Absorbent article and production method thereof

An absorbent article, comprising:

• a liquid-pervious surface sheet,
• a liquid-impervious backside sheet opposing said surface sheet in a thickness direction of the absorbent article,
• an absorption body provided between said surface sheet and said backside sheet,
• a compressed groove defining a loop surrounding a central part of said absorbent article, and compressed in said surface sheet and said absorption body in the thickness direction, and
• a plurality of concave parts pin embossed in said surface sheet and said absorption body in the thickness direction, and
• an uncompressed region present in the central part and outside the central part of the absorbent article and along said compressed groove, and
• wherein a closest distance between said compressed groove and said concave parts is larger than a distance between closest adjacent concave parts among said concave parts.

A method of producing an absorbent article including

• a liquid-pervious surface sheet,
• a liquid-impervious backside sheet opposing said surface sheet in a thickness direction of the absorbent article,
• an absorption body provided between said surface sheet and said backside sheet,
• an endless compressed groove surrounding a central part of said absorbent article and formed in said surface sheet and said absorption body in the thickness direction,
• a plurality of concave parts provided in the central part and outside the central part of the absorbent article, said plurality of concave parts being formed in said surface sheet and said absorption body in the thickness direction, and
• an uncompressed region bordering inner and outer edges of the compressed groove, wherein
• a closest distance between said compressed groove and a nearest concave part is greater than a distance between closest adjacent concave parts among the plurality of concave parts, said method comprising:
• producing the absorption body,
• covering said absorption body with the surface sheet, and
• passing said absorption body covered with said surface sheet between (i) a first roller equipped with a convex part for forming a compressed groove and pins for pin embossing and (ii) a second roller to form
• the compressed groove resulting from compression of said surface sheet and said absorption body in the thickness direction with said convex part, and
• the plurality of concave parts resulting from compression of said surface sheet and said absorption body in the thickness direction by pin embossing with said pins.