초록 ▼

Compositions and methods for manufacturing sheets having a highly inorganically filled matrix. Suitable inorganically filled mixtures are prepared by mixing together an organic polymer binder, water, one or more inorganic aggregate materials, fibers, and optional admixtures in the correct proportion

Compositions and methods for manufacturing sheets having a highly inorganically filled matrix. Suitable inorganically filled mixtures are prepared by mixing together an organic polymer binder, water, one or more inorganic aggregate materials, fibers, and optional admixtures in the correct proportions in order to form a sheet which has the desired performance criteria. The inorganically filled mixtures are formed into sheets by first extruding the mixtures and the passing the extruded materials between a set of rollers. The rolled sheets are dried in an accelerated manner to form a substantially hardened sheet, such as by heated rollers and/or a drying chamber. The inorganically filled sheets may have properties substantially similar to sheets presently made from traditional materials like paper, cardboard, polystyrene, plastic, or metal. 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.

대표청구항 ▼

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] A method for manufacturing an inorganically filled sheet comprising:mixing water, a water-dispersible organic polymer binder, an inert inorganic aggregate filler, and a fibrous material to form a moldable inorganic

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] A method for manufacturing an inorganically filled sheet comprising:mixing water, a water-dispersible organic polymer binder, an inert inorganic aggregate filler, and a fibrous material to form a moldable inorganically filled mixture having a water concentration such that the mixture has a yield stress in a range from about 2 kPa to about 5 MPa;extruding the moldable inorganically filled mixture into a green form stable sheet; anddrying the green sheet in an accelerated manner to evaporate a substantial portion of the water to thereby harden the water-dispersible organic polymer binder and form a substantially dried inorganically filled sheet, the sheet having a thickness up to about 2 cm.