For cosmetics, fragile glass containers have a safe heart. Glass materials are often used for packaging daily chemical products, especially in the field of perfume and high-end skin care products.
High borosilicate glass products, high borosilicate glass milk bottles, high borosilicate glass water cups
Everyone follows the pace of packaging home technology discussion to learn about glass containers together.
The History of Glass Containers
Container glass, including bottles, jars, drinking utensils, and bowls. Bottle glass is different from flat glass (used for windows, glass doors, transparent walls, windshields) and fiberglass (used for insulation, fiberglass composites, and optical communication). Compared to flat glass, container glass has lower magnesium oxide and sodium oxide content, but higher silicon dioxide, calcium oxide, and aluminum oxide. Its high content of insoluble oxides in water endows it with higher chemical durability, which is crucial for the storage of water and food. Most container glass is sodium calcium glass, manufactured by mold pressing, while other laboratory glassware is produced from borosilicate glass.
Glass container material
The manufacturing of glass packaging containers is achieved by calcining and melting silicate materials such as quartz sand and limestone at high temperatures, which may reach nearly a thousand degrees Celsius. Then, they are formed by molds and processed through annealing and cooling processes. The main raw materials for glass include sand, soda ash, calcite, and feldspar, which account for over 98% of the glass raw materials. And other small ingredients also include clarifiers, colorants, decolorizers, and so on. In addition, thanks to the powerful ability of glass, we also use broken glass as one of our main raw materials (usually ranging from 0% to 50%, sometimes even 100%) in order to recycle glass and reduce energy consumption. This is also why we say that glass is an environmentally friendly material. The quality of quartz sand varies from different producing areas, generally including plain white materials, refined white materials, etc. The classification of glass bottles is generally based on material color: generally classified as refined high white, high white, plain white, green materials, brown, etc.
Glass products have better protective properties than plastic products for most products, such as water permeability, oxidation resistance, migration, etc
The Forming Process of Glass Containers
The forming process of glass bottles and cans refers to a series of action combinations (including mechanical, electrical, etc.) that are repeated in a given programming sequence, with the goal of manufacturing a bottle and can with the expected specific shape. At present, there are two main processes in the production of glass bottle and can containers: the blowing method for narrow bottle mouths and the pressure blowing method for larger caliber bottles and cans.