Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2005-08-16
2005-08-16
Vo, Hai (Department: 1771)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S315500, C428S315900, C428S317100, C428S317900, C428S315700
Reexamination Certificate
active
06929853
ABSTRACT:
The present invention comprises a stretched, multilayer breathable film that provides a barrier to microorganisms, blood and bodily fluids that is manufactured by simultaneously extruding a five-layer film having a minimum structure of C:A:B:A:C or a three-layer film having a minimum structure of C:D:C in which B is a microporous core layer, C is an outer monolithic layer, A is a microporous adhesive layer for bonding the outer monolithic layers to the core layer, and D is a microporous adhesive layer, and then stretching the extruded film to form micropores in the microporous core layer or the microporous adhesive layer, the micropores allowing the passage of water vapor but substantially preventing the passage of liquid water.
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Herrick William D.
Kimberly--Clark Worldwide, Inc.
Klembus Nancy M.
Vo Hai
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