Toyoshi Umebayashi, Osaka, Japan.
Assigned to Zuiko Corporation, Osaka, Japan.

Filed: 3/14/20
Issued: 12/26/23

A method for manufacturing an absorbent core of a disposable wearable article, wherein the method uses a feed device, a first drum, and a second drum, the feed device feeds crushed fiber, the first drum is provided with a first area, where the crushed fiber is sucked and made to cling to an outer circumferential portion of the first drum and stacked, and the second drum is provided with a second area, where the crushed fiber is sucked and made to cling to an outer circumferential portion of the second drum and stacked, the second area being smaller than the first area, wherein the method comprises: a step of forming a thick portion on the second area of the second drum by stacking the fiber fed from the feed device; a step of forming a thin portion on the first drum, the thin portion having a grammage lower than a grammage of the thick portion and being formed on the first area except an inhibition area, the inhibition area being an area where stacking of the fiber of the thin portion is inhibited; and a step of transferring the thick portion from the second drum to the inhibition area of the first drum and fitting the thick portion into the thin portion, resulting in the absorbent core formed of the crushed fiber.