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Abstract

A new sanitary filter element is described which provides a structure which cannot harbor contaminants and is readily and thoroughly cleaned as needed. The new device utilizes a uniquely configured adhesive component and membrane and tricot channel sheets which are significantly trimmed in size following adhesive curing. Such configuration eliminates structures within the filter where bacterial and other contamination, or materials which support such contaminants, can accumulate. In addition, a novel cage structure provides turbulent fluid flow while having improved strength and furnishes a site for permanent identification indicia. Finally, an improved step in the manufacturing process, in which a temporary separation sheet is positioned between the membrane and the feed spacer, prevents the occurrence of random unwanted contact adhesions between the two before and during the curing of the adhesive bonding membranes and their adjacent tricot channeling sheets.

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First Claim