Looking to learn more about better shut off technology. We mold over large stamping with inconsistent edges and are trying to think of a flexible material to insert into the mold that will accommodate the edge changes.
You will have to specify tighter tolerances ± .001 on your metal stampings in order to gain consistency in your molding process. Also, do you have spring loaded inserts to accomodate the tolerance variances in metal stamping? We have extensive experience in insert molding, overmolding, etc.
Under ISO 9001: 2000 & UL certification production environment , CN offers high exact injection moulds and plastic parts for AT&T , Dell computer, Apple computer, Aucom Pulse Engineering and etc.
Shut off is shut off...not to oversimplify but you either have it or you don't (which can be verified by a good spotting of the tool up to temp and under tonnage) and if variation in the stampings is what is holding you "off"....you have to solve that issue. Some flexible (TPE, TPV, PVC) materials do have marginally better "viscosity or flash point" characteristics if the design can tolerate but it usually involves going to a higher durometer material and I don’t want to mislead you that this can solve a parting line shut-off issue caused by variation in the stampings because it most likely would not.
Hope this helps…