Vacuum bag for forming fiber reinforced composite articles and method for using same
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United States of America Patent
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Dec 30, 1997
Issued Date -
N/A
app pub date -
May 31, 1996
filing date -
Feb 18, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An vacuum bag for forming of a fiber reinforced composite article, made of a curable elastomer, having molded in resin distribution means. Optional vacuum conduits are molded into the periphery of the bag, causing the bag to be adapted to any number of mold shapes. The bag contains a resin distribution conduit sealed into the vacuum bag. A multiplicity of cross channels are formed on the inner surface of the bag, covering most of the area under which the fiber lay up is placed within the mold. These cross channels can be formed from a pattern of multiple, variegated small dots or pentagons, which, under vacuum, leave a multiplicity of small crisscross channels running along the inner surface of the vacuum bag. This pattern of distribution channels covers most of the fiber lay up, except for a perimeter area which insures resin flow into rather than across the fiber lay up.
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