Multi-purpose glassware made of soda-lime silicate glass, colorless and transparent containers, the iron content of glass is generally less than 0.02%. Add colorants in the glass raw materials, can be made of colored glass; Add opacity, opal glass (see glass). Production of carved carved high-art artware such as goblet, perfume bottles, fruit pots and more use of potassium lead silicate glass, also known as lead crystal glass. This glass contains PbO, with a high refractive index and dispersion, grinding brilliantly extraordinarily bright, high specific weight, percussion crisp sound. PbO30% or more for the all-lead crystal glass, lead-containing PbO24 ~ 30% lead crystal glass, containing PbO18% below the low-lead crystal glass, in addition to BaO containing barium crystal glass. Cooking utensils such as coffee pots and other products using heat-resistant borosilicate glass, its low thermal expansion coefficient, high temperature resistance. Glass-ceramics have better resistance to heat and temperature gradients, high mechanical strength, and are suitable for the manufacture of utensils often washed in cooking utensils and hotel rooms.
Artificial and mechanical blow molding two ways. Artificial molding, the hand-held blowing tube from the crucible or tank kiln mouth at the pick material, iron mold or wood mold blow. Smooth round products with blowing method; surface convex pattern or irregular shape of the product with a static blow method. First pick no color material blown into small bubbles, and then use the vesicles to pick the color material or emulsion material blown into a shape known as nest blown. With the color fusible particles stained in the opaque sets of materials, the natural melt flow of color, can be blown into a natural beauty of the vessel; in the color material stained band emulsion material, can be blown into a drawing utensils. Mechanical molding is used to blow large quantities of products. Blown machine automatically after the iron mold into the blower shape, remove the cap after hatch that is into the vessel. You can also use pressure - blow molding, the first red material into small bubbles (prototype), and then continue to blow into the shape. It is more efficient and better quality than simply blowing machine.