US 11,718,962 B2
Nonwoven web composition, method to prepare the composition and articles thereof
Geoff Collins, Basel (CH); and Santosh Chavan, Basel (CH)
Assigned to Jacob Holm & Sons AG, Basel (CH)
Filed by Jacob Holm & Sons AG, Basel (CH)
Filed on Jan. 23, 2020, as Appl. No. 16/750,433.
Prior Publication US 2021/0230808 A1, Jul. 29, 2021
Int. Cl. D21H 27/42 (2006.01); D21H 11/12 (2006.01); D21H 13/08 (2006.01); D21H 13/14 (2006.01); D21H 13/24 (2006.01); D21H 13/26 (2006.01); D21H 13/34 (2006.01); D21H 15/10 (2006.01)
CPC D21H 27/42 (2013.01) [D21H 11/12 (2013.01); D21H 13/08 (2013.01); D21H 13/14 (2013.01); D21H 13/24 (2013.01); D21H 13/26 (2013.01); D21H 13/34 (2013.01); D21H 15/10 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A nonwoven web, comprising:
at least one first homogeneous layer consisting of a blend of a staple fiber and at least two fibers selected from defibrated natural plant based fibers and individualized natural plant based fibers;
wherein
the at least one homogeneous layer comprises no binder, adhesive or thermal bonding fiber,
a basis weight of the at least one homogeneous layer is from 20 g/m2 to 100 g/m2,
a fineness of the staple fiber is from 2.0 denier to 10.0 denier,
wherein
the individualized natural plant based fibers are fibers selected from the group consisting of a flax fiber, a hemp fiber, a jute fiber, a ramie fiber, a nettle fiber, a Spanish broom fiber and a kenaf plant fiber which have been individualized to single fibers by mechanical, chemical or enzymatic treatment of the bast fibers,
when a weighted average fiber length of the blend of fibers is greater than about 4.0 mm, the nonwoven web is a non-dispersible product which does not meet the requirement for dispersibility in accordance with INDA/EDANA GD4, and
when a weighted average fiber length of the blend of fibers is less than about 4.0 mm, the nonwoven web is a dispersible product as defined in accordance with INDA/EDANA GD4.