Liquid retaining absorbent structure
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United States of America Patent
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-
Jun 30, 1987
Grant Date -
N/A
app pub date -
Oct 21, 1985
filing date -
Oct 21, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Liquid retaining absorbent structures consisting of a plurality of cells, each cell having an aperture to allow a liquid to enter the cell. The cell contains an expandable absorbent material and a valve member. As liquid enters the cell, the absorbent expands. When the amount of liquid is equivalent to the free volume of the cell the expanding absorbent causes the valve member to seal the aperture to isolate the liquid.
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