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1996

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From:
Maurice Dore * <[log in to unmask]>
Date:
Thu, 28 Mar 96 12:41:00 GMT
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Firstly can you  advise me on the existence of the ANSI/J-STD-011

Secondly has anyone any information on the "potato chip effect".
As far as I can gather it is the stretching of the laminate caused by the 
impact of the abrasive scrub used in the preparation of innerlayers for 
photoresist.
I have recent;y come across a PCB assembly with a warpage which I am trying 
to determine it's cause and I am trying to eliminate the potato chip effect.
Also note, when I baked the assembly, it somewhat removed the warping of the 
board.
Can anyone comment on my situation and help me understand the potato chip 
effect and problems it causes if present on an assembly board.

Thanks in advance

Moss Dore
AMT
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