B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 63/34 (2006.01) B32B 3/06 (2006.01) F16L 55/165 (2006.01) B32B 1/10 (1990.01)
Patent
CA 2072173
A lining material for pipe lines, especially those buried in the ground such as sewage pipe lines and a process for providing such pipe lines therewith are disclosed, which material comprises a flexible tubular film, a resin-impregnated sheet covering the outer surface of the flexible tubular film, and a tubular covering material having a strong resistance to tensile force. The sheet may be constructed by several units of sheet fractions arid is overlapped in both lateral end portions so as to be slidable each other in opposite directions to form a tubular sheet. The lining material is applicable for repair/and reinforcement to the inner surface of a pipe line having damages portions. According to the process of this invention thermocuring of the lining material applied onto the inner surface of a pipe line can be carried out by moving a nozzle for jetting pressurized steam from one end to the other end of the pipe line without applying high pressure to the pipe line. Thus, the present invention is particularly suited for applying a lining material to a superannuated sewage pipe line or general sewage pipe lines having damaged portions.
Imoto Takayoshi
Okahashi Toshio
Ashimori Engineering Co. Ltd.
Ashimori Industry Co. Ltd.
Kirby Eades Gale Baker
LandOfFree
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