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Decompressing the cold runner, liquid silicone rubber injection molding

Decompressing the cold runner, liquid silicone rubber injection molding

Decompressing the cold runner, liquid silicone rubber injection molding

(OP)
Hello,


Does anyone know why LSR molders typically decompress the cold runner *after* the valve gates are closed?

I can understand this practice with open nozzles, but don't know why it's also done with valved ones.


Thanks,

RE: Decompressing the cold runner, liquid silicone rubber injection molding

Probably because the liquid viscosity is so low that leakage can be a problem.

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