HYDROENTANGLED AIRLAID WEB AND PRODUCTS OBTAINED THEREFROM

摘要

A water disposable nonwoven web having good MD and CD strength is provided. The nonwoven web is obtained by hydroentangling an airlaid web of no less than 50% by weight of natural cellulose fibers having a fiber length of no more than 3.5 mm and no more than 50% by weight staple fibers having a fiber length of no less than 8.0 mm. The nonwoven web contains no adhesive, binder or thermal bonding fibers. Products containing the disposable nonwoven web meet municipal guidelines for flushability.

主权项

1. A nonwoven web, comprising:
no less than 50% by weight of defibrated natural cellulose fiber; and no more than 50% by weight of staple fiber; wherein the nonwoven web comprises no binder, adhesive or thermal bonding fiber, a fiber length of the defrbrated 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/m2 to 100 g/m2, and a thickness of the nonwoven web is from 0.25 mm to 2 mm, and wherein the nonwoven web is obtained by a process comprising: preparing a homogeneous dry mixture of the defibrated natural cellulose fibers and the 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 are conducted in a continuous operation.