Method for manufacturing biodegradable moldings in particular tableware and packages

Method for manufacturing biodegradable moldings, in particular tableware and packages, with application of the method of evoking the water vapor pressure inside the mold consists in that loose bran, preferably the wheat bran, of granulation from 0.01 up to 2.80 mm in the amount of 95-100% of weight...

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Bibliographic Details
Main Author Wysocki Jerzy
Format Patent
LanguageEnglish
Published 13.12.2016
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
COFFEE MILLS
DOMESTIC ARTICLES OR APPLIANCES
FIBREBOARD
FURNITURE
HOUSEHOLD OR TABLE EQUIPMENT
HUMAN NECESSITIES
MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS ORFROM PAPIER-MACHE
PAPER-MAKING
PERFORMING OPERATIONS
PRODUCTION OF CELLULOSE
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
SPICE MILLS
SUCTION CLEANERS IN GENERAL
TEXTILES
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Method for manufacturing biodegradable moldings, in particular tableware and packages, with application of the method of evoking the water vapor pressure inside the mold consists in that loose bran, preferably the wheat bran, of granulation from 0.01 up to 2.80 mm in the amount of 95-100% of weight containing more than 14% of water structurally bound in the form of moisture, if needed, is mixed in the dry form with additional substances in the amount of up to 5% of weight in total, and the measured amount of dry material obtained in that way is placed in one of the parts of multipart mold, then the mold is closed and the mixture is subject to the simultaneous operation of temperature and pressure of the scope 1-10 MPa. The mold is heated up to temperature above 120° C., then the mold is closed, and then is depressurized, thus forming a gap between the edges of the mold not wider than 0.5 mm, and then the mold, if needed, is closed again, and the depressurization cycles are repeated. After the last cycle the mold is opened and the number of depressurizations is at least 1, and the entire process of depressurization and closing the mold takes a few seconds and is completed according to the program of the machinery digitally controlling the mold movement depending on the expected parameters of the final product.
Bibliography:Application Number: US201514672872