公开(公告)号：US4561380A

公开(公告)日：1985-12-31

申请号：US622963

申请日：1984-06-21

申请人： Douglas C. Mulder ,  David E. O'Ryan

发明人： Douglas C. Mulder ,  David E. O'Ryan

IPC分类号： B05B7/14 ,  B05B15/12 ,  B05D1/12 ,  D04H1/60 ,  B05B7/06

CPC分类号： D04H1/60 ,  B05B7/1486 ,  Y10S239/03 ,  Y10S239/07

摘要： A method and apparatus is disclosed, in the presently preferred embodiment, for applying powdered adhesive to non-woven fabric material. The apparatus includes a novel powder spray gun wherein there is an air flow amplifier contained within the gun for accelerating the velocity of powder emitted from the gun and sprayed onto the top of a conveyorized web of the fabric material. The apparatus also includes a novel system for supplying powder to the spray gun, which system includes a first powder pump, a back-up pump and a control circuit responsive to detection of reduced powder flow to the gun to switch supply from the first pump to the back-up pump.

摘要翻译： 在目前优选的实施方案中，公开了一种将粉状粘合剂施加到无纺布材料上的方法和装置。 该装置包括一种新型的粉末喷枪，其中包含在喷枪内的气流放大器，用于加速从喷枪喷出的粉末的速度并喷射到织物材料的传送带上。 该装置还包括用于向喷枪供应粉末的新型系统，该系统包括第一粉末泵，备用泵和控制电路，其响应于检测到喷枪的粉末流量减少以将来自第一泵的供应切换到 备用泵。