RUBBER PLUG FOR SYRINGE AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To enhance the strength of adhesion between a high-molecular film for laminating a rubber plug for a syringe and a rubber composition on the inner side thereof. SOLUTION: This rubber plug for the syringe is formed by laminating the high-molecular film on the rubber plug composition prepared by mixing 50 to 99 pts.wt. rubber component and 1 to 50 pts.wt. at least one kind of thermoplastic elastomer among an epoxidated styrene-conjugated diene block copolymer, carboxylated styrene-conjugated diene block copolymer, hydroxylated styrene-conjugated diene block copolymer, epoxidated hydrogenated styrene- conjugated diene block copolymer, carboxylated hydrogenated styrene-conjugated diene block copolymer and hydroxylated hydrogenated styrene-conjugated diene block copolymer to make 100 pts.wt.