Claims
- 1. A spun nonwoven fabric, comprising:monofilaments made of polyethylene terephthalate; bicomponent filaments made of polyethylene terephthalate and a polymeric binding component, the bicomponent filaments having at least two outward-facing segments of the binding component; wherein the bicomponent filaments, taken over cross sectional planes of the spun nonwoven fabric, are present in different weight proportions having a range from approximately 1% by weight to 100% by weight; and wherein the cross sectional planes, which have different proportions of bicomponent filaments, transition into one another without detectable phase boundaries.
- 2. The spun nonwoven fabric according to claim 1, further comprising: a first outward facing surface and a second outward-facing surface, the first outward-facing surface having a higher proportion of bicomponent filaments and being harder and more heat-bondable than the second outward-facing surface, which, having a lower proportion of bicomponent filaments, is softer and less heat-bondable.
- 3. The spun nonwoven fabric according to claim 1, further comprising: a first outward facing surface, a second outward-facing surface, and an interior disposed between the first and second outward facing surfaces;wherein the first and second outward facing surfaces have a lower proportion of bicomponent filaments than the interior, the interior having a harder configuration and a greater proportion of bicomponent filaments than the first and second outward-facing surfaces.
- 4. The spun nonwoven fabric according to claim 1, further comprising: a first outward facing surface, a second outward-facing surface, and an interior disposed between the first and the second outward facing surfaces;the first and second outward-facing surfaces having a higher proportion of bicomponent filaments, and being harder than the interior, which has a lower proportion of bicomponent filaments and is softer in configuration than the first and second outward-facing surfaces.
Priority Claims (1)
Number |
Date |
Country |
Kind |
196 30 523 |
Jul 1996 |
DE |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a division of U.S. Ser. No. 08/902,446, filed Jul. 29, 1997 now U.S. Pat. No. 6,053,719.
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Number |
Name |
Date |
Kind |
4555430 |
Mays |
Nov 1985 |
|
5660910 |
Hoyt et al. |
Aug 1997 |
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Foreign Referenced Citations (1)
Number |
Date |
Country |
435 28 61 |
Dec 1992 |
JP |