US 11,085,151 B2 · Method of producing a fibrous web

Abstract

A method of producing a fibrous web, according to which method a fibrous web is formed of foamed fibre dispersion, by using foam forming. According to the present invention, the foamed fibre dispersion comprises recycled textile fibres and possibly natural fibres or synthetic fibres, or a mixture thereof, in which case, of the fibres in the fibre layer, at least 30% % by weight, in particular at least 50% by weight, is sourced from recycled textile fibres. The present invention generates a product with which it is possible to replace, for example, plastic in bag and package applications. The present product is also suitable, for example, for various textile and furniture applications.

Claims21

Dependent claims

A method of producing fibrous web, comprising:

forming a fibrous web from a foamed fibre dispersion by using foam forming, wherein
the foamed fibre dispersion comprises recycled textile fibres and optionally fibres selected from the group consisting of natural fibres, synthetic fibres and a mixture thereof, at least 50% by weight of the fibres in the fibre web being sourced from the recycled textile fibres;
and
applying a binder onto the foam-formed fibrous web in an amount effective to provide the foam-formed fibrous web, upon drying, with a tensile strength of the more than 1 kN/m, measured crosswise to the machine direction, and with an elongation of more than 3% measured in the machine direction.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/304,181Filed 23 May 2017

Priority

FI 2016542923 May 2016

Published

US 2020/0283958 A110 Sep 2020

Granted

10 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

D21H 17/01
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution: waste…
C08J 9/236
Forming foamed products: using binding agents
D21H 11/12
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only: pulp from non-woody plants or crops, e.g. cotton, flax,…
D21H 13/02
Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material: synthetic cellulose fibres

Method of producing a fibrous web

Life of this patent

Method of producing a fibrous web

Life of this patent

Abstract

Claims21