Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1996-04-09
1998-04-07
Bell, James J.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 365, 428 3692, 428 43, 428152, 428182, 4283179, 428532, 428906, B32B 108, B32B 502, B32B 2318
Patent
active
057362092
ABSTRACT:
Compositions and methods for manufacturing sheets having a starch-bound matrix reinforced with fibers and optionally including an inorganic mineral filler. Suitable mixtures for forming the sheets are prepared by mixing together water, unmodified and ungelatinized starch granules, a cellulosic ether, fibers, and optionally an inorganic mineral filler in the correct proportions to form a sheet having desired properties. The mixtures are formed into sheets by passing them between one or more sets of heated rollers to form green sheets. The heated rollers cause the cellulosic ether to form a skin on the outer surfaces of the sheet that prevents the starch granules from causing the sheet to adhere to the rollers upon gelation of the starch. The green sheets are passed between heated rollers to gelatinize the starch granules, and then to dry the sheet by removing a substantial portion of the water by evaporation. The starch and cellulosic ether form the binding matrix of the sheets with the fibers and optional inorganic filler dispersed throughout the binding matrix. The starch-bound sheets can be cut, rolled, pressed, scored, perforated, folded, and glued to fashion articles from the sheets much like paper or paperboard. The sheets are particularly useful in the mass production of containers, such as food and beverage containers.
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Andersen Per Just
Christensen Bruce J.
Hodson Simon K.
Ong Shaode
Bell James J.
Copenheaver Blaine R.
E. Kashoggi, Industries, LLC
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