Gas separation – Zigzag – corrugated – or conical
Patent
1978-04-24
1979-04-03
Lutter, Frank W.
Gas separation
Zigzag, corrugated, or conical
55499, 55500, B01D 4652
Patent
active
041475240
ABSTRACT:
A plurality of laterally spaced parallel tapes extend along each side of a strip of filter material in engagement with it, and the sheets and tapes are in accordion folded form so that there is a stack of integrally connected parallel filter sheets spaced apart by the portions of the tapes between them. Each tape has at its side of the stack exposed portions, along which a line of hardened adhesive extends to connect them and form a stiffening band, whereby there are parallel stiffening bands extending across each side of the stack of filter sheets.
REFERENCES:
patent: 2206684 (1940-07-01), Yant
patent: 2915426 (1959-12-01), Poelman
patent: 3870495 (1975-03-01), Dixson et al.
patent: 3871851 (1975-03-01), Neumann
Smith Wayne L.
Wolf Roger P.
Lutter Frank W.
Mine Safety Appliances Company
Prunner Kathleen J.
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