The production process of rubber by Baihui Company

In order to add various required additives to rubber, the raw rubber first needs to be plasticized to improve its plasticity; Then, by mixing, carbon black and various rubber additives are uniformly mixed with rubber to form a rubber compound; The rubber material is extruded into a certain shape of billet; Then combine it with textile materials (or metal materials) that have undergone rolling, hanging or coating to form semi-finished products; Finally, the semi-finished product with plasticity is vulcanized to produce a highly elastic final product. During the entire processing, the mechanisms of mixing and vulcanization are the most complex and have a significant impact on the quality of rubber products.
Molding is the process of bonding semi-finished rubber materials of various shapes and sizes with impregnated and coated textile materials according to different product requirements, to produce semi-finished products for vulcanization. This is also a key process in rubber processing. The molding methods and equipment for different types of rubber products are different. The traditional processing method is to first shape it into a semi-finished product of a certain shape, and then cure it into a finished product. Even the simplest molded products need to prepare rubber blanks, which are then molded and vulcanized on a flat vulcanizing machine (see molding).
On the basis of plastic processing, mold transfer vulcanization (see transfer molding) and injection molding vulcanization (see injection molding) have been developed. The characteristic of these two methods is to use an injection molding machine to directly inject the rubber material into the mold for vulcanization, which is used for producing shoes and large-scale model products. In recent years, casting molding (see casting) has been widely promoted and applied in the rubber industry. Its characteristic is to inject liquid rubber into the model, cure it, and make rubber products. This method has been applied to model products using liquid rubber, and trial production of cast tires has also begun.
This will be a revolutionary change in rubber technology. The semi-finished rubber products are also produced continuously and mechanically. Some rubber products (such as some rubber hoses, tapes, etc.) have formed a continuous production line.