Enclosure ventilation filter
AssigneeDonaldson Company, Inc.
InventorsLloyd G. Keleny, Veli E. Kalayci, Michael J. Hebert, Yehya A Elsayed, David W. Mulder, Andrew J. Dallas
Life of this patent
Estimating the term…
Abstract
A filter assembly for an enclosure, particularly for an ostomy bag, is described having an enclosure side, a first layer which is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web. The enclosure side of the filter assembly includes an adhesive zone in which adhesive is present having an outer adhesive perimeter and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area. A method of assembly is also described.
Claims20
A filter assembly for an enclosure, comprising:
- an enclosure side and a side opposite from the enclosure side;
- a first layer which is gas permeable;
- and
- an adsorbent layer comprising adsorbent particles, wherein the adsorbent particles comprise activated carbon and wherein the adsorbent layer contains less than 2% binder material by weight;
- wherein the enclosure side of the filter assembly comprises:
- an adhesive zone in which adhesive is present having an outer adhesive perimeter;
- a weld area adjacent to at least a portion of the adhesive zone, where the filter
- assembly is heat-sealable to the enclosure at the weld area.
A filter assembly for an enclosure, comprising:
- an enclosure side and a side opposite from the enclosure side;
- a first layer which is gas permeable;
- and
- an adsorbent layer comprising adsorbent particles, the adsorbent layer further comprising the adsorbent particles dispersed in a fine fiber web comprising electrospun polymeric fine fibers;
- wherein the enclosure side of the filter assembly comprises:
- an adhesive zone in which adhesive is present having an outer adhesive perimeter;
- a weld area adjacent to surrounding at least a portion of the adhesive zone, where
- the filter assembly is heat-sealable to the enclosure at the weld area.
A system of filter assemblies for an enclosure and a release liner, comprising:
- a release liner;
- and
- a plurality of filter assemblies located on the release liner, each filter assembly comprising:
- an enclosure side and a side opposite from the enclosure side;
- a first layer which is gas permeable;
- and
- an adsorbent layer comprising adsorbent particles, wherein the adsorbent particles comprise activated carbon and wherein the adsorbent layer contains less than 2% binder material by weight;
- wherein the enclosure side of the filter assembly comprises:
- an adhesive zone in which adhesive is present having an outer adhesive perimeter;
- a weld area adjacent to at least a portion of the adhesive zone, where the
- filter assembly is heat-sealable to the ostomy bag at the weld area.
Dependencies are inferred from the claim text.