Nonwoven fabrics including recycled polypropylene

Patent metadata

Field	Value
Publication number	US-12546039-B2
Application number	US-202218070988-A
Country	US
Kind code	B2
Filing date	Nov 29, 2022
Priority date	Nov 30, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

Nonwoven fabrics are provided that include a first meltblown layer, in which the first meltblown layer comprises a first polymeric material including (i) a first polymer component and (ii) optionally one or more first additives. The first polymer component comprises a first recycled-polypropylene (rPP).

First claim

That which is claimed:

1 . A nonwoven fabric, comprising: a first nonwoven layer comprising a first meltblown layer comprising a first plurality of meltblown fibers comprising meltblown shot, meltblown ropes, or both, wherein the meltblown shot, the meltblown rope, or both is randomly and irregularly distributed throughout the first meltblown layer, on a first outer surface of the first meltblown layer, or both, and the first meltblown layer comprises a first polymeric material including (i) a first polymer component and (ii) optionally one or more first additives, wherein the first polymer component comprises a first recycled-polypropylene (rPP).

2 . The nonwoven fabric of claim 1 , wherein the first polymer component comprises from 75% to 100% by weight of the first rPP.

3 . The nonwoven fabric of claim 1 , wherein the first meltblown layer comprises an average shot height, rope height, or both from about 0.1 mm to about 1.0 mm.

4 . The nonwoven fabric of claim 1 , wherein the meltblown shot comprises irregularly shaped fibers, wads, or particles.

5 . The nonwoven fabric of claim 1 , wherein the meltblown rope comprise bundles of agglomerated meltblown fibers having a variable cross-section along a length of the meltblown rope.

6 . The nonwoven fabric of claim 1 , wherein the first polymer component has a first melt flow rate (MFR) from about of from about 10 to about 300 g/10 min as determined by ASTM D1238 (230 C°/2.16 kg).

7 . The nonwoven fabric of claim 1 , wherein the first polymeric material includes the one or more first additives, the one or more first additives comprising a first viscosity reducing agent.

8 . The nonwoven fabric of claim 7 , wherein the first polymeric material has a second MFR from about 100 to about 2500 g/10 min as determined by ASTM D1238 (230 C°/2.16 kg).

9 . The nonwoven fabric of claim 1 , further comprising a hydrophilic finish disposed on an outer surface of the first meltblown layer, the first polymeric material further comprises a first hydrophilic melt additive, or both.

10 . The nonwoven fabric of claim 1 , further comprising a second nonwoven layer bonded to the first nonwoven layer.

11 . The nonwoven fabric of claim 10 , wherein the second nonwoven layer comprises a spunbond layer, a meltblown layer, a bonded carded web of staple fibers, a mechanically consolidated layer, or any combination thereof.

12 . A method of making a nonwoven fabric, comprising:
(a) forming a first polymeric melt comprising (i) a first polymer component and (ii) optionally one or more first additives, wherein the first polymer component comprises a first recycled-polypropylene (rPP); (b) producing a first nonwoven layer comprising a first meltblown layer, the first meltblown layer comprising a plurality of first meltblown fibers comprising meltblown shot, meltblown ropes, or both; and (c) consolidating the plurality of first meltblown fibers to form the nonwoven fabric, wherein the meltblown shot, the meltblown rope, or both is randomly and irregularly distributed throughout the first meltblown layer, on a first outer surface of the first meltblown layer, or both.

13 . An article, comprising: a plurality of interconnected individual wipes comprising a nonwoven fabric according to claim 1 , wherein the plurality of interconnected individual wipes are defined by a plurality of perforations.

14 . An article, comprising: a filter media comprising a nonwoven fabric according to claim 1 , wherein the nonwoven fabric is housed within a frame.

15 . An article, comprising: a facemask comprising a nonwoven fabric according to claim 1 , and at least one strap portion.

16 . The nonwoven fabric of claim 1 , wherein the meltblown shot, meltblown ropes, or both define an abrasive feature for a first outer surface of the nonwoven fabric.

17 . The method of claim 12 , wherein the first polymer component has a first melt flow rate (MFR) from about of from about 10 to about 300 g/10 min as determined by ASTM D1238 (230 C°/2.16 kg).

18 . The method of claim 12 , wherein the first polymeric material includes the one or more first additives, the one or more first additives comprising a first viscosity reducing agent.

19 . The method of claim 18 , wherein the first polymeric material has a second MFR from about 100 to about 2500 g/10 min as determined by ASTM D1238 (230 C°/2.16 kg).

20 . The method of claim 12 , further comprising a step of forming or providing a second nonwoven layer, wherein the second nonwoven layer comprises a spunbond layer, a meltblown layer, a bonded carded web of staple fibers, a mechanically consolidated layer, or any combination thereof, and bonding the first nonwoven layer and the second nonwoven layer together to form a multilayer nonwoven fabric.

Assignees

• Berry Global Inc
• Magnera Corp

Inventors

• Malocho Miriam
• Harz Patrick

Classifications

• D10B2509/00

  Medical; Hygiene · CPC title

• D10B2505/04

  Filters · CPC title

• D10B2503/00

  Domestic or personal · CPC title

• D10B2321/022

  polypropylene · CPC title

• D04H1/732

  by fluid current, e.g. air-lay · CPC title