Method of manufacturing a separator frame for a stack in an exch

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156250, 156258, 55158, 204238, 210224, 2103216, 21032175, 21032184, 210397, 210488, B32B 300

Patent

active

051850486

ABSTRACT:
Each separator frame constitutes a single part. It is made by assembling two thermoplastic films having the shape of the seal plane and sandwiched over two different types of thermoplastic expanded structure, e.g. polyethylene grids, a first one of these structures being designed to occupy the central opening of the frame and the second type of structure being designed to occupy the diffusers. According to the invention, and prior to assembly, the first expanded structure is crushed by hot compression over its entire area apart from the central opening. This crushing reduces the thickness of the expanded structure, preferably by more than 50%. Cut-outs are formed in the first structure after it has been compressed in this way and cut-out pieces of the second expanded structure are placed therein, which pieces are themselves crushed in side strips for the purpose of retaining them in the assembly.

REFERENCES:
patent: 4209575 (1980-06-01), McDowell et al.
patent: 4737257 (1988-04-01), Boulton
patent: 4832804 (1989-05-01), Brattan
patent: 4999107 (1991-03-01), Guerif

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