Disposable diaper for pet and method for manufacturing disposable diaper for pet

A disposable diaper for a pet, comprising:

• a main body comprising a topsheet, a backsheet, and an absorbent core between the top sheet and the backsheet;
• and
• a binding portion that binds opposing parts of the main body when the disposable diaper is wrapped around a waist of the pet in a wearing state, wherein
• the main body further comprises:
• a main-body first end at one end in a waistline direction of the disposable diaper;
• a main-body second end at another end in the waistline direction opposite to the main-body first end and that is on an outside of the disposable diaper in the wearing state;
• a main-body third end at one end in a cross direction of the disposable diaper and that is on a head-side of the pet in the wearing state, wherein the cross direction is orthogonal to the waistline direction;
• a main-body fourth end at another end in the cross direction opposite to the main-body third end and that is on a crotch-side of the pet in the wearing state;
• and
• a mark portion, visible from a side of the backsheet, that indicates a position of the main-body second end in the wearing state,
• the mark portion comprises:
• a head-side mark portion disposed on one side from a center of the disposable diaper in the cross direction toward the main-body third end;
• and
• a crotch-side mark portion disposed on another side from the center of the disposable diaper in the cross direction toward the main-body fourth end,
• the head-side mark portion is farther from a center of the disposable diaper in the waistline direction than the crotch-side mark portion.

A method for manufacturing a disposable diaper for a pet, the method comprising:

• feeding a continuous sheet arrayed with sheet components;
• disposing a mark portion on the continuous sheet;
• laminating an absorbent core on the continuous sheet with the mark portion;
• and
• detecting, during the laminating, a position of the mark portion on the continuous sheet;
• and
• adjusting a position of lamination of the absorbent core based on the position of the mark portion.