| 摘要 |
PCT No. PCT/GB92/02286 Sec. 371 Date Oct. 17, 1994 Sec. 102(e) Date Oct. 17, 1994 PCT Filed Dec. 10, 1992 PCT Pub. No. WO93/13350 PCT Pub. Date Jul. 8, 1993A method of lining passageways, or pipelines, employs a pre-liner sleeve formed of a thin plastic material, which is applied to the inside surface of the passageway to be lined. During application of the pre-liner sleeve, it is held in a concertina-like folded condition in a magazine which is moved along the passageway by operation of air pressure which is applied from within the pre-liner sleeve, and which simultaneously inflates the pre-liner sleeve so that it communicates with the inside surface of the passageway. A spray head follows the magazine from within the inflated pre-liner sleeve and applies a hardenable composition, such as mortar, to the inside of the inflated pre-liner sleeve. The spray head is followed, in some embodiments, by a tube which is everted to communicate with the applied hardenable composition under air pressure. The tube holds the applied layer in position while it cures.
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