ELASTIC ARTICLES, PARTICULARLY DRIVE BELTS, HAVING A TEXTILE OVERLAY AND A BONDING AGENT MADE FROM MELTABLE PLASTIC

• US 20110269589A1
• Filed: 06/10/2011
• Published: 11/03/2011
• Est. Priority Date: 12/10/2008
• Status: Active Grant

• Current Assignee: Contitech Antriebssysteme GmbH (Continental AG)
• Original Assignee: Contitech Antriebssysteme GmbH (Continental AG)
• Inventors: Schleicher, Marko, Gebhardt, Siegmar, Kanzow, Henning, Mahnken, Claus-Lueder
• Granted Patent: US 8,507,391 B2
• Time in Patent Office: Days
• US Class Current: 474/205
• CPC Class Codes: F16G 1/28 with a contact surface of special shape, e.g. toothed
• CPC Class Codes: F16G 5/20 with a contact surface of special shape, e.g. toothed
• CPC Class Codes: Y10T 442/30 Woven fabric [i.e., woven strand or strip material]
• CPC Class Codes: Y10T 442/3008 Woven fabric has an elastic quality
• CPC Class Codes: Y10T 442/3016 Including a preformed layer other than the elastic woven fabric [e.g., fabric or film or foil or sheet layer, etc.]
• CPC Class Codes: Y10T 442/3911 Natural or synthetic rubber sheet or film
• CPC Class Codes: Y10T 442/40 Knit fabric [i.e., knit strand or strip material]
• CPC Class Codes: Y10T 442/60 Nonwoven fabric [i.e., nonwoven strand or fiber material]
• CPC Class Codes: Y10T 442/601 Nonwoven fabric has an elastic quality
• CPC Class Codes: Y10T 442/679 Natural or synthetic rubber sheet or film

Abstract

An article has an elastic main element based on a vulcanizate having a wear-susceptible article surface. The article is primarily a drive belt (8) having a top layer (9) as the belt rear and a substructure (10) having a force transmission zone (13), wherein the force transmission zone and/or the top layer is/are supplied with a textile overlay (15), wherein the textile overlay is in turn additionally prepared with a plastic. The plastic is a bonding agent that is arranged between the main body and the textile overlay (15), wherein the plastic is supplied such that it melts during vulcanization and penetrates into the textile overlay while bonding, connected to a permanent adhesive bond between main body and textile overlay. A cotton fabric is used as the textile overlay (15), for example. The plastic is in the form of a film, for example, particularly in the form of a PE film. The primary purpose of use is the V-belt, ribbed V-belt (8) and the toothed belt.

Claims

1. An article having an elastic foundational body based on a vulcanizate having a wear-susceptible article surface, which is endowed with a textile cover ply, wherein in turn the textile cover ply is additionally at least partially endowed with a polymer, wherein the polymer is an adhesion promoter which is disposed between the foundational body and the textile cover ply, and wherein the polymer is constituted to melt in the course of vulcanization and to penetrate into the textile cover ply while undergoing co-crosslinking to become joined to a durable adhesive assembly formed by the foundational body and the textile cover ply.

2. The article as claimed in claim 1, wherein the article is a band, belt, strap, hose, air spring lobe, compensator or multilayered web.

3. The article as claimed in claim 1, wherein the textile cover ply is a woven fabric, a formed-loop knit fabric, a drawn-loop knit fabric or a nonwoven fabric.

4. The article as claimed in claim 1, characterized in that the entire textile cover ply is endowed with the polymeric adhesion promoter.

14. The article as claimed in claim 1, wherein the adhesion promoter forms an adhesion-promoting layer.

15. The article as claimed in claim 14, wherein the adhesion-promoting layer is a self-supporting film.

16. The article as claimed in claim 15, wherein the self-supporting film is formed of a compression-molded polymer.

17. The article as claimed in claim 14, wherein the adhesion-promoting layer is a supported film.

18. The article as claimed in claim 17, wherein the supported film is formed from a polymeric solution.

19. The article as claimed in claim 14, wherein the adhesion-promoting layer is from 0.01 mm to 2 mm in thickness.

20. The article as claimed in claim 19, wherein the adhesion-promoting layer is from 0.01 mm to 1 mm in thickness.

21. The article as claimed in claim 19, wherein the adhesion-promoting layer is from 0.02 mm to 0.1 mm in thickness.

22. The article as claimed in claim 1, wherein the adhesion promoter is a polyolefin.

23. The article as claimed in claim 22, wherein the adhesion promoter is polyethylene (PE) or polypropylene (PP).

24. The article as claimed in claim 1, wherein the adhesion promoter additionally incorporates particles to increase resistance to chemicals, oils and/or heat.

