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Author Topic: VS on dice?
Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 09-24-2002 05:05 AM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Apparently it doesn't affect just film...
click here


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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000


 - posted 09-24-2002 05:52 AM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
Yep --- it's likely the same hydrolysis reaction.
http://www.kodak.com/US/en/motion/support/technical/vinegar.shtml
http://www.kodak.com/US/en/motion/support/technical/molecular.shtml
http://www.stildesign.com/english_site/pages_eg/art_eg_032002.htm
http://www.screensound.gov.au/glossary.nsf/Pages/Decomposition?OpenDocument

Again, cool, dry and vented storage will slow the onset of these degradation reactions. If sealed containers are used, Molecular Sieves will adsorb excess moisture and acid vapors, greatly slowing the degradation.

Moral of the story, don't store film or dice in a humid tropical environment, or in your damp basement or hot attic. For home "archives", a nice cool, dry, air-conditioned room would be good.

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion


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Leo Enticknap
Film God

Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000


 - posted 09-24-2002 07:09 AM      Profile for Leo Enticknap   Author's Homepage   Email Leo Enticknap   Send New Private Message       Edit/Delete Post 
For a reaction of a slightly more spectacular sort, someone told me once that billiard and snooker balls would occasionally ignite during a game in the early part of the century, when cellulose nitrate was used in their manufacture.


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Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99


 - posted 09-24-2002 09:44 AM      Profile for Scott Norwood   Author's Homepage   Email Scott Norwood   Send New Private Message       Edit/Delete Post 
I believe that dice were once made of cellulose nitrate as well.

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Jeff Taylor
Jedi Master Film Handler

Posts: 601
From: Chatham, NJ/East Hampton, NY
Registered: Apr 2000


 - posted 09-24-2002 10:11 AM      Profile for Jeff Taylor   Email Jeff Taylor   Send New Private Message       Edit/Delete Post 
Yea, but I'd still rather lose some dice or billiard balls to VS than a valuable print!

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000


 - posted 09-24-2002 10:15 AM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
I wonder if any small volume manufacturers of small plastic items like dice just recycled old nitrate or acetate film stock by dissolving film in solvent to make "dope" and cast it into the new items?
http://www.plastiquarian.com/
http://www.nswpmitb.com.au/HistoryOfPlastics.html
http://www.terrificscience.org/lessonexchange/PACTPDF/PolymerLab21.pdf
___________________________________________________________________

From "The Graduate":

Mr. McGuire: I just want to say one word to you... just one word.
Benjamin Braddock: Yes, sir.
Mr. McGuire: Are you listening?
Benjamin Braddock: Yes, sir I am.
Mr. McGuire: "Plastics."


------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion


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John Schulien
Expert Film Handler

Posts: 206
From: Chicago, IL, USA
Registered: Nov 1999


 - posted 09-24-2002 11:29 AM      Profile for John Schulien   Email John Schulien   Send New Private Message       Edit/Delete Post 
They'd have a significant waste stream of solvent-soaked emulsion if they did.

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000


 - posted 09-24-2002 12:01 PM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
When film base is recycled, the gelatin emulsion is usually stripped off with bleach or enzymes.

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion

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