TH17128A - A specially formulated absorbent material for menstrual flow that enhances direction, comfort, and a secure fit during use. - Google Patents

Abstract

Absorbent materials, especially in sanitary pads, consist of fibers with small openings within the fibers. During use, these small openings in the fibers transport menstrual fluid to the accumulating membrane, reducing product failure and minimizing soiling of underwear. The small openings in the fibers can extend into or through the top layer, which is designed for the passage of heavy vaginal discharge.

Claims (43)

1. The absorbent material consists of: a) a top layer, a film-like structure not made of permeable fibers, with a superficial core supporting the liquid and a back layer. The top layer has several interconnected openings between the top and back layers for the flow of liquid from the top layer. b) a membrane layer composed of microscopic, water-permeable fibers, with an average width less than the width of the openings in the top layer. This membrane layer sits beneath the back layer on top layer (a) and is in contact with the liquid flowing through it. c) a moisture-absorbing fiber framework that supports air and wetness, sitting beneath membrane layer (b) and in contact with the flowing liquid. This framework consists of numerous non-porous fibers or a mixture of these fibers, with a gel material acting as the absorbent. In this case, the average width of the spaces between the numerous fibers in the moisture-absorbing framework is less than the width of the microscopic, water-permeable openings in the fibers of membrane layer (b). d) an impermeable back layer sitting beneath layer (c). 2. The material referred to in claim 1 herein is a micro-pore fiber that can be immediately wetted. 3. The material under claim 1 herein, the contact between the top sheet and the membrane of the small open tube fibers is maintained by the tensile force between the top sheet and the membrane layer. 4. The material under claim 1 herein, the contact between the top sheet and the membrane over the micro-opening tubular fibers is maintained by a bonding medium. 5. The material under claim 4 herein is a small open tube with the key characteristic of being able to curve and bend. 6. The material under claim 5 herein is a small open tube with a wavy structure and is positioned so that the tube opening is well aligned with the direction of the machinery. 7. The material referred to in Claim 1 herein consists of small, open tubular fibers with a wavy structure, and some of the fibers extend towards the upper sheet. 8. The material according to claim 1 herein, the moisture-absorbing framework (c) consists of a wet pad composed of rigid and finely textured corrugated cellulose fibers. 9. The material according to claim 8 herein, the moisture-absorbing framework (c) consists of a wetting pad composed of corrugated cellulose fibers with strong and fine chemically bonded crosslinkings. 10. The material under claim 1 herein, some of the filaments in membrane layer (b) have at least some extension into the framework (c). 11. The material under claim 1 herein, some of the fibers in the membrane layer (b) have at least some extension into the top sheet (a) and in the framework (c). 12. The material under claim 1 herein, some of the filaments in layer (b) at least partially extend into the upper platform. 13. The absorbent material consists of: a) a permeable top layer of fibers with a front surface to receive liquid and a back surface to receive liquid, in which the top layer has numerous interconnected pores between the front and back layers for the flow of liquid from the top layer; b) a membrane layer consisting of numerous pore-bearing fibers with small tubules on the outside arranged below the front and back of the top layer, in which contact occurs with the liquid flowing through; and c) a moisture-absorbing fiber framework surrounding the air pocket or moisture-receiving membrane layer (c), in which contact occurs with the liquid flowing through. This framework consists of numerous non-pore-bearing fibers or a mixture of such fibers with an absorbent gel material. 14. The material according to claim 13 herein, the spaces between the fibers, consisting of the openings in the top sheet (a) are on average larger than the width of the small openings in the fibers themselves in the membrane layer (b). 15. The material under claim 14 herein, on average, the width of the spaces between the numerous fibers in the moisture-absorbing framework (c) is less than the width of the small openings in the fibers of the membrane layer (b). 16. The absorbent material consists of a membrane layer of fibrous pores with small, raised, fluffy fibers protruding above the membrane. This fluffy membrane layer acts as the contact point for the transfer of fluid flowing to the moisture-absorbing framework. 17. The materials under claim 16 herein, the absorbent framework, consists of a wet-retaining fiber framework, an air-retaining fiber framework, or a sheet filled with an absorbent gel material. 18. The material referred to in claim 17, herein the form of fluff, is in contact with liquid flowing through the permeable surface of the top sheet. 