflective material 9 is mixed in the layer 8 and small balls 10 are embedded from the upper surface of the binder layer 8 (see FIG. 2).

Said spherules 10 have an average diameter in the range of 25 to 250 microns, particularly preferably in the range of 50 to 90 microns.

Experiments have shown that when balls 10 with a diameter of less than 25 microns are used, the reflection efficiency deteriorates, and when balls 10 with a diameter of over 250 microns are used, not only the appearance of the resulting fabric is impaired, but also the flexibility and feel are deteriorated. It has been revealed.

Moreover, this small sphere 10 has a refractive index of at least 1.7 or more.

The binder forming the binder layer 8 is preferably one that firmly binds to the small spheres 10, is not eluted by the solvent used during cleaning, and is flexible.
For example, compositions based on thermoplastic polyurethane resins mixed with about equal amounts of vinyl chloride-vinyl acetate copolymer resins and containing small amounts of epoxy resins are suitable.

To color the binder layer 8, various transparent pigments or dyes may be added, especially safe colors such as strong red, green, etc.
To color the product white, blue, etc., crush a transparent or translucent pigment of a similar color and add it.

Note that, if necessary, a protective layer such as a synthetic resin or a colored film may be applied to cover the upper surface of the small sphere 10.

As said reflective material 9, platelets of a pearlescent pigment such as basic lead carbonate are used, which platelets preferably have a diameter in the range of 8 to 25 microns and a thickness in the range of 40 to 200 millimicrons. .

The reflective material 9 is preferably arranged in multiple layers along the spherical surface of the covered portion of the small ball 10 and partially contacts the spherical surface of the small ball 10 (see FIG. 3).

The light reflecting cloth 4 having the above structure is manufactured by applying a thermoplastic sheet 1 on the surface of a sheet material 11 having a smooth surface (paper or synthetic resin).
2 is adhered to the thermoplastic sheet 12 of the release member 13, and the small sphere 10 is heated and embedded in a roughly hemispherical shape, and then the exposed portion of the small sphere 10 is faced to the surface of the binder layer 8 formed on the base fabric 6. The small balls 10 are embedded in the binder layer 8 by heating and pressurizing, and then the peeling member 13 is attached to the small balls 10.
This is done by peeling off the binder layer 8 while leaving it in the binder layer 8 (see FIG. 4).

As the thermoplastic sheet 12, small balls 10 are formed during hot melting.
Polyethylene, vinyl chloride, etc., which are difficult to weld to the surface, are used.

When such a manufacturing method is used, the surface of the small sphere 10 buried in the thermoplastic sheet 12 comes into contact with the surface of the smooth sheet material 11 during heating and pressurization, and becomes smooth, so that the small sphere 10 is bonded. This has the advantage that the upper ends of the exposed portions are neatly aligned when buried in the agent layer 8, and since the small balls 10 are not directly heated or pressurized, the small balls 10
It has the advantage that there is no risk of it being damaged or peeling off.

In the manufacturing method shown in FIG. 4, a binder layer 8 is applied to a wet thickness of about 150 microns over an adhesive layer 7 (applied to a wet thickness of about 405 microns) formed on the top surface of the base fabric 6. When the small spheres 10 are press-fitted into the binder layer 8, the reflective material 9, which resembles pearlescent pigment platelets, is arranged in multiple layers along the spherical surface of the small spheres 10.

Because 40-200 in the diameter range of 8-25 microns
The pearlescent pigment platelets having a thickness in the millimicron range produce parallel viscous flow when applying the wet binder layer 8 (e.g. by brush coating or knife coating) due to the displacement movement of the coated surface and the brush, etc. Therefore, due to this viscous flow, the platelets in the binder layer 8 are arranged in parallel, and then the press-fitting of the small balls 10 causes a viscous flow in the binder 8 along the small balls 10, which causes the platelets in the binder layer 8 to be arranged in parallel. This causes the small spheres 10 to be arranged along the spherical surface.

As shown in FIG.
0, is refracted, hits the reflective material 9 and is reflected in multiple layers,
The light is refracted by the small sphere 10 and reflected back toward the light source as light L2, that is, retroreflection is performed in which the light returns back toward the light source.

