A method and apparatus for screening and drying of loose material in front of a spreading machine in the course of the production of boards

摘要

The present invention relates to a method and apparatus for screening and drying of loose material (1) in front of a spreading machine in the course of the production of boards, wherein the loose material (1) according to delivery or manufacture of a drying and optional gluing is subjected to, and finally, in a spreading station on a forming belt to a mat is covered and in the further course of by means of pressure and heat is pressed to a material plate. The invention for the method consists in that the spreadable material (1) still in the moist state with a screening device (2) in at least two different fractions of the spreadable material (13, 24) is screened, at least one of the sieved fractions at least one dryer (5, 8) is supplied, the supply of the loose material (13, 14) to the dryer (5, 8) by means of a control device (10) controlled conveying device (4, 7) is carried out and the control device (10) by means of a measurement of the mass and / or of the weight per unit area of the loose material (13, 14) by means of a measuring device (11) a uniform predetermined weight - and / or volume entry in the or the drier (5, 8) ensures.