Pet diaper and method for manufacturing same

A pet diaper configured to extend in a lateral direction along a waist of a pet and in a longitudinal direction from a ventral side to a dorsal side of the pet, the lateral direction being orthogonal to the longitudinal direction, and the pet diaper comprising:

• a main body including an absorbent core and a tail hole configured to pass feces of the pet;
• a first elastic string attached to the main body in a stretched state and extending at least from a ventral-side edge of the tail hole to a dorsal-side edge of the absorbent core in the longitudinal direction;
• and
• a leakproof gather disposed at a position outside the absorbent core in the lateral direction, the leakproof gather comprising:
• a second elastic string that extends in the longitudinal direction;
• a standing portion that stands upright by contraction of the second elastic string;
• and
• a vertical fixed portion that serves as a standing fulcrum of the standing portion in the longitudinal direction, wherein
• the vertical fixed portion is fixed to the main body at a position outside the absorbent core in the longitudinal direction,
• the first elastic string is disposed at a position outside the leakproof gather in the lateral direction,
• a stretch ratio of the first elastic string is higher than a stretch ratio of the second elastic string,
• the main body further includes a tongue piece including:
• a base end portion coupled to a dorsal-side edge of the tail hole, and
• a distal end portion opposite to the base end portion,
• the tongue piece uncovers the tail hole when folded back with the base end portion as a fold line, and
• the distal end portion of the tongue piece is directed to the ventral side or in the lateral direction when the tongue piece is not folded back.