Electronics Forum | Thu Mar 14 10:49:44 EDT 2013 | babe7362000
Have others seen a higher rate of machine downtime due to the cover tape on parts not pulling back properly. We have the same problem on the Jukis and Quads. About every 3 minutes the machine stops and the operator has to pull the tape back. And in
Electronics Forum | Thu Jun 15 03:31:26 EDT 2006 | Bert van den Berg
The cover tape on 0805, 1206 and IC reels occasionally does not pull back clear of the tape and our Fuji IP-1 stops. Although some feeders appear to be more vulnerable to this than others, is this a feeder problem or is this a material problem with
Electronics Forum | Thu Aug 30 17:28:52 EDT 2012 | isd_jwendell
If the goal is to get employees to pull back their hair, I would use the "one hair can contaminate the process..." argument instead of potential ESD danger. Then offer them a choice, either pull back your hair or get a hair net (or hair bag). I don't
Electronics Forum | Tue Jul 30 10:04:51 EDT 2002 | dason_c
Dave, I am very interesting to know about the dewetting or pull back, we are currently use the uP78 paste. Will nitrogen, profile setting help to reduce the dewetting. Thank.
Electronics Forum | Fri Jun 16 10:12:16 EDT 2006 | flipit
It it PSA tape or heat seal? Every machine I have ever used has trouble with PSA cover tape. I wish they would ban in in ROHS. 3M tells me it is the future and it will replace heat seal tape.
Electronics Forum | Mon Nov 26 15:15:05 EST 2007 | realchunks
I agree with James. Granted there are a variety of lasers to try, we too could not get a consistent power setting. Plus when paste turns liquid, you get some reflection. Also the mask around the pad has to be pulled back or burning may occur.
Electronics Forum | Tue Sep 18 10:29:21 EDT 2012 | davef
Sorry. I don't see any solder balls. To me, it looks like the solder wetted the pad and then pulled back. It's called dewetting. It's a defect. Ask your supplier for a SEM analysis. I'm interested to know what he / she says.
Electronics Forum | Wed Mar 13 17:13:36 EDT 2013 | isd_jwendell
On an Essemtec machine I solved my sticky tape problem by routing the cover tape different than normal so that it pulls back more instead of up. I'm not familiar with your feeders and don't know if that is even a possibility.
Electronics Forum | Mon Mar 18 10:33:27 EDT 2013 | babe7362000
It is not the feeders having the issue. The tape on the strip of parts does not want to pull up easily. I just wondered if anyone else out there is having the same issue. Thanks for any feedback.
Electronics Forum | Wed Mar 20 18:11:10 EDT 2013 | garym4569
Is the problem with the same component or manufacturer? Just for kicks, load a different component on the same feeder. Run machine in trial mode and place only that component on double sided tape. Gary
