Cavity sealing article having improved sag resistance
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United States of America Patent
Stats
-
Feb 19, 2002
Grant Date -
N/A
app pub date -
Apr 1, 1999
filing date -
Apr 1, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Conventional foamable cavity sealing articles are susceptible to sagging when expanded in a vertical orientation with the foaming material facing downwards, because of gravitational drag on the molten material during expansion. The problem is particularly pronounced in foaming materials formulated to have high expansion ratios and low melt viscosities. A solution to the problem is presented in the form of a cavity sealing article having a planar holder and a foamable sealer, the foamable sealer circumscribing the edge of the support member. This construction creates a gripping effect which prevents sagging of the sealing member during expansion.
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Family
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Cited Art Landscape
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