| 摘要 |
<p>1,273,087. Coating-apparatus. ACUMETER LABORATORIES Inc. 21 Aug., 1970 [5 Jan., 1970], No. 40449/70. Heading B2L. Apparatus for coating a substrate comprises a reservoir 6 for coating medium, a pump 6 for pumping the medium from the reservoir through a distribution member having a value 2' movable between two positions to open and block fluid communication between inlet position 9 and an outlet position 11 and thence to a nozzle member 13, the nozzle 13 having an inlet passage 11 and an outlet passage 30 and an intermediate passage 13", the intermediate and outlet passages being wider in the transverse direction than the inlet passage and the intermediate passage 13" providing an expansion chamber. The valve 2' has an opening 14 which connects the fluid supply line 4' with either the outlet 11 or return pipe 4" and is moved between these positions by a piston and cylinder 16 controlled by a valve (not shown) in the substrate feed mechanism. The dimension of the slit in the application nozzle is also varied by a rotatable screw drive 30' from the substrate feed mechanism in order to produce an even coating.</p> |
