02.what is glass jar？
Glass jar is a food and beverage and many products, packaging containers, the use of a wide range of glass is also a very historical packaging materials. In the case of many kinds of packaging materials into the market, the glass container in the beverage packaging still occupies an important position, which it has other packaging materials can not replace the packaging characteristics can not be separated
Raw materials and chemical composition Bottle glass Fittings are generally composed of 7 to 12 raw materials. Mainly quartz sand, soda ash, limestone, dolomite, feldspar, borax, lead and barium compounds. In addition, there are clarifying agents, colorants, bleaching agents, opacifiers and other auxiliary materials (see glass). Coarse particles of quartz is difficult to melt completely; particles too fine in the melting process and prone to scum and dust, affecting the melting, easy to plug the furnace regenerator. Suitable particle size is 0.25 ~ 0.5mm. For the use of waste glass, generally also added broken glass, the amount is usually 20 to 60%, up to 90%.