7. The amount of shrinkage must be considered in the ma […]
7. The amount of shrinkage must be considered in the manufacture of plastic forming molds. 1 The molded product shrinks. If the shrinkage of the plastic is not clearly known, it must be sampled or tested by a similarly shaped mold. Note: Only shrinkage can be obtained by this method, and the deformed size cannot be obtained. 2 The shrinkage caused by the adverse effects of the intermediate medium, such as ceramics, silicone rubber, etc. 3 Shrinkage of the material used in the mold, such as shrinkage when casting aluminum.