ANTIODOR AND ANTIMICROBIAL LAYERS IN ABSORBENT MATERIALS
An AM/AV material, comprising a topsheet layer comprising fibers comprising a topsheet polymer composition, a backsheet layer comprising fibers comprising a backsheet polymer composition; and an absorbent core configured therebetween, wherein the fibers of at least one of the layers, e.g., the topsheet layer, comprise an AM/AV compound, and wherein the fibers of the topsheet layer demonstrate a rewet value less than 5 g after a first water application and/or a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
1 . An AM/AV material, comprising:
a topsheet layer comprising fibers comprising a topsheet polymer composition comprising a polymer and an AM/AV compound;
a backsheet layer comprising fibers comprising a backsheet polymer composition; and
an absorbent core configured therebetween;
wherein the fibers of the topsheet layer comprise a polymer and an AM/AV compound, and
wherein the fibers of the topsheet layer demonstrate a rewet value less than 5 g after a first water application and a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
2 . The material of claim 1 , wherein the topsheet polymer composition comprises a polyamide and a zinc compound.
3 . The material of claim 1 , wherein polymer compositions comprise a polymer comprising a thermoplastic polymer, polyester, nylon, rayon, polyamide, polyamide, poly olefin, polyolefin terephthalate, polyolefin terephthalate glycol, co-PET, or polylactic acid, or combinations thereof.
4 . The material of claim 1 , wherein the fibers in each of the layers have an average fiber diameter from 1 micron to 50 microns.
5 . The material of claim 1 , wherein the topsheet has a basis weight ranging from 5 gsm to 40 gsm.
6 . The material of claim 1 , wherein the topsheet layer is meltblown, spunbond, electrospun, spunlace, or flashspun.
7 . The material of claim 1 , wherein the topsheet layer has a thickness ranging from 25 microns to 500 microns and/or the backsheet layer has a thickness ranging from 25 microns to 500 microns.
8 . The material of claim 1 , wherein the fibers of the topsheet layer demonstrate a Klebsiella pneumoniae efficacy log reduction greater than 2.4, as measured in accordance with ISO 20743 :2013.
9 . The material of claim 1 , wherein the topsheet layer demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018).
10 . The material of claim 1 , wherein one of more of the polymer compositions has a hygroscopy absorbance of greater than 1.5 wt. % water, based on the total weight of the polymer.
11 . The material of claim 1 , further comprising a pad layer comprising a pad polymer composition and configured between the topsheet layer and the absorbent core and/or an acquisition distribution layer comprising an ADL polymer composition and configured between the topsheet layer and the absorbent core.
12 . The material of claim 1 , further comprising an embossed layer comprising a embossed polymer composition and configured between the absorbent core and the backsheet layer.
13 . The material of claim 1 , wherein the absorbent core comprises absorbent material and an AM/AV powder composition comprises an AM/AV compound and a polymer.
14 . An AM/AV material, comprising:
a topsheet layer comprising fibers comprising a topsheet polymer composition;
a backsheet layer comprising fibers comprising a backsheet polymer composition; and
an absorbent core configured therebetween; and
an AM/AV powder composition,
wherein the AM/AV material demonstrates a rewet value less than 5 g after a first water application and a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
15 . The material of claim 14 , wherein the AM/AV powder composition comprises an AM/AV compound and a polymer.
16 . The material of claim 14 , wherein the AM/AV powder composition is dispersed in the absorbent core and/or in one of the layers.
17 . The material of claim 14 , wherein polymer compositions comprise a polymer comprising a thermoplastic polymer, polyester, nylon, rayon, polyamide, polyamide, poly olefin, polyolefin terephthalate, polyolefin terephthalate glycol, co-PET, or polylactic acid, or combinations thereof.
18 . An AM/AV material, comprising:
a topsheet layer comprising fibers comprising a topsheet polymer composition;
a backsheet layer comprising fibers comprising a backsheet polymer composition; and
an absorbent core configured therebetween;
wherein the fibers of at least one of the layers comprise an AM/AV compound, and
wherein the fibers of at least one of the layers demonstrate a rewet value less than 5 g after a first water application and a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
19 . A process for making an AM/AV material, comprising the steps of:
providing a topsheet layer comprising fibers comprising a topsheet polymer composition;
a backsheet layer comprising fibers comprising a backsheet polymer composition; and an absorbent core; wherein the fibers of at least one of the layers comprise an AM/AV compound configuring the absorbent core between the topsheet layer and the backsheet layer;
wherein the fibers of at least one of the layers demonstrate a rewet value less than 5 g after a first water application and a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
20 . The process of claim 19 , wherein none of the layers are treated to improve initial hygroscopicity and/or hydrophilicity.