METHOD FOR HOLLOW ARTICLE PRODUCTION OF THERMOPLASTIC MATERIAL

摘要

FIELD: injection molding, for instance forcing the required volume of molding material through a nozzle into a closed mould, particularly to product article having inner cavities. ^ SUBSTANCE: method involves producing cavity forming rods of thermoplastic material having Vicat softening temperature 100-170°C less than injection molding temperature under 50H load; installing the rods in mold; performing injection molding article in pre-assembled mold; removing the article from mold; heating the article and rods installed in the article up to deformation temperature under 0.45 MPa pressure; removing the rods from the article. ^ EFFECT: simplified technology. ^ 1 tbl