foerbaettrat foerfarande och anordning foer framstaellning av ark lively shall har stor haollfasthet mot abresion och daermed framstaellda ark

摘要

Surface sheets (230) impregnated with thermosetting resin and including a layer of abrasion-resistant particles are produced by the disclosed process. The process includes a method of applying the abrasion-resistant particles by spraying a slurry of such particles onto the surface of a web (158) by means of a rotary head (138) and a plurality of spray pistols (136). The step of spraying the slurry onto the surface of the web occurs after a first impregnation and may be followed by a second resin coating step.