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1.发明授权
公开(公告)号：US5188785A
公开(公告)日：1993-02-23
申请号：US668068
申请日：1991-03-12
CPC分类号： B01F3/0807 , B01F3/1271 , B01F5/0403 , B01F5/0405 , B01F5/0471 , B01F5/0619 , B27N1/02 , B27N9/00 , Y10S428/921
摘要： A method and apparatus for producing a synthetic board from cellulosic or lignocellulosic fibers is disclosed wherein a standard isocyanate binder is emulsified and immediately applied to the fibers before consolidation into a finished board product. The apparatus includes an emulsification and application nozzle comprising a diluent inlet, a binder inlet, a mixing section for emulsifying the diluent and the binder, and a spray nozzle for applying the binder/diluent emulsion to the fibers. The method includes supplying a binder stream, supplying a diluent stream, emulsifying the binder with the diluent and immediately applying the emulsion to the fibers. The method further includes flushing the binder/diluent emulsion using the diluent at the end of a binder application run to prevent curing of the emulsion and clogging of the apparatus. The binder/diluent emulsion can be applied to the fibers either in the blowline or downstream of the blowline, such as in the blender. A method and apparatus are also disclosed for producing fire-retardant boards in which a fire-retardant chemical, such as an ammonium polyphosphate, is applied to the fibers downstream of the refiner and upstream of the mat-former. Finally, a fire-retardant board product is disclosed that is made in accordance with the foregoing described methods and apparatuses.
摘要翻译： 公开了一种用于从纤维素或木质纤维素纤维生产合成板的方法和装置，其中将标准异氰酸酯粘合剂乳化并立即施加到纤维上，然后固化成成品板产品。 该装置包括乳化和施用喷嘴，其包括稀释剂入口，粘合剂入口，用于乳化稀释剂和粘合剂的混合部分，以及用于将粘合剂/稀释剂乳液施加到纤维上的喷嘴。 该方法包括提供粘合剂流，供应稀释剂流，将粘合剂与稀释剂乳化并立即将乳液施加到纤维上。 该方法还包括在粘合剂施加运行结束时使用稀释剂冲洗粘合剂/稀释剂乳液，以防止乳液固化和装置堵塞。 粘合剂/稀释剂乳液可以在吹塑线或吹塑线的下游施加到纤维上，例如在混合器中。 还公开了一种用于制造阻燃板的方法和装置，其中将阻燃化学品如多磷酸铵施加到精磨机下游的纤维和垫料的上游。 最后，公开了根据前述方法和装置制成的阻燃板产品。
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