PRODUCTION OF FLEXIBLE PIPE FOR ENDOSCOPE

PURPOSE: To make it possible to produce a flexible pipe which bends smoothly and supplely and has stable quality by adhering a net-like pipe on the outside surface side of flexible blanks and a sheath tube consisting of a rubber covering the outside surface thereof by a silane based vulcanizing adhesive at the time of rubber vulcanization. CONSTITUTION: The sheath tube 3 consisting of the rubber material is clad on the outer periphery of the flexible pipe blanks 1, 2. Silicone rubber, etc., are used as the rubber material. The net-like pipe 2 and the sheath tube 3 are adhered at the time of vulcanization by the silane based vulcanizing adhesive 4 applied on the outside surfaces of the flexible pipe blanks 1, 2. Namely, the silane based vulcanizing adhesive 4 is clad on the outside surfaces of the flexible pipe blanks 1, 2 coated with the silane based vulcanizing adhesive 4, by which the flexible pipe blanks are produced and these flexible pipe blanks are put into a heating furnace and are heated for one hour at 110 to 180 deg.C which is the vulcanizing temp. of the rubber material of the sheath tube 3, by which the rubber vulcanization of the sheath tube 3 is effected. The sheath tube 3 and the net-like pipe 2 are adhered by such heating.