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US 11,821,121 B2Granted
Biopolymer-containing nonwoven fabric
AssigneeBerry Global, Inc.
InventorsRalph A. Moody, III, Steven Brian Burgess
Life of this patent
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Abstract
Nonwoven fabrics including a first spunmelt through-air-bonded (TAB) nonwoven layer comprising a first plurality of spunmelt fibers, in which the first plurality of spunmelt fibers comprise a biopolymer. The first plurality of spunmelt fibers may be physically entangled with cellulosic fibers, such by hydroentangling. Methods of forming a nonwoven fabric including a first spunmelt TAB nonwoven layer are also provided.
Claims16
A nonwoven fabric, comprising:
- (i) at least a first spunmelt through-air-bonded (TAB) nonwoven layer comprising a first plurality of spunmelt fibers;
- wherein (a) the first plurality of spunmelt fibers comprise continuous multi-component fibers comprising a first component including a first biopolymer composition and a second component including a second biopolymer composition, (b) the first biopolymer composition has a first melting temperature and a first melt index and the second biopolymer composition has a second melting temperature and a second melt index, (c) the first melting temperature is larger than the second melting temperature wherein a difference between the first melting temperature and the second melting temperature is from 5 to 15° C. and the second melt index is from 3 to 30 g/10 min smaller than the first melt index at 210° C. as determined according to ASTM D1238, and (d) the first spunmelt TAB nonwoven layer further comprises a first plurality of discrete first bond sites, the first plurality of discrete first bond sites comprise thermal bonds;
- and
- (ii) a plurality of cellulosic fibers physically entangled with the first plurality of spunmelt fibers;
- and
- wherein the plurality of cellulosic fibers comprise from 40 to 90% by weight of the nonwoven fabric.
3 more elements
Dependencies are inferred from the claim text.