LAMINATED SHEET AND FORMED CONTAINER
Provided is a perfectly-decomposable, biodegradable barrier sheet that has an excellent thermoformability and oxygen barrier performance, and can transform into carbon dioxide and water via microbial degradation (biodegradation) during composting and thus return to nature. Further provided is a cont...
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| creator | TOKUNAGA, Hisatsugu MURAOKA, Takashi KUMAKURA, Seiichi |
| description | Provided is a perfectly-decomposable, biodegradable barrier sheet that has an excellent thermoformability and oxygen barrier performance, and can transform into carbon dioxide and water via microbial degradation (biodegradation) during composting and thus return to nature. Further provided is a container obtained by thermoforming the barrier sheet. This laminated sheet is provided with an oxygen-barrier resin layer and biodegradable resin layers laminated via an adhesive layer to both surfaces of the oxygen-barrier resin layer. The total percentage by mass of the biodegradable resin layers is at least 90% of the entire sheet, and the percentage by mass of each biodegradable resin layer is at least 10% of the entire sheet. The oxygen transmission rate of the entire sheet does not exceed 10 cc/m2·day. At least one substance selected from polylactic acid, polybutylene succinate, polyhydroxybutyrate, polycaprolactone, polyhydroxyalkanoate, polyglycolic acid, modified polyvinyl alcohol, and starch is used in the biodegradable resin. |
| format | Patent |
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Further provided is a container obtained by thermoforming the barrier sheet. This laminated sheet is provided with an oxygen-barrier resin layer and biodegradable resin layers laminated via an adhesive layer to both surfaces of the oxygen-barrier resin layer. The total percentage by mass of the biodegradable resin layers is at least 90% of the entire sheet, and the percentage by mass of each biodegradable resin layer is at least 10% of the entire sheet. The oxygen transmission rate of the entire sheet does not exceed 10 cc/m2·day. 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Further provided is a container obtained by thermoforming the barrier sheet. This laminated sheet is provided with an oxygen-barrier resin layer and biodegradable resin layers laminated via an adhesive layer to both surfaces of the oxygen-barrier resin layer. The total percentage by mass of the biodegradable resin layers is at least 90% of the entire sheet, and the percentage by mass of each biodegradable resin layer is at least 10% of the entire sheet. The oxygen transmission rate of the entire sheet does not exceed 10 cc/m2·day. At least one substance selected from polylactic acid, polybutylene succinate, polyhydroxybutyrate, polycaprolactone, polyhydroxyalkanoate, polyglycolic acid, modified polyvinyl alcohol, and starch is used in the biodegradable resin.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING |
| title | LAMINATED SHEET AND FORMED CONTAINER |
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