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ARSCLIST  December 2015

ARSCLIST December 2015

Subject:

Re: Interesting sticky-shed data point

From:

Tom Fine <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Thu, 17 Dec 2015 21:27:12 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (41 lines)

I thought the numbers on the box and on the stickers box indicated batch numbers and dates of 
manufacture, indicating that all pancakes in the box were from that batch and date. At least that's 
how I always understood 3M and Ampex boxes.

-- Tom Fine

----- Original Message ----- 
From: "Lou Judson" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 17, 2015 7:54 PM
Subject: Re: [ARSCLIST] Interesting sticky-shed data point


Tom, is it a documented fact that all (12) rolls (reels or pancakes) of tape in a box would be from 
the same manufacturing/slurry batch? I never looked, but it would not surprise me if there were 
different manufacturing runs on the same delivery carton…

<L>
Lou Judson
Intuitive Audio
415-883-2689

On Dec 17, 2015, at 4:38 PM, Tom Fine <[log in to unmask]> wrote:

> Hi Marie:
>
> This is very strange:
>> I have also had reels of Ampex 456 come out of the same box of 10 or 20 and
>> purchased at the same time where 1/2 have SSS and the rest are fine!
>>
>
> I've never heard of that from anyone else. That would almost seem to defy all theories of what 
> causes sticky-shed, because one would assume by a "box" of tapes you mean a real-deal Ampex case 
> with a batch number on it. If that's so, it's really freaky that some tapes in the same batch 
> (which I think means the same production run of the chemical slurry) would get sticky-shed and 
> others wouldn't.
>
> I'm not doubting your testimony at all, just saying that is calls into question what is believed 
> to be the cause of sticky-shed, in that I can't see how the binder chemistry could differ within a 
> batch.

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