BLOW-MOLDING METHOD FOR BOTTLE MADE OF SYNTHETIC RESIN

PROBLEM TO BE SOLVED: To provide a blow-molding method for a bottle made of a synthetic resin by which the bottom section of the bottle made of the synthetic resin can evenly be stretched, and both of the thinning, and the increase of the strength and the heat resistance can be satisfied, and in add...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TOMIZAWA KATSUMASA, SAKURAI YASUFUMI, MIYAZAKI SHUNZO, MATSUSHIMA KOJI
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 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a blow-molding method for a bottle made of a synthetic resin by which the bottom section of the bottle made of the synthetic resin can evenly be stretched, and both of the thinning, and the increase of the strength and the heat resistance can be satisfied, and in addition, the bottle made of the synthetic resin of a reduced cost can be obtained by a comparatively small number of processes.SOLUTION: An internal pressure is imparted to a preform 1a in a mold body section 16 in an expansion/swelling process under a state wherein a mold bottom section 17 is positioned at a second specified position which is lower than a first specified position, and an intermediate molded body 1b having a bottom swollen section 1c for which the lower section is made to swell downward is formed. At this time, the bottom swollen section 1c is not into contact with the mold bottom section 17, or comes into contact with the mold bottom section 17 by leaving at least a part of a rib molding section 25. Then, the mold bottom section 17 is moved from the second specified position to the first specified position in a bottom section molding process, and the bottom swollen section 1c is thrusted up, and thus a bottom recess section 7 is formed while molding a bottom rib 9.