19. Other components of the additional absorbent material include the absorbent core, top sheet, back sheet, and additional membrane sections with small open tubes for fluid control. 20. Fluid Receiving and Transfer Structure. A suitable fluid transfer structure for use in absorbent materials consists of: a) a non-permeable, non-fiberized film-like top sheet with a fluid receiving sheet and a back sheet. The top sheet has several interconnected openings between the front and back sheets for the transfer of fluid flowing into the top fan; and b) a membrane composed of numerous fibrous strands with small openings in the outer fibers of the front and back sheets of the top sheet and in the fluid transfer contact area. Here, the width of the openings in the top sheet (a) is on average larger than the width of the small openings in the fibers of the membrane layer (b). 21. Framework pursuant to claim 20 herein, the contact between the top plate and the membrane of the small open tube fibers is maintained against the tensile force between the top plate and the membrane. 22. Framework according to claim 20: Here, the contact between the top plate and the membrane layer of micro-pore fibers is maintained by a bonding medium. 23. The framework under claim 20 here features a wavy, undulating pattern of small openings. 24. The framework under claim 22 here features a wavy, undulating web of small openings, positioned so that the pipe openings are well-aligned with the machinery. 25. The framework according to claim 24 herein, the structure between the top plate (a) and the micro-pore membrane (b) is attached in a coiled or concentric manner. 26. The outline pursuant to claim 25 herein consists of small, wavy, opening fibers and portions of the fibers extending into the top film sheet. 27. The outline pursuant to claim 20 herein, small opening threads partially extend into the aforementioned top plate. 28. Sanitary pads, panty liners, diapers, adult incontinence absorbent materials, bandages or similar items incorporating the outline of Patent 20 and the following additional components: (c) an impermeable back sheet under a fibrous membrane with small openings; (b) 29. Sanitary pads and underwear linings under patent 20. In this case, the micro-opening membrane (b) has a menstrual acidity of at least approximately 2 cm³ per gram in the interfacial space. 30. Fluid Receiving and Fluid Transfer Structure. A suitable fluid absorbent material consists of: a) A permeable top layer of fibrous material with a front surface that receives the fluid and a back surface. The top layer has interconnected openings between the fibrous material between the front and back surfaces for the transfer of fluid flowing down to the top layer. b) A membrane layer composed of numerous fibrous material with small external openings located beneath the back surface of the top layer and in contact with the fluid being transferred in that area. Here, the interconnected spaces between the fibrous material, comprising the openings in the top layer (a), are on average larger than the central size of the small openings in the fibrous material of the membrane layer (b). 31. The framework pursuant to claim 30 herein, the fibers, with small openings, have immediate wetting capability. 32. Framework pursuant to claim 30: Here, the contact between the top plate and the membrane layer of the small opening is maintained. The tensile force between the top plate and the membrane layer is maintained. 33. Framework pursuant to claim 30: Here, contact between the top plate and the fibrous membrane of the small open tube is maintained by a bonding medium. 34. The framework pursuant to claim 30 here features small, open, wavy fibers. 35. The framework pursuant to claim 33 here features a small, open, wavy pipe structure, positioned so that the pipe opening is well-aligned with the machinery. 36. The framework pursuant to claim 35 herein, the bonds between the top plate (a) and the small open tubular fibrous membrane (b) are held together in a coiled, cyclic manner. 37. The outline pursuant to claim 36 herein consists of small, wavy, open tubular fibers, with some fibers extending into the fiber sheet. 38. The outline pursuant to claim 36 herein, some small open tube-like threads extend through the top plate. 39. Sanitary pads, panty liners, diapers, absorbent materials, adult incontinence products, bandages or similar items containing the framework of claim 30 have the following additional components: (c) a back sheet that prevents fluid from flowing under a small opening in the tubular membrane; (b) 40. Sanitary pads or underwear liners, as per claim 35, herein the small opening of the tubular fiber layer (9b), have the ability to absorb at least approximately 2 cm³ per gram of menstrual fluid. 41. The fluid control material consists of a membrane, a layer of small, open fibrous tubes with fluffy fibers protruding above the membrane layer. 42. The material referred to in claim 41 herein, the fibrous strands, are in contact with the fluid transmission and the permeable top sheet. 43. Additional material consisting of small, open tubular fibers acting as a fluid control membrane (Clause 43, 5 pages, 13 figures).