Coating method
    2.
    发明授权
    Coating method 失效
    涂布方法

    公开(公告)号:US5498447A

    公开(公告)日:1996-03-12

    申请号:US331482

    申请日:1994-11-04

    摘要: A coating method which is characterized in that, when the surfaces of solid particles kept flowing are spray-coated with a thermally melted wax, a two-fluid nozzle adapted to mix a thermally melted wax with a heating gas in and eject the resultant mixture from one flow passage and eject a heating gas from the other flow passage is used, the two-fluid nozzle having spray ports of a diameter of 1.5 to 5.8 mm, and the two-fluid nozzle having no needle valve. According to this method, the use of an organic solvent for melting wax is omitted, and complicated operations for pulverizing a wax and for thermally melting the wax powder after it has been deposed on solid particles are not required. This method can also prevents clogging of the nozzle, powdering of the melted wax and forming of agglomerated solid, and permits simple and easy production of sustained release preparations and preparations for masking materials of unpleasant and bitter tastes.

    摘要翻译: PCT No.PCT / JP93 / 00543 Sec。 371日期:1994年11月4日 102(e)1994年11月4日PCT PCT 1993年4月27日PCT公布。 No.W093 / 21893 PCT出版物 日期:11月11日,1993。一种涂布方法,其特征在于,当保持流动的固体颗粒的表面被热熔融蜡喷涂时,适于将热熔融蜡与加热气体混合的双流体喷嘴 并且从一个流动通道喷出所得到的混合物,并且使用来自另一个流动通道的喷射加热气体,双流体喷嘴具有直径为1.5至5.8mm的喷射口,并且没有针阀的双流体喷嘴 。 根据该方法,省略了使用有机溶剂来熔融蜡,并且不需要用于粉碎蜡并且在将蜡粉放置在固体颗粒上之后将其熔化的复杂操作。 这种方法还可以防止喷嘴的堵塞,熔融蜡的粉化和聚集的固体的形成,并且允许简单和容易地生产用于掩蔽不愉快和苦味的材料的缓释制剂和制剂。