When the small spheres 10 are not buried, the pearlescent pigments 91 are arranged in parallel, and the light that hits them is multi-reflected as shown in Figure 6a, producing strong reflection and pearlescent luster. 92, the light will be scattered as shown in FIG.

This is a fact that has long been known as a property of pearlescent pigments.

In addition, as shown in Figure 6a, the pearlescent pigment is
The shading power is extremely small, and the light passes through several layers of pigment 91 and is repeatedly reflected.

This property of having extremely low shading power means that unlike metal powders, which have a black tinge that makes it difficult to mix them into beautiful colors, pearl pigments can be toned freely without imparting a black tinge. I guarantee that.

As explained above, in the present invention, the structure of the reflecting means itself is completely different from the conventional metal powder, and is arranged around the small sphere, and the reflecting material as the reflecting means is 8. 40-20 in the ~25 micron diameter range
Since the pearlescent pigment platelets have a thickness in the range of 0 millimicrons, the incident light that has been refracted and transmitted through the small spheres is reflected in many ways by the presence of the pearlescent pigment platelets, and is reflected as strong reflected light in the direction of the light source. I'm going home.

Further, the diameter of the small balls used is 25 to 250 microns, and the diameter is 300 microns or more, like the small balls used in the conventional technology (the helmets described in Japanese Utility Model Publication No. 39-30680 and Japanese Utility Model Publication No. 46-29449). The flexibility and feel are good compared to those with a diameter of .

Therefore, it satisfies the flexibility required for a hat as a clothing item, has a good feel, has no risk of spoiling the appearance due to wrinkles, and can satisfy fashionability.

In addition, the use of pearlescent pigment platelets as a reflective material eliminates the drawback of metal powder, which has a black tinge and makes it impossible to create beautiful colors. Not only can the color enhance the fashion effect, but also from the perspective of traffic safety, the attention-grabbing power of the color itself and the retroreflective properties combine to make the presence of the person wearing the hat more noticeable to car drivers. It can be done in a peel.

Furthermore, the fact that the spherules have a diameter of 25 to 250 microns improves the appearance, flexibility, and feel of the fabric as described above, but in addition to these effects, it also improves the appearance, flexibility, and feel of the fabric.
The use of nacreous pigment platelets as reflectors with a diameter range of 25 microns and a thickness ranging from 40 to 200 millimicrons and that the refractive index of the globules is greater than or equal to 1.7 are advantageously associated. Together, they provide extremely excellent retroreflective properties.

That is, in the combination of a small sphere of a predetermined size and a pearlescent pigment platelet as described above, a kind of reflective film is formed so that the platelet adheres closely along the spherical surface in which the small sphere is buried. If the ball has a refraction value of 1.7 or more, it exhibits extremely good retroreflection characteristics.

[Brief explanation of drawings]

Fig. 1 is a perspective view, Fig. 2 is a cross-sectional view of the light-reflecting cloth, Fig. 3 is a partially enlarged cross-sectional view of the light-reflecting cloth, Fig. 4 is a cross-sectional view showing one process of manufacturing the light-reflecting cloth; FIG. 5 is an enlarged sectional view showing the retroreflection of light incident on the light-reflecting cloth, FIG. 6a is an explanatory diagram showing the reflection characteristics of pearl pigment platelets, and FIG. 1... Hat, 4... Light reflective cloth, 6...
...Base fabric, 7...Adhesive layer, 8...
・Binder layer, 9... Reflective material, 10...
Small ball.

Claims (1)

[Scope of utility model registration request] 1. A light-reflective safety hat characterized in that part or all of the fabric forming the surface of the hat is formed from a light-reflecting fabric consisting of the following (a) or c). (a) A binder layer formed on the top surface of the adhesive layer formed on the base soil surface; (b) A diameter range of 8 to 25 microns mixed in the binder layer, with a diameter ranging from 40 to 200 microns. (c) a reflective material of pearlescent pigment platelets having a thickness of 25 to 250 microns in diameter and a refractive index of 1.0 microns embedded in a binder layer and arranged in multiple layers around this embedded portion; Small balls of 7 or more. 2. The light-reflecting safety hat according to claim 1, wherein the binder layer is colored in a desired color. 3. The light reflectivity according to claim 1 or 2 of the utility model registration claim, characterized in that a protective film or a colored film made of synthetic resin or the like is applied on the binder layer so as to cover the globules. Safety hat.