Kenaf reinforced rubber for power transmission belts

Patent metadata

Field	Value
Publication number	US-9255201-B2
Application number	US-201213692585-A
Country	US
Kind code	B2
Filing date	Dec 3, 2012
Priority date	Dec 12, 2011
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

An elastomeric composition and a power transmission belt based on the elastomeric composition, wherein the composition includes kenaf fiber.

First claim

What is claimed is:

1. A power transmission belt comprising an elastomeric belt body and a helically wound tensile member embedded in the belt body, said elastomeric belt body comprising a cured elastomeric composition comprising kenaf fiber;
wherein the elastomeric composition comprises a polychloroprene base elastomer; and
wherein the elastomeric composition comprises a second type of fiber, wherein the second type of fiber is short aramid fiber.

2. The belt of claim 1 wherein said kenaf fiber comprises bast fiber with average fiber diameter of about 20 microns.

3. The belt of claim 1 wherein said kenaf fiber is present in the elastomeric composition at a level of 1 to 50 parts per hundred of base elastomer.

4. The belt of claim 2 wherein said kenaf fiber is chopped bast fiber with average fiber length of 1 to 3 mm.

5. The belt of claim 3 wherein said composition further comprises a compatibilizer that aids dispersion or adhesion of the kenaf fiber in the base elastomer.

6. A power transmission belt comprising an elastomeric belt body, a tensile cord, and a sheave contact portion; said elastomeric belt body comprising a cured elastomeric composition comprising kenaf fiber;
wherein the elastomeric composition comprises a polychloroprene base elastomer; and
wherein the elastomeric composition comprises a second type of fiber, wherein the second type of fiber is short aramid fiber.

7. The power transmission belt of claim 6 in the form of a V-belt, a toothed belt, or a multi-V-ribbed belt.

8. The belt of claim 7 wherein said kenaf fiber comprises bast fiber.

9. The belt of claim 8 wherein said kenaf fiber is present in the elastomeric composition at a level of 1 to 50 parts per hundred parts of base elastomer.

10. The belt of claim 9 wherein said kenaf fiber is chopped bast fiber with average fiber length of 1 to 3 mm and with average fiber diameter of about 20 microns.

11. The belt of claim 10 wherein said composition further comprises a compatibilizer that aids dispersion or adhesion of the kenaf fiber in the base elastomer.

Assignees

• Gates Corp
• Gates Corp

Inventors

• Feng Yuding

Classifications

• F16G1/08 Primary

  with reinforcement bonded by the rubber · CPC title

• C08L21/00

  Compositions of unspecified rubbers · CPC title

• F16G5/06

  with reinforcement bonded by the rubber · CPC title

• C08L97/02 Primary

  Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} · CPC title