HIGH DENSITY POLYETHYLENE RESIN CONTAINER AND METHOD FOR MOLDING THE SAME

PROBLEM TO BE SOLVED: To provide an HDPE resin container having excellent surface glossiness, high rigidity and low water vapor permeability without, in particular, blending a synthetic resin of another kind or laminating another layer in biaxial stretch blow molding using an HDPE resin.SOLUTION: In...

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Bibliographische Detailangaben
Hauptverfasser:	OKUYAMA YUICHI, ENJOJI TARO
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 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 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 an HDPE resin container having excellent surface glossiness, high rigidity and low water vapor permeability without, in particular, blending a synthetic resin of another kind or laminating another layer in biaxial stretch blow molding using an HDPE resin.SOLUTION: In an biaxial stretch blow molding method for an HDPE resin container, a blow molding mold in which a cavity surface is mirror-finished is used and a temperature of the mold (Tmold) is set to be within a range expressed in the following formula (1): Tc-10°C≤Tmold≤Tc+10°C. In the formula (1), Tc is a crystallization temperature at temperature fall time of the HDPE resin used, and is a temperature at a peak position on a heat generation curve with crystallization in temperature falling crystallization measurement of 10°C/min by a differential scanning calorimeter.