Patent ID: 9517578
Filing Date: 2016-12-13
CPC Classification: A47G,B29C,D21J

Claim Text:
1. A method for manufacturing biodegradable moldings with application of the method of evoking water vapor pressure inside the mold comprising the following steps (a) mixing loose 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, to obtain the loose material; (b) heating the mold to temperature higher than 120° C.; (c) placing in one of the parts of the multipart mold measured amount of the loose material obtained in (a); (d) closing the mold and subjecting the mixture of bran to a simultaneous operation of temperature and pressure in the scope of about 1-10 MPa; (e) depressurizing the mixture without complete opening of the mold by forming a gap between the edges of the mold not wider than 0.5 mm, wherein the depressurizing is performed at least one time; (f) optionally closing the mold and repeating steps (d), (e), and/or (f), wherein each step (d) lasts 1-2 seconds and each step (e) lasts 0.5-1 second, and the entire process of closing (d) and depressurizing (e) takes a few seconds and is carried out according the program of the machinery digitally controlling the mold movement depending on the expected parameters of the final product; and (h) opening the mold after the last cycle, thereby manufacturing biodegradable moldings having a density of at least 1.400 g/cm