Flame resistant viscose filter apparatus and method
A filter assembly includes a filter pad comprising flame resistant viscose. The filter assembly also includes a bonding emulsion. The bonding emulsion may comprise casein resin. The bonding emulsion may additionally comprise acrylic resin. The filter assembly also includes a structural support. In particular embodiments, at least a portion of the fibers are treated with a solution that is fire resistant or fire retardant.
1. A kitchen vent hood filter assembly, the filter assembly comprising:
a filter pad comprising oleophilic fibers and viscose fibers, wherein:
the filter pad is formed through at least one of thermo-bonding, air-laid, and spunbond;
approximately 25% of the viscose fibers have a linear density between between 8-9 denier;
approximately 25% of the viscose fibers have a linear density of approximately 2 denier;
the viscose fibers comprise approximately 50% of the fibers of the filter pad; and
the oleophilic fibers comprise approximately 50% of the fibers of the filter pad;
a bonding emulsion; and
a structural support providing support to the filter pad to maintain the filter pad in a generally flat configuration and to allow installation of the filter pad within a ventilation hood.
2. The filter assembly of claim 1 , wherein at least a portion of the viscose fibers of the filter pad are blended with synthetic fibers.
3. The filter assembly of claim 1 , wherein at least a portion of the viscose fibers of the filter pad are blended with wool fibers.
4. The filter assembly of claim 1 , wherein the bonding emulsion comprises at least one of: casein resin, acrylic resin, starch, protein, and polylactic acid.
5. The filter assembly of claim 1 , wherein the structural support comprises supports extending between opposite sides of the filter pad.
6. The filter assembly of claim 1 , wherein the structural support comprises a biodegradable material that is fire resistant.
7. The filter assembly of claim 1 , wherein the structural support is disposed around adjacent edges of the filter pad and not in a middle portion of the filter pad.
8. The filter assembly of claim 1 , wherein the oleophilic fibers of the filter pad are wool fibers.
9. The filter assembly of claim 1 , wherein at least a portion of the filter pad is treated with a solution that is fire resistant or fire retardant.
10. The filter assembly of claim 1 , wherein the filter assembly has a total dry weight approximately between 50 grams per square meter to 500 grams per square meter.
11. The filter assembly of claim 1 , wherein the filter assembly has a dry loft of approximately between 5 mm and 50 mm.
12. The filter assembly of claim 1 , wherein:
the viscose fibers are flame resistant;
the viscose fibers are fire retardant; or
the viscose fibers are treated with a solution that is fire resistant or fire retardant.
13. A method of manufacturing a kitchen vent hood filter assembly, comprising:
forming a filter pad comprising oleophilic fibers and viscose fibers, wherein:
the filter pad is formed through at least one of thermo-bonding, air-laid, and spunbond;
approximately 25% of the viscose fibers have a linear density between 8-9 denier;
approximately 25% of the viscose fibers have a linear density of approximately 2 denier;
the viscose fibers comprise approximately 50% of the fibers of the filter pad; and
the oleophilic fibers comprise approximately 50% of the fibers of the filter pad;
applying a bonding emulsion to the filter pad; and
securing the filter pad to a structural support, the structural support configured to provide support to the filter pad to maintain the filter pad in a generally flat configuration and to allow installation of the filter pad within a ventilation hood.
14. The method of claim 13 , wherein the viscose fibers of the filter pad are blended with wool fibers.
15. The method of claim 13 , wherein the viscose fibers of the filter pad are blended with synthetic fibers.
16. The method of claim 13 , wherein the bonding emulsion comprises at least one of: casein resin, acrylic resin, starch, protein, and polylactic acid.
17. The method of claim 13 , wherein the structural support comprises supports extending between opposite sides of the filter pad.
18. The method of claim 13 , wherein the structural support comprises a biodegradable material that is fire resistant.
19. The method of claim 13 , wherein the structural support is disposed around adjacent edges of the filter pad and not in a middle portion of the filter pad.
20. The method of claim 13 , wherein the oleophilic fibers of the filter pad are wool fibers.
21. The method of claim 13 , further comprising treating at least a portion of the filter pad with a solution that is fire resistant or fire retardant.
22. The method of claim 13 , wherein the filter assembly has a total dry weight approximately between 50 grams per square meter to 500 grams per square meter.
23. The method of claim 13 , wherein the filter assembly has a dry loft of approximately between 5 mm and 50 mm.
24. The method of claim 13 , wherein:
the viscose fibers are flame resistant;
the viscose fibers are fire retardant; or
the viscose fibers are treated with a solution that is fire resistant or fire retardant.