METHOD FOR MANUFACTURING THREADED BOTTLE CAN AND THREADED BOTTLE CAN

A method for producing a screw-top bottle-can and a screw-top bottle-can is provided so that a thread-forming process can be operated without damaging an inner coating and a resealing operation is improved. A shoulder part is formed by reducing a diameter of an aperture part of a closed-end cylindri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HOSOI, Masahiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR 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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PUNCHING METAL STORING TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A method for producing a screw-top bottle-can and a screw-top bottle-can is provided so that a thread-forming process can be operated without damaging an inner coating and a resealing operation is improved. A shoulder part is formed by reducing a diameter of an aperture part of a closed-end cylindrical body, a cylindrical part having an intermediate diameter between a major thread diameter and a minor thread diameter and a tapered part which is tapered from an upper end of the cylindrical part toward an open-end part are formed above the shoulder part, and performing a thread-forming process from the tapered part to the cylindrical part so as to form a starting part of the screw-thread at a middle part of the tapered part.