Patent ID: 6656318
Filing Date: 2003-12-02
Classification: B29C,B29K,B29L,F16L

Abstract:
A method of joining together two reinforced thermoplastic tubes, comprising:butt welding an end of a first thermoplastic tube having reinforcing structure therein to an end of a second thermoplastic tube having reinforcing structure therein to provide a welded portion of said first and second thermoplastic tubes having said reinforcing structure therein; fitting a thermoplastic jacket having reinforcing structure therein over said welded portion; and heating and radially pressing said thermoplastic jacket until said thermoplastic jacket and said welded portion interpenetrate with one another such that said reinforcing structure of said thermoplastic jacket comes into contact with said reinforcing structure of said welded portion and said reinforcing structure of end sections of said first and second thermoplastic tubes adjacent to said welded portion, wherein said reinforcing structure of said thermoplastic jacket includes continuous composite threads of combined continuous glass filaments and continuous organic thermoplastic filaments.