Absorbent and cushioning products and their manufacture
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United States of America Patent
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Sep 22, 1992
Issued Date -
N/A
app pub date -
Oct 11, 1988
filing date -
Jun 30, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a product including at least a first layer of fibers, the layer residing in a thickened, shortened microundulated state as a result of longitudinal micro-compressive treatment, the layer is characterized by being shortened at least 20% of its original length in the direction of treatment, there being at least 10 microundulations per inch in the layer in the direction of the treatment, the compressed-together relationship achieved by the treatment being substantially preserved in said product with adjacent microundulations in said layer residing with their sides abutting one another. The microundulated layer is shape-retentive and has stored mechanical energy capable, under activating conditions, to cause the product to expand. Products, and a method of producing such products, are also described. The products include superabsorbent assemblages, tampons, pads, cushions and liquid distributing and storage articles.
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