US 12,409,969 B2
Manufacturing method of bottle-shaped can formed of metal sheet coated with colored resin
Hiroyuki Ohno, Sagamihara (JP); and Yukikazu Hiraide, Sagamihara (JP)
Assigned to DAIWA CAN COMPANY, Chiyoda-ku (JP)
Appl. No. 18/549,664
Filed by DAIWA CAN COMPANY, Chiyoda-ku (JP)
PCT Filed Feb. 9, 2022, PCT No. PCT/JP2022/005013
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/190747, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 2021-036099 (JP), filed on Mar. 8, 2021.
Prior Publication US 2024/0150062 A1, May 9, 2024
Int. Cl. B65D 1/02 (2006.01); B65D 1/40 (2006.01); B65D 65/42 (2006.01)
CPC B65D 1/0215 (2013.01) [B65D 1/40 (2013.01); B65D 65/42 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A manufacturing method of a bottle-shaped can formed of a metal sheet coated with a colored resin coating having a forming process including forming a cylindrical can trunk by drawing or ironing the metal sheet coated with the colored resin coating, and printing a design on an outer surface of the can trunk, comprising:
painting a predetermined section of the outer surface of the can trunk multiple times while changing colors of inks thereby collecting samples of colors resulting from mixing the colors of the inks with a ground color of the predetermined section;
preparing a tone chart by groups of hues of the colors having a same brightness and colorfulness;
determining a color scheme of the design with reference to the tone chart; and
printing the design on the predetermined section in the determined color scheme.