The injection process

The rubber injection molding process is a production method that the rubber material is directly injected into the mould vulcanization from the barrel. Including feeding, plasticizing, injection, pressure retention, vulcanization, mold and other processes. The biggest characteristic of injection vulcanization is the inner layer and outer layer of rubber material temperature is relatively uniform, vulcanization speed is fast, can process most molded products.

Rubber injection molding equipment is rubber injection molding vulcanizing machine.

Die casting technology

Die casting method is also known as transfer mold method or mold moving method. In this method, the rubber material is installed in the plug of the die casting machine, and the rubber material is cast into the mold cavity under pressure for vulcanization. Similar to injection molding. Such as skeleton oil seal with this method to produce less overflow edge, good product quality.

Vulcanization process

Earlier, the main use of natural rubber is to do erasers; Later, it was used to make small rubber pipes. It wasn't until 1823 that British chemist James Mackintosh invented a tarpaulin made of rubber dissolved in coal tar and spread over cloth, which could be used to make raincoats and rain boots. But the raincoat and wellies melt in summer and become hard and brittle in winter. In order to overcome this shortcoming, many people were thinking of ways. Charles Chaplin, American inventor Goodyear is also experimenting with rubber modification, heating natural rubber with sulfur in hopes of producing a substance that remains dry and elastic at all temperatures all year round. It was not until February 1839 that he succeeded. One day he poured a mixture of rubber, sulphur, and turpentine into a pot (sulphur is only used for dyeing), and accidentally spilled the mixture onto a hot stove. To his surprise, the mixture did not melt when it fell into the fire, but remained charred as it was, while the partially charred mixture that remained in the furnace was elastic. He peeled the splatter off the stove and found that he had made the elastic rubber he wanted. After constant improvement, he finally invented the vulcanization of rubber in 1844.

Vulcanization is the last process in the production of rubber products. Vulcanization is the cross-linking process of rubber macromolecules from linear structure to network structure under certain conditions. There are three curing methods: cold curing, room temperature curing and hot curing. Most rubber products are vulcanized by heat. Hot vulcanization equipment has vulcanization tank, plate vulcanization machine.