TH8680B - sanitary napkin - Google Patents

Abstract

This invention relates to the new absorption structure and the absorption products that comprise this structure. In particular, this fabricated permeable structure consists of a large, high-density enclosing layer, a denser shipping layer, a very high-density storage layer. and a protective layer that water cannot seep with the covering and protective layer being sealed around the circle and in a good way, every The layers should be joined together to form a joint structure.

Claims (18)

1. A unit absorbent structure consisting of a closing layer (10), a delivery layer (20), and a retention layer (30), each such that (a) at least two of the aforementioned layers are in a manner that is in contact with each other to promote fluid transfer up between them; (b) the delivery layer (20) is of a lower density than the retention layer (30); (c) each of the aforementioned layers has pre-selected fluid retention conditions and transfer capacities; and (d) the delivery layer (20) tends to promote delivery to the retention layer (30) rather than fluid distribution along its length and width, while the retention layer (30) tends to promote fluid distribution and retention along its length and width, thus being characterized such that: (e) the closing layer (10) is of a lower density than the delivery layer (20) and tends to promote delivery to the delivery layer rather than fluid distribution along its length and width. 2. An absorbent structure as defined in claim 1 and further comprising an impermeable back plate (70) which extends beyond the boundary of the aforementioned fluid delivery layer (20) and fluid retention layer (30) and is affixed in a manner of at least a sealed connection to the aforementioned sealing layer (10). 3. The absorbent structure as defined in claim 1 or claim 2 herein, the fluid retention layer (30) is provided by a flexible fibrous sheet in which superconducting material is distributed. 4. The absorbent structure as per any of the preceding claims herein, the closed layer (10) mentioned above, consists of a non-woven, bulky, high-ceiling fiber material with a base weight between approximately 3.39 and 33.9 g/m² (approximately 0.1 and 1.0 oz/sq yard). 5. The absorption structure according to any of the preceding claims herein, the (10) sealing layer is approximately 0.508 mm (0.02 in.) to approximately 2.54 mm (0.10 in.) thick at 0.21 kPa (0.03 psi), and has a density of approximately 0.025 to approximately 0.12 g/cm³ at 0.21 kPa (0.03 psi). 6. The absorption structure according to claim 5 herein, the closed layer (10) has a wetted pore size distribution such that the size between approximately 15% and approximately 100% of the pores has a radius greater than 300 microns and the size between approximately 0% and 85% of the pores has a radius less than 300 microns. 7. The absorption structure according to one of the preceding claims, in this case the closed layer (10) consists of a polymer film that forms pores. 8. The absorbent structure under one of the preceding claims herein is a fluid delivery layer (20) of approximately 1.0 to approximately 3.8 mm (approximately 0.04 to approximately 0.15 in.) thickness at 0.21 kPa (0.03 psi), and a density of approximately 0.02 g/cm³ to approximately 0.10 g/cm³ at 0.21 kPa (0.03 psi). 9. The absorbent structure according to claim 8 herein, the fluid delivery layer (20) has a wetted hole size distribution between approximately 10% and approximately 50% of holes longer than 300 microns and between approximately 50 and approximately 90% of holes shorter than 300 microns. 10. The absorbent structure under any of the preceding claims herein, the delivery layer (20) is subject to a minimum permeability of 3.0 cubic meters/m²/min (10 cubic feet/m²/min) at 1.17 kPa(0.17psi). 11. The absorbent structure according to one of the preceding claims herein, the fluid storage layer (30) mentioned above, consists of a peat moss panel that has been compressed to an increased density. 12. The absorption structure pursuant to claim point 11 herein, the peat moss panel has been mechanically softened to increase its malleability. 13. An absorbent structure according to one of the preceding claims in which the fluid retention layer (30) is approximately 0.38 to approximately 2.54 mm (approximately 0.015 in. to approximately 0.10 in.) thick at 0.21 kPa (0.03 psi), and has a density of approximately 0.15 g/cm³ at 0.21 kPa (0.03 psi). 14. The absorbent structure according to claim 13 herein the fluid retention layer (30) has a wetted pore size distribution such that between approximately 90% and 100% of the pores have a radius shorter than 300 microns and between approximately 0% and 10% of the pores have a radius longer than 300 microns. 15. The device of incontinence consists of an absorbent structure of one of the preceding claims. 16. The flannel fabric contains an absorbent structure of one of the claims 1 through 14. 17. The bandage consists of an absorbent structure of any one of the claims 1 through 14. 18. The unified absorbent structure under Requisition 1 herein; the permeable closure layer (10) has an outer and inner surface; the fluid delivery layer (20) has an outer and inner surface composed of a hydrophilic fibrous sheet, the outer surface of the delivery layer shall be sealed to the inner surface of the said closure layer; the highly absorbent, highly retarding fluid storage layer (30) has an outer and inner surface composed of a hydrophilic material with a fluid binding capacity of at least approximately 7.5 g of salt per g of absorbent material, the outer surface of the fluid storage layer shall be sealed to the inner surface of the said fluid delivery layer; and the impermeable back sheet (70), the said closure layer and the said back sheet shall extend beyond the boundary of the delivery layer and the fluid storage layer and shall seal each other around the outer perimeter of the said absorbent structure.