JP2022170750A - Microprism powder and method of manufacturing microprism powder - Google Patents

Abstract

To provide a micro prism powder capable of predicting danger due to retro-reflection and diffuse reflection due to irradiation of irradiation light as well as protection of the adherend, and capable of creating an optical design by glittering and diffuse reflection of the vapor deposition color without applying light, and also to provide a method of manufacturing the micro prism powder.SOLUTION: Disclosed is a microprism powder made of a transparent synthetic resin material. A shape of the microprism powder is an equilateral triangular pyramid or an isosceles triangular pyramid, and at least one or more colors are vapor-deposited on all other faces other than one face.SELECTED DRAWING: Figure 10

Description

The present invention provides microprism powder and a method for producing microprism powder that can create optical designs unique to adherends by applying them to moving or fixed adherends to predict dangers due to light retroreflection and diffuse reflection, and to create optical designs unique to adherends by light irradiation. It is about.

In Japan, due to the extreme concentration of population and automobile society accompanying urbanization, urban areas are suffering from chronic traffic jams. In addition, with the aging society, the number of elderly people who have difficulty thinking and acting more often walks on the back roads and alleys. increasing.

Since these back roads and alleys are not fully equipped with road lighting, etc., it is left to the safety confirmation of the vehicle driver, but it is extremely difficult to confirm the danger, so tragic traffic accidents occur again and again. In addition, in recent years, the use of bicycles has been increasing rapidly due to the rise in health consciousness, but on the main roads it is monopolized by overcrowded vehicles, so sidewalks have become commonplace. It is in.

For this reason, light retroreflecting materials with pyramid-shaped protrusions formed on the surface of synthetic resin or glass plate materials are used in order to retroreflect even the slightest amount of light emitted from the headlights of the vehicle driver without diffusing it, thereby enhancing danger awareness. has come to be adopted as a roadside visual guidance sign (denilita) and a rear reflector of a vehicle (see Patent Document 1).

JP-A-8-60627

However, most of the catastrophic accidents in traffic accidents are between vehicle drivers and pedestrians. Therefore, it is proposed that not only the safety of vehicle drivers but also pedestrians, especially road workers and traffic control personnel, should be actively notified of the existence of dangers, which will greatly contribute to the prevention of traffic accidents. has reached

For this reason, the inventor sewed a light retroreflective sheet material, in which one side of a synthetic resin film was subjected to minute triangular pyramid-shaped light retroreflection processing to a large number of light retroreflection processes, to the work clothes of road workers and traffic control personnel. The use of adhesives or adhesives has brought about great results in the reduction of traffic accidents by allowing vehicle drivers to make an early warning of danger. In addition, in recent years, the light retroreflective sheet material is sewn, stuck, or adhered to a part of children's school bags, hats, shoes, etc., thereby significantly improving the reduction of traffic accident prevention.

Traffic accidents involve not only road workers and traffic control personnel but also the entire nation. In addition, when walking, a bag, bag, pouch, attaché case, mobile phone, laptop computer, cart, or the like is also carried. Therefore, from the viewpoint of traffic accident prevention, it has been proposed to use light retroreflective sheet materials not only for private cars, motorbikes and bicycles but also for personal belongings to enhance danger prediction.

However, in today's high-class and individualized trends due to the improvement of living standards, there is an extremely strong commitment to the appearance such as design and color tone in the selection of cars, motorcycles, bicycles, etc. In addition to the design and color tone, fashionability is also strongly required, so even if it is possible to predict danger, the sewing, sticking, or adhesion of the retroreflective sheet material is not limited to design and color tone. It has lost its fashionability from the ground up and has a problem that cannot be adopted at all.

The present invention is intended to solve the above-mentioned conventional problems, and in addition to protecting the adherend, it is possible to predict danger due to retroreflection and diffuse reflection by irradiation of irradiation light, and vapor deposition color can be applied without exposing light. To provide a microprism powder and a method for producing the microprism powder capable of creating an optical design by glittering irregular reflection.

In order to solve the above-mentioned problems, the invention according to claim 1 provides a microprism powder made of a translucent synthetic resin material, wherein the shape of the microprism powder is a regular triangular pyramid or an isosceles triangular pyramid. , at least one or more colors are vapor-deposited on surfaces other than one of the surfaces.

In the invention according to claim 2, the microprism powder is obtained by injecting the translucent synthetic resin material (resin) into a mold, and the mold is formed from the side into which the translucent synthetic resin material is injected. After the sheet material is attached to the surface, UV irradiation is performed to harden the translucent synthetic resin material, the sheet material with the hardened translucent synthetic resin material is peeled off from the mold, and the sheet material is attached In a preferred embodiment, the color is vapor-deposited on the surface of the light-transmitting synthetic resin material, and the vapor-deposited light-transmitting synthetic resin material is separated from the sheet material.

