How to find a reasonable shrinkage rate for the PVC molds
How to decide a reasonable shrinkage rate is vital to a injection mold company, because it will effect the product tiny demension when the parts need assembly.
Except the own shringe rate of the raw materials, injection molding data will effect the shrinkage also, like the coolin time, injection pressure,MFI...
So, to find a reasonable shrinkage rate, is a a kind of experience and difficult thing.
If any one have better idea for mold shrinkage rate, pls kindly contact me.
Thanks and best regards.