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Old 12-24-2007, 07:35 AM   #10
Ralph P
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Join Date: Aug 2004
Location: delmar
Posts: 13,380
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"vinyl" (V) or polyvinyl chloride (PVC)

used for short-term business document storage
good transparency (clarity)
chemical and weather resistant
scratch-proof
"all PVC polymers are degraded by light and heat, hydrogen chloride is eliminated and oxidation occurs" (http://www.plasticsusa.com/pvc.html)
retains water (8%)
"chemicals used to make this type of plastic can react with water vapor to form hydrochloric acid and quickly damage a paper collection."
Not suitable for archival storage purposes
uses: "leatherette" fabric, gloves, flying discs, carpet & flooring, pipes, exterior siding, 3-ring binders, bubble wrap.
not recommended for use with silver.
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