JP2597896Y2 - Glass with highly transparent resin layer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass having a highly transparent resin layer in which a highly transparent resin sheet such as a hologram is adhered to a window glass for an automobile, for example.

[0002]

And 2. Description of the Prior Art device, such as a center high-mounted Stop lamp provided in the automobile rear window lower edge portion or the like, or as an in-vehicle display methods, such as head-up display, or as an anti-glare device, which utilizes a hologram in recent years Attention has been paid. Holograms necessary for constructing a display device using such a hologram are arranged in various places according to the application, but are often used by being attached to a windshield, a rear glass, or the like, or incorporated. . For example, in a high-mount stop lamp for an automobile, a hologram is arranged at a predetermined position on a rear glass and used as an optical element. In such a case,
The hologram is often used around the rear glass for protection when mounting the glass and for improving the appearance, usually avoiding the black ceramic print portion, or removing the ceramic print at the position where the hologram is to be attached.

[0003]

In such a hologram-attached glass, as a method of removing a ceramic print, a portion which is not printed at the time of printing is provided without being printed at the time of printing, and an unprinted portion (opening) is previously provided in the ceramic. Alternatively, a method of chemically or physically removing the ceramic from the glass surface after printing can be used. When attaching a hologram, it is a general practice to provide an unprinted portion in the ceramic print surface and to attach it to the hologram in order to improve design. The hologram to be used usually has poor physical abrasion resistance, or it is often used as a chemical protection to affix thin glass, hard-coated polyethylene terephthalate, or the like together on the hologram.

However, in this method, if the unprinted portion is larger than the hologram, the appearance may be poorly balanced due to the pasting. Conversely, if the hologram is enlarged and the glass is attached to the car to solve the problem, the hologram can appear to be attached to all the unprinted parts when viewed from the outside. It is desirable because the design property or the accuracy of the pasting can be improved, for example, the pasting portion at the peripheral portion can be hidden. On the other hand, in this method, the shape followability of the protective film made of glass or polyethylene terephthalate, etc. added for protecting the hologram is generally poor. was there.

That is, as shown in FIG. 3, an unprinted portion (opening) 8 of the ceramic print 2 formed on the glass 1
When the hologram 4 is adhered thereon, even if the hologram 4 is covered with the protective layer 7 made of a resin material, the peripheral green portion of the hologram 4 rises and the adhesion becomes poor, which affects the directionality and refraction characteristics of the hologram 4. However, a predetermined function may not be obtained.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and is intended to ensure that a transparent sheet such as a hologram is closely adhered to a glass plate provided with a coating layer such as a ceramic print and is attached with high precision. It is an object of the present invention to provide a glass with a highly transparent resin layer that can be used.

[0007]

In order to achieve the above object, the present invention has a coating layer that partially covers a glass plate,
In a glass plate structure provided with a highly transparent resin layer in a portion where the coating layer is not provided, a portion in which the resin layer is provided is provided with a transparent film layer having substantially the same thickness as the coating layer, The resin layer is provided on a transparent film layer.

In a preferred embodiment, the glass plate is a window glass for an automobile, the covering layer is made of a ceramic print covering a peripheral portion of the window glass, and the highly transparent resin layer is made of a hologram. Features.

In a further preferred embodiment, the covering layer is printed so that an opening smaller than the size of the hologram is formed by an unprinted portion, and the opening is provided with the hologram. It is characterized by having.

Another preferred embodiment is characterized in that a protective layer for physical or chemical protection of the resin layer is provided on the highly transparent resin layer.

In another preferred embodiment, a material having an ultraviolet absorbing or reflecting function is used for the transparent film layer.

[0012]

[Function] When attaching a hologram in a ceramic print, remove the ceramic print in the attached portion and form a high optically transparent layer of the same or greater thickness as the ceramic print, and attach the hologram. Local steps in the plane have been reduced to prevent the hologram from floating. In this specification, the term “transparency” includes not only a member that transmits light in a straight line but also a member that transmits light by diffracting such as a hologram, and a hologram is used as this member. In this case, light is transmitted including that having light wavelength selectivity.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view showing an example of the hologram sticking glass according to the present invention. 1 is a glass, 2 is a ceramic print, 3 is a transparent layer for thickness correction, 4 is a hologram, and 5 is a glass for protection. As the hologram material to be used, for example, polyvinyl carbazole, gelatin dichromate, a photo resist, a photopolymer, or the like can be used. The hologram 4 can be used not only for the emboss type, which is currently widely used, but also for the Lippman type, Fresnel type, rainbow type and other holograms.

The transparent layer 3 used in the present invention is made of acrylic resin, urethane resin, EVA, photopolymerizable resin, ultraviolet curable resin, epoxy resin, or the like.
A material having a thickness of 50 μm, a visible light transmittance of 70% or more, and a refractive index close to that of glass, PVB and holograms can be widely used. It is preferable because the hologram can be shortened, and it is very desirable to have a function of cutting ultraviolet rays in order to prevent the hologram from being deteriorated by ultraviolet rays.

