First of all, it is necessary to design and manufacture the mold. The glass raw material uses quartz sand as the main raw material, and other auxiliary materials are melted into a liquid state at high temperature, and then injected into the mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have rigid signs, which are also made from mold shapes. The molding of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion molding according to the production method. Glass bottles can be divided into the following categories according to their ingredients: one is sodium glass, the other is lead glass, and the third is borosilicate glass.
The main raw materials of glass bottles are natural ore, quartz stone, caustic soda, limestone, etc. Glass bottles are highly transparent and corrosion-resistant, and will not change material properties in contact with most chemicals. Its manufacturing process is simple, free and changeable in shape, high in hardness, heat-resistant, clean, easy to clean, and can be used repeatedly. As a packaging material, glass bottles are mainly used for food, oil, alcohol, beverages, condiments, cosmetics and liquid chemical products, etc., and are widely used. However, glass bottles also have their shortcomings, such as heavy weight, high transportation and storage costs, and impact resistance.
The use characteristics and types of glass bottles: glass bottles are the main packaging containers for food, medicine, and chemical industries. They have good chemical stability; easy to seal, good air tightness, transparent, and the condition of the contents can be observed from the outside; good storage performance; smooth surface, easy to disinfect and sterilize; beautiful in appearance and colorful decoration; there are certain mechanical It has the advantages of high strength and can withstand the pressure in the bottle and the external force during transportation; the raw materials are widely distributed and the price is low. The disadvantage is that it has large mass (large mass-to-capacity ratio), high brittleness and brittleness. However, with the new technology of thin-walled lightweight and physical and chemical toughening, these shortcomings have been significantly improved, so the production of glass bottles can increase year by year under the fierce competition with plastics, iron cans and iron cans.
There are many kinds of glass bottles, from small bottles with a capacity of 1ML to large bottles of more than ten liters, from round, square, to special-shaped and handle bottles, from colorless and transparent amber, green, blue, black shade bottles and opaque bottles of opalescent glass bottles, and the list goes on. As far as the manufacturing process is concerned, glass bottles are generally divided into two categories: molded bottles (using model bottles) and tube bottles (using glass tube bottles). Molded bottles are divided into large-mouth bottles (bottle diameter above 30MM) and small-mouth bottles. The former is used to hold powder, block and paste items, and the latter is used to hold liquid. According to the form of the bottle mouth, it is divided into cork bottle mouth, screw bottle mouth, crown cap bottle mouth, rolling bottle mouth and frosted bottle mouth, etc. According to the usage, it is divided into "single-use bottles" which are discarded after one use and "recycling bottles" which are used for multiple turnovers. According to the classification of the contents, it can be divided into wine bottles, beverage bottles, oil bottles, canned bottles, acid bottles, medicine bottles, reagent bottles, infusion bottles, cosmetic bottles and so on.
