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Glass bottle production process What is a jar
Oct 26, 2018

Glass is not only transparent, but also high in strength and hardness. It is an indispensable material in daily production and life. There are many types of glass, in addition to the more common float glass and tempered glass, there are also special properties such as hot-melt glass, laminated glass and frosted glass.

First, the glass bottle production process

First of all, it is necessary to design and manufacture the mold. The glass raw material is made of quartz sand as the main raw material, and other auxiliary materials are dissolved into a liquid state at a high temperature, and then injected into a mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have a rigid logo, and the logo is also made of a mold shape. The forming of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion. Glass bottles can be divided into the following categories according to their composition: one is soda glass, the other is lead glass, and the other is boron bismuth glass.

        The main raw materials for glass bottles are natural ore, quartz, caustic soda, limestone and the like. Glass bottles are highly transparent and resistant to corrosion and do not change in material properties when 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 has the characteristics of being reusable. Glass bottles are widely used as packaging materials for food, oil, alcohol, beverages, condiments, cosmetics, and liquid chemical products. However, glass bottles also have their shortcomings, such as heavy weight, high transportation and storage costs, and low impact resistance.

Second, what is a jar


A jar is a glass container used to hold solid reagents. Jars are generally used to store reagents, and the inside of the bottle is frosted for use with the stopper. Available in both clear and brown, brown bottles are used to hold reagents that are protected from light (such as most nitrates such as silver nitrate).

         1. Cannot be used for heating.

         2. When taking the reagent, the stopper should be placed on the table. After use, the stopper should be tightly closed and sealed if necessary. Due to the inner side of the bottle mouth, it is matched with the glass sanding plug, and it corresponds to the bottle stopper. Therefore, the jar of the glass stopper cannot hold the strong alkaline reagent. If the alkaline reagent is contained, the rubber stopper is used instead because the hydroxide ion of the strong base reacts with the silica in the glass, and the product sticks the mouth to the plug.

         3. When the label is placed outward.

Related concepts

Reagent bottle

        Wide mouth, fine mouth; grinding mouth, no grinding mouth and so on. The jar is used to hold solid reagents, the fine bottle is filled with liquid reagents; the brown bottle is used for protection from light, and the stopper bottle can prevent moisture absorption and concentration change of the reagent.


        Glass is an amorphous inorganic non-metallic material, generally made up of a variety of inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) as the main raw material, and a small amount of auxiliary materials are added. of. Its main components are silica and other oxides. The chemical composition of ordinary glass is Na2SiO3, CaSiO3, SiO2 or Na2O·CaO·6SiO2, etc. The main component is a silicate double salt, which is an amorphous solid with a random structure. Widely used in buildings, used to separate light from the wind, is a mixture. There are also colored glass in which certain oxides or salts of metals are mixed to form a color, and tempered glass obtained by physical or chemical methods. Sometimes some transparent plastics (such as polymethyl methacrylate) are also called plexiglass.


        A solution is a homogeneous, stable mixture of at least two substances, and the dispersed substance (solute) is dispersed in another substance (solvent) as a molecule or a smaller particle. The substance has three states of solid, liquid and gas at normal temperature. Therefore, the solution also has three states, the atmosphere itself is a gas solution, and the solid solution mixture is often called a solid solution, such as an alloy. Typical solutions are only specific to liquid solutions. The liquid solution includes two types, that is, an electrolyte solution capable of conducting electricity and a non-electrolyte solution not capable of conducting electricity. The so-called colloidal solution, more specifically, should be called a sol. Among them, the solute corresponds to a dispersoid, and the solvent corresponds to a dispersant. Common solutions in life are sucrose solution, iodine, clarified lime water, dilute hydrochloric acid, brine, air, and the like.

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