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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Another Film Guard Success
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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 07-17-2002 10:31 AM
Bruce McGee said: "R1 is vinegar and has some image color shift on the right side"Chances are that reel was stored for years on its side in a sealed container under conditions of heat and high humidity. The heat and humidity accelerated the onset of hydrolysis degradation of the triacetate base, and the acetic acid vapors were trapped and migrated to the right side of the roll, where they attacked the dyes. Even now, cool and dry storage conditions will help prolong the life of the film, and the storage container should allow the venting of any acetic acid vapors, or use a sealed container with Molecular Sieves. Wind and inspect the print occasionally to let the film "breathe" and release any buildup of acid vapors or tension within the rolls. http://www.kodak.com/country/US/en/motion/support/technical/molecular.shtml ------------------ 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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This topic comprises 3 pages: 1 2 3
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