The production process of glass bottles mainly includes: raw material pretreatment. Crushing massive raw materials (quartz sand, soda ash, limestone, feldspar, etc.), drying the wet raw materials, and processing the iron raw materials to ensure the quality of the glass. Prepare supporting materials. melt. The glass batch material is heated in a kiln or pool furnace at a high temperature (1550~1600 degrees) to form a uniform, foam-free, liquid glass that meets the molding requirements. forming. Put the liquid glass into the mold to make glass products of the required shape, such as flat plates, various utensils, etc. Heat treatment. Through annealing, quenching and other processes, the stress, phase separation or crystallization inside the glass is removed or generated, and the structural state of the glass is changed.
The first step is to design and manufacture molds. The glass raw material uses quartz sand as the main raw material, and other auxiliary materials are melted into liquid at high temperature, and then injected into the mold, cooled, cut, flamed, and made into a glass bottle. Glass bottles generally have a rigid logo, and the logo is also made into a mold shape. According to the manufacturing method, the molding of glass bottles can be divided into three types: manual blower, mechanical blower and extrusion molding. Glass bottles can be divided into the following types according to their ingredients. One is soda glass, the other is lead glass, and the third is borosilicate glass.
The main raw materials of glass bottles are natural ore, quartz stone, alkali, limestone and so on. Glass bottles are highly transparent and corrosive, so even if they are in contact with most chemicals, the material properties will not change. The manufacturing process is simple, the shape is free, the hardness is high, heat-resistant, clean, easy to clean, and can be reused. Glass bottles are packaging materials, mainly used for food, oil, wine, beverages, condiments, cosmetics, liquid chemical products, etc., with a wide range of uses. However, glass bottles also have disadvantages such as heavy weight, high transportation and storage costs, and inability to withstand shocks.
Use characteristics and types of glass bottles: Glass bottles are the main packaging containers in the food, medicine and chemical industries. Good chemical stability. Easy to seal, good air tightness, transparent, and growth can be observed from the outside. Good storage performance. The surface is clean, easy to disinfect and sterilize. The shape is beautiful and the decoration is colorful; it has a certain mechanical 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 disadvantages are high quality (high quality and large capacity), brittle and fragile. However, these shortcomings have been significantly improved with the adoption of thin-walled, lightweight and new physical and chemical strengthening technologies. In the fierce competition with plastic, iron green and cans, the output of glass bottles may increase year by year.
Glass bottles range from small bottles with a size of 1 ml to large bottles of more than 10 liters, round, square, special-shaped, handle bottles, colorless transparent amber, green, blue, black shading bottles, opaque opal glass bottles, etc. Variety. As far as the manufacturing process is concerned, glass bottles are generally divided into two categories: mold bottles (using molds to make bottles) and control bottles (using glass control bottles). Mold diseases are divided into two types: big mouth disease (bottle diameter above 30 mm) and small mouth disease. The former is used for powder, block and paste, the latter is used for liquid. According to the bottle mouth form, it is divided into cork bottle mouth, screw bottle mouth, crown cap bottle mouth, roller bottle mouth frosted bottle mouth, etc. According to the amount of use, it is divided into "one-time bottles" that are not used once and "recycled bottles" that are rotated multiple times. According to the classification of clothing items, it can be divided into wine bottles, beverage bottles, oil bottles, tank bottles, loose bottles, medicine bottles, reagent bottles, infusion bottles, cosmetic bottles, etc.