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Reply To: | TechNet E-Mail Forum. |
Date: | Mon, 28 Feb 2000 15:13:31 -0500 |
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Hi Francis and all,
3 mils over 6 inches is huge!
Any changes in temp. & rel. humidity between the printing or inspection
environments? Your film might be shrinking or expanding. We have tight
tolerances for our inner layers +/- .5 mil on the artwork and were not doing
1 mil lines.
Does your photoplotter have air bladders? It could be misprinting or the
rollers could be stretching the film. (So says Patty, our design engineer
super-heroine.)
Hans
~~~~~~~~
Hans M. Hinners
Materials (& Process!) Engineer
Warner Robins - Air Logistics Center/Avionics Production Division
Manufacturing Branch (LYPME)
380 Second Street, Suite 104 (Building 640)
Robins AFB, GA 31098-1638
912-926-1970 (Voice) 468 - 1970 (DSN) 912-926-7164 (Fax)
mailto:[log in to unmask]
> -----Original Message-----
> From: Francis Lai [SMTP:[log in to unmask]]
> Sent: Friday, February 18, 2000 07:57
> To: [log in to unmask]
> Subject: [TN] Accuracy of film against CAD
>
> Hello :
> Can anyone tell me how accurate is the plotting of film against the CAD.
> I mean the accuracy of mylar film against the CAD. We are experiencing a
> 3 mil shift in a 6in by 6 in film. We are doing 1 mil line or gap with
> 0.25mil per edge, so accuracy is important to us.
>
> THANKS!!!!!!
>
> FRANCIS
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