Method of recycling wash-water resulting from film treatment
AssigneeEastman Kodak Company
InventorDidier J. Martin
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Abstract
The invention relates to a method of recycling wash-water resulting from the treatment of a film provided with a carbon particles based backing layer, and especially from a washing treatment to remove the said carbon particles based backing layer. The method comprises the step of passing the wash-water through an microfiltration unit equipped with a microfiltration membrane made from a polytetrafluorethylene-based membrane. The method enables the regeneration of the wash-water and its recycling with a high efficiency and considerable lowering of the water consumption used in this step of the processing.
Claims5
A method of recycling wash-water resulting from the treatment of a film provided with a carbon particles based backing layer, said treatment comprising a washing treatment to remove said carbon particles based backing layer, wherein said method comprises the step of passing said wash-water through an microfiltration unit equipped with a microfiltration membrane made of polytetrafluorethylene-based material, wherein a permeate is obtained, and wash-water free of said carbon particles is obtained in said permeate.
Dependencies are inferred from the claim text.