Two-sided nonwoven fabric
A nonwoven fabric comprises a first layer formed of staple fibers having a smooth outer surface, a second layer formed of staple fibers having an outer surface with a roughened texture and a third, spunbond layer sandwiched between the first and second layers. A binder material is applied to the second layer which substantially covers its textured surface and is effective to resist deformation under the application of pressure even in the presence of liquid.
1. A nonwoven fabric, comprising:
a first layer formed solely of synthetic staple fibers, said first layer having an inner surface and a smooth outer surface;
a second layer formed solely of synthetic staple fibers, said second layer having an inner surface and an outer surface with a textured pattern;
a third layer formed of spunbond filaments which is located between said inner surface of said first layer and said inner surface of said second layer, said staple fibers of said first and second layers being hydroentangled with said spunbond filaments of said third layer to connect said layers together;
a binder material applied over said textured pattern of said outer surface of said second layer, said binder material being effective to resist deformation of said textured pattern.
2. The nonwoven fabric of claim 1 in which said synthetic staple fibers forming said first layer are selected from the group consisting of polyethylene, polypropylene, rayon, polyester, acrylic, polyolefins, nylon and bicomponent materials.
3. The laminated nonwoven fabric of claim 1 in which said synthetic staple fibers forming said second layer are selected from the group consisting of polyethylene, polypropylene, rayon, polyester, acrylic, polyolefins, nylon and bicomponent materials.
4. The nonwoven fabric of claim 1 in which said spunbond filaments of said third layer are formed of thermoplastic materials selected from the group consisting of vinyls, polyethylenes, polypropylenes and acrylics.
5. The nonwoven fabric of claim 1 in which said binder material is selected from the group of ethylene vinyl acetate and acrylic.
6. The nonwoven fabric of claim 1 in which said first layer has a basis weight in the range of about 15 to 45 grams per square meter.
7. The nonwoven fabric of claim 1 in which said second layer has a basis weight in the range of about 45 to 180 grams per square meter.
8. The nonwoven fabric of claim 1 in which said third layer has a basis weight in the range of about 15 to 45 grams per square meter.
9. The nonwoven fabric of claim 1 in which said synthetic staple fibers of said first layer are present in an amount in the range of about 8% to 33% by weight.
10. The nonwoven fabric of claim 1 in which said spunbond filaments of said third layer are present in an amount in the range of about 8% to 33% by weight.
11. The nonwoven fabric of claim 1 in which said synthetic staple fibers of said second layer are present in an amount in the range of about 33% to 83% by weight.
12. The nonwoven fabric of claim 1 in which said binder material is present in an amount in the range of about 0.1% to 25% by weight.
13. A method of manufacturing a nonwoven fabric, comprising:
(a) providing a first web formed solely of synthetic staple fibers having an inner surface and a smooth outer surface;
(b) providing a second web formed solely of synthetic staple fibers having an inner surface and an outer surface;
(c) providing a third web of spunbond filaments;
(d) locating said third web between said inner surfaces of said first and second webs;
(e) hydroentangling said staple fibers of said first and second webs with said spunbond filaments of said third web to connect said webs together;
(f) forming a textured pattern on said outer surface of said second web; and (g) applying a binder material over said textured pattern on said outer surface of said second web.
14. The method of claim 13 in which step (f) comprises employing a hydroentangling sleeve to form said textured pattern on said outer surface of said second web.
15. The method of claim 13 in which step (g) comprises applying ethylene vinyl acetate or acrylic over said textured pattern on said outer surface of said second web.
16. A nonwoven fabric, comprising:
a first layer formed solely of synthetic staple fibers, said first layer having an inner surface, a smooth outer surface and a first basis weight;
a second layer formed solely of synthetic staple fibers, said second layer having an inner surface, an outer surface with a textured pattern and a second basis weight which is greater than said first basis weight;
a third layer formed of spunbond filaments which is located between said inner surface of said first layer and said inner surface of said second layer, said staple fibers of said first and second layers being hydroentangled with said spunbond filaments of said third layer to connect said layers together;
a binder material applied over said textured pattern on said outer surface of said second layer, said binder material being effective to resist deformation of said textured pattern.