Disposable absorbent mat structure for removal and retention of wet and dry soil
US4614679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1983 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A disposable absorbent structure for the removal and retention of moisture and/or particulate from a soiled object coming in contact therewith. The structure preferably comprises a macroscopically patterned, three-dimensionally expanded, shear resistant uppermost layer having an object contacting surface and a non-object contacting surface, said uppermost layer exhibiting a pattern of protuberances extending upwardly from a first plane and terminating in a second plane substantially parallel to and remote from the first plane. The uppermost layer further exhibits a multiplicity of discrete apertures in its second plane and is pervious to moisture in its first plane. A moisture absorbent substrate having its uppermost surface coextensive with the uppermost object contacting layer is secured substantially continuously to substantially all of the non-object contacting surface of the uppermost layer. The discrete apertures located in the second plane of the uppermost layer expose the subjacent portions of the moisture absorbent substrate directly to the soiled object when the disposable absorbent structure contacts the object. Under normal use conditions, the portions of the uppermost …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.