Medical molded product, medical molded product extrusion method, and medical molded product extrusion molding apparatus

摘要

The present invention provides a technique capable of manufacturing a medical molded article having low coloring property at low cost. SOLUTION: To 100 parts by mass of polyvinyl chloride resin, 30 to 160 parts by mass of ester plasticizer, 5 to 25 parts by mass of epoxy plasticizer, and 0.01 to 0.1 parts by mass of zinc soap and calcium soap (total) A molded product for medical use having a whiteness (WI) of 25 or more and a yellowness (YI) of 3.5 or less. In extruding this medical molded article, the composition 11 formed in a solid form on the screw 21 of the extruder 20 in which the depth d of the groove 22 is formed to the same depth is used as the composition in the extruder. The supply amount is adjusted so as not to cause shearing heat generation. The solid composition supplied to the screw is melted by applying heat from the heaters 41, 42, and 43, and the molten composition extruded from the extruder is shaped by the die 50 into the shape of the medical molded article 12. To form. [Selection] Figure 1