still for framstellning of a non vevd fiberbana impregnated with an aqueous uppskummad bindemedelskomposition, according to vatmetoden at a paper mill

摘要

Matted fibre webs are produced by impregnating them whilst they are conveyed by a porous belt over a suction box with an aq. dispersion of foamed bonding agent having a bulk density of 50 g per litre. The agent is applied to a coating cylinder which is spaced above the web by a distance greater than the thickness of the layer of agent which is transferred to the web by the suction in the box. Impregnated web is dried. Matted fibre webs are produced from a mixt. of polyester and rayon staple fibres having a length of from 4 to 45mm. Feel of web is softer than the "paper feel" obtained by previous methods.