Tool suction blow molding for producing molded parts of synthetic material, shaped blow suction and extrusion production process and use

摘要

Tool blow molding with suction (1) with a cavity (3) formed by two halves (9) deherramienta for producing molded parts of synthetic material (10) formed by blow consucción and extrusion by the procedure blow suction in which case a preform (2) deformableplásticamente and extruded in the form of a flexible tube of molten plastic material is introduced into dela closed cavity (3) and are carried to their position in the cavity by sliding at least partly on unasuperficie molding (5), having at least a portion of the molding surface (5) of the cavity (3) unatexturación, characterized in that the texturing of the mold surface (5) has in most casosunas cavities produced by sandblasting the milled surface, having this one texturing Ra comprised between 0.8 and 6.3 valorde microns and an Rz value in the range of 6-40 .mu.m and ponien puntoun do to sliding friction decreased with respect to the preform (2).