Sheets made from moldable hydraulically settable materials

Details Sheets made from moldable hydraulically settable materials Sheets made from moldable hydraulically settable materials

1993-08-03

1997-05-06

McCamish, Marion E.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

106675, 106729, 106730, 106DIG2, 428152, 428182, 428220, 4283124, 4283139, 428703, 428906, B32B 502, B32B 508, C04B 1400

Patent

active

056269544

ABSTRACT:
Compositions and methods for manufacturing sheets having a hydraulically settable matrix. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers, and rheology-modifying agents) which impart predetermined properties so that a sheet formed therefrom has the desired performance criteria. The compositions are formed into sheets by first extruding them into a sheet and then calendering the sheet using a set of rollers. The calendered sheets are dried in an accelerated manner to form a substantially hardened sheet. The drying is performed by heated rollers and/or a drying chamber. The hydraulically settable sheets so formed may have properties substantially similar to sheets made from presently used materials like paper, cardboard, polystyrene, or plastic. Such sheets can be rolled, pressed, scored, perforated, folded, and glued. They have especial utility in the mass production of containers, particularly food and beverage containers.

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