The excess material protruding from the surface of a molded part at the mold junctions. The ability of heated plastic or uncured rubber to travel in the mold and runner systems during the molding process. A surface appearance where the material knitted or blended with itself during the molding operation. The openings in an injection or transfer mold that ensure the even flow of material into the cavity. A raised spot or small depresion on the surface of an injection or transfer molded part where the gates interface the cavity.
High values represent harder materials while low values indicate softer materials.
The hardness in most types of measurement ranges from 10 to 95. The temperature at which a standard plastic test bar deflects 0.010 in. A machining process that sharpens, enlarges, and smooths material via a fine-grit stone. Thermoplastic molding method that directs the melted plastic internally within the mold base directly to the cavity thus eliminating the runner. A system of characterizing an elastomer by its resistance to penetration of a known geometry indenter by a known force.