Green Vertical Rubber Injection Moulding Machine Vulcanizing Temperature Controlable

Vertical 300 Ton FIFO Rubber Injection Machine Vulcanizing Temperature Controlable

Several molding processes for rubber products:

1. Compression Molding

• Commonly used molding methods to manufacture certain rubber products with complicated shapes such as cups and seals, and the rubber materials are placed in the mold by means of the formed female and male molds to be heated and formed.

2. Injection Molding

• For more complex rubber products, such as tire tread, hose, wire surface coating, it needs to be manufactured by injection molding.
• It is a method of putting a certain plasticity into a hopper of an extruder under the extrusion of a screw through a variety of mouth shapes, also called a template.
• Before the extrusion, the rubber must be preheated to make the rubber soft and easy to extrude to obtain a rubber product with smooth surface and accurate size.

3. Calendering

• It is suitable for the manufacture of simple sheet and plate products. It is a method of pressing a rubber compound into a film having a certain thickness and a width by a calender, which is called calender molding.
• Some rubber products such as tires, tapes, hoses, etc. must be coated with a thin layer of glue. The glue is also applied to the fibers, which is also called glue or rubber. The glue coating process is generally completed on the calender.
• The fiber material needs to be dried and dipped and dried before calendering, in order to reduce the water content of the fiber material, so as to avoid evaporation of water and foaming, and to increase the temperature of the fiber material to ensure the quality of the calendering process.
• Dipping is a necessary process before the glue is applied to improve the bonding properties of the fiber material and the rubber compound.