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US 5,626,954 AGranted
Sheets made from moldable hydraulically settable materials
AssigneeE. Khashoggi Industries
InventorsPer J. Andersen, Simon K. Hodson
Life of this patent
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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. 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 hydraulically settable matrix formed from a hydraulically settable mixture comprising a hydraulically settable binder, rheology-modifying agent, fibers, and water, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix of the sheet such that the sheet can be bent, folded or rolled to significantly mechanically deform the sheet after the hydraulically settable matrix has been substantially dried without complete rupture of the hydraulically settable matrix, the hydraulically settable matrix of the sheet having a maximum thickness of about 3 mm.
An article of manufacture comprising a sheet having a hydraulically settable matrix formed from a hydraulically settable mixture comprising:
A sheet comprising a substantially hardened hydraulically settable matrix formed from a hydraulically settable mixture including a hydraulically settable binder, fibers, a rheology-modifying agent and water, the sheet having a maximum thickness of about 1 mm, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix of the sheet such that the sheet may be bent, folded or rolled to significantly mechanically deform the sheet without complete rupture of the hydraulically settable matrix.
An article of manufacture comprising a sheet having a substantially dried hydraulically settable matrix wound on a spool without complete rupture of the hydraulically settable matrix, said hydraulically settable matrix formed from a hydraulically settable mixture including a hydraulically settable binder, fibers, a rheology-modifying agent and water, wherein the fibers are substantially homogeneously dispersed throughout the hydraulically settable matrix of the sheet, said sheet having a maximum thickness of about 5 mm.
Dependencies are inferred from the claim text.