INJECTION TOOL OF FOAMABLE RAW MATERIAL AND PRODUCTION OF SKIN INTEGRATED TYPE FOAMED RESIN OBJECT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To reduce the percent defective of a skin integrated type foamed resin object to improve productivity. SOLUTION: An injection tool made of a resin for injecting a foamable raw material from the injection port 14 of a bag-shaped skin T is equipped with the cylindrical part 1 fitted in the injection port 14 and flanges 2, 3 respectively provided to the outside and inside of the cylindrical part 1 and the inside flange 3 is connected to the cylindrical part 1 through a plurality of the hinge parts 4 radially rising from the cylindrical part 1 and these hinge parts 4 obliquely rise so that the flange sides 4b thereof go away from the outside flange 2 as compared with the cylindrical part sides 4a thereof. The cylindrical part 1 of the injection tool is fitted in the injection port 14 of the skin T and the hinge parts 4 are elastically deformed by the flexibility thereof so that the flange sides 4b approach and the skin T of the peripheral edge of the injection port is grasped by both flanges 2, 3 and a foamable raw material is injected from the cylindrical part 1 of the injection tool and foamed after the injection tool is closed.