Ashimori Kogyo Kabushiki Kaisha

Tokyo Gas Kabushiki Kaisha

Shinji Onishi

Akio Morinaga

Masakatsu Hyodo

Hiroyuki Sakuragi

Tomiyo Nishimoto

A method for lining pipe lines for transporting city water, city gas, petroleum and other various kinds of fluids. In a method used as a conventional art, i.e. a method for lining pipe lines which comprises pushing forward a flexible tubular lining material (2) provided on the inner surface thereof with a binder to allow a turning portion (4) of the lining material (2) to advance within a pipe line (1) while turning the lining material (2) inside out under fluid pressure thereby bonding the evaginated lining material onto the inner surface of the pipe line (1), the present invention is characterized in that a portion of the pipe line in the forwardly moving direction of the turning portion (4) is fully filled with water (7) and that a binder of the reaction-curing type, capable of reacting with water to initiate curing, is used as the binder, whereby the binder on the inner surface of the lining material is brought into contact with the water and cured at the turning portion (4) to bond the outer surface of the evaginated lining material onto which the binder has been applied to the inner surface of the pipe line (1).

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Takarazuka, Japan

Shinji Onishi