HERMETIC STRUCTURE OF PLASTIC CONTAINER FOR MEDICAL LIQUID

摘要

PURPOSE:To improve the welding strength of the flange of the mouth part and plug body of the container and prevent a molten resin from bleeding out of the edge of the flange. CONSTITUTION:This hermetic structure is constituted to seal the mouth part 3 of the container by thermally welding the plug body to the flange 4 of the mouth part 3 of the container with a plug body. A rising part 9 inclined inward is formed on the surface for thermally welding the plug body of the flange 4 of the mouth part 3 of the container. The surface having the rising part 9 of the flange 4 of the mouth part 3 of the container is heated to melt and the plug body 5 is press welded to the surface, by which the molten resin of the rising part 9 is press and fusion welded to the state of folding the resin inward.