Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


pump print stencil

Views: 1768

#52812

pump print stencil | 6 December, 2007

hi,

we use pump print stencil and have problem with cleaning.we clean the stencil handling, using zestron301, but in the holes stay adhesive.Take a test with ultrasonic cleaner but resalt is not good.

reply »

#52813

pump print stencil | 6 December, 2007

With this small amount of background information on the situation, comments are: * If you let adhesive cure on your stencil, you should not be using Zestron 301. A hammer and chisel is more effective. * Assuming you are not letting the adhesive cure, is Zestron 301 recommended by your adhesive supplier? * Assuming Zestron 301 is a recommended cleaning agent, are you following the recommended practices for pump print stencils from Zestron, like: http://www.krepro.no/vask_rens/stencil_pump_print.pdf

* Search the fine SMTnet Archives for previous postings on the topic, like: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=20839

* Although more oriented towards paste cleaning, review IPC-7526 - Stencil and Misprinted Board Cleaning Handbook here: http://www.ipc.org/html/IPC-7526.pdf

reply »

PCB Soldering Tools

SMT Custom Nozzles