PLUG FOR CONTAINER AND METHOD OF MANUFACTURING THE SAME

摘要

A container stopper includes a core 1 formed of an elastic material and having a liquid-contact surface F1 and an outer peripheral surface F2 continuous with the liquid-contact surface coated with a skin made of a synthetic resin. The skin 2 is a skin made of a polyester resin or a synthetic resin having a polyester resin as a main component thereof, and the polyester skin 2 is bonded to the liquid-contact surface F1 and the outer peripheral surface F2 of said core through a bonding layer 3 formed of a polyethylene resin or having a polyethylene resin as a main component thereof. The polyethylene bonding layer 3 has a thickness of 80 to 300 µm at a center portion of the liquid-contact surface F1, a thickness of 70 to 100 µ m at an outer peripheral portion of the outer peripheral surface adjacent the liquid-contact surface F1 and a thickness of 30 µm or more over the entire liquid-contact surface F1.