Which material is good for food-grade glass bottles?
Quartz sand, limestone, feldspar, soda ash, boric acid, lead compounds, barium compounds are all acceptable.
There are national standards for the quality of glass bottles as a basis. A large proportion of glass bottles are used to contain food and beverages. In addition to general indicators such as appearance quality, the requirements for such glass bottles are the thermal stability and chemical stability of the product. Because glass bottles must be sterilized at high temperature before filling, high thermal stability should be emphasized for this type of product. To preserve products such as pickles and fermented bean curd, glass bottles are required to have reliable chemical stability in order to maintain their quality. The quality of glass products in my country is uneven, and as a user, it is impossible for every bottle to undergo a comprehensive quality inspection. Therefore, in order to ensure the quality, it is recommended that you choose a reliable supplier, such as OI’s glass factories in Guangzhou, Shanghai, Wuhan, and Tianjin, China, which can fully meet your quality requirements. There is no need to sign another quality guarantee, as long as it is indicated in the supply contract.
Various materials used to prepare glass batches are collectively referred to as glass raw materials. It is roughly composed of 7-12 kinds, and there are 4-6 kinds of main materials, such as quartz sand, limestone, feldspar, soda ash, boric acid, lead compounds, barium compounds, etc. According to the role of the introduced oxides in the glass structure, it can be divided into The raw materials for glass forming oxides, the raw materials for intermediate oxides, and the raw materials for external network body oxides can be divided into raw materials for acidic oxides and alkali metal oxides according to the properties of the introduced oxides. Batch is the raw material for glass to obtain certain necessary properties and accelerate the melting process. Although the amount is small, the function is really important. These auxiliary materials are divided into clarifiers, fluxes, colorants, decolorants, opacifiers, and oxidizers. , Reducing agent, etc.
Different formulations of the same raw material, different origins of the same raw material and different content of related indicators will all affect product quality and production costs. When the raw material cost disparity is small, it is difficult for the produced glass bottles to be significantly different when comparing the samples. The difference can only be seen in mass production.
Post time: Apr-25-2021