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US 2023/0212366 A1Published application
Cellulose fiber foam with paper-like skin and compression molding process for its preparation
OwnerGregory M. Glenninventor
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Abstract
Provided herein is a molded cellulose foam having a smooth, dense surface fiber layer and a low density, open-cell structure interior, a process for compression-molding fiber foam into such molded cellulose foam, articles prepared with such foam, and articles prepared by such process.
Claims23
A molded cellulose foam having a smooth, dense surface fiber layer and a low density, open-cell structure interior.
A wet cellulose fiber foam press comprised of a porous upper platen, a porous lower platen, and a mold contained between the upper and lower platens.
A wet cellulose fiber foam press comprising:
- a lower platen assembly comprising a first rigid grid through which liquid can pass set on a flat surface and at least one first perforated sheet through which only liquid can pass set on top of the first rigid grid,
- a solid frame forming a molding chamber set on top of the first perforated sheet, and an upper platen assembly comprising a second perforated sheet through which liquid can pass with and at least one second rigid grid through which only liquid can pass set on top of the second perforated sheet,
- wherein the molding chamber comprises a mold inserted into the molding chamber or as part of the solid frame, and
- wherein the lower and/or the upper platen assembly may further comprise a first or second perforated sheet through which only liquid can pass.
1 more element
Dependencies are inferred from the claim text.