JP2009247465A - Retroreflection batch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retroreflection batch capable of beautiful printing representation of wide range from bright colors with high chroma to pale colors such as pastel colors. <P>SOLUTION: The retroreflection batch comprises a reflecting portion 2 reflecting the light 801 entering form the surface of a display portion consisting of a transparent material having a printing face and a base material 220 reflecting white light in the open type glass bead 201 constituting the reflecting portion and reflecting function consisting of white color to make the display portion sharp, the refraction index is decided such that the incident light reflects by the open type glass bead as a lens, and white color base material 220 having function for reflecting the white color is arranged in the lower layer of the open type glass bead. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a retroreflective batch applicable to clothes, hats, shoes, socks, belts, bags, etc., wall surfaces of buildings, pillars, ceilings, floors, windows, stairs, handrails, automobiles, motorcycles and the like.

  On the other hand, retroreflective materials are often used as safety equipment such as display devices for traffic signs and reflective vests worn at construction sites, and reflect brightly on automobile headlights and surrounding light sources without using electrical lighting. This ensures visibility and improves safety.

  A display device having retroreflective performance generally uses a retroreflective sheet that has been subjected to character processing and printing as a display surface by being attached to a plate-like support. The retroreflective sheet is used not only for road signs shown in FIG. 5, but also for signboards, barricades, tapes, automobiles, etc. on construction sites taking advantage of its reflection performance as in the utilization examples shown in FIGS. As accessories, as shown in FIG. 2, what is attached to a batch is also used.

The retroreflective sheet used as the material of the retroreflective material is roughly divided into two types. One is a prism type in which a resin is molded into a triangular pyramid, and one is a glass bead used as an optical convex lens.
Further, the glass bead type retroreflective sheet is roughly divided into two types, an encapsulated lens 320 shown in FIG. 4 and an open bead type.

  As shown in FIG. 2 (2), the conventionally known open bead-type retroreflective sheet has a glass bead (201) serving as an optical convex lens that refracts incident light (801) (306), and glass The light is condensed at one point so as to focus on the bottom surface (308) of the bead. The distance through which light reaches the focal point is derived from the refractive index of the glass light used for the glass beads.

  Next, the base material (220) such as aluminum vapor deposition and high light reflectance paint, resin, metal, paper, cloth, etc., provided on the outer periphery under the glass beads, acts as a reflector and focuses light. To reflect. That is, the conventional technique is to use the glass beads (201) with a refractive index of 1.92 to 1.93.

  In this case, the light reflected by the base material (220) is refracted again (310) and returned toward the light source (8) (802).

The open bead type retroreflective sheet has excellent wide-angle retroreflective properties, which are indispensable for improving the visibility when the reflective material is mounted, including low manufacturing cost and good workability.

Therefore, the present invention has devised a retroreflective batch in which the vividness of the color of the display surface is enhanced by an open bead type retroreflective sheet that reflects light with higher whiteness.
JP 2002-67208 A JP 2004-301977 A JP 2004-36161 A JP 2005-181484 A

  The above prior art has been pointed out due to the following problems.

  In the conventional retroreflective batch, the encapsulated lens type retroreflective sheet (320) having high printing affinity was used. However, the encapsulated lens type retroreflective sheet (320) is an optical convex lens as shown in FIG. The glass beads (301) that play a role refract the incident light (801) (306), and the focal point (308) is formed at one point by the aluminum vapor deposition layer (304) provided on the outer periphery of the binder layer (302). After condensing and reflecting the aluminum vapor deposition layer (304) to the glass bead (301) as a reflector, it is returned to the light source (8) by the refraction of the glass bead (301) (802). ), The mechanism of retroreflection. Since the retroreflected light color contains the silver color of the aluminum vapor deposition layer (304), the vividness of the color of the printing ink layer (501) provided on the display surface is lost and the color is determined. It has been pointed out that it is not possible to produce colorful printed expressions.

On the other hand, when the retroreflective batch provided with the conventional open bead type retroreflective sheet is directly printed on the surface of the open bead type retroreflective sheet, as shown in FIG. 7, the refractive index of the glass beads (301). As a result, the retroreflective performance is lost, so that the result cannot be printed.
Therefore, it has been pointed out that only a monotonous product can be produced without printing, and the color of the base material of the open bead type retroreflective sheet can be used as it is as a color of the display surface as it is, and it can be used as a batch showing only the color.

  Furthermore, as shown in FIG. 8, the retroreflective batch provided with the conventional open bead type retroreflective sheet is wetted with water when the surface is an open bead type retroreflective sheet as described above. Then, since the refractive index of the glass beads (301) also changes, there is a problem that the retroreflective performance is lost particularly at night in the case of rain that is likely to cause a traffic accident.

  In order to solve the above problems, the present invention is provided with a reflective part having a member that generates a reflected light with high whiteness, provided with a printable transparent resin on the display part, and further includes an upper joint part and a lower part for mounting. Provided is a retroreflective batch having a colorful display portion composed of joint portions.

  The reflective part determines the refractive index so as to be retroreflected by an open bead type lens, and provides an open bead type retroreflective sheet provided with a base material having a function of reflecting the open bead with high whiteness.

  The present invention provides a retroreflective batch capable of expressing a colorful display portion by high whiteness retroreflection. In other words, compared to conventional retroreflective batches, a wide range of beautiful printed expressions from bright colors with high saturation to pale colors such as pastel colors are possible, and at the same time, the reproducibility of illustrations, photographs, characters, etc. has been improved.

