Method for the manufacturing of an absorbent structure and an absorbent article comprising an absorbent structure manufactured according to this method
Patent 5634915 Issued on June 3, 1997. Estimated Expiration Date: 
May 16, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 16, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLow density peat moss board Stabilized absorbent structure containing thermoplastic fibers High-density absorbent structures Twisted, chemically stiffened cellulosic fibers and absorbent structures made therefrom Absorbent structure designed for absorbing body fluids Absorbent article with superabsorbent particle containing insert pad and liquid dispersion pad Patent #: 5188624 InventorAssigneeApplicationNo. 442155 filed on 05/16/1995US Classes:604/379, Compressed layer604/367, Containing particular materials, fibers, or particles604/368, Collagen or gelling material604/374, Cellulose or cellulosic materials604/375, With additional chemical modifications (e.g., paper, chemical pulp, rayon, etc.)604/380Having discontinuous areas of compressionExaminersPrimary: Weiss, John G.Assistant: Cho, David J. Attorney, Agent or FirmForeign Patent References
International ClassA61F 013/15Foreign Application Priority Data1992-11-17 SEAbstractA method of producing an absorbent structure in an absorbent article includes the steps of compressing an air laid web of cellulose fibers into a dry-formed sheet having a first density of between 0.2-1.0 g/cm2 and mechanically softening the compressed sheet by a noncutting method to a second density, which is lower than the first density, whereby the sheet is delaminated so as to form a plurality of partially separated thin fiber layers, each of which layers exhibits a density which corresponds to the first density.Field of SearchCellulose or cellulosic materialsWith additional chemical modifications (e.g., paper, chemical pulp, rayon, etc.) Containing layers having differing absorption characteristics (e.g., flow control, wicking, etc.) Compressed layer Having discontinuous areas of compression Having specific fiber orientation or weave Containing particular materials, fibers, or particles Collagen or gelling material Foam or cellular structure material | |
