| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily separate a bladder from an air supply plug made of different materials when garbage is collected by sorting. SOLUTION: A communicating hole 20 is provided in a flange 5F in a lower end part of the air supply plug 5, the lower end part is molded by casting while a connection column 22 passes through the communicating hole 20 in a wall-thick part 15 of a head part of the bladder 10 and is buried and fixed, and a spherical protruding seal 12S is provided on an outer surface of the head part 10B of the bladder.</p> |
