초록

The present invention provides a tunable sound absorption facing which includes a cellulosic web and a nonwoven web entangled together. The facing has a controllable air flow resistance.

대표청구항 ▼

1. An acoustically tunable sound absorption facing comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer and the nonwoven fiber batt are entangled together. 2. The sound absorption facing of claim 1, wherein the cellulosic layer is in the form of a web or sheet. 3. Th

1. An acoustically tunable sound absorption facing comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer and the nonwoven fiber batt are entangled together. 2. The sound absorption facing of claim 1, wherein the cellulosic layer is in the form of a web or sheet. 3. The sound absorption facing of claim 1, wherein the cellulosic layer comprises about 20 to 60 percent by weight of the sound absorption facing and wherein the nonwoven batt comprises about 40 to 80 percent by weight of the sound absorption facing. 4. The sound absorption facing of claim 1 having an acoustic impedance in the range of about 245 Rayls to about 2450 Rayls. 5. The sound absorption facing of claim 1 having a basis weight of at least about 0.7 ounces per square yard. 6. The sound absorption facing of claim 1 further comprising a flame retardant. 7. The sound absorption facing of claim 1 further comprising a film-forming binder. 8. The sound absorption facing of claim 1, wherein the cellulosic layer and the nonwoven fiber batt are entangled via spunlacing. 9. The sound absorption facing of claim 1, wherein the sound attenuating properties of the sound absorption facing are modified by one or more mechanical processes and/or one or more chemical treatment processes. 10. The sound absorption facing of claim 1, wherein the cellulosic layer comprises wood fibers, cotton fibers and/or viscose fibers. 11. The sound absorption facing of claim 1, wherein the nonwoven fiber batt comprises one or more fibers selected from the group consisting of polypropylene fibers, polyethylene fibers, polyethylene terephthalate fibers, polyester fibers, acetate fibers, nylon fibers, polylactic acid fibers, glass fibers, viscose fibers, aramid fibers, polybenzimidazole fibers, melamine fibers, polyetheretherketone fibers, silica-modified viscose fibers, polyetherimide fibers, polycarbonate fibers, polybutylene terephthalate fibers, polyethylene terephthalate fibers and acrylic fibers, and blends thereof. 12. The sound absorption facing of claim 1, further comprising an adhesive. 13. A sound absorption laminate comprising the sound absorption facing of claim 1 and at least one additional layer laminated thereto. 14. The sound absorption laminate of claim 13, wherein the at least one additional layer comprises fiberglass batting, one or more resinated fiberglass panels, rock wool, plastic foam, urethane foam, shoddy pad from waste fiber, polyester batting, resinated fiberfill, aerogel, closed cell foam and/or reticulated foam. 15. The sound absorption laminate according to claim 13, wherein the at least one additional layer is a fabric layer. 16. A sound absorption laminate, comprising: first and second acoustically tunable sound absorption facings, each comprising a cellulosic layer and a nonwoven fiber batt wherein the cellulosic layer and the nonwoven fiber batt are entangled together; anda low density layer of material sandwiched between the first and second facings, wherein the low density layer of material comprises fiberglass batting, one or more resinated fiberglass panels, rock wool, plastic foam, urethane foam, shoddy pad from waste fiber, polyester batting, resinated fiberfill, aerogel, closed cell foam and/or reticulated foam. 17. An article, comprising: a) an acoustically tunable sound absorption facing comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer and the nonwoven fiber batt are entangled together;b) a finish and/or coating applied to the sound absorption facing; andc) a low density layer of material laminated to the sound absorption facing. 18. The article of claim 17, wherein the finish and/or coating imparts flame retardancy, adhesive properties, crock resistance, grab tensile, tear strength, color, microbial resistance, electrical conductivity, thermal conductivity, opacity, controllable modulus, water repellency, oil and grease repellency, corrosion resistance, and/or controllable surface texture to the sound absorption facing. 19. The article of claim 17, further comprising an adhesive. 