Patent ID: 9579847
Date: 2017-02-28
CPC Classifications: B29C,B29D,B29K,B29L

Claim:
1. A system for thermoplastic induction welding of polymer pipes, comprising: a flexible ferromagnetic strip configured to fit within a coupling of a polymer pipe, the flexible ferromagnetic strip comprising at least one ferromagnetic material combined with a polymer material having at least one surfactant selected to allow a higher loading of the ferromagnetic material in the polymer material while maintaining flexibility; an electromagnetic induction coil configured to surround said coupling; and a power supply electrically connectable to said electromagnetic induction coil and configured to cause said coil to generate an electromagnetic field upon energizing thereof by said power supply, whereby a flow of current is induced in said ferromagnetic strip to heat said strip, resulting in thermoplastic welding of separate polymer pipe segments located within said coupling.