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your right the tolerances trying to be held are very tight for the type of part that I am making, the machine, process have been questioned as I have never experianced anything like this before, I,ve been able to change materials like for like on previous injection moulding jobs and have no...

Shrinkage as in part size the part size being 1.3250 +/-0.003. With the regular material i get a mean of 1.3239 but with the other materials i get a mean of 1.3204 and 1.3212 which the parts out of spec, but going back to the regular material the size returns to spec. All three materials are PP...

A number associated with the flexibilty or stiffness of a material.The lower the number the more flexible, the higher the less flexible, my question is Dose this number affect the shrinkage of plastic materials, I.E the higher the number the more shrinkage you get?? Have just sampled two new...