B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL containing cementitious material B28B; shaping of substances in a plastic state B29C; fibreboards made from fibrous suspensions D21J; drying F26B17/00This subclass does not cover treatment of compositions which are in a plastic state, or worked by the same type of process or apparatus as plastics, which is covered by subclass B29B or B29C.In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. B27N1/00 B27N1/00Pretreatment of moulding material B27N1/003for reducing formaldehyde gas emission B27N1/006for increasing resistance to swelling by humidity B27N1/02Mixing the material with binding agent mixing in general B01F B27N1/0209Methods, e.g. characterised by the composition of the agent B27N1/0218in rotating drums B27N1/0227using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer B27N1/0236with the stirrers rotating about an horizontal axis, e.g. in consecutive casings B27N1/0254 takes precedence B27N1/0245with a single stirrer shaft B27N1/0254with means for spraying the agent on the material before it is introduced in the mixer B27N1/0263by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles B27N1/0254 takes precedence B27N1/0272by bringing the material into contact with a rotating roll provided with a layer of binding agent B27N1/0281Combinations of dissimilar mixers B27N1/029Feeding; Proportioning; Controlling B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres B27N3/002characterised by the type of binder compositions of macromolecular compounds C08L B27N3/005and foam B27N3/007and at least partly composed of recycled material B27N3/02from particles B27N3/04from fibres B27N3/06Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation B27N3/08Moulding or pressing presses in general B30B B27N3/083Agents for facilitating separation of moulds from articles B27N3/086Presses with means for extracting or introducing gases or liquids in the mat B27N3/10Moulding of mats B27N3/12from fibres B27N3/14Distributing or orienting the particles or fibres B27N3/143Orienting the particles or fibres B27N3/146Controlling mat weight distribution B27N3/16Transporting the material from mat moulding stations to presses B27N3/22 takes precedenceApparatus specially adapted for transporting the material or component parts therefor, e.g. cauls transport devices in general B65G B27N3/18Auxiliary operations, e.g. preheating, humidifying, cutting-off B27N3/183Forming the mat-edges, e.g. by cutting B27N3/186Separating the cauls from the boards B27N3/20characterised by using platen-presses B27N3/203with heating or cooling means B27N3/206for continuous boards B27N3/22Charging or discharging B27N3/24characterised by using continuously acting presses having endless belts or chains moved within the compression zone B27N3/26characterised by using continuously acting presses having a heated press drum and an endless belt to compress the material between belt and drum B27N3/28characterised by using extrusion presses B27N5/00Manufacture of non-flat articles B27N5/02Hollow articles B27N7/00After-treatment, e.g. reducing swelling or shrinkage, surfacingProtecting the edges of boards against access of humidity B27N7/005Coating boards, e.g. with a finishing or decorating layer B27N9/00Arrangements for fireproofing fireproofing materials C09K21/00