Abstract
Current methods for the recovery and recycling of poly(ethylene terephthalate) (PET), from used X-ray and lithographic films, are described. The principal problems involving initial separation of silver, poly(vinylidene chloride) (PVDC), gelatin, adhesive tape and paper are described, prior to recovery of PET. Structures and physical properties of PVDC and PET are described, and chemical methods for the recovery of silver and PET and techniques for the removal of paper and adhesive tape are given. Quality assessment of recovered PET is by determination of key physical and mechanical properties. Emphasis is placed on the necessity of recovery material of adequate purity, at economical cost, for commercial use.
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