Patent ID: 9394637
Filing Date: 2016-07-19
CPC Classification: A61K,B08B,D04H,D10B

Claim Text:
1. A method for production of a nonwoven web, comprising: preparing a homogeneous dry mixture of defibrated natural cellulose fibers and staple fibers; passing the homogeneous dry mixture through a perforated cylinder onto a foraminous carrier to airform the mixture to obtain at least one homogeneous airlaid web; hydroentangling the airlaid web on the foraminous carrier to consolidate the web on at least one side; and drying the hydroentangled web to obtain the nonwoven web; wherein the airforming and hydroentangling is conducted in a continuous operation, a content of the natural cellulose fibers in the mixture of fibers is no less than 50% by weight and a content of the staple fibers is no more than 50% by weight, no binder, adhesive or thermal bonding fibers are utilized, a fiber length of the natural cellulose fibers is no more than 3.5 mm, a fiber length of the staple fibers is no less than 8.0 mm, a basis weight of the nonwoven web is from 20 g/m a thickness of the nonwoven web is from 0.25 mm to 2 mm.