METHOD FOR MANUFACTURING PREFORM REDUCED IN CONTENT OF ACETALDEHYDE BY COMPRESSION MOLDING METHOD AND MANUFACTURING METHOD FOR CONTAINER USING IT

PROBLEM TO BE SOLVED: To reduce the amount of acetaldehyde being a byproduct by a simple technique while suppressing the yellowing of the material of a container, to prevent the deterioration of the taste or aroma of a refreshing drink caused by a very small amount of acetaldehyde and to hold the tr...

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Hauptverfasser:	IMATANI TSUNEO, HASHIMOTO HIROYUKI, MOROFUJI AKIHIKO, KAI MASAJIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MAKING GRANULES OR PREFORMS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the amount of acetaldehyde being a byproduct by a simple technique while suppressing the yellowing of the material of a container, to prevent the deterioration of the taste or aroma of a refreshing drink caused by a very small amount of acetaldehyde and to hold the transparency of the container, in a method for preforming a preform by compression molding and molding the container by the blow molding of the preform. SOLUTION: A polyamide resin being an acetaldehyde reducing agent is compounded with a thermoplastic polyester resin in an amount of 0.1-5 wt.% and the compounded resin is plasticized at a low temperature to be preformed by compression molding to obtain the preform. This preform is molded by a blow molding method to obtain the container reduced in the content of acetaldehyde. COPYRIGHT: (C)2005,JPO&NCIPI