Re: [ARSCLIST] Acetate disc sleeves

[Sam Brylawski <goodlistening@xxxxxxxxx>]

Hi Eric,

LC developed a nice disc sleeve several years ago. Metal Edge won the
contract to mfg it. The link to their catalog is:

http://www.metaledgeinc.com/Products.tpl?cart=11230736142091320&id1=25&id2=998&startat=1&--woSECTIONSdatarq=998&--SECTIONSword=ww&ran=5546

If that doesn't work, go to metaledgeinc.com and look under
"Phonograph Record and Film/Audio Reeel Storage: Archival Quality
Phonograph Record Storage Sleeve.

The sleeve is actually two, an acid-free board with center hole, and a
loose-fitting Mylar outer sleeve.

Sam

On 8/2/05, Eric Jacobs <ericj@xxxxxxxxxxxxxxxxxxx> wrote:
> What are your preferred sleeves for storing acetate (nitrocellulose) discs?
> 
> Here's the debate (per "Preservation and Storage of Sound Recordings",
> Pickett and Lemcoe, 1959):
> 
> 1.  The deterioration of nitrocellulose is accelerated by moisture
> 2.  The deterioration of nitrocellulose is accelerated by lack of air
> circulation
> 
> Which is the lesser evil - moisture or air circulation?
> 
> Assume that the storage environment is approximately 70F and 50% RH and
> stable, and that the records may potentially remain undisturbed for many
> decades:
> 
> A.  Does the disc benefit from the additional protection of a vapor barrier
> as part of the envelope?  Or does the vapor barrier prevent adequate air
> circulation?  For example, a polyethylene sleeve, or a multi-layer
> paper/poly/foil/poly sleeve.
> 
> B.  Or are you better off with a 10-point folder paper type envelope which
> will breathe better than a sleeve with a vapor barrier?
> 
> C.  What about paper type sleeves with center cut-outs for viewing the
> label?  They provide good air circulation, but provide no protection against
> contaminants or moisture.
> 
> Now that our collection has been properly cleaned and transferred (16-inch
> audiodiscs), we would like to store it as well as possible, including the
> selection of an optimal sleeve.
> 
> Eric Jacobs
> The Audio Archive
>