JPS5935546Y2 - Automotive laminated glass with bonding surface printing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated glass with bonded surface printing, and relates to the laminated glass in which the printed portion is clearly visible from one side, but does not obstruct the eyes from the other side.

Many types of laminated glass with letters or patterns have been known.

This laminated glass is made by attaching letters or patterns to an interlayer film such as polyvinyl butyral that is inserted between glasses and bonding the pairs of glasses together, or by using such an interlayer film to bond the glasses together. There is a method in which two interlayer films are prepared, a sheet with letters or patterns is enclosed between the two interlayer films, and glass is bonded with these two interlayer films.

Interlayer films with letters or patterns on them, that is, those that are dyed, have minute irregularities (embossed) on the surface of the film to facilitate defoaming from the bonding surface of the glass.
It is not possible to print finely, and the character pattern lacks clarity.

Also, depending on the specifications, the interlayer film may be heated or molded, but if the film is deformed in this way, the printed surface of the film will be deformed and the printed surface will no longer be effective, making it unusable. It is towards.

Next, laminated glass in which a sheet printed with a pattern or characters is interposed between interlayer films and bonded together requires two interlayer films as described above.

This increases production costs. This item is inserted like a side witch between two sheets of interlayer film, so
During long-term use, the staining of the sheet may transfer to the interlayer.

Therefore, when one side is a colored interlayer film and the other side is a transparent interlayer film with printed characters, etc., the dyeing of the sheet is transferred to the transparent film, and the sharpness of the characters etc. deteriorates.

So when you look at the first glass, transparent interlayer film, sheet, colored interlayer film, and second glass layered from the outside from one side,
It is unclear and the effect of the colored interlayer film cannot be seen.

The present invention relates to a laminated glass in which printing is directly applied to the inner surface of one glass of the laminated glass in order to solve the above-mentioned drawbacks. This is a bonded-face printed laminated glass in which printing is applied to an area corresponding to the anti-glare colored portion of the interlayer film on the inner surface of the outer glass.

This printing may be of any type, such as letters or patterns, and is printed on the inner surface of the outer glass 1, for example, on the portion 3, by various methods such as baking and vapor deposition.

This printing is applied at position 13 on the inner surface of the outer curved glass 11, similar to the flat glass.

In this case, when an organic substance such as an epoxy paint is used as the printing ink, it is cured by heating to 170 to 180°C after printing.

Furthermore, for ceramic paints or raster paints containing precious metals, baking is performed at 500 to 700°C after printing.

After the printing on the inner surface of the outer glass 1 is completed, the interlayer film 4 is placed between the outer glass and the inner glass 2 so that the colored part 5 overlaps the printed part 3, and the two glasses 1 and 2 are temporarily overlapped. Glue the two pieces of glass together using Okima membrane using a conventional method such as autoclaving.

The same applies to curved glass, and in the drawings, the part corresponding to flat glass is represented by a number with °'io'' added.

In making this laminated glass, we used an interlayer film 4 with part 5 colored blue, and printed letters on part 3 with white paint C-5301 manufactured by Sokka Shiki Co., Ltd., Tokyo. When viewed from the outside glass side, it is difficult to see the back side of the glass through the colored portion of the interlayer film, whereas the printed white characters stand out from the colored portion and appear extremely clear.

On the other hand, when looking outside through the outer glass and the inner glass, the anti-glare properties are erased due to the colored effect of the colored portion, and the white color printed with the colored film on the printed surface is erased.

Therefore, the printed part is particularly difficult to see from the inside.

Therefore, although the printed portion can be recognized very well from the outside, recognition from the inside cannot be expected.

In the above-mentioned printing, the screen printing method can be used to change the number of openings of the mesh screen per unit area of the printing target, that is, to make the mesh coarser.

The character "C" 3C printed in this manner in FIG. 3 is entirely represented in the form of a mesh by a large number of orthogonal parallel lines as shown in FIG.

Furthermore, a part of it has a mesh 6 in which the printed part 7 and the opening part 8 are orthogonal to each other and parallel to each other, as shown in FIG.

As is known in screen printing, the precision of the printed surface can be achieved by increasing or decreasing the number of mesh lines per unit printing area, so by reducing the number of mesh lines, the area of the unit opening can be increased. Become.

When viewed from the outside, the letter "C" is easily recognized due to the color contrast of the colored parts, and when viewed from the inside, the letter "C" has many openings. Although the halftone dots without the dots are opaque due to the colored interlayer film, as mentioned above, one does not notice it much, but at the openings, the outside scenery can be seen through the apertures.

In particular, an automobile windshield printed in this manner allows the letter "C" to be easily recognized from the outside like ordinary mesh printing, and is protected from glare by the colored part from the inside, while the mesh of the character structure is visible from the inside. Through the opening, traffic lights and other external scenery visible above can be recognized.

In this case, by printing by changing the size of the unit aperture of the mesh, it is possible to print halftone dots similar to photographic printing, and it is possible to print various patterned photographs and also to clearly recognize the outside scene from the inside through the printed surface.

As described above, in the laminated glass of this invention, letters and patterns are printed directly on the glass, and the printing ink or paint is completely fixed to the glass by curing or baking, so the printing is clearly expressed in detail, and the interlayer film When laminated with this method, the printed color does not transfer to the interlayer film, and the printed surface can be kept clear for a long time.

[Brief explanation of the drawing]

Figures 1 and 2 are exploded side views of the laminated glass of the present invention. Figure 1 is a flat glass, Figure 2 is a curved glass, and Figure 3 is a front view of the glass of the present invention. FIG. 4 is an enlarged view of the printed characters, and FIG. 5 is an enlarged view of the mesh screen. 1.2 glass, 3: printed part, 4: intermediate film, 5: colored part, 6 double mesh screen, 7: printed part, 8: opening part.

Claims (2)

[Scope of utility model registration request] (1) In a laminated glass that is bonded with an interlayer film that is partially interposed with an anti-glare color, printing is applied to the area corresponding to the anti-glare colored portion of the interlayer film on the outer glass inner surface of the glass. Automotive laminated glass with bonded surface printing. (2) The printing applied to the area corresponding to the anti-glare colored portion of the outer glass on the inner surface of the outer glass is configured in the form of halftone dots whose density can change. Automotive laminated glass with bonded surface printing.