Hi Gabriele - in addition to the info that Tom provided, the IPC-1601A
specification has some information on "Silver Saver" paper which is used
for the purpose you are investigating.
Dave Hillman
Rockwell Collins
[log in to unmask]
On Tue, Jan 23, 2018 at 6:04 PM, SALA GABRIELE <[log in to unmask]> wrote:
> Hello
>
>
>
> Please, could someone there explain me the difference , if there is any,
> between Sulfur Free Paper and Acid Free Paper ?
>
>
>
> I am investigating about paper sheets interposed between PCB (ENIG and
> ImAg
> finisch) when piled up for packaging and shipping.
>
>
>
> Many thanks
>
>
>
> Gabriele
>
>
>
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