Method for manufacturing bottomed cans and intermediate material for manufacturing bottomed cans

Abstract

Provided are a method for manufacturing bottomed cans and an intermediate material for manufacturing bottomed cans capable of obtaining high quality bottomed cans with high accuracy in positioning and suppression of distortion and warpage while making a desired portion of a blank thinner, and reducing an amount of scrap to be discarded. A method for manufacturing multiple bottomed cans from a metal raw plate includes a coining step of coining at least part of an area to be blank that becomes a blank in the raw plate, after the coining step, a forming step of punching a blank from the raw plate and drawing the obtained blank into a bottomed can shape, and before the coining step, a buffering hole forming step of piercing a material flow buffering hole between the areas to be blank in the raw plate.

Dependencies are inferred from the claim text.