Absorbent pants-type diaper

In an absorbent pants-type diaper which is intended for one-time use only and which comprises:

• a front part having side edges and an end edge;
• a back part having side edges and an end edge;
• a crotch part between the front and back parts;
• at least two side-closure parts which mutually join parts of the side-edges of respective front and back parts, so that the pants-type diaper will present a waist opening and two leg openings;
• an elongated absorbent pad comprising at least one absorbent layer having a front and a rear end part and an intermediate central part;
• an inner casing layer placed on that side of the absorbent layer which is intended to face towards a wearer;
• and
• an outer casing layer which is placed on the other side of the absorbent layer, the improvement wherein at least one of the respective front and back parts has at least one elastically stretchable region;
• the crotch part being essentially non-stretchable in relation to said stretchable region;
• at least one of the respective end parts of the absorbent layer being disposed within one of said elastically stretchable regions;
• the central part of the absorbent layer being disposed within the relatively non-stretchable crotch part of the diaper;
• at least one of the stretchable regions being disposed on the side of the absorbent layer facing away from the inner casing layer, whereby those forces that are exerted by the elastically stretchable region on at least one of the end part of the absorbent layer function to hold the absorbent layer in sealing abutment with the wearer when the pants-type diaper is worn;
• and at least one of the end edge of the front and the back parts has at the waist opening of the pants at least one elastically stretchable waist part whose stretching and contraction power is greater than the remainder of the stretchable region.