Filter media and filter element with adhesive reinforcing

Patent metadata

Field	Value
Publication number	US-9827527-B2
Application number	US-201715439580-A
Country	US
Kind code	B2
Filing date	Feb 22, 2017
Priority date	Oct 10, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A method of reinforcing a filter media pack as well as a reinforced media pack is provided. The method includes forming a media pack to have an inlet face and an outlet face. The method includes applying a reinforcing agent to the media pack. The reinforcing agent is applied in a flowable state. The method also includes hardening the reinforcing agent to form a reinforcing structure to reinforce the media pack. Filter element having such a reinforcing structure is also provided.

First claim

What is claimed is:

1. A filter media pack comprising:
filter media having an inlet face and an outlet face;
a reinforcing structure being a composite structure comprising a reinforcing agent impregnated into the filter media such that the filter media forms a substrate and the reinforcing agent forms a hardened matrix;
wherein the filter media is z-media having a plurality of adjacent layers of fluted filter media defining the inlet face and the outlet face, each layer including a corrugated sheet and a facer sheet attached to the corrugated sheet, the layers of fluted filter media forming a plurality of inlet and outlet flutes extending between the inlet and outlet faces;
wherein the inlet flutes are open proximate the inlet face and closed proximate the outlet face by outlet end sealant and the outlet flutes are closed proximate the inlet face by inlet end sealant and open proximate the outlet face, the reinforcing agent being different than the inlet end sealant and outlet end sealant.

2. The filter media pack of claim 1 , wherein the filter media forms a plurality of pores therethrough and the reinforcing agent extends through at least some of the pores entirely through the filter media.

3. The filter media pack of claim 1 , wherein the reinforcing structure is formed proximate one of the inlet face and outlet face.

4. The filter media pack of claim 1 , further comprising a seal arrangement attached to the filter media proximate the reinforcing structure.

5. A filter media pack comprising:
filter media having an inlet face and an outlet face;
a reinforcing structure being a composite structure comprising a reinforcing agent impregnated into the filter media such that the filter media forms a substrate and the reinforcing agent forms a hardened matrix;
wherein the filter media is z-media having a plurality of adjacent layers of fluted filter media defining the inlet face and the outlet face, each layer including a corrugated sheet and a facer sheet attached to the corrugated sheet, the layers of fluted filter media forming a plurality of inlet and outlet flutes extending between the inlet and outlet faces; and
wherein the inlet flutes have an open end proximate the inlet face and a closed end proximate the outlet face and the outlet flutes have a closed end proximate the inlet face and an open end proximate the outlet face, the reinforcing agent does not close the open ends of the flutes.

6. A method of providing reinforcing of a media pack comprising:
forming a media pack to have an inlet face and an outlet face:
applying a reinforcing agent to the media pack, the reinforcing agent being applied in a flowable state;
hardening the reinforcing agent to form a reinforcing structure to reinforce the media pack;
wherein the media pack is z-media having a plurality of adjacent layers of fluted filter media defining the inlet face and the outlet face, each layer including a corrugated sheet and a facer sheet attached to the corrugated sheet to form a plurality of inlet and outlet flutes extending between the inlet and outlet faces; and
wherein each inlet flute has an open end proximate the inlet face and a closed end proximate the outlet face and each outlet flute has a closed end proximate the inlet face and an open end proximate the outlet face, the reinforcing agent does not close the open ends of the flutes; and, wherein the step of applying the reinforcing agent applies the reinforcing agent at at least one of the inlet face or the outlet face.

7. The method of claim 6 wherein applying the reinforcing agent includes immersing the at least one of the inlet face and the outlet face in the reinforcing agent in a bath of reinforcing agent in the flowable state.

8. The method of claim 7 , wherein applying the reinforcing agent includes immersing less than the entire media pack in the reinforcing agent.

9. The method of claim 6 , wherein the reinforcing agent is a liquid.

10. The method of claim 6 , wherein the reinforcing agent is a powder.

11. The method of claim 6 , wherein the step of hardening includes exposing the reinforcing agent to a predetermined wavelength of light.

12. The method of claim 11 , wherein the predetermined wavelength of light is UV.

13. The method of claim 6 , wherein the step of hardening includes heating the reinforcing agent.

14. The method of claim 6 , wherein the step of hardening includes actively drying the reinforcing agent.

15. The method of claim 6 , further comprising attaching a seal member to the media pack adjacent the reinforcing agent; and
wherein a portion of the seal member overlaps with a portion of the reinforcing agent.

16. The method of claim 6 , wherein the step of applying the reinforcing agent includes absorbing the reinforcing agent into media of the media pack.

17. The method of claim 6 , wherein the reinforcing agent extends at least 0.100 inch into the filter media pack from the corresponding face.

18. The method of claim 6 , wherein the reinforcing agent is impregnated into the media of the filter media pack which forms a substrate, the reinforcing agent extends through the media prior to the step of hardening such that the reinforcing structure is comprised of a matrix of the hardened reinforcing agent and the media substrate.

19. A method of providing reinforcing of a media pack comprising:
forming a media pack to have an inlet face and an outlet face:
applying a reinforcing agent to the media pack, the reinforcing agent being applied in a flowable state;
hardening the reinforcing agent to form a reinforcing structure being a composite structure comprising the reinforcing agent impregnated into the filter media such that the filter media forms a substrate and the reinforcing agent forms a hardened matrix to reinforce the media pack;
wherein the media pack is z-media having a plurality of adjacent layers of fluted filter media defining the inlet face and the outlet face, each layer including a corrugated sheet and a facer sheet attached to the corrugated sheet to form a plurality of inlet and outlet flutes extending between the inlet and outlet faces; and
wherein the inlet flutes are open proximate the inlet face and closed proximate the outlet face by outlet end sealant and the outlet flutes are closed proximate the inlet face by inlet end sealant and open proximate the outlet face, the reinforcing agent being different than the inlet end sealant and outlet end sealant.

20. The method of claim 19 , wherein the reinforcing agent is applied proximate to at least one of the inlet face and the outlet face.

21. The method of claim 19 , wherein the inlet and outlet end sealant have a higher viscosity than the reinforcing agent when applied.

22. The method of claim 19 , wherein the reinforcing agent overlaps, at least in part, at least one of the inlet end sealant and the outlet end sealant.

23. The method of claim 19 , wherein the reinforcing agent is applied such that the reinforcing agent attaches a portion of a corrugated sheet to an adjacent portion of an adjacent facer sheet that was not otherwise attached by either the inlet or outlet end sealant.

24. The method of claim 23 , wherein the reinforcing agent is axially located adjacent at least one of the inlet and outlet end sealant.

25. A method of providing reinforcing of a media pack comprising:
forming a media pack to have an inlet face and an outlet face:
applying a reinforcing agent to the m

Assignees

• Merritt Steven J
• Krull Timothy L
• Baldwin Filters Inc

Inventors

• Merritt Steven J
• Krull Timothy L

Classifications

• B01D2239/0464

  Impregnants · CPC title

• B01D2275/50

  Stabilised filter material, stabilised by, e.g. structuring, calendering · CPC title

• B01D46/527 Primary

  in wound arrangement · CPC title

• B01D46/525 Primary

  which comprises flutes · CPC title

• B01D46/0001

  Making filtering elements · CPC title