Explanation
Also called post mold shrinkage, it refers to the phenomenon that polymer is cooled to room temperature after demoulding, and the size of the molded product is smaller than the size of the mold cavity. The degree of molding shrinkage is related to the characteristics of polymer, mold structure, molding process and other conditions. When designing the polymer mold, it is necessary to add an additional part of the size allowance to compensate for the molding shrinkage of the product. The degree of molding shrinkage is usually determined by molding shrinkage
Classification
Organic polymer materials -> Polymer processing -> Processing related properties