Method of manufacturing a pipe liner bag
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United States of America Patent
Stats
-
Oct 24, 2000
Grant Date -
N/A
app pub date -
Nov 20, 1997
filing date -
Nov 21, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a method of readily manufacturing a multi-layer pipe liner bag with a good workability. A guiding tube is inserted into an outer layer composed of a tubular resin absorbent material and a plastic film coated over the outer periphery of the tubular resin absorbent material. An inner layer composed of another tubular resin absorbent material is inserted into the guiding tube, and the guiding tube is extracted with the outer layer and the inner layer being fixed. The tubular resin absorbent materials of the outer layer and the inner layer are with thermosetting resin to complete the pipe liner bag. Since the outer layer and the inner layer are manufactured separately, the manufacturing of the respective layers can be performed with a good workability. Also advantageously, the plastic film covering the outer surface of the outer layer can be prevented from scratches and so on.
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Family
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Cited Art Landscape
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