Production of Nonwoven Fabrics by Impregnating Fibrous Canvases with a Binder

Аннотация

In this article we are talking about the physico-chemical technology of production of nonwovens, which is
based on the effect of binders on fibrous material and strengthening it during subsequent drying and heat treatment.
According to physico-chemical technology, non-woven materials are produced by impregnation, molding from melt or
polymer solutions, by hot pressing, by papermaking. The main technological processes for the production of non-woven
glued materials by the impregnation method are impregnation, drying and heat treatment. An important process here is
the introduction of a liquid binder into the fibrous canvas, i.e. impregnation. The liquid binder is distributed in the canvas
over its entire thickness or in its surface layers. The binder not only binds the fibers together, but also affects the final
properties of the non-woven material, such as strength, rigidity, softness, water resistance, breathability and flammability.
The choice of binder also affects the ability of the fabric to be further processed after its useful life. The impregnation
method is characterized by the simplicity of the technology and the equipment used in the textile industry.