METHOD FOR PRODUCING YIELDABLE PAPER AND PLANT FOR IMPLEMENTING THE METHOD

摘要

A method for producing yieldable paper, characterised by comprising the following stages: (a) feeding a mix of vegetable fibres to a kneader member (1); (b) mixing the mix with water in the kneader; (c) beating (6) the fibres by rubbing, to obtain a pulp having a degree of beating of at least 30 ~SR; (d) transferring the beaten pulp into a flow chest (10); (e) feeding the beaten pulp from the flow chest onto a paper web formation cloth (12) with consequent reduction of the water percentage by gravity and vacuum; (f) pressing (14) said web, with consequent further reduction of its water content; (g) initial drying (16) of the preformed paper web to a substantially constant moisture content of between 15 % and 65 %; (h) compacting between pairs of rollers (17), of which one is of hard material comprising surface ribs and driven at greater speed, and the other is of soft material with a smooth surface and driven at lesser speed; (i) final drying (18) to a moisture content of between 15 % and 4 %, preferably 10 %-8 %; (j) glazing (39).