BICOMPONENT FABRICS
An AM/AV fabric comprising base fibers comprising a base polymer composition and AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound. The base fibers and the AM/AV fibers are intermingled with one another; and the fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.
1 . An AM/AV fabric, comprising:
base fibers comprising a base polymer composition; and
AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound;
wherein base fibers and the AM/AV fibers are intermingled with one another; and
wherein the fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.
2 . The fabric of claim 1 , wherein the base fibers have a base fiber charge.
3 . The fabric of claim 1 , wherein the AM/AV fibers have an AM/AV fiber charge.
4 . The fabric of claim 1 , wherein the AM/AV fibers have no charge.
5 . The fabric of claim 3 , wherein the base fiber charge is less than the AM/AV fiber charge.
6 . The fabric of claim 1 , wherein the fabric, comprises greater than 25 wt% base fibers.
7 . The fabric of claim 1 , wherein the base polymer comprises polypropylene and the AM/AV polymer comprises polyamide.
8 . The fabric of claim 1 , wherein the AM/AV compound comprises zinc or copper or a combination thereof.
9 . The fabric of claim 1 , wherein the AM/AV compound comprises a zinc compound.
10 . The fabric of claim 1 , wherein the AM/AV fibers comprise a supplemental polymer different from the AM/AV polymer.
11 . The fabric of claim 1 , wherein the base polymer composition or the AM/AV polymer composition comprises a charge agent.
12 . The fabric of claim 1 , wherein the fabric demonstrates an ATI filtration efficiency greater than 20% at an 85 1pm flow rate.
13 . The fabric of claim 1 , wherein the fabric demonstrates a pressure drop greater than 1 mm H 2 O/cm 2 .
14 . The fabric of claim 1 , wherein the fabric demonstrates an air permeability greater than 20 cfm/ft 2 at a mean flow pore size of at least 7 microns.
15 . A process for producing an AM/AV fabric, the process comprising:
intermingling AM/AV fibers comprising an AM/AV polymer composition and base fibers comprising a base polymer composition and to form a fabric web;
charging the fabric web to form the AM/AV fabric;
wherein the AM/AV fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.
16 . The process of claim 15 , further comprising:
blowing the AM/AV polymer composition to form the AM/AV fibers; and
blowing the base polymer composition to form the base fibers;
wherein the blowing of the fibers effectuates the intermingling.
17 . The process of claim 15 , wherein the base fibers have a base fiber charge and the AM/AV fibers have an AM/AV fiber charge, and wherein the base fiber charge is less than the AM/AV fiber charge.
18 . The process of claim 15 , wherein the AM/AV fibers comprise a supplemental polymer different from the AM/AV polymer.
19 . The process of claim 15 , wherein the base polymer composition or the AM/AV polymer composition comprises a charge agent.
20 . An AM/AV fabric, comprising:
base fibers comprising a base polymer composition comprising polypropylene; and
AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer comprising polyamide and an AM/AV compound comprising zinc or copper or a combination thereof and an optional supplemental polymer comprising an olefin polymer;
wherein base fibers and the AM/AV fibers are intermingled with one another; and
wherein the fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.