Method for impregnating a tubular resin-absorbable liner with resin
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 25, 2000
Grant Date -
N/A
app pub date -
Mar 18, 1998
filing date -
Mar 18, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for impregnating a resin-absorbable tubular liner with a hardenable liquid resin: (a) a hose is connected to a vacuum pump; (b) the hose is inserted into the liner in a manner such that the open end of the hose comes close to, but sufficiently distant from, one end of the liner; (c) the other end of the tubular liner is closed over the hose in a manner such that the hose can freely slide through the closed end of the tubular liner; (d) a predetermined amount of the hardenable liquid resin is injected into the tubular liner through the open end of the tubular liner; (d') the open end of the tubular liner is substantially closed by placing it between a pair of rollers; and (e) the vacuum pump is operated to evacuate the hose while at the same time the hose and/or the resin-absorbable tubular liner are moved in a manner such that the length of the hose inside the liner is reduced.
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