The composition of glass is one of the main factors determining the nature of glass, therefore, the chemical composition of glass bottle and can should first meet the physical and chemical performance requirements of glass bottle and can, at the same time to combine melting, molding and processing technology and other comprehensive considerations, in addition, but also consider the cost savings and reduce pollution.
1. Ingredients of bottles and jars
2. Composition type of bottle glass
According to the different content of glass oxide, can be divided into sodium calcium glass components, high calcium glass components, high aluminum glass components, but this classification is not rigorous, just for the convenience of research and elaboration.
According to the different USES of bottle and can glass, can also be divided into glass beer bottles glass components, wine bottles glass components, can glass components, medicine bottles glass components and reagents and chemical raw materials bottle glass components. In order to reduce the cost, glass components should be designed according to the performance requirements of different applications.
Domestic more general is to divide glass component type according to tonal. Traditionally, it is divided into high white material (Fe2O3<0.06%), bright material (general white material), half white material (qingqing material Fe2O3≤0.5%), color material, milky white material. The common high white material is generally used for high quality wine bottles and cosmetic bottles. The semi-white material is used for cans and bottles, which contain a certain amount of Fez O 3, mainly used to absorb ultraviolet rays. It contains Fe2O: <0.5%, and the ultraviolet ray limit is below 320nm. The beer bottle is green or amber, and the absorption limit is about 450nm.