CAN, ITS MANUFACTURE, AND DEVICE FOR MANUFACTURING THE SAME

• Main Authors: HOSOI MASAHIRO, HANABUSA TATSUYA
• Format: Patent
• Language: English
• Published: 08.06.1999
• Edition: 6
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a can, its manufacturing method, and a manufacturing device wherein the thickness of the can, in particulay the thickness of the can bottom can be made thinner, and at the same time, the can bottom does not generate a deformation, and a sufficient can strength can be ensured. SOLUTION: For this can, a plurality of recessed parts 21 are formed in the circumferential direction on the inner peripheral wall (inner wall) 17b of an annular protruding part 17. Thus, the rigidity, especially the rigidity against stresses in the can axial direction of the inner peripheral wall 17b can be increased, and even by an action of the internal pressure, a strain (elongation) in the can axial direction is prevented from arising on the inner peripheral wall 17b, and deformations to the lower part and to the outside in the radial direction of the annular protruding part 17 are prevented from arising.