Carl,

For me, these fibres are strictly verboten! If they are a natural fibre,
they are almost certainly hygroscopic. If they are synthetic, they may
be, as well, but they may also harbour electrostatic charges. Either
way, you don't have a clue what is on them, in the way of contamination.

Brian

[log in to unmask] wrote:
>
>         Hello Technetters,
>
> Need everyone's input on this issue.
>
> Have a customer who is unhappy with "Brush" (Bristle or similar) fibers on
> board. They are specifically mentioning section 7.2 and figure 7-4. Picture
> shows many instances of particulate matter. We are seeing 1 or 2 brush
> fibers (non-conductive). What is the issue or feelings of the experts out
> there on this being a defect? The board is OK except for the brush fibers.
> The customer does not have a standard saying fibers are not allowed, just
> citing the above mentioned paragraph and verse.
>
> Thanks in advance for your input,
>
> Carl Barnes
> Production Process Analyst
> 480-968-6790
> extension: 4236
> Page At: 602-201-1435
>
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