Plastic pipe welding method

Abstract

PURPOSE: To carry out rapidly beautifully and surely a welding operation by butting and jointing opposed ends of respective plastic pipes to take out a pressing body while fitting the pressing bodies in opposed ends of the two plastic pipes and heating and fusing projecting ends of the pressing bodies. CONSTITUTION: To weld two thermofusible plastic pipes 1, 2, first a plurality of pressing bodies 3, 4 except for the respective projections 3a, 4a are fitted in ends 1a, 2a of the respective plastic pipes 1, 2. Next, the respective projections 3a, 4a are fitted in respective sockets 5a, 5b coaxial with a heating body 5. Then, a after end faces 1b, 2b of respective plastic pipes 1, 2 make contact with respective surfaces 5c, 5d of the heating body 5 to be heated and welded, the respective plastic pipes 1, 2 are separated from each other. After the both end faces of the respective plastic pipes 1, 2 are butted and joined to each other while the respective pressing bodies 3, 4 are inserted, the respective pressing bodies 3, 4 are divided and taken out of the interior of the plastic pipes 1, 2. COPYRIGHT: (C)1992,JPO&Japio

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    US-9259563-B2February 16, 2016Saint-Gobain Performance Plastics CorporationFluid transfer assemblies and related methods