The patterns of embossed craft glass are made through a series of complex processes.
First of all, the raw materials of glass are mainly quartz sand, soda ash, limestone, etc. After mixing these raw materials in a certain proportion, they are melted in a high-temperature furnace. The temperature of the furnace is usually as high as thousands of degrees Celsius, so that the raw materials are completely melted into liquid glass.
When the glass liquid reaches the appropriate temperature and fluidity, it will be led out of the furnace and enter the embossing equipment. The embossing equipment usually consists of one or more pairs of rollers engraved with specific patterns. These rollers are generally made of hard alloy materials, and the patterns on them are made by precision machining or laser engraving.
When the glass liquid passes through the rollers, it is subjected to huge pressure and is squeezed into shape by the patterns on the rollers. In this process, the temperature and pressure of the glass need to be precisely controlled. If the temperature is too high, the glass may be over-softened, resulting in unclear patterns; if the temperature is too low, the glass may not be fully deformed and it is difficult to form a complete pattern. At the same time, the size of the pressure will also affect the depth and three-dimensional sense of the pattern.
After embossing, the glass will be cooled quickly to fix the pattern. The cooling methods usually include air cooling and water cooling. The cooling speed should be moderate. Too fast cooling may cause stress in the glass, affecting its strength and stability; too slow cooling may cause the pattern to deform or defects on the glass surface.
In order to improve the quality and aesthetics of Embossed craft glass, subsequent treatments may be carried out. For example, the glass surface is polished to remove tiny defects caused by the embossing process to make the glass smoother; or it is coated to increase the wear resistance, corrosion resistance or special optical properties of the glass.
In short, the pattern making of Embossed craft glass is a complex process that combines high-temperature melting, precision machining and precise control technology. Each process requires strict operation and quality control to produce high-quality and beautiful Embossed craft glass products.
