Cylindrical screen construction for a filter and method of produ

Details Cylindrical screen construction for a filter and method of produ Cylindrical screen construction for a filter and method of produ

1989-12-04

1990-11-13

Hart, Charles

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55491, 55498, 55514, 55525, 156157, 156218, 1563043, 210499, B01D 2900

Patent

active

049699997

ABSTRACT:
A cylindrical screen construction for a filter and a method of producing the screen. A sheet of metal screen containing a multiplicity of holes is rolled into cylindrical form and the longitudinal edges of the sheet are joined by a thermoplastic connecting strip. The strip is generally H-shaped in cross section having a pair of opposed longitudinal grooves that receive the respective edges of the sheet. Heat and pressure are applied to the strip causing the thermoplastic material to fuse and penetrate the holes along the side edges of the screen to provide a smooth surfaced mechanically interlocked joint between the edges.

REFERENCES:
patent: 3674154 (1972-07-01), Sicard
patent: 3765537 (1973-10-01), Rosenberg
patent: 3970079 (1976-07-01), Gaylord
patent: 4740303 (1988-04-01), Greutert et al.

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