In the third aspect of the present invention, it is preferable that the one surface is the surface attached to the sheet material.

In the fourth aspect of the invention, it is preferable that the UV irradiation is performed from the sheet material side.

In the invention according to claim 5, there is provided a microprism powder manufacturing method for manufacturing microprism powder made of a translucent synthetic resin material, wherein a mold having a plurality of regular triangular pyramids or isosceles triangular pyramids is provided. a step of injecting the translucent synthetic resin material; a step of attaching a sheet material to the mold from the side where the translucent synthetic resin material is injected; to harden the translucent synthetic resin material; peeling the sheet material to which the hardened translucent synthetic resin material is attached from the mold; and the translucent synthesis attached to the sheet material. The method comprises the steps of vapor-depositing at least one or more colors on the surface of a resin material, and separating the translucent synthetic resin material on which the color is vapor-deposited from the sheet material. .

In the sixth aspect of the invention, it is preferable that the UV irradiation is performed from the sheet material side.

In the microprism powder according to claim 1, the microprism powder is made of a translucent synthetic resin material, and the shape of the microprism powder is an equilateral triangular pyramid or an isosceles triangular pyramid, except for one surface thereof. By vapor-depositing at least one or more colors on the surface, it is possible to protect the adherend, as well as predict danger due to retroreflection and diffuse reflection by irradiation of irradiation light, and the vapor deposition color glitters even without exposing it to light. Diffuse reflection can create an optical design.

In the microprism powder according to claim 2, the microprism powder is formed by injecting the translucent synthetic resin material (resin) into a mold, and from the side into which the translucent synthetic resin material is injected. A sheet material is attached to a mold, and after the translucent synthetic resin material is hardened by UV irradiation, the sheet material with the hardened translucent synthetic resin material is peeled off from the mold, and the sheet material is By vapor-depositing the color on the surface of the light-transmitting synthetic resin material attached to and removing the vapor-deposited light-transmitting synthetic resin material from the sheet material, the surface attached to the sheet material is transparent Because it is not colored, it can let in light, which makes it possible to create a colored reflector by making the other surface on which the color is vapor-deposited shine.

In the microprism powder according to claim 3, since the one surface is the surface attached to the sheet material, light can enter the microprism powder.

In the microprism powder according to claim 4, the UV irradiation is performed from the sheet material side, so that the sheet material can be attached with the translucent synthetic resin material.

In the microprism powder production method according to claim 5, the microprism powder production method for producing the microprism powder made of a translucent synthetic resin material comprises forming a plurality of regular triangular pyramid or isosceles triangular pyramid molds a step of injecting the translucent synthetic resin material into a mold; a step of attaching a sheet material to the mold from the side where the translucent synthetic resin material is injected; a step of irradiating a mold to harden the translucent synthetic resin material; a step of peeling the sheet material with the hardened translucent synthetic resin material from the mold; comprising the steps of vapor-depositing at least one or more colors on the surface of a light-transmitting synthetic resin material; and separating the light-transmitting synthetic resin material onto which the color has been vapor-deposited from the sheet material. As a result, it is possible not only to protect the adherend but also to predict danger due to retroreflection and diffuse reflection by irradiation of irradiation light, and to create an optical design by glittering diffuse reflection of vapor deposition color without exposing light. In addition, since the surface attached to the sheet material is transparent and has no color, light can enter, and the other surface on which the color is vapor-deposited shines, making it possible to create a colored reflector.

In the microprism powder manufacturing method according to claim 6, the UV irradiation is performed from the sheet material side, so that the translucent synthetic resin material can be attached to the sheet material.

1 is a diagram showing an example of a mold for manufacturing microprism powder according to the present invention; FIG. 1 is a side view of an example of a mold for manufacturing microprism powder according to the present invention. FIG. 1 is a perspective view of an example of a mold for manufacturing microprism powder according to the present invention, viewed obliquely from above; FIG. FIG. 4 is a diagram showing a state in which a range is injected into a mold for manufacturing the microprism powder according to the present invention; FIG. 10 is a diagram of when a sheet material is attached to a mold for manufacturing the microprism powder according to the present invention; FIG. 4 is a diagram showing a state in which a sheet material attached to a mold for manufacturing microprism powder according to the present invention is irradiated with UV. FIG. 4 is a diagram of a state in which a sheet material is removed from a mold for manufacturing microprism powder according to the present invention; FIG. 4 is a diagram showing a state in which colors are vapor-deposited on the microprism powder according to the present invention; FIG. 4 is a diagram of a state in which the sheet material is detached after color is vapor-deposited on the microprism powder according to the present invention; FIG. 2 is a diagram showing microprism powder according to the present invention; It is the figure which looked at the microprism powder based on this invention from the front. It is the figure which looked at the microprism powder based on this invention from the back. It is the figure which looked at the microprism powder which concerns on this invention from the right side. It is the figure which looked at the microprism powder based on this invention from the left side. It is the figure which looked at the microprism powder which concerns on this invention from above. It is the figure which looked at the microprism powder based on this invention from the bottom.

