Absorbent cicatrization dressing and uses thereof for chronic wounds

An absorbent dressing for healing an exudating wound, comprising:

• a—an exudate superabsorbent nonwoven compress formed from a mixture of bicomponent superabsorbent fibers and of thermal bonding non-absorbent fibers, all of the fibers being thermally bonded, and,
• b—a micro-adherent wound contact layer attached to a face of the superabsorbent nonwoven compress that in use faces the exudating wound and avoids contact of the superabsorbent nonwoven compress with the exudating wound, said wound contact layer comprising openings which cover between 50% and 80% of the face of the exudate superabsorbent nonwoven compress before being exposed to exudates from the exudating wound, so that said openings allow passage of the exudates from the exudating wound during healing of the exudating wound, and each of the openings of the wound contact layer has a surface area between 0.5 and 10 mm2,
• the micro-adherent wound contact layer comprising an micro adherent elastomer composition that comprises:
• 0.05% to 1% by weight of antioxidant;
• 30% to 40% by weight of tackifying resin;
• 2% to 20%, by weight of hydrocolloid;
• 35% to 45% by weight of plasticizer comprising mineral oil;
• 4% to 6% by weight of a poly(styrene-ethylene-butylene-styrene) or poly(styrene-ethylene-propylene-styrene) triblock polymer;
• and
• 2% to 8% by weight of a copolymer consisting of a salt of 2 methyl-2 [(1 oxo-2 propenyl)amino]-1 propanesulfonic acid and of the 2 hydroxyethylester of propenoic acid, and
• the wound contact layer having a basis weight that ranges from 110 to 500 g/m2, and said wound contact layer is an elastomeric matrix in which hydrocolloids are homogeneously dispersed, the proportion of hydrocolloids being between 2% and 20% by weight of the weight of said wound contact layer, and the wound contact layer being attached to the exudate superabsorbent nonwoven compress without a fabric substrate, in order that the absorbent dressing remains flexible and adopts the shape of a body.