CZ280779B6 - Process of forming garnet glass melt - Google Patents

Abstract

This method of processing garnet melt is used for the production of art and decorative items and utility products which is filled into the ampoule from a melt other than garnet and is shaped into a semi-product, then it is cooled to a temperature below the softening point of the melt and then it is heated again to the shaping temperature and the shaping is completed to the required shape. After the light shade is achieved the semi-product is re-shaped in a mould, preferably wooden.

Description

Method of shaping garnet glass

Technical field

The invention relates to a method of shaping garnet glass, which is intended primarily for the production of art and decorative articles, but also utility products.

BACKGROUND OF THE INVENTION

According to the prior art, the molten glass is processed by hand or by machine. In manual processing, the glass is molded either freely by hand with different tools, i.e. into a free space, or molds are used for molding, especially when it is necessary to give the product an accurate, repeatable shape. The glassmaker takes the necessary amount of glass onto the glass pipe to form the flask, which is the starting shape for each subsequent shape. In another operation, the cup or tumbler is shaped into a mold, and the stem and cup of the cup are each formed from the molten glass. The above procedure applies to conventional colorless glass.

Methods for shaping special types of glass, e.g. satin glass, transparent glass, marble glass, agate glass, jasper glass, carnelian glass and other kinds. When shaping agate glass, which imitates semiprecious agate, or. different types of marble, glassblower blows out of opaline glass flask, and on it sticks irregularly distributed colored layers of glass. It then warms up the flask, partially deflates and layers new batches of stained glass onto the previous substrates. This process is repeated according to the desired colors and layers and then it overlaps everything with colorless glass, rolling and shaping. Carnelian imitations are achieved by melting the glass batch from individual layers of cryolite and copper ruby glass. Well melted glass does not homogenise and does not blow. The enamel is cloudy, red colored, with white and brown spots and richly veined. Furthermore, a method for producing and molding satin glass is known whose particular gloss resembles an satin cloth. The glassmaker's assistant creates a suitable funnel from transparent and / or colored glass into which the glassmaker inserts a embossed decorated core, e.g. made of opal glass or black glass, blowing well joints, heats in the furnace and further shapes. The holes in the turbid core are closed by a translucent funnel glass to create a pattern in the glass. By matting this product, a beautiful satin gloss is achieved. In the processing of colored glass it is also used so-called acceptance technique, where a layer of colored glass is pulled over crystal glass or other base glass. The colored glass is pumped from the pan of the molten colored glass into a whistle blown glass, it is uniformly distributed over the surface of the glass and the glass is thus shaped into the desired shape.

Thus, each type of glass requires a special technological process of glass processing and subsequent shaping, which must be precisely followed in order to achieve the desired resultant effect. However, the known and used glass processing and shaping techniques are not suitable for processing garnet glass, since they do not guarantee the full reproducibility of the desired final color of the garnet glass, which can range from yellow-orange to deep red.

-1GB 280779 B6

SUMMARY OF THE INVENTION

The above-mentioned disadvantages are solved by a method of processing garnet glass in which the garnet glass is applied to another glass according to the invention, which consists in that the superimposed glass formed by depositing the garnet glass on a non-garnet glass flask is preformed into a preform. It is allowed to cool to a temperature below the softening point of the molten glass and is then reheated to the forming temperature and creep to the desired shape. In order to achieve a light color shade, the present invention proceeds by preforming the blank into a mold, e.g. wooden.

The advantage of the method according to the invention is, on the one hand, the reproducibility of the color shade and, on the other hand, the possibility of achieving any shade from the color range from light to dark orange, while maintaining the full reproducibility of such a shade.

Examples

Example 1

A pomegranate melt having a temperature of about 1400 ° C was charged to the base glass flask. This material has been preformed without the use of a mold to approximate the shape of a future product when the enamel layer was relatively thick. The resulting stock was naturally cooled to a temperature below the glass softening point, i.e., to about 800 ° C. Then, the material in the melting furnace was reheated to the forming temperature, i.e. a temperature of about 1350 ° C, and blow molded to the final shape. This piece, the chalice, had a deep red color. In the final phase the stem and pumpkin were creeped from the molten glass.

Example 2

A melt of garnet glass having a temperature of about 1400 ° C was charged to the ordinary glass bulb and the material was preformed into the shape of a future product when the glass layer already corresponded to the future product. This still semi-finished product was naturally cooled to a temperature below the glass softening point, i.e. to about 800 ° C. Subsequently, the material was again heated in the melting furnace to a forming temperature, i.e. a temperature of about 1300 ° C, and blow molded to the desired shape. The resulting cup of light red color was then completed by shaping the stem and bottom of the dispensed glass.

Example 3

A melt of garnet glass having a temperature of about 1400 ° C was charged to the ordinary glass bulb and the material was preformed and then formed into the desired shape of the future product. The resulting cup of yellow-orange color was then completed by shaping the stem and bottom.

-2GB 280779 B6

Industrial applicability

The invention is intended both for the production of art and decorative articles, as well as utility products.

Claims (3)

Method for processing garnet glass, in particular for the production of art and decorative articles, but also of utility products, by adopting, where the garnet glass is applied to another, especially colorless glass, characterized in that the garnet glass is applied to a glass flask other than garnet glass. It is then preformed, then allowed to cool to a temperature below the softening point of the glass and then reheated to the molding temperature and creep to the desired shape. 2. A method according to claim 1, wherein the preforming is carried out in a mold. A method for processing garnet glass according to claim 1, characterized in that the preforming is carried out in wooden form.