A method of applying treatment chemicals to fiber-based planar products and products made using same

摘要

A method of applying a treatment composition containing at least one treatment chemical to a fiber-based planar product. The method includes the steps of: a) applying the treatment composition to one side of the planar product, and b) allowing the treatment composition to penetrate the planar product at least in part. The treatment composition is heated before and/or during step b). The penetration of the treatment composition is preferably promoted by applying a subatmospheric pressure at that side of the planar product not treated with the treatment composition. A device usable for this method and a planar fiber-based product, in particular tissue is obtained.