B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/106, 18/708
B01D 46/12 (2006.01) A62B 23/02 (2006.01) B01D 29/01 (2006.01) B29C 45/00 (2006.01) B29C 45/14 (2006.01) B29C 45/26 (2006.01)
Patent
CA 2036639
Abstract of the Disclosure A replaceable filter cartridge that has a peripheral frame and a sheetlike filter medium can be made in a simple, inexpensive, insert-molding operation. The mold has a cavity for producing a peripheral frame and shutoffs permitting each end of the strip to extend across the cavity. Resin injected into the cavity flows through and disrupts the continuity of the strip where it extends across the cavity, preferably fusing fibers of the filter medium into the resin that forms the frame. When the filter medium is pleated, its longitudinal edges are sealed to the frame in a serpentine path.
Elstran Gerald V.
Johansson Ronald C.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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