The first step is to design and determine and manufacture the mould. The glass raw material is made of quartz sand as the main raw material, together with other auxiliary materials which are dissolved into a liquid state at high temperature and then injected into the mould, cooled, cut and tempered, it forms the glass bottle. Glass bottles are generally marked with a rigid logo, and the logo is also made from the shape of the mould. Glass bottles are formed according to the production method can be divided into three kinds of manual blowing, mechanical blowing and extrusion molding. Glass bottles according to the composition can be divided into the following categories: one is soda glass two is lead glass three is borosilicate glass.
The main raw materials of glass bottles are natural ore, quartz stone, caustic soda, limestone and so on. The glass bottle has a high degree of transparency and corrosion resistance, and the material properties will not change in contact with most chemicals. The manufacturing process is simple, the shape is free and changeable, the hardness is large, heat-resistant, clean, easy to clean, and can be used repeatedly. As packaging materials, glass bottles are mainly used for food, oil, wine, beverages, condiments, cosmetics and liquid chemical products, etc., with a wide range of uses. However, glass bottles also have their disadvantages, such as large weight, high transportation and storage costs, and inability to withstand impact.
The use of glass bottles features and types: glass bottles are the main packaging containers for the food, pharmaceutical and chemical industries. They have good chemical stability; easy to seal, good gas tightness, transparent, can be observed from the outside of the contents; good storage performance; smooth surface, easy to sterilize and sterilize; beautiful shape, colorful decoration; have a certain mechanical strength, can withstand the pressure inside the bottle and the external force during transportation; raw materials are widely distributed, low price and other advantages. The disadvantage is the large mass (mass to volume ratio), brittleness and fragility. However, the use of thin-walled lightweight and physical and chemical toughening of new technologies, these shortcomings have been significantly improved, and thus the glass bottle can be in fierce competition with plastic, iron hear, iron cans, production increased year by year.
There is a wide variety of glass bottles, from small bottles with a capacity of 1 ML to large bottles of more than ten litres, from round, square, to shaped and shaped bottles with handles, from colourless and transparent amber, green, blue, black shaded bottles and opaque milky glass bottles, to name but a few. In terms of manufacturing process, glass bottles are generally divided into two categories: moulded bottles (using a model bottle) and control bottles (using a glass control bottle). Moulded bottles are divided into two categories: large-mouth bottles (with a mouth diameter of 30mm or more) and small-mouth bottles. The former is used to hold powders, lumps and pastes, while the latter is used to hold liquids. According to the form of the bottle mouth is divided into cork mouth, threaded mouth, crown cap mouth, rolled mouth frosted mouth, etc. The bottles are divided into "disposable bottles", which are used once, and "recycled bottles", which are used repeatedly. According to the classification of the contents, it can be divided into wine bottles, beverage bottles, oil bottles, can bottles, acid bottles, medicine bottles, reagent bottles, infusion bottles, cosmetic bottles and so on.
Post time: Apr-13-2021