A nonwoven composite has a first surface, a second surface, and a thickness extending between the first and second surfaces. The nonwoven composite comprises a plurality of natural fibers, a plurality of binder fibers, and a VOC-absorbing material. The binder fibers are bonded to or interlocked with
A nonwoven composite has a first surface, a second surface, and a thickness extending between the first and second surfaces. The nonwoven composite comprises a plurality of natural fibers, a plurality of binder fibers, and a VOC-absorbing material. The binder fibers are bonded to or interlocked with the natural fibers. The VOC-absorbing material is dispersed within the nonwoven composite in such a manner that the density of the VOC-absorbing material in the nonwoven composite is greatest adjacent to the second surface of the nonwoven composite. A method for producing a nonwoven composite is also described.
대표청구항▼
What is claimed is: 1. A nonwoven composite having a first surface and a second surface, the nonwoven composite comprising: (a) a plurality of bast fibers, (b) a plurality of binder fibers, the plurality of binder fibers comprising a plurality of first thermoplastic binder fibers and a plurality of
What is claimed is: 1. A nonwoven composite having a first surface and a second surface, the nonwoven composite comprising: (a) a plurality of bast fibers, (b) a plurality of binder fibers, the plurality of binder fibers comprising a plurality of first thermoplastic binder fibers and a plurality of second thermoplastic binder fibers, wherein the first binder fibers have a first linear density, the second binder fibers have a second linear density, and the second linear density is greater than the first linear density, and wherein the binder fibers being bonded to or interlocked with the bast fibers, and (c) a thermoplastic film disposed on at least one of the first and second surfaces of the nonwoven composite, the thermoplastic film comprising a volatile organic compound absorbing material dispersed therein, wherein the composite further comprises: (i) a first region comprising a plurality of first thermoplastic binder fibers and a plurality of bast fibers; (ii) a second region disposed above the first region with respect to the thickness of the composite, the second region comprising a plurality of second thermoplastic binder fibers, and a plurality of bast fibers, at least a portion of the second region defining the second surface of the nonwoven composite; and (iii) a first transitional region disposed between the first region and the second region, the first transitional region comprising concentrations of the first binder fiber, the second binder fiber, and the bast fiber, the concentration of the first binder fiber in the first transitional region being greatest proximate to the first region and least proximate to the second region, and the concentration of the second binder fiber in the first transitional region being greatest proximate to the second region and least proximate to the first region. 2. The nonwoven composite of claim 1, wherein the volatile organic compound absorbing material is activated carbon. 3. The nonwoven composite of claim 1, wherein the bast fibers are selected from the group consisting of jute fibers, kenaf fibers, hemp fibers, flax fibers, ramie fibers, roselle fibers, and combinations thereof. 4. The nonwoven composite of claim 1, wherein the composite further comprises an antimicrobial agent dispersed within the nonwoven composite. 5. The nonwoven composite of claim 1, wherein the plurality of binder fibers further comprises a plurality of third thermoplastic binder fibers, and the composite comprises: (i) a first region comprising a plurality of first thermoplastic binder fibers and a plurality of bast fibers; (ii) a second region disposed above the first region with respect to the thickness of the composite, the second region comprising a plurality of second thermoplastic binder fibers, and a plurality of bast fibers; (iii) a first transitional region disposed between the first region and the second region, the first transitional region comprising concentrations of the first binder fiber, the second binder fiber, and the bast fiber, the concentration of the first binder fiber in the first transitional region being greatest proximate to the first region and least proximate to the second region, and the concentration of the second binder fiber in the first transitional region being greatest proximate to the second region and least proximate to the first region; (iv) a third region disposed above the second region with respect to the thickness of the composite, the third region comprising a plurality of third thermoplastic binder fibers and a plurality of bast fibers, at least a portion of the third region defining the second surface of the nonwoven composite; and (v) a second transitional region disposed between the second region and the third region, the second transitional region comprising concentrations of the second binder fiber, the bast fiber, and the third binder fiber, the concentration of the second binder fiber in the second transitional region being greatest proximate to the second region and least proximate to the third region, and the concentration of the third binder fiber in the second transitional region being greatest proximate to the third region and least proximate to the second region. 6. The nonwoven composite of claim 5, wherein the first binder fibers have a first linear density, the second binder fibers have a second linear density that is greater than the first linear density, and the third binder fibers have a third linear density that is greater than the first and second linear densities.
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