METHOD FOR PRODUCING A NONWOVEN FABRIC PERFORATED WITHOUT PHYSICAL OR THERMAL DEFORMATION AND AN ABSORBING PRODUCT HAVING SUCH A NONWOVEN FABRIC

摘要

1. A method of manufacturing a non-woven fabric perforated without physical or thermal deformation, comprising:! fiber blending; ! opening mixed fibers; ! carding of open fibers; ! perforation of carded fibers without physical or thermal deformation; connection of perforated fibers; and! final processing of connected fibers. ! 2. The method according to claim 1, in which the perforation involves intermittent ejection of air in the direction of the carded fibers with a given pressure with the formation of perforations and pushing the carded fibers around the perforation. ! 3. The method according to claim 1, in which carding and punching are carried out simultaneously so that open fibers are carded on the conveyor for carding with protrusions on it with the formation of a perforated web, and the connection involves the application of a given air pressure or variable pressure to the top side and / or underside of the web. ! 4. Non-woven fabric perforated without physical or thermal deformation, which is produced by the method according to any one of claims 1 to 3. ! 5. The nonwoven fabric according to claim 4, in which the total perforation area is in the range of 5 ~ 80% of the total area of the nonwoven fabric. ! 6. Non-woven fabric according to claim 4, in which the diameter of the perforation is in the range of 2 ~ 30 mm ! 7. The nonwoven fabric according to claim 6, in which the diameter of the perforation is in the range of 5 ~ 10 mm ! 8. Non-woven fabric according to claim 4, in which the weight of the basis of the perforated non-woven fabric is in the range of 20 ~ 400 g / m2. ! 9. An absorbent article comprising:! liquid permeable top sheet; ! impervious to liquid