Rubber production process

1、 Basic process flow

There are various types of rubber products, but the production process is basically the same. The basic process of rubber products generally uses solid rubber as the raw material, including six basic processes: plasticization, mixing, rolling, extrusion, molding, and curing. Of course, there are no basic processes such as raw material preparation, precision processing of products, inspection, and packaging. The processing process of rubber is mainly to solve the contradiction between plastic and elastic properties. Through various processes, elastic rubber is made into plastic rubber, and then various coordination agents are added to make semi-finished products. The plastic and rubber semi-finished products are then vulcanized to become high elastic physical products. D has good mechanical properties.

1.Prepare two sets of raw materials

The main raw material for rubber products is 1-rubber, which grows in tropical and subtropical regions. The rubber bark is manually cut and collected.

2. Various ingredients are auxiliary materials added to improve the performance of rubber products.

3 materials (cotton, linen, wool, and various synthetic fibers, synthetic fibers and metal materials, steel wires) are used as skeleton materials for rubber products to improve mechanical strength and limit product deformation. During the preparation process of raw materials, precise weighing must be carried out according to the formula. In order for rubber and complexing agent to mix evenly with each other, it is necessary to process the material. The rubber is dried and softened in a drying chamber at 60~70 ℃, then the gel is broken into pieces with bulk agent. Crush wax, stearic acid, and rosin. If the powder contains mechanical impurities or needs to be removed through coarse screening, liquids such as pine tar, Gumarong need to be heated, melted, evaporated, filtered for impurities, complexing agents, etc. to make it dry or easy to agglomerate. If the sulfide produced during mixing is not evenly dispersed, bubbles will appear. Impact on product quality

3、 Plasticating

The elasticity of rubber lacks the necessary processing plasticity, making it difficult to process. In order to improve its plasticity and plasticize the rubber, the mixing of composite agents is easy to disperse evenly in the rubber, which also helps to improve the permeability and flowability of fiber fabric adhesive during the rolling, forming, and forming processes. The plastic forming process of long chain molecules degrading rubber is called plasticization. Mechanical plasticization and thermoplastic have attempted two methods of rubber plasticization. Mechanical chewing refers to the process where long chain molecular rubber undergoes mechanical extrusion and friction through a plastic refining machine at low temperatures, transitioning from a high elastic state to a plastic state and degrading into a shorter one. Thermoplasticization is the process of obtaining compressed air through combustion of raw rubber. Under the action of heat and oxygen, long chain molecules undergo shorter degradation to obtain plasticity.

4、 Mixing

In order to adapt to different usage conditions, obtain various properties, improve the performance of rubber products, and reduce the cost of coordination agents, it is necessary to add different types of rubber. Mixing is the process of chewing and mixing raw rubber and composite rubber, and placing them in a rubber mixer to fully and uniformly disperse the coordination agent in the rubber through mechanical mixing. Mixing is an important process in the production of rubber products. If the mixing is uneven, the role of rubber and complexing agent cannot be fully utilized, which affects the performance of the product. The mixture of various rubbers obtained after sizing, commonly known as rubber products, is a semi-finished material. It is usually sold as a commodity and buyers can directly process the material, requiring the use of rubber vulcanization. According to different formulas? Mixing different brands and varieties offers a range of different performance options

5、 Formation

This process uses a rolling press or extruder to prefabricate various sizes and shapes in the production process of rubber products? It is called molding. The forming method is

1 Rolling

Suitable for the manufacturing of simple sheets and sheet products. This is a method of pressing rubber into a film of a certain shape and size through a rolling machine, called rolling. Some rubber products, such as tires, tape, and rubber hoses? Other textile fiber materials must be coated with a thin layer of adhesive, also known as paste or eraser on the fiber coating? The bonding process is generally also carried out in a rolling machine. The purpose of drying and impregnation drying fiber materials is to reduce their moisture content and avoid evaporation.