JPS58176147A - Coloring and decorating method of glassware - Google Patents

Abstract

PURPOSE:To form a delicate and sharp colored decorating pattern in a glassware easily at a low cost, by pouring a transparent colorant in a pattern engraved on the rear of a glassware by the sandblasting, and hardening the colorant under heating. CONSTITUTION:A pattern 4 is engraved on the rear 3 of an unfigured dish 1 of crystal glass containing about 24% lead oxide by sandblasting, and a mixture solution of an epoxy resin solution containing a transparent colorant 7 with a hardening solution is then poured into the pattern 4 to wet the whole pattern 4. The mixture solution in the pattern 4 is then dried and hardened by heating at about 70 deg.C for about 50min. The resultant hardened colorant 7 is thickly collected in the bottom 5 of the pattern 4, and sticks thinly to a sidewall part 6. Therefore, the pattern 4 having a delicate solid feeling with light and shade colors when viewed from the face side 2. A colorant obtained by powdering a colored low-melting glass having an expansion coefficient almost equal to that of the glassware 1, and forming a paste with a vehicle may be used as the colorant 7.

Description

[Detailed description of the invention] The present invention relates to a method for decorating glassware.

Various methods have been used to decorate glassware. For example, there is a method of cutting cut glass, which is known as a high-quality product, and decorating it by sandblasting or etching it into a frosted glass shape, and a method of adding an uneven pattern to the surface of the glass during press molding.

9 Colored decorations include painting using transfer paper, pigments, etc. However, these 7A Tomoes are flat and lack the image of luxury goods.

Recently, glassware that has been partially colored by forming an uneven pattern on the glassware during press molding and then spraying colored plastic onto the pattern has become commercially available. but.

The uneven pattern produced by press molding involves transferring the unevenness carved into the mold onto the molten glass, so it is difficult to create delicate and sharp patterns.

Thin line 1 For example, thin lines such as leaf veins have small irregularities and are not clear. Therefore, when such an uneven pattern is colored, the thin lines become even more unclear, and the effect of the uneven pattern is lost. This is especially noticeable when the color is dark.

In addition, in order to make products with different patterns using press molding,
It is extremely expensive to carve patterns into molds, as it is necessary to prepare molds with different patterns engraved on them, and then replace the molds for molding. Furthermore, the particularly thin lines of the pattern engraved on the mold are subject to significant wear, making maintenance and replacement of the mold cumbersome.
Work efficiency is also low.

The present invention not only allows a desired pattern to be easily obtained, but also
The pattern is extremely sharp, and it is a decorative method that allows even the dark lines to be colored extremely clearly.

The present invention will be described below according to nine examples.

First, a plain (no uneven pattern) plate is formed from so-called crystal glass, which contains about 24 grams of fertilized lead.

On the back side, a pattern was carved by sandblasting as shown in FIGS. 1 and 2, and the pattern was colored.

FIG. 1 is a plan view thereof, and FIG. 2 is an enlarged cross-sectional view taken along line A- in FIG. 1. A pattern 4 is carved on the back side 3 of the plate 1 by sandblasting. 4 carved patterns on the front side of the plate 1 2. That is, when viewed from the side on which food or the like is placed, it appears white and frosted glass-like. A liquid mixture of an epoxy resin liquid containing a transparent colorant and a curing liquid is injected into the pattern 4 so that the entire pattern is wetted.

Next, after drying at about 20°C for about 20 minutes, drying at about 70°C
It was cured by heating at C for 50 minutes. The colorant (epoxy resin) 7 thickly reaches the bottom 5 of the pattern 4 and thinly adheres to the 9° side wall 6 and solidifies. When viewed from the front side 2 of the plate, the entire pattern 4, which was frosted glass-like, appears transparent, and because the thickness of the coloring agent 7 differs locally, the coloring 9 has shading, making the pattern appear three-dimensional. . In particular, the thin side wall portion 6 of the epoxy resin 7 reflects light and appears to shine.

In the method of the present invention, the depth of the pattern 4 to be carved is sloped to 9
The colorant can be colored in thick and thin layers to give it shading and a subtle three-dimensional effect.

According to the method of the present invention, colored decorations with any pattern can be made as long as a mask is prepared, and the mask production 1 is extremely simple and costs are extremely low. thin line.

Marks, characters, etc. can also be attached very clearly.

When molding glassware, there is no need to carve a pattern into the mold. Therefore, maintenance and management of the mold is easy.

It is advantageous in terms of cost and work efficiency. or.

For glassware that is hand-blown without the use of molds,
A colored pattern can be added in exactly the same way.

In addition to 1 synthetic resin, colorants used in the method of the present invention include:
A colored low-melting glass having approximately the same coefficient of expansion as the glassware may be used. Low melting point glass is usually made into a fine powder and used in the form of a vehicle in the form of a base, but in the method of the present invention, it is used in a state in which it is easy to flow by using a large number of vehicles.

Although the above explanation has been made regarding the case of 9 colors, when a colorless epoxy resin or a colorless low melting point glass is used.

The sandblasted parts shine through reflection, just like cut glass. This is particularly noticeable in the case of glass containing lead oxide and having a high refractive index.

The method of the present invention can be applied not only to glass containers but also to plate glass for decoration or for advertising purposes.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the embodiment, and FIG. 2 is a partially enlarged cross-sectional view. 1...Plate 4...Pattern 7...
・・・・・・Colorant applicant Atsushi Yagi calculation l Figure #21 Illusion

Claims (1)

[Claims] A method of coloring and decorating glassware in which a pattern is engraved on the back of the glassware using sandblasting, and transparent coloring agent is poured into the engraved pattern to color it.