At this time, the thickness difference between the ceramic print 2 and the transparent resin layer 3 used in the present embodiment is suitably 0 to 10 μm, particularly preferably 5 μm or less. If it is difficult to apply the above-mentioned material for the transparent layer 3 only to the inner portion of the ceramic print 2, the transparent layer 3 may be provided up to the outer portion of the ceramic print 2 as shown in FIG. No problem. In view of such a film thickness, it is advantageous in terms of work to apply the material of the transparent layer 3 and to cure the material, but the transparent layer 3 is formed into a film having a desired thickness and a desired size. If you can get
There is no particular limitation on the transparent layer 3.

As shown in FIG. 2, for example, such a hologram laminated structure is formed of a black opaque coating layer (ceramic print 2) formed on the green portion of the glass 1 of the rear window 10 of the vehicle for protection and appearance improvement. It is provided on the stop lamp mounting portion 6.

As a method of producing such a hologram-attached glass, an opening is formed at a predetermined position of a coating layer (ceramic print 2) of a glass plate, and a transparent layer 3 is applied or formed thereon. In this case, the transparent layer 3 is cut into a shape to be used, laminated or pasted at a predetermined position, a hologram is superimposed thereon and pasted, and heating, pressure bonding, or ultraviolet irradiation is performed as necessary.

Example 1 An ordinary float glass having a thickness of 2 mm, which was cut and chamfered into a predetermined shape, was prepared, polished with cerium oxide, rinsed sufficiently with pure water, and dried by blowing nitrogen gas. Then 10
The ceramic print 2 was printed so that an unprinted portion of 0 mm square was formed, and was sintered at a predetermined temperature to prepare a glass for application. At that time, the film thickness of the ceramic print 2 was 15 μm. The transparent layer 3 was prepared by spin-coating a urethane resin to a thickness of about 15 μm on a substrate made of polyethylene terephthalate. The hologram 4 was prepared as a 110 mm square Fresnel type product, and an adhesive was applied to one surface thereof.

After the opening (unprinted portion) of the ceramic print 2 is polished with cerium oxide, rinsed sufficiently with pure water, and dried by blowing nitrogen gas, the urethane film (transparent layer 3) contacts the glass 1. Then, the film was adhered with a rubber roller heated to 80 ° C. so that no air remains, and after the temperature was lowered to room temperature, polyethylene terephthalate was peeled off from the urethane film. Thereafter, the hologram 4 was similarly pressed with a roller so that no air remained. The finished hologram sticking glass is ceramic print 2 and glass 1
It was good in appearance without floating on the boundary surface with, and had little change in reproduction wavelength, half width and diffraction efficiency.

Example 2 Instead of urethane as the transparent layer 3, an ultraviolet-curing resin is applied to glass instead of urethane, and the resin is cured by irradiating ultraviolet rays. The same operation and effect as in Example 1 were obtained.

[0022]

[Effects of the Invention] As described above, according to the present invention,
It is possible to reduce the floating at the boundary caused when the hologram is attached due to the step between the ceramic print and the glass. An optical function is achieved. Further, by providing a film having a function of absorbing ultraviolet light as a transparent layer or on the hologram, it is possible to suppress a change in the characteristics of the hologram due to ultraviolet light.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a hologram sticking glass according to the present invention.

FIG. 2 is a front view showing an example in which the hologram-bonded glass according to the present invention is applied to a rear window of an automobile.

FIG. 3 is a cross-sectional view for explaining a disadvantage of the related art.

FIG. 4 is a cross-sectional view showing an example of the hologram sticking glass according to the present invention.

[Explanation of symbols]

 1: glass 2: ceramic print 3: transparent layer 4: hologram 5: glass for protection.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B32B 17/10 B60J 1/00 C03C 27/12 G02B 5/32

Claims (5)

(57) [Scope of request for utility model registration] In a glass plate structure having a coating layer that partially covers a glass plate and a resin layer having high transparency provided in a portion where the coating layer is not provided, a portion where the resin layer is provided is provided. Is a glass with a highly transparent resin layer, wherein a transparent film layer having substantially the same thickness as the covering layer is provided, and the resin layer is provided on the transparent film layer. 2. The glass sheet is a window glass for an automobile,
The glass with a resin layer according to claim 1, wherein the coating layer is formed of a ceramic print that covers a peripheral portion of the window glass, and the highly transparent resin layer is formed of a hologram. 3. The method according to claim 1, wherein the coating layer is printed so that an opening smaller than the size of the hologram is formed by an unprinted portion, and the hologram is provided in the opening. The glass with a resin layer according to claim 1. 4. The glass with a resin layer according to claim 1, wherein a protective layer for physically or chemically protecting the resin layer is provided on the highly transparent resin layer. 5. A material having an ultraviolet absorbing or reflecting function as said transparent film layer.
3. The glass with a resin layer according to any one of 3.