Molded resin pipe joint and process for production thereof

Details Molded resin pipe joint and process for production thereof Molded resin pipe joint and process for production thereof

F - Mech Eng,Light,Heat,Weapons

16

L

189/64

F16L 19/00 (2006.01) F16L 23/00 (2006.01) F16L 47/06 (2006.01) F16L 47/26 (2006.01)

Patent

CA 1096786

Abstract of the Disclosure A pipe joint of a reinforced resin having a structure in which the wall of at least a socket portion consists of an inside surface layer composed of a cured product of a reinforced resin molding material, an outside surface layer composed of a cured product of a reinforced resin molding material, and an interlayer between those layers composed of a cured product of a resin mortar. The above pipe joint can be molded by (1) forming an uncured inside surface layer composed of a resin- impregnated reinforced molding material on the peripheral surface of a core mold; (2) seating a resin mortar on the inner surface of a split mold and molding the surface of the coated resin mortar by a former having a contour substantially corresponding with that of the inside surface layer; (3) forming an incompletely cured interlayer composed of resin mortar by capping the split mold containing the molded resin mortar on the inside surface layer and removing the split mold after the curing of the resin mortar has proceeded to a certain amount; (4) forming an uncured outside surface layer composed of a resin-impregnated reinforced molding material on the peripheral surface of the incompletely cured interlayer; and (5) completing the curing of the entire layers. Alternatively, a cured cylindrical structure prepared separately may be used as the inside surface layer instead forming it in situ in the above process.

310518

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