A band or belt designed as an elongate bearing, traction or drive element running around rollers or pulleys and made of an elastomer material, and preferably provided with embedded reinforcing elements or tension members extending in the longitudinal direction of the band or belt, having the following features: the band or the belt has one or more elongate tubular receptacles embedded in the elastomer material, in the cavity of which electronic components are arranged, preferably sensors, signal processing or control devices and/or transmission devices, the tubular receptacles are embedded in the elastomer material in such a way that their longitudinal axis or the direction of their greatest extent is oriented substantially transversely to the main bending direction of the band or belt.

belts and methods of manufacturing the same are described herein. The belt generally includes a base layer having a plurality of surface features (e.g., ribs or teeth) formed on a front surface of the base layer, and a stretched surface layer disposed on and conforming to the surface features. The stretched surface layer may comprise a knit fabric material that is from about 3 to about 10 wt. % elastomeric fiber or yarn and from about 90 to about 97 wt. % non-elastomeric yarn or fiber. The stretched surface layer is stretched over the front surface of the base layer such that the surface density of the stretched surface layer on the front surface is from about 100 to about 150 g/m.sup.2. Manufacturing methods for producing the belt with stretched surface layer generally includes disposing the surface layer on a planar front surface of the base layer and pressing a mold into the front surface of the base layer to thereby form a plurality of surface features in the front surface of the base layer. The molding step is carried out such that surface density of the surface layer on the front surface is in the range of from about 100 to about 150 g/m.sup.2 and such that the surface layer is stretched in at least two directions.

A composite comprises: a reinforcing element (10), an adhesive layer (14) made from an adhesive composition, and an elastomeric body made from an elastomeric matrix comprising an ethylene/alpha-olefin type elastomer and/or a polychloroprene elastomer. The adhesive composition comprises a resin based: on a polyphenol comprising an aromatic ring bearing two hydroxyl functions in the meta position relative to one another, the two positions ortho to one of the hydroxyl functions being unsubstituted; and/or on a monophenol comprising a six-membered aromatic ring bearing a single hydroxyl function, the two ortho positions being unsubstituted, or an ortho position and the para position being unsubstituted, and on a compound comprising an aromatic ring bearing two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function.

A frictional power transmission belt includes a tension layer forming a belt back surface, a compression rubber layer to be in contact with a pulley and frictionally engaged with the pulley, and a tension member embedded between the tension layer and the compression rubber layer along a belt length direction. The compression rubber layer has a surface to be in contact with the pulley. At least a part of the surface is coated with a fiber layer via a fiber/resin mixture layer. The fiber/resin mixture layer contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature of a rubber forming the compression rubber layer. The fiber layer contains hydrophilic heat-resistant fibers having a softening point or a melting point higher than the vulcanization temperature and does not contain a resin component.

Methods of manufacturing a belt include laying up a first elastomeric layer of a belt build on a mandrel, laying up a tensile reinforcement layer on the first elastomeric layer, where the tensile reinforcement layer contains cords coated with a water based urethane compound, and laying up a second elastomeric layer on the first elastomeric layer and the tensile reinforcement layer. The belt build may be cured in a profile-forming mold, and afterward, cut to a predetermined belt width and/or length.

The present invention relates to a friction transmission belt having a friction transmission part, in which the friction transmission part is formed of a rubber composition containing an ethylene-α-olefin elastomer, a mineral-based filler and a surfactant.

An endless track for traction of a vehicle, such as a construction vehicle, an agricultural vehicle, a forestry vehicle or a military vehicle. The endless track has an enhanced elastomeric material curing capability. In one embodiment, each of a plurality of elastomeric projections of the endless track, such as guide/drive projections or traction projections, comprises elastomeric material defining a cavity to enhance a curing process during manufacturing of the endless track. The cavity may be shaped such that, during the curing process, a heat conductor positioned in the cavity conducts heat from the heat conductor to the elastomeric material of the projection.

The present invention relates to a process for adhering a textile material to an elastomer, the process comprising the steps of pretreating the textile material with at least one polyester of an α-β-unsaturated carboxylic acid, contacting the pretreated textile material with an unvulcanized elastomer, and vulcanizing the product obtained. The present invention additionally encompasses an elastomer article obtainable by this process and also the use of a polyester of an α-β-unsaturated carboxylic acid for improving the adhesion of a textile material to an elastomer.

A high efficiency belt having reduced bending stiffness while maintaining a high