some times when we try to inject plastic part, problems always occur, beginning with shot mold, flashing, and some times jetting.data below i take from Exxon Mobil Chemical, will explain various Injection Molding Problems and how to solve that properly.it's begin with sink markvoidshrinkageweld lineflashburningwarpbrittle partsticking in moldgate bush and various others below if you prefer read it online Injection Molding Problems and...
Wednesday, September 24, 2008
Friday, September 19, 2008
Calculation and Designing Support Pin or Leader Pin
as we know in previous posting about main construction of mold, there was pin in leader component, this pin will support main construction and cavity plate (3) from deflection and guide the cavity part and core part when mold closing. here the picture of support pin or leader pin in 3 plate mold type.Support...
Sunday, September 7, 2008
Considering Factor that affecting gate size
when we design a gate for mold injection, we need a proper size of gate, to large size of gate will make unbalanced flow and defect in product. to small size of gate make cycle time high, unfil l of product and sink mark is appear easily in product.although there was various factor that affecting gate size, here i list some common factor that affecting gate size.Mass of Partof course large mass of part need more large gate size, i still doesn't have...
