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May 2002

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Subject:
Re: High Voltage tracking on pbc surface
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 16 May 2002 17:37:52 +0300
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Moonman

There's no way a commercial double-sided laminate over 2 mm thick will
use 106 style, or any monofilament cloth. It will be made from 7628 or
7634, with c. 40% - 45% RC. Quite apart from economic factors, the use
of fine cloths with high resin contents will induce slippage, causing
all sorts of dire problems.

Best regards,

Brian

Earl Moon wrote:
>
> Doug,
>
> Very profound and interesting. I'd like to get deeper into this if you will.
>
> The surface layer pregs usually are 106, or so, glass styles. The resin to
> glass ratios are in the 65 to 70% range. I should think this would offset
> any problems suggested.
>
> Just exploring a bit,
>
> Earl
>
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