A method for the production of a multi-layer packaging paper, paper machine for producing a multi-layer packaging paper and a multilayer packaging paper prepared according to this method

摘要

The present invention relates to a process for the production of a multi-layer packaging paper, with at least three layers, with a weight per unit area in the range from 80 to 250 g / m² and at least one liner layer, an even layer and a method comprising the steps of the dorsal position:– Providing one or more cover layers of material composition (s), already layer material composition (s) and the back of layers of material composition (s) and editing of one or more cover layers of fiber material suspension (s), already layer fiber material suspension (s) and the back of layers of fiber material suspension (s);– Providing in each case of a headbox and in each case of a screening fabric belonging to each individual of the suspensions;– Transverse distribution and application of the one or more suspensions;– Dewatering of the suspensions through the associated sieve cloth and the web forming one or more cover layers web (s), already layer web (s) and the back layers web (s);– successive vergautschen of the individual tracks formed paper web to form a pack;– Mechanical dewatering, drying, smooth and rolling up of the packaging paper web;in the case of the successive vergautschen in step f) the lowermost web than the paper screen side one or a of the plurality of cover layer (n), and on the dewatering side in relation to the packaging paper web is arranged.