25. The article as claimed in claim 24, wherein the particles consist of silicone and/or polyurethane (PU) and/or of a fluorinated polymer.

26. The article as claimed in claim 25, wherein the fluorinated polymer is polyvinyl fluoride (PVF) and/or polyvinylidene fluoride (PVDF) and/or polytetrafluoroethylene (PTFE).

27. The article as claimed in claim 1, wherein the textile cover ply comprises fibers, yarns or monofils.

28. The article as claimed in claim 1, wherein the textile cover ply consists wholly or partly of cotton and/or polyester and/or polyamide.

29. The article as claimed in claim 28, wherein the cotton is untreated.

30. The article as claimed in claim 1, wherein the elastic foundational body is a vulcanizate based on a vulcanized rubber mixture containing at least one rubber component and mixture ingredients.

31. The article as claimed in claim 30, wherein the rubber component is selected from the group consisting of an ethylene-propylene copolymer (EPM), an ethylene-propylene-diene monomer copolymer (EPDM), (partly) hydrogenated nitrile rubber (HNBR), chloroprene rubber (CR), fluoro rubber (FKM), natural rubber (NR), styrene-butadiene rubber (SBR) or butadiene rubber (BR), which are used uncut or cut with at least one further rubber component.

32. The article as claimed in claim 31, wherein the rubber component is EPM or EPDM or an EPM-EPDM blend.

33. The article as claimed in claim 1, wherein the vulcanizate is crosslinked peroxidically.

34. The article as claimed in claim 31, wherein the at least on further component is selected from the group consisting of an ethylene-propylene copolymer (EPM), an ethylene-propylene-diene monomer copolymer (EPDM), (partly) hydrogenated nitrile rubber (HNBR), chloroprene rubber (CR), fluoro rubber (FKM), natural rubber (NR), styrene-butadiene rubber (SBR) or butadiene rubber (BR).

5. An article having an elastic foundational body based on a vulcanizate having a wear-susceptible article surface, wherein the article is a drive belt, comprising a top ply as belt backing and a substructure with a force transmission zone, wherein at least the force transmission zone is endowed with a textile cover ply, wherein in turn at least the textile cover ply, which acts in the force transmission zone, is additionally endowed with a polymer, wherein the polymer is an adhesion promoter which is disposed between the foundational body and the textile cover ply, and wherein the polymer is constituted to melt in the course of vulcanization and to penetrate into the textile cover ply while undergoing co-crosslinking to become joined to a durable adhesive assembly formed by the foundational body and the textile cover ply.

7. The article as claimed in claim 5, wherein the article is a V-belt.

8. The article as claimed in claim 7, wherein the textile cover ply of the V-belt is a woven fabric, a formed-loop knit fabric, a drawn-loop knit fabric or a nonwoven fabric.

9. The article as claimed in claim 7, wherein the textile cover ply embraces the top ply and the substructure with complete ensheathing of the V-belt.

10. The article as claimed in claim 9, wherein the entire textile cover ply is endowed with the polymeric adhesion promoter.

11. The article as claimed in claim 5, wherein the article is a V-ribbed belt.

12. The article as claimed in claim 5, wherein the article is a toothed belt.

13. The article as claimed in claim 11, wherein the textile cover ply of the V-ribbed belt or of the toothed belt is a woven fabric, a formed-loop knit fabric or a drawn-loop knit fabric.

6. An article having an elastic foundational body based on a vulcanizate having a wear-susceptible article surface, wherein the article is a drive belt, comprising a top ply as belt backing and a substructure with a force transmission zone, wherein at least the top ply is endowed with a textile cover ply, wherein in turn at least the textile cover ply, which acts on the top ply, is additionally endowed with a polymer, wherein the polymer is an adhesion promoter, which is disposed between the foundational body and the textile cover ply, and wherein the polymer is constituted such that it melts in the course of vulcanization and in the process penetrates into the textile cover ply while undergoing co-crosslinking to become joined to a durable adhesive assembly formed by the foundational body and the textile cover ply.