[QuadList] Plasticizer--Photos?

[John Walko]

We've seen this before on 1" videotapes.  I do not know the brand.  I didn't
think to look at what brand/type of 1" tape it was.I just assumed it was a
problem with all 1" tapes of a certain age.

 

What we noticed was a white power when cleaning the tapes.  This white dust
would get all over the cleaner and on the Plexiglas door that covers the
cleaning tissue and burnishing guides.  We originally thought it was mold,
but upon checking we found out that mold would not come off the tape as a
dust.  In fact, mold would smear on the tape.

 

I don't think it is a plasticizer.what I've been told is that it is the
lubricants in the tape that are solidifying and coming to the surface of the
tape.  If you clean the tapes, you can get a good play, but if you allow
them to sit for a couple of weeks after cleaning, the white dust will be
back.  If you clean the white material off with alcohol, it turns the
cleaning cloth yellow.which will eventually fade over time.  I used to have
one of the cleaning cloths that I used for demo purposes.but it has since
faded back to white (not as effective a demonstration any more).

 

John Walko

Scene Savers

800-978-3445

859-291-5100 (extension 1110)

 

From: quadlist-bounces at quadvideotapegroup.com
[mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of Ted Langdell
Sent: Wednesday, March 17, 2010 11:48 AM
To: videovault at sky.com; Quad List
Subject: Re: [QuadList] Plasticizer--Photos?

 

If I'm correctly interpreting what Walter's describing here... 

 

When dealing with film, it appears as a dandruff-like stuff.  

 

We see a lot of that on telecine's Particle Transfer Rollers when
transferring older material.

 

Walter: is this what you're referring to?

 

If you take a digital picture or several photos, please post to the list as
attachments.  

 

Keep the entire message size under 1MB and it will go directly to the list.
Otherwise it gets held up for list-parent review.

 

Ted

 

On Mar 17, 2010, at 10:24 AM, Trevor Brown wrote:





Never heard it called that before

What brand are the tapes in particular the 2"   ie Memorex Chroma 90 ?

Trevor

UK Member

 

From: quadlist-bounces at quadvideotapegroup.com
[mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf OfWalter Forsberg
Sent: 17 March 2010 15:15
To: quadlist at quadvideotapegroup.com
Subject: [QuadList] Plasticizer

 

Hello Quad Groupers-

 

I'm looking for info / documentation / personal experiences any of you may
have had with white plasticizer, offering itself up from the winds/packs of
2" and 1" videotape.

 

Specifically, are there any trends or commonly believed reasons for this
stuff appearing? (Eg. specific stocks, a particular environmental storage
condition, or manufacturer's container / reel materials.)

 

I'd also be happy to receive a quoted forward of past discussions on this
topic, as I'm a relative newbie to the list.

 

Happiest shamrocks & thanks in advance,

 

Walter Forsberg

NYU-MIAP

 

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Ted Langdell

Secretary




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