METHOD OF MANUFACTURING BIODEGRADABLE CONTAINER, AND BIODEGRADABLE CONTAINER MANUFACTURED BY THE METHOD

PROBLEM TO BE SOLVED: To provide a method of manufacturing a biodegradable container, capable of foaming and baking a biodegradable material in a short time while preventing half-baking of an opening edge.SOLUTION: The method of manufacturing a biodegradable container comprises a step of molding a c...

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Bibliographische Detailangaben
Hauptverfasser:	HOYAMA TETSUJI, JINGU TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HANDLING THIN OR FILAMENTARY MATERIAL INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of manufacturing a biodegradable container, capable of foaming and baking a biodegradable material in a short time while preventing half-baking of an opening edge.SOLUTION: The method of manufacturing a biodegradable container comprises a step of molding a container-shaped foam base material layer by use of a foam molding mold 6 composed of a pair of mutually fittable male die 4 and female die 5, each of the dies containing a heater and being electrically connected to a high frequency oscillator, by mutually fitting the male die 4 and the female die 5 with a biodegradable material containing water interposed therebetween, and baking the biodegradable material while steam-foaming the biodegradable material by heating from the heaters and induction heating by application of high-frequency wave and diffusing steam to the outside through a portion corresponding to the opening edge. The mold 6 is formed to have a dimension such that the thickness of an opening edge 1a is smaller than the thicknesses of a bottom portion and a body portion. The step of molding the container-shaped foam base material layer by steam-foaming the biodegradable material includes a step of collectively applying the high-frequency wave to the thin opening edge 1a to collectively heat the opening edge.