Yearly Archives: 2017



By |2017-12-12T01:57:09+00:00September 13th, 2017|injection molding|

SEMI-POSITIVE TYPE MOLD Because of the difficulty of fitting positive molds, and because scoring is detrimental to the finish of the casting, a semi-positive mold is a good compromise design. Fig. 28 is a diagram [...]

injection molding design

By |2017-05-25T14:38:51+00:00May 25th, 2017|plastic mold|

The principal method by which polymer or plastics material is converted into useful products is by moulding, usually under heat and pressure, in a hollow mould or die. The material takes the shape of the [...]