  Furthermore, since the present invention performs printing on a translucent film and provides it as a display unit, it is no longer necessary to perform printing directly on the open bead type lens of the reflection unit as in the prior art. In addition, it also serves to prevent the display film from getting wet with the open bead-type lens and water, making it possible to perform complex printing, and even if the surface gets wet, the retroreflective performance is not lost for a long time. Thus, a retroreflective batch using an open bead type retroreflective sheeting which does not deteriorate over a long period of time is possible.

The present invention includes a retroreflective batch shown in FIG. 1 as an example to which an open bead type retroreflective sheet is applied. The display surface of the retroreflective batch includes a display portion (1) made of a transparent material having a printing surface, a reflection portion (2), an upper joint portion (6), and a lower joint portion (7). The reflective portion (2) is provided with an open bead type retroreflective sheet that generates reflected light with high whiteness, which is a feature of the present invention.
For the display unit (1), a transparent resin layer of PET, acrylic, polyvinyl chloride, olefin or the like on which the characters, marks, patterns, photographs, illustrations, paintings, textiles, etc. are printed on the back side or the front side will be adopted. More preferably, the display unit (1) is made of a material such as a transparent synthetic resin that can be used even in the rain. In this case, the display unit (1) can be used even in rainy weather. Will be understood. Of course, various materials can be used by those skilled in the art as long as the material is printable and transparent.
Furthermore, it is also possible to provide a surface protective layer such as laminating as required.

As shown in FIGS. 2 and 3, the reflective portion (2) is composed of a plurality of glass beads (201), and the base of the glass beads (201) is formed by a transparent adhesive layer (210). It is fixed to the material (220). An aluminum-deposited reflective layer (304) that reduces the vividness of the display surface (5) of the encapsulated lens-type retroreflective sheet (320) of FIG. 4 used in the conventional retroreflective batch is not provided, and glass beads ( 201), the refractive index is set so as to realize retroreflection (in this case, the refractive index is 1.93).
Therefore, as shown in FIG. 4, the light (8) enters the glass bead (201) within the glass bead (201), and the reflected light is reflected from the reflection point (308). (802).
FIG. 3 shows a situation where the batch is formed. The reason for the space is that a space is formed between the upper joint (6) and the lower joint (7) as shown in (3) and (4) of FIG.

  And as shown in (2) of FIG. 1, the display part (1) and the reflection part (2) are overlaid on the upper joint part (6), and the edge of the display part (1) and the reflection part (2) is placed on the upper part. It winds in the back side of a junction part (6), pushes a lower junction part (7) inside an upper junction part (6) like (3) of FIG. 1, and joins (9) of (4) of FIG. As a result, the display unit (1), the reflection unit (2), the upper bonding unit (6), and the lower bonding unit (7) are all fixed.

  The upper joint (6) and the lower joint (7) are made of a resin such as PET, acrylic, ABS, polyethylene, polypropylene, vinyl chloride, polycarbonate, olefin, etc. in addition to metals such as steel, aluminum, and stainless steel (601) (701). ) Is used.

In the present invention, the focal length due to the effect of the optical convex lens of the glass beads (201) is applied by setting the refractive index as the minimum value of the incident angle of total reflection necessary for retroreflection. Further, in order to enhance the reflection effect at the point (210) where the glass beads (201) are focused, the substrate (220) having a high whiteness and a high reflectance is applied to the glass beads (201) by the adhesive layer (210) having a high transparency. It is fixed. For this reason, since the white color of the base material (220) is also reflected as white light, retroreflection with high whiteness is possible.
Various methods are used for attaching the glass beads to the base material (220). As an example, the glass beads are uniformly sprayed and temporarily adhered to the film for processing on the base material. Next, the glass bead surface of the process film is bonded to a white cloth with a transparent acrylic or urethane adhesive. Subsequently, it can form by peeling off the film for process temporarily bonded.

  Therefore, the display surface (1) having the printing surface comes to clearly emerge due to the white color. In the present invention, a retroreflective batch capable of reproducing unexpectedly high whiteness and vivid colors can be obtained by drastically removing the aluminum vapor deposition that has been used to increase the reflection brightness of the retroreflective material. It is. The substrate (220) may be a white cloth-like material, and paper, resin, metal, or the like can be used. As a result of the test, it was found to have a clear reflection function.

  That is, since the base material (220) for fixing the glass beads (201) is white, in this case, the conventional encapsulated lens type retroreflective sheet (320) in which the aluminum deposition reflective layer (305) shown in FIG. ), The whiteness of the ground color of the display surface can be increased, and a retroreflective batch printed with vivid and beautiful colors can be manufactured.

  Although the present invention has been described above, the present invention is not limited to the above-described embodiments, and various changes can be made by the operator within the scope of the technical idea of the present invention.

An application example of the retroreflective sheeting of the present invention to a badge will be shown, and the mounting order will be described. The principle and structure of the retroreflective sheet of this invention are shown. The detailed principle and structure of the retroreflective sheet of this invention are shown. The detailed principle and structure of a conventional retroreflective sheet are shown. A road sign using a conventional retroreflective sheet is shown. The use of the construction site using the conventional retroreflective sheet is shown. The utilization of the back of a car using a conventional retroreflective sheet is shown. The production status of a batch using a conventional retroreflective sheet is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 2 Reflection part 201 Glass bead 220 Base material 6 Upper junction part 7 Lower junction part

Claims (2)

  A display unit made of a transparent material having a printing surface, a reflection unit having a member that retroreflects incident light from the surface and emits white, and an upper junction and a lower junction that attach the display unit and the reflection unit. The retroreflective batch has a retroreflective function to make the display portion clear.   The reflection portion is an open bead type glass lens type reflection layer, and the refractive index is determined so that incident light is retroreflected by the glass lens, and the glass lens has a function of producing white reflected light. A retroreflective batch according to claim 1, further comprising a substrate.

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