ELECTRO-FUSION CONNECTING SHEET FOR CONNECTING PLASTIC PIPES

摘要

An electro-fusion connecting sheet for connecting synthetic resin pipes is provided to prevent overheating of the heating element and wall subsidence and fluid leakage due to overheating by inserting long heating members to the outer side of the thermoplastic synthetic resin sheet. An electro-fusion connecting sheet for connecting synthetic resin pipes comprises a thermoplastic synthetic resin sheet(110) of rectangular shape, a heating element(130), and a contact terminal(150). The heating element is inserted in the edge of the thermoplastic synthetic resin sheet in a U shape. The heating element is composed of a plurality of outer long heating members(131), a plurality of inner long heating members(132), and a plurality of short heating members(133). The inner long heating members are inserted in the thermoplastic synthetic resin sheet, adjacent to of the rectangular shape to the outer long heating members. The outer long heating members are inserted to the outer side of the thermoplastic synthetic resin sheet at the interval of 1~5mm. The ratio between the number of the outer long heating members and the number of the inner long heating members is 1:0.2~0.8.