BEST MODE FOR CARRYING OUT THE INVENTION A microprism powder and a microprism powder production method according to the present invention will be described below based on one embodiment with reference to the drawings.

First, a method for producing microprism powder and the microprism powder of one embodiment will be described with reference to FIGS. 1 to 16. FIG.

The microprism powder (hereinafter simply referred to as a prism) 10 of this embodiment can be used as a prism-shaped reflector in products such as reflective paint (coating material) with color variations. A method for manufacturing the prism 10 will be described below.

A mold 11 shown in FIG. 1 is used to manufacture the prism 10 . The mold 11 is composed of a plurality of dies of triangular pyramids 12, and the respective triangular pyramids 12 are connected as shown in FIG. The shape of the triangular pyramid 12 is not limited to this shape, and may be a regular triangular pyramid or an isosceles triangular pyramid. Also, instead of a triangular pyramid, a polygonal pyramid such as a quadrangular pyramid or a pentagonal pyramid may be used.

Further, the material of the mold 11 is not limited to metal, and any material that can withstand UV (UltraViolet) irradiation, that is, ultraviolet irradiation, which will be described later, may be used, such as plastic. Moreover, the size of the triangular pyramid 12 of the mold 11 is not limited to one size, and can be changed depending on the application. For example, when the thickness of the coating formed by coating is 100 μm or less, the length from the base 13 to the top 14 of the triangular pyramid 12 is 30 μm or less, preferably 10 to 20 μm. . On the other hand, it may be longer than 30 μm if there is no limitation on the thickness of the coating.

Specifically, in addition to road facilities (road lines, etc.) and buildings, as well as vehicles, motorcycles, bicycles, baby carriages, and suitcases, portable items such as mobile phones, CD players, mobile computers, bags, pouches, pens, nails, etc. It can be used as a coating material that can be applied to a wide range of objects.

A mold 11 is placed as shown in FIG. 3 and a resin 15 is injected from above the mold 11 . The injected state is shown in FIG. The resin 15 is, for example, a translucent synthetic resin material. By using a translucent synthetic resin material, the irradiation light incident perpendicularly from the bottom surface of the prism 10 is retroreflected by the prism refraction angle and reflection angle of the prism 10 . Further, the irradiation light beam incident on the prism 10 at an appropriate angle of incidence is primarily reflected in multiple directions due to the refraction angle of the prism 10 with respect to the incident angle, and part of this primary reflected light beam is incident on the adjacent prism 10 at an appropriate angle. In addition, the light is secondary diffusely reflected in multiple directions at that refraction angle. As a result, the vehicle driver at night can predict danger with high visibility due to retroreflection and irregular reflection.

After the resin 15 is injected, a sheet material 16 is attached from above the mold 11 as shown in FIG. The material of the sheet material 16 is not particularly limited, and any material may be used as long as the resin 15 hardens and adheres to the sheet material 16 by UV irradiation, which will be described later.

After the sheet material 16 is attached to the mold 11, UV is irradiated from the sheet material 16 side as shown in FIG. By UV irradiation, the resin 15 in the mold 11 hardens and adheres to the sheet material 16 .

After the resin 15 adheres to the sheet material 16, the resin 15 is removed from the mold 11 together with the sheet material 16 as shown in FIG. With the removed sheet material 16 facing downward and the hardened resin 15 facing upward, a color is deposited on the surface 17 of the resin 15 (see FIG. 8). At this time, the color to be vapor-deposited is not limited to one color, and a plurality of colors may be vapor-deposited on each surface 17 . As a result, a colored reflective material can be configured by shining on the three surfaces on which colors are vapor-deposited.

By adding color to the resin 15, that is, the prism 10, it becomes possible to use a color reflective paint which has not been possible before. For example, red, yellow, or other unprecedented reflective paint can be used. Examples of possible products are new paint materials such as reflective pens and reflective paints. With current reflective paints, color vapor deposition is not possible due to glass bead powder (spheres), and color reflective paints cannot be produced. Glass bead powder is mainly used for white line paint on roads and as a consumer material mixed with spray can paint and used as a glowing paint, but it is not sold as a retroreflective sheet. . Prisms 10 (microprism powder) differ greatly from glass bead powder in that they are made of different materials, reflect luminance, and can be produced in different colors. Glass bead powder is made of glass (specific gravity 2.2 to 2.5) and heavy. On the other hand, the prism 10 is made of plastic (epoxy resin specific gravity 1.1 to 1.4). As a result, the density of the powder is more than doubled in kg, which is the same as that of the glass bead powder, so that the same or more effect as the glass beads can be obtained with a small gram.

