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US 4,232,674 AGranted
Liquid absorption devices
AssigneeLever Brothers Company
InventorNigel J. T. Melican
Life of this patent
Estimating the term…
Abstract
A liquid absorbent device such as a diaper, sanitary towel or tampon includes one or more layers of a material with capillarity and carries an absorbent deposit in a predetermined pattern, for example parallel stripes, to leave uncovered areas for capillary flow of liquid from saturated to unsaturated areas of the layer. The absorbent deposit may be a highly absorbent starch based gel.
Claims17
A liquid absorbent device comprising:
- an absorbent layer, said absorbent layer consisting of:
- (a) at least one carrier sheet of substantially non-absorbent material, wherein said material causes capillary flow of a liquid along said sheet when said sheet is contacted with said liquid;
- carrying
- (b) a deposit of absorbent materials applied to said carrier sheet in a predetermined pattern of stripes;
- wherein said stripes leave uncovered areas of said carrier sheet thereby providing channels for said capillary flow of said liquid from saturated to unsaturated areas of said absorbent material.
2 more elements
A sanitary towel comprising:
- (a) a first absorbant member comprising a plurality of layers formed by folding a single layer wherein said single layer consists of:
- (i) two sheets of a substantially non-absorbent material wherein said material causes capillary flow of a liquid along said sheets when said sheets are contacted with liquid;
- and
- (ii) a deposit of non-fibrous particles of a cross-linked carboxyolated starch derivative in a predetermined pattern of stripes sandwiched between said sheets,
- wherein said stripes provide channels for said capillary flow to said liquid from saturated to unsaturated areas of said absorbent material;
- (b) a second absorbent member comprising a continuous deposit layer of absorbent material wherein said second absorbent member is adjacent to said first absorbent member;
- and
- (c) a non-absorbent member comprising a layer impervious to liquid, said non-absorbent member being adjacent to said second absorbent member.
5 more elements
Dependencies are inferred from the claim text.