Pressure sensitive adhesive fibers with a reinforcing material
First Claim
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1. An adhesive nonwoven web comprising pressure sensitive adhesive fibers, wherein the pressure sensitive adhesive fibers comprise:
- a pressure sensitive adhesive component; and
an organic polymeric reinforcing material comprising a plurality of substantially continuous minimicrofibers having a diameter of no greater than about 10 microns within the pressure sensitive adhesive component;
wherein the pressure sensitive adhesive fibers comprise about 60 weight percent to about 95 weight percent of the pressure sensitive adhesive component and about 5 weight percent to about 40 weight percent of minimicrofibrous organic polymeric reinforcing material based on a total weight of the pressure sensitive adhesive fibers, and further wherein a nonwoven web comprising the pressure sensitive adhesive fibers and having a basis weight of about 55 g/m2 has a maximum load of at least about 30 g/cm, which is at least about 150% of the load at yield point, and an elongation at break of at least about 50%.
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Abstract
This invention is directed to a reinforced adhesive fiber that includes a pressure sensitive adhesive component and a reinforcing material within the pressure sensitive adhesive component.
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Citations
34 Claims
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1. An adhesive nonwoven web comprising pressure sensitive adhesive fibers, wherein the pressure sensitive adhesive fibers comprise:
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a pressure sensitive adhesive component; and an organic polymeric reinforcing material comprising a plurality of substantially continuous minimicrofibers having a diameter of no greater than about 10 microns within the pressure sensitive adhesive component; wherein the pressure sensitive adhesive fibers comprise about 60 weight percent to about 95 weight percent of the pressure sensitive adhesive component and about 5 weight percent to about 40 weight percent of minimicrofibrous organic polymeric reinforcing material based on a total weight of the pressure sensitive adhesive fibers, and further wherein a nonwoven web comprising the pressure sensitive adhesive fibers and having a basis weight of about 55 g/m2 has a maximum load of at least about 30 g/cm, which is at least about 150% of the load at yield point, and an elongation at break of at least about 50%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An adhesive nonwoven web comprising pressure sensitive adhesive fibers, wherein the pressure sensitive adhesive fibers comprise:
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a pressure sensitive adhesive component; and a reinforcing material comprising a metallocene-catalyzed polyolefin within the pressure sensitive adhesive component; wherein the reinforcing material comprises a plurality of substantially continuous minimicrofibers having a diameter of no greater than about 10 microns; wherein the pressure sensitive adhesive fibers comprise about 60 weight percent to about 95 weight percent of the pressure sensitive adhesive component and about 5 weight percent to about 40 weight percent of the reinforcing material based on a total weight of the pressure sensitive adhesive fibers, and further wherein a nonwoven web comprising the pressure sensitive adhesive fibers and having a basis weight of about 55 g/m2 has a maximum load of at least about 30 g/cm, which is at least about 150% of the load at yield point, and an elongation at break of at least about 50%. - View Dependent Claims (23, 24, 25, 26)
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27. An adhesive nonwoven web comprising pressure sensitive adhesive fibers, wherein the pressure sensitive adhesive fibers comprise:
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a pressure sensitive adhesive component comprising a crosslinked acrylate copolymer, wherein the crosslinked acrylate copolymer comprises copolymerized monomers comprising at least one monoethylenically unsaturated alkyl (meth)acrylate monomer, at least one monoethylenically unsaturated free-radically copolymerizable reinforcing monomer having a homopolymer glass transition temperature higher than that of the alkyl (meth)acrylate monomer; and a reinforcing material comprising a metallocene-catalyzed polyolefin within the pressure sensitive adhesive component; wherein the reinforcing material comprises a plurality of substantially continuous minimicrofibers having a diameter of no greater than about 10 microns; wherein the pressure sensitive adhesive fibers comprise about 60 weight percent to about 95 weight percent of the pressure sensitive adhesive component and about 5 weight percent to about 40 weight percent of the reinforcing material based on a total weight of the pressure sensitive adhesive fibers, and further wherein a nonwoven web comprising the pressure sensitive adhesive fibers and having a basis weight of about 55 g/m2 has a maximum load of at least about 30 g/cm, which is at least about 150% of the load at yield point, and an elongation at break of at least about 50%. - View Dependent Claims (28, 29, 30)
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31. An adhesive nonwoven web comprising pressure sensitive adhesive fibers, wherein the pressure sensitive adhesive fibers comprise:
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a pressure sensitive adhesive component; and an organic polymeric reinforcing material within the pressure sensitive adhesive component, wherein the organic polymeric reinforcing material has a yield strength of no greater than about 20 MPa and an elongation at break of at least about 50%; wherein the reinforcing material comprises a plurality of substantially continuous minimicrofibers having a diameter of no greater than about 10 microns; wherein the pressure sensitive adhesive fibers comprise about 60 weight percent to about 95 weight percent of the pressure sensitive adhesive component and about 5 weight percent to about 40 weight percent of the organic polymeric reinforcing material based on a total weight of the pressure sensitive adhesive fibers, and further wherein a nonwoven web comprising the pressure sensitive adhesive fibers and having a basis weight of about 55 g/m2 has a maximum load of at least about 30 g/cm, which is at least about 150% of the load at yield point, and an elongation at break of at least about 50%. - View Dependent Claims (32, 33, 34)
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Specification