IP Library Granted Patent US 11,364,461
Granted Patent B2
US 11,364,461 · App. 16/723,055 · Granted Jun 21, 2022

Air filtration media with performing enhancing additives and method for application thereof

Inventor: Glenn F. Cueman (Denver, NC)
Assignee: PPA Industries, Inc.
B01D46/521B01D46/0001B01D46/0005B01D46/0028B01D46/0038B01D2279/65
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Quick Facts
Patent No.
US 11,364,461
App. No.
16/723,055
Granted
Jun 21, 2022
Kind
B2
Abstract

The present invention provides methods and systems for an air filter that includes a filtration material having at least one surface, an enclosed frame surrounding said filter material but exposing said one surface, said filter material having intermittent geometric shapes of latex on said at least one surface, said latex containing an enhanced additive.

Claims (32)

1. A method of making an air filter with at least one enhanced additive, comprising:

producing an air filtration media;

printing a latex base containing the at least one enhanced additive on the air filtration media;

folding the air filtration media to form a plurality of v-shaped pleats;

incorporating the air filtration media into a paperboard frame; and

wherein the latex base is in the form of at least one intermittent geometric shape.

2. The method of making an air filter according to claim 1 , wherein the at least one enhanced additive contains at least one antimicrobial agent.

3. The method of making an air filter according to claim 1 , wherein the at least one enhanced additive contains at least one odor control additive.

4. The method of making an air filter according to claim 2 , wherein the at least one antimicrobial agent is zinc pyrithione.

5. The method of making an air filter according to claim 3 , wherein the at least one odor control additive is selected from the group consisting of carbon, natural or synthetic zeolites, molecular sieves, silica gel, and/or baking soda.

6. The method of making an air filter according to claim 1 , wherein the at least one intermittent geometric shape is a plurality of generally circular dots, squares, and/or lines.

7. The method of making an air filter according to claim 1 , wherein the at least one enhanced additive contains at least one antimicrobial agent and at least one odor control additive.

8. A method of applying at least one enhanced additive to a non-woven fabric, comprising:

providing the non-woven fabric having a first side and a second side;

printing a plurality of intermittent deposits of a latex base over at least the first side of the non-woven fabric, the at least one enhanced additive is incorporated into the latex base;

curing the latex base;

folding the non-woven fabric to form a plurality of v-shaped pleats, wherein the plurality of intermittent deposits are disposed intermittently on the v-shaped pleats; and

incorporating the non-woven fabric into a paperboard frame.

9. The method of applying at least one enhanced additive to a non-woven fabric according to claim 8 , wherein the latex base is printed by a process using water based latex polymer emulsion.

10. The method of applying at least one enhanced additive to a non-woven fabric according to claim 8 , wherein the at least one enhanced additive contains at least one antimicrobial agent.

11. The method of applying at least one enhanced additive to a non-woven fabric according to claim 8 , wherein the at least one enhanced additive contains at least one odor control additive.

12. The method of applying at least one enhanced additive to a non-woven fabric according to claim 10 , wherein the at least one antimicrobial agent is a zinc pyrithione.

13. The method of applying at least one enhanced additive to a non-woven fabric according to claim 11 , wherein the at least one odor control additive is selected from the group consisting of carbon, natural or synthetic zeolites, molecular sieves, silica gel, and/or baking soda.

14. The method of applying at least one enhanced additive to a non-woven fabric according to claim 8 , wherein the latex base is in the form of at least one geometric shape.

15. The method of applying at least one enhanced additive to a non-woven fabric according to claim 14 , wherein the at least one geometric shape is a plurality of generally circular dots, squares, and/or lines.

16. The method of applying at least one enhanced additive to a non-woven fabric according to claim 8 , wherein the enhanced additive contains at least one antimicrobial agent and at least one odor control additive.

17. A method of making an air filter with at least one enhanced additive, comprising:

providing a non-woven fabric with a first side and a second side and a water based latex polymer emulsion with at least one enhanced additive;

printing the water based latex polymer emulsion on at least the first side of the non-woven fabric in the form of at least one intermittent geometric shape;

curing the water based latex polymer emulsion;

folding the non-woven fabric to form a plurality of v-shaped pleats, wherein the water based latex emulsion is intermittently disposed on the v-shaped pleats; and

incorporating the non-woven fabric into a paperboard frame.

Assignments (2)
CHANGE OF NAME Recorded Aug 8, 2025
From: PPA INDUSTRIES, INC.
To: FREUDENBERG RESIDENTIAL FILTRATION TECHNOLOGIES, INC.
Reel/Frame 072975/0823 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2019
From: CUEMAN, GLENN F.
To: PPA INDUSTRIES, INC.
Reel/Frame 051346/0750 →
Continuity (3)
Division 15630352 · Jun 22, 2017
Provisional Application 62353070 · Jun 22, 2016
Related Publication 20200122077A1 · Apr 23, 2020