Laminated high efficiency filter

Details Laminated high efficiency filter Laminated high efficiency filter

1997-03-14

1999-05-04

Raimund, Christopher

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

442 36, 442392, 442400, 156 731, 156290, 1563082, B32B 2714, B32B 3116

Patent

active

059003057

ABSTRACT:
Electrostatic fibers with high efficiency for small particles and low pressure drop are formed by spot laminating an assembly of a stack of at least 2 layers of thermoplastic, electrostatic, non-woven media having lightweight scrims disposed on each end face of the stack between the nip of a roller with a pattern of raised dots and a heated roller or ultrasonic generator.

REFERENCES:
patent: 5240479 (1993-08-01), Bachinski
patent: 5283106 (1994-02-01), Seiler et al.
patent: 5306534 (1994-04-01), Bosses

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