| 摘要 |
PURPOSE:To shorten a treatment time and to reduce the cost by bonding a fluoroplastic resin membrane tube to a roller by deformation recovery within an elastic limit under pressure without relying on heat-shrinkage. CONSTITUTION:A fluoroplastic membrane tube is widened within its elastic limit by external force and, after a roller is inserted in said tube, the widened tube is restored by releasing the external force to be closely bonded to the roller. The proper thickness of the membrane tube is about 20-300mum. The membrane tube may be widened by pulling the tube 2 on a molding pipe 1 in the longitudinal direction so as not to generate wrinkles to fix the same to said pipe 1 and sealing the tube 2 at both end parts thereof to suck the tube from the suction hole 3 provided to the molding pipe 1 to reduce the pressure between the molding pipe 1 and the tube 2. The degree of pressure reduction is pref. about 10<-1>-10<-5>Torr. When reduced pressure is released after the roller is inserted in the tube 2, the tube 2 is restored to the original shape to be bonded to the surface of the roller under pressure. |
