RESIN-COATING APPARATUS OF PIPE BODY

摘要

PROBLEM TO BE SOLVED: To simplify a structure for cooling a rubber roll in a resin coating apparatus of a pipe body. SOLUTION: A rubber roll 10 for bonding the semi-molten resin drawn out of a mouthpiece to a pipe body under pressure is formed by laminating a pressure bonding rubber 12 to the outer periphery of a metal cylindrical body 11 and disc-shaped shaft members 13 having a rotary shaft 14 provided to the center thereof and the air passing parts 18, which communicate with the interior of the cylindrical body, provided to the outer peripheral part of the rotary shaft 14 are attached to both end openings of the metal cylindrical body 11 and blade-shaped members (spokes 17) rotated along with the shaft members 13 to introduce air into the cylindrical body are provided to the shaft members 13.