Ultra-high filtration filter

Details Ultra-high filtration filter Ultra-high filtration filter

A - Human Necessities

24

D

131/17

A24D 3/06 (2006.01) A23G 3/12 (2006.01) A24D 3/02 (2006.01) A24D 3/04 (2006.01) A24D 3/08 (2006.01) B01D 39/16 (2006.01) B29C 47/02 (2006.01) B29C 47/28 (2006.01) B32B 17/04 (2006.01) D04H 1/00 (2006.01)

Patent

CA 1298751

ABSTRACT OF THE DISCLOSURE An ultra-high efficiency cigarette filter is formed from a web of entangled ultra-fine melt blown plastic fibers of extremely low bulk density. The web is formed into a substantially cylindrical rod and is encapsulated in and supported by an external plastic tube which adheres to the outer surface of the rod over the entire area of contact therebetween. Cigarette filters in accordance with the invention may have filtration efficiencies in excess of 80%. The disclosure also includes processes and apparatus for manufacturing the high efficiency filters.

559576

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