Textured sorbent sheets, assemblies containing them, and molds for making same

Patent metadata

Field	Value
Publication number	US-12318758-B2
Application number	US-202016935906-A
Country	US
Kind code	B2
Filing date	Jul 22, 2020
Priority date	Jul 22, 2019
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

Textured sorbent material sheets provide for enhanced performance in vapor adsorbing applications over conventional sheets, systems, canisters and other emissions control equipment. The textured sorbent material sheets can be formed as part of a small, lightweight system, canister, or can be integrated into a fuel tank.

First claim

What is claimed is:

1. A textured sorbent material sheet, comprising:
an activated carbon sorbent material and a binder, the textured sorbent material sheet defining an upper surface and a lower surface wherein one of the upper surface and the lower surface comprises a texture defined by a series of hills and valleys and formed by compression, and a different one of the upper surface and the lower surface comprises a pattern,
wherein the texture comprises one of a diamond texture, a triangular texture, or a dimpled texture,
wherein the textured sorbent material sheet has an ASTM BWC of about 7 g/100 mL to about 30 g/100 mL, and
wherein a depth of the pattern is less than a depth of the texture.

2. The textured sorbent material sheet of claim 1 , wherein the textured sorbent material sheet has a thickness measured at a valley of about 0.1 mm to about 1.0 mm.

3. The textured sorbent material sheet of claim 1 , wherein the textured sorbent material sheet has a thickness measured at a hill or peak of about 1.0 to about 1.5 mm.

4. The textured sorbent material sheet of claim 1 , wherein the distance from a tip of a hill to the bottom of a valley is about 1.0 mm to about 0.1 mm.

5. The textured sorbent material sheet according to claim 1 , wherein the hills are defined as uncompressed portions and the valleys are defined as compressed portions.

6. A textured sorbent material sheet product, comprising:
at least two textured sorbent material sheets in accordance with claim 1 , and
wherein each textured sorbent material sheet is stacked and arranged such that adjacent upper and lower surfaces of the separate sheets are substantially parallel and are aligned to allow fluid flow at least between the adjacent upper and lower surfaces.

7. The textured sorbent material sheet product of claim 6 , wherein at least one of the textured sorbent material sheets are configured as being flat, wound in a spiral cylinder, wound in an elliptical form, wound in an elongate rectangular bar, folded, laminated in an “S” shape, formed as concentric cylinders, formed as concentric ellipses, formed as a concentric rectangular bar, or as combinations of these forms.

8. The textured sorbent material sheet product of claim 6 , wherein the hills and valleys portions are present on adjacent sheets and are nested.

9. The textured sorbent material sheet product of claim 6 , wherein the hills and valleys portions are present on adjacent sheets and are not nested.

10. A rolled textured sorbent material sheet product, comprising:
a textured sorbent material sheet according to claim 1 ,
wherein the textured sorbent material sheet is spiral wound to form adjacent sheet layers which allow fluid flow around and between adjacent sheet layers.

11. The rolled textured sorbent material sheet product of claim 10 , wherein the rolled textured sorbent material sheet product has a generally cylindrical shape having a length that is greater than its diameter.

12. A vapor adsorbing canister, comprising:
the textured sorbent material sheet product of claim 8 , and
a housing at least partially encapsulating the textured sorbent material sheet product.

13. The vapor adsorbing canister of claim 12 , wherein the housing is flexible.

14. A vapor adsorbing canister, comprising,
a rolled textured sorbent material sheet product according to claim 10 , and
a housing at least partially encapsulating the rolled textured sorbent material sheet product.

15. A tank with integral vapor adsorption, comprising: a tank structure, and
at least one textured sorbent material sheet, wherein the textured sorbent material sheet comprises an activated carbon sorbent material and a binder, the textured sorbent material sheet defining an upper surface and a lower surface wherein at least one of the upper surface and the lower surface comprises a texture defined by a series of hills and valleys, and
at least one fastening device which fastens the textured sorbent material sheet to a surface of the tank that is not regularly immersed in volatile liquids contained within the tank.

16. The tank with integral vapor adsorption of claim 15 , wherein the fastening device is an adhesive layer which is formed between one surface of the textured sorbent material sheet and a wall of the tank.

17. An onboard refueling vapor recovery apparatus comprising the textured sorbent material sheet of claim 1 .

18. An onboard refueling vapor recovery apparatus comprising the rolled textured sorbent material sheet product of claim 10 .

19. An onboard refueling vapor recovery apparatus comprising the vapor adsorbing canister of claim 14 .

Assignees

• Calgon Carbon Corp

Inventors

• Greenbank Michael
• Skalyo Jeffrey J
• Smales Matthew P
• Tramposch Walter G

Classifications

• B01D53/0415 Primary

  Beds in cartridges · CPC title

• B01D2257/702

  Hydrocarbons · CPC title

• B01D2259/4516

  for fuel vapour recovery systems · CPC title

• B01D2259/4566

  for use in transportation means · CPC title

• B01J2220/66

  Other type of housings or containers not covered by B01J2220/58 - B01J2220/64 · CPC title