Specifically, by adding vapor deposition colors such as metallic gold, red, blue, and green in addition to the color of the surface attached to the sheet material 16, the reflected color when exposed to light recurs with the vapor deposition color. Also, even if the light is not applied, the vapor deposition color will sparkle and diffusely reflect, so it can be used as a fashion item.

After depositing the color, the sheet material 16 is separated from the resin 15 as shown in FIG. After detaching the sheet material 16, the connected resin 15 is individually separated. The separated state is shown in FIG. Each resin 15 shown in FIG. 10 becomes the prism 10 . The surface 17 of the prism 10 has a color-deposited surface and a surface attached to the sheet material 16 . Here, the surface attached to the sheet material 16 is defined as the bottom surface.

FIG. 11 shows a front view of the prism 10 viewed from a direction in which two vapor-deposited surfaces are visible. Each surface is vapor-deposited with a color, and may be vapor-deposited with the same color or different colors.

FIG. 12 shows a rear view of the prism 10 shown in FIG. 11 as viewed from the rear. Surface 17 of prism 10 shown in FIG. 12 is a different surface than surface 17 of prism 10 shown in FIG. good.

13 shows a right side view of the prism 10 shown in FIG. 11 viewed from the right, and FIG. 14 shows a left side view of the prism 10 shown in FIG. 11 viewed from the left. As shown in FIGS. 13 and 14, each surface 17 is vapor-deposited with a color.

FIG. 15 shows a top view of the prism 10 shown in FIG. As shown in FIG. 15, three surfaces 17 of prism 10 are shown.

FIG. 16 shows the bottom surface of the prism 10 shown in FIG. As shown in FIG. 16, the bottom surface of the prism 10 is made of resin 15, and no color is vapor-deposited. Since no color is vapor-deposited, light incident from the bottom surface is reflected within the prism 10, and the reflected color returns to each surface on which color is vapor-deposited.

When the prism 10 is to be transported, the prism 10 is hardened by mixing polyethylene, polyester wax, etc. in advance and then transported. Hardening in this way makes it shatterproof when mixed with paint for colored reflectors and makes it safer to mix with paint. Specifically, when you put Prism 10 that has become solid when you use it in paint or ink, the wax melts and it revives as Prism powder. Since the prism 10 is thus solidified, it can be made circular or square. In addition, since it is not a powder, scattering can be suppressed during preparation.

The microprism powder production method and the microprism powder production method according to the present invention can not only protect the adherend but also predict danger due to retroreflection and irregular reflection by irradiating irradiation light, and the deposition color can be changed without exposing light. It has industrial applicability because it can create an optical design by glittering irregular reflection.

10 prism 11 mold 12 triangular pyramid 13 base 14 top 15 resin 16 sheet material 17 surface

Claims (6)

A microprism powder made of a translucent synthetic resin material,
A microprism powder characterized in that the shape of said microprism powder is a regular triangular pyramid or an isosceles triangular pyramid, and at least one or more colors are vapor-deposited on surfaces other than one surface thereof. The microprism powder is obtained by injecting the translucent synthetic resin material (resin) into a mold, attaching a sheet material to the mold from the side where the translucent synthetic resin material is injected, and irradiating UV. After hardening the translucent synthetic resin material, the sheet material with the hardened translucent synthetic resin material is peeled off from the mold, and the surface of the translucent synthetic resin material attached to the sheet material is covered with 2. The microprism powder according to claim 1, wherein the color is vapor-deposited, and the vapor-deposited translucent synthetic resin material is separated from the sheet material. 3. The microprism powder according to claim 2, wherein said one surface is a surface attached to said sheet material. 4. The microprism powder according to claim 2, wherein said UV irradiation is performed from said sheet material side. A microprism powder manufacturing method for manufacturing microprism powder made of a translucent synthetic resin material, comprising:
a step of injecting the translucent synthetic resin material into a mold comprising a plurality of equilateral triangular pyramids or isosceles triangular pyramids;
a step of attaching a sheet material to the mold from the side into which the translucent synthetic resin material is injected;
a step of curing the translucent synthetic resin material by irradiating UV onto the mold to which the sheet material is pasted;
a step of peeling off the sheet material to which the solidified translucent synthetic resin material is attached from the mold;
depositing at least one or more colors on the surface of the translucent synthetic resin material attached to the sheet material;
a step of detaching the translucent synthetic resin material on which the color is vapor-deposited from the sheet material;
A method for producing microprism powder, comprising: 6. The method of manufacturing microprism powder according to claim 5, wherein the UV irradiation is performed from the sheet material side.

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