Hendrik Eisinga - Houston TX
A filter press frame and method, operable for compressing a stack of filter plates, provides a very light frame as compared to the iron, steel and stainless steel filter press frames that have been used for the last one hundred years. The filter press frame of the present invention is formed of material much more resistant to corrosion for a much wider pH spectrum of acids and bases than iron, steel, and stainless steel frames. In a preferred embodiment, the filter press tail, follower, and head, referred to generally as head members, are comprised of core material inserts encapsulated with fiber reinforced plastic. Laminates have a thickness and fibers are oriented to optimize the construction strength of the components based on stresses that are preferably anticipated through techniques such as finite element analysis. Unidirectional fiber reinforced plastic is used to form an endless looping sideband that encircles the head members and is suitably capable of supporting the very high forces normally associated with filter presses. Multidirectional fiber reinforced plastic is used to form the head members.