Resin infusion process utilizing a reusable vacuum bag
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United States of America Patent
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Issued Date -
May 8, 2008
app pub date -
Oct 16, 2007
filing date -
Oct 17, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An improved reusable vacuum bag for use in the manufacture of fiber-reinforced composite components, wherein a polyurea-based prepolymer mixture is applied to a prepared surface, such as the surface of an open mold, and allowed to rapidly polymerize under ambient conditions to form the reusable vacuum bag. The polyurea-based prepolymer is made by combining an isocyanate component with a resin blend component, and preferably mixed and dispensed using a spray device. The prepolymer mixture forms a coating that quickly polymerizes at ambient conditions into a flexible vacuum bag having a shape conforming to the receiving surface. The vacuum bag, once formed, may be used repeatedly to fabricate a plurality of composite parts.
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