20. The sound absorption facing of claim 3, having an acoustic impedance of at least about 400 Rayls and a basis weight of at least about 0.7 ounces per square yard. 21. The sound absorption facing of claim 20, further comprising a flame retardant. 22. The sound absorption facing of claim 20, further comprising a film-forming binder. 23. The sound absorption facing of claim 20, wherein the cellulosic layer and the nonwoven fiber batt are entangled via spunlacing. 24. The sound absorption facing of claim 20, wherein the sound attenuating properties of the sound absorption facing are modified by stretching, bulking and/or calendaring the sound absorption facing and/or by applying one or more finishes and/or coatings to the sound absorption facing. 25. The sound absorption facing of claim 20, wherein the nonwoven fiber batt comprises one or more fibers selected from the group consisting of polypropylene fibers, polyethylene fibers, polyethylene terephthalate fibers, polyester fibers, acetate fibers, nylon fibers, polylactic acid fibers, glass fibers, viscose fibers, aramid fibers, polybenzimidazole fibers, melamine fibers, polyetheretherketone fibers, silica-modified viscose fibers, polyetherimide fibers, polycarbonate fibers, polybutylene terephthalate fibers, polyethylene terephalate fibers and acrylic fibers, and blends thereof. 26. The sound absorption facing of claim 20, further comprising an adhesive. 27. A sound absorption laminate comprising the sound absorption facing of claim 20 and at least one additional layer. 28. The sound absorption laminate according to claim 27, wherein the at least one additional layer is a fabric layer. 29. An acoustically tunable sound absorption facing, comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer and the nonwoven fiber batt are entangled together,wherein the sound absorption facing further comprises a flame retardant, an oil repellant and/or a film-forming binder, andwherein the sound absorption facing has a basis weight of at least about 0.7 ounces per square yard. 30. The sound absorption facing of claim 29, wherein the cellulosic layer comprises about 20 to 60 percent by weight of the sound absorption facing and wherein the nonwoven batt comprises about 40 to 80 percent by weight of the sound absorption facing. 31. The sound absorption facing of claim 29, wherein cellulosic fibers comprise about 20 to 60 percent by weight of the sound absorption facing and wherein noncellulosic fibers comprise about 40 to 80 percent by weight of the sound absorption facing. 32. The sound absorption facing of claim 29, wherein the cellulosic layer is in the form of a web or sheet. 33. The sound absorption facing of claim 29, wherein the cellulosic layer comprises wood fibers, cotton fibers and/or viscose fibers. 34. The sound absorption facing of claim 29, wherein the cellulosic layer comprises one or more synthetic fibers. 35. The sound absorption facing of claim 29 having an acoustic impedance in the range of about 245 Rayls to about 2450 Rayls. 36. The sound absorption facing of claim 29, wherein the sound attenuating properties of the sound absorption facing are modified by one or more mechanical processes. 37. The sound absorption facing of claim 36, wherein the one or more mechanical processes is/are selected from the group consisting of stretching, bulking and/or calendaring. 38. A sound absorption laminate comprising the sound absorption facing of claim 29 and at least one additional layer. 39. An acoustically tunable sound absorption facing, comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer comprises about 20 to 60 percent by weight of the sound absorption facing,wherein the nonwoven batt comprises about 40 to 80 percent by weight of the sound absorption facing,wherein the cellulosic layer and the nonwoven fiber batt are entangled together,wherein the sound absorption facing further comprises a flame retardant and an oil repellant, andwherein the sound attenuating properties of the sound absorption facing are modified by one or more mechanical processes. 40. An acoustically tunable sound absorption facing, comprising a cellulosic layer and a nonwoven fiber batt, wherein the cellulosic layer comprises about 20 to 60 percent by weight of the sound absorption facing,wherein the nonwoven batt comprises about 40 to 80 percent by weight of the sound absorption facing,wherein the cellulosic layer and the nonwoven fiber batt are entangled together via spunlacing,wherein the sound absorption facing further comprises a flame retardant, andwherein the sound attenuating properties of the sound absorption facing are modified by one or more mechanical processes.