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US 5,614,307 AGranted
Sheets made from moldable hydraulically settable compositions
AssigneeE. Khashoggi Industries
InventorsPer J. Andersen, Simon K. Hodson
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AssigneeE. Khashoggi Industries
InventorsPer J. Andersen, Simon K. Hodson
Estimating the term…
Compositions and methods for manufacturing sheets having a hydraulically settable matrix are disclosed. 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.
An article of manufacture comprising a sheet having a substantially dried hydraulically settable matrix formed from a hydraulically settable mixture comprising a hydraulically settable binder, fibers, a rheology-modifying agent, and water, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix, the hydraulically settable matrix having a maximum thickness of about 5 mm and a coating on at least a portion thereof and being characterized in that it can be bent, folded or rolled to significantly mechanically deform the matrix without complete rupture of the hydraulically settable matrix.
An article of manufacture comprising a sheet having a hydraulically settable matrix, said matrix having a maximum thickness of about 1 cm, having a coating on at least a portion thereof, and being formed from a hydraulically settable mixture comprising:
A hydraulically settable sheet formed from a hydraulically settable mixture comprising a hydraulically settable binder, fibers, a rheology-modifying agent, and water, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix, the hydraulically settable matrix having a maximum thickness of about 1 mm, having a coating on at least a portion thereof, and being characterized in that it can be bent, folded or rolled to significantly mechanically deform the sheet without complete rupture of the hydraulically settable matrix after the hydraulically settable sheet has been substantially dried.
An article of manufacture comprising a sheet having a hydraulically settable matrix, said matrix having a maximum thickness of about 1 mm and being formed from a hydraulically settable mixture comprising a hydraulically settable binder, fibers having a concentration greater than about 5% by weight of the hydraulically settable mixture, a rheology-modifying agent and water, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix, said matrix further comprising a coating on at least a portion thereof.
An article of manufacture comprising a substantially dried and coated hydraulically settable sheet that is wound on a spool without complete rupture of the sheet, said sheet having a maximum thickness of about 1 cm and being formed from a hydraulically settable mixture comprising a hydraulically settable binder, fibers, a rheology-modifying agent and water, the hydraulically settable sheet including a coating on at least a portion thereof, the fibers being substantially homogeneously dispersed throughout the hydraulically settable sheet.
Dependencies are inferred from the claim text.