Rubber injection moulding
Injection moulding of rubber and silicone
The best way to manufacture a molded rubber or silicone component is through injection molding. The tool remains closed during the process, resulting in less flash.
Because rubber conducts heat poorly, the time required for injection moulding can be reduced. Since the rubber or silicone is pushed or pressed through a nozzle and also through a runner system, a pressure drop occurs in the part. The pressure is converted into heat, which means the rubber compound is preheated. This allows the vulcanisation time to be reduced compared with compression moulding, resulting in a shorter cycle time.
The machine is fed with a rubber strip and automatically draws in new material when the screw starts. This also means there is no need to produce preformed rubber blanks before the press operation.
The vulcanisation temperature is between 150°C and 200°C. The cycle time varies depending on the amount of rubber to be vulcanised and the thickness of the part to be moulded.
Automation is fully possible.
Installation of our new injection moulding machine. See below!
