WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B27N　MANUFACTURE 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 F26B 17/00)

B27N 1/00 Pretreatment of moulding material

B27N 1/003 ・{for reducing formaldehyde gas emission}

B27N 1/006 ・{for increasing resistance to swelling by humidity}

B27N 1/02 ・Mixing the material with binding agent (mixing in general B01F)

B27N 1/0209 ・・[Methods, e.g. characterised by the composition of the agent]

B27N 1/0218 ・・{in rotating drums}

B27N 1/0227 ・・{using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer}

B27N 1/0236 ・・・{with the stirrers rotating about an horizontal axis, e.g. in consecutive casings (B27N 1/0254 takes precedence)}

B27N 1/0245 ・・・・{with a single stirrer shaft}

B27N 1/0254 ・・・{with means for spraying the agent on the material before it is introduced in the mixer}

B27N 1/0263 ・・{by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles (B27N 1/0254 takes precedence)}

B27N 1/0272 ・・{by bringing the material into contact with a rotating roll provided with a layer of binding agent}

B27N 1/0281 ・・{Combinations of dissimilar mixers}

B27N 1/029 ・・{Feeding; Proportioning; Controlling}

B27N 3/00 Manufacture of substantially flat articles, e.g. boards, from particles or fibres

B27N 3/002 ・{characterised by the type of binder (compositions of macromolecular compounds C08L)}

B27N 3/005 ・{and foam}

B27N 3/007 ・{and at least partly composed of recycled material}

B27N 3/02 ・from particles

B27N 3/04 ・from fibres

B27N 3/06 ・Making 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

B27N 3/08 ・Moulding or pressing (presses in general B30B)

B27N 3/083 ・・{Agents for facilitating separation of moulds from articles}

B27N 3/086 ・・{Presses with means for extracting or introducing gases or liquids in the mat}

B27N 3/10 ・・Moulding of mats

B27N 3/12 ・・・from fibres

B27N 3/14 ・・・Distributing or orienting the particles or fibres

B27N 3/143 ・・・・{Orienting the particles or fibres}

B27N 3/146 ・・・・{Controlling mat weight distribution}

B27N 3/16 ・・Transporting the material from mat moulding stations to presses (B27N 3/22 takes precedence); Apparatus specially adapted for transporting the material or component parts therefor, e.g. cauls (transport devices in general B65G)

B27N 3/18 ・・Auxiliary operations, e.g. preheating, humidifying, cutting-off

B27N 3/183 ・・・{Forming the mat-edges, e.g. by cutting}

B27N 3/186 ・・・{Separating the cauls from the boards}

B27N 3/20 ・・characterised by using platen-presses

B27N 3/203 ・・・{with heating or cooling means}

B27N 3/206 ・・・{for continuous boards}

B27N 3/22 ・・・Charging or discharging

B27N 3/24 ・・characterised by using continuously acting presses having endless belts or chains moved within the compression zone

B27N 3/26 ・・characterised by using continuously acting presses having a heated press drum and an endless belt to compress the material between belt and drum

B27N 3/28 ・・characterised by using extrusion presses

B27N 5/00 Manufacture of non-flat articles

B27N 5/02 ・Hollow articles

B27N 7/00 After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity

B27N 7/005 ・{Coating boards, e.g. with a finishing or decorating layer}

B27N 9/00 Arrangements for fireproofing (fireproofing materials C09K 21/00)