NEEDLE BLOW NOZZLE, AIR COOKING METHOD AND APPARATUS, BLOW MOLDING METHOD AND APPARATUS, AND HOLLOW MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To enhance the cooling capacity of a parison while shortening a molding cycle by forming the of the leading end of a needle blow nozzle into an acute umbrella shape to increase the diameter thereof and certainly inserting the large diameter needle blow nozzle from the side part direction of the parison and supplying and discharging a large amt. of cooling air. SOLUTION: In a needle blow nozzle, an air cooling method and apparatus, a blow molding method and apparatus and hollow molded product, the needle part 5 of the needle blow 1 is formed into an umbrella shape and, therefore, the leading end of the needle part 5 becomes a spot-like needle center 9 and, since the large diameter needle blow nozzle 1 can be used and a large amt. of air is supplied through an air cooling apparatus and a parison is rapidly cooled to shorten a molding cycle.