Power transmission belt

Patent metadata

Field	Value
Publication number	US-10267380-B2
Application number	US-201515301017-A
Country	US
Kind code	B2
Filing date	Mar 30, 2015
Priority date	Apr 3, 2014
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A power transmission belt and a method for manufacturing said belt. The belt includes: a backing layer made of a material with elastomeric behavior; a ventral layer made of a material with elastomeric behavior; a mechanical reinforcement means inserted between the backing layer and the ventral layer comprising a film with thermoplastic transformation surrounding the mechanical reinforcement means, said film comprising at least: a first component physically and/or chemically bonded to at least one component of the backing layer; a second component physically and/or chemically bonded to at least one component of the mechanical reinforcement means; and a third component physically and/or chemically bonded to at least one component of the ventral layer. The method for manufacturing said belt may advantageously use an anti-sticking means.

First claim

The invention claimed is:

1. A power transmission belt comprising:
a backing layer made in a material with an elastomeric behavior;
a ventral layer made in a material with an elastomeric behavior;
a mechanical reinforcement means interposed between the backing layer and the ventral layer;
a film with thermoplastic transformation surrounding the mechanical reinforcement means, said film comprising at least:
one first component physically and/or chemically bound with at least one component of the backing layer;
one second component physically and/or chemically bound with at least one component of the mechanical reinforcement means; and
one third component physically and/or chemically bound with at least one component of the ventral layer.

2. The belt according to claim 1 , wherein the backing layer is made in a material with elastomeric behavior based on alpha-olefin-ethylene or based on an olefin TPV and the first component of the film with thermoplastic transformation is selected from the group consisting of olefin homopolymers, olefin copolymers, polyethylene, LDPE, and HDPE.

3. The belt according to claim 1 , wherein the backing layer is made in a material with elastomeric behavior based on polybutadiene (BR) or based on styrene-butadiene copolymer (SBR) and the first component of the film with thermoplastic transformation is selected from the group consisting of styrene homopolymers, styrene copolymers, polystyrene-b-poly(ethylene-butylene)-b-polystyrene (SEBS), and polystyrene-b-polybutadiene-b-polystyrene (SBS).

4. The belt according to claim 1 , wherein the backing layer is made in a material with elastomeric behavior based on polyisoprene or based on natural rubber (NR) and the first component of the film with thermoplastic transformation is polystyrene-b-polyisoprene-b-polystyrene (SIS).

5. The belt according to claim 1 , wherein the backing layer is made in a material with elastomeric behavior based on a copolymer with ether and ester blocks (COPE) and the first component of the film with thermoplastic transformation is also a copolymer with ether and ester blocks (COPE).

6. The belt according to claim 1 , wherein the backing layer is made in a material with elastomeric behavior based on a copolymer with ether and amide blocks (COPA) and the first component of the film with thermoplastic transformation is also a copolymer with ether and amide blocks (COPA).

7. The belt according to claim 1 , wherein the mechanical reinforcement means is made in a material selected from the group consisting of a polyamide, a polyester, glass fibers a material based on cellulose, and the second component of the film with thermoplastic transformation comprises a material selected from among a polymer containing at least one olefin constitutive unit and a reactive function selected from among a maleic anhydride function, a glycidyl methacrylate function, an acrylic acid function.

8. The belt according to claim 7 , wherein the olefin constitutive unit of said polymer contains at least one olefin constitutive unit and a reactive function selected from among a maleic anhydride function, a glycidyl methacrylate function, an acrylic acid function is ethylene.

9. The belt according to claim 1 , wherein the mechanical reinforcement means is made in polyamide and the second component of the film with thermoplastic transformation comprises a copolymer with ether and amide blocks (COPA).

10. The belt according to claim 1 , wherein the mechanical reinforcement means is made in polyester and the second component of the film with thermoplastic transformation comprises a copolymer with ether and ester blocks (COPE).

11. The belt according to claim 1 , wherein the ventral layer is made in a material with elastomeric behavior based on alpha-olefin-ethylene or based on olefin TPV and the third component of the film with thermoplastic transformation is selected from the group consisting of olefin homopolymers, olefin copolymers, polyethylene, LDPE, and HDPE.

12. The belt according to claim 1 , wherein the ventral layer is made in a material with elastomeric behavior based on polybutadiene (BR) or based on styrene-butadiene copolymer (SBR) and the third component of the film with thermoplastic transformation is selected from the group consisting of styrene homopolymers, styrene copolymers, polystyrene-b-poly(ethylene-butylene)-b-polystyrene (SEBS), and polystyrene-b-polybutadiene-b-polystyrene (SBS).

13. The belt according to one of claim 1 , wherein the ventral layer is made in a material with elastomeric behavior based on polyisoprene or based on natural rubber (NR) and the third component of the film with thermoplastic transformation is polystyrene-b-polyisoprene-b-polystyrene (SIS).

14. The belt according to claim 1 , wherein the ventral layer is made in a material with elastomeric behavior based on a copolymer with ether and ester blocks and the third component of the film with thermoplastic transformation is also a copolymer with ether and ester blocks (COPE).

15. The belt according to claim 1 , wherein the ventral layer is made in a material with elastomeric behavior based on a copolymer with ether and amide blocks (COPA) and the third component of the film with thermoplastic transformation is also a copolymer with ether and amide blocks (COPA).

16. The belt according to claim 1 , wherein the backing layer and the ventral layer are made in a material with elastomeric behavior with an identical basis.

17. The belt according to claim 16 , wherein:
the backing layer and the ventral layer are made in a material with elastomeric behavior based on alpha-olefin-ethylene;
the mechanical reinforcement means is made in polyamide; and
the film with thermoplastic transformation comprises:
a first component formed with an olefin homopolymer or copolymer,
a second component formed with a copolymer with ether and amide blocks (COPA) and/or with a polymer containing at least one olefin constitutive unit and a reactive function selected from among a maleic anhydride function, a glycidyl methacrylate function, an acrylic acid function; and
a third component formed with an olefin homopolymer or copolymer.

18. The belt according to claim 17 , wherein the polyamide is selected from among: PA66, PA46, PA6, aromatic polyamide.

19. The belt according to claim 1 , wherein the mechanical reinforcement means is one of a multi-wire cable, a woven, a non-woven or a knit.

20. The belt according to claim 1 , wherein the bond between the film with thermoplastic transformation and at least one of the backing layer or of the ventral layer involves a chemical bond by joint cross-linking.

21. The belt according to claim 16 , comprising:
a complementary film with thermoplastic transformation, covering the ventral layer and a textile layer covering the complementary film, the complementary film including:
a first component physically and/or chemically bound with at least one component of the ventral layer; and
a second component physically and/or chemically bound with at least one component of the textile layer.

22. The belt according to claim 21 , wherein the bond between the complementary film and the ventral layer involves a chemical bond by joint cross-linking.

Assignees

• Hutchinson

Inventors

• Franchini Elsa
• Rognon Julie

Classifications

• F16G1/10

  with textile reinforcement · CPC title

• F16G1/28

  with a contact surface of special shape, e.g. toothed · CPC title

• F16G1/16

  with reinforcement bonded by the plastic material {(making thereof B32B)} · CPC title

• F16G1/06 Primary

  made of rubber (F16G1/28 takes precedence {; consisting of several parts F16G1/22}; making thereof B29D29/00 ) · CPC title

• F16G1/08

  with reinforcement bonded by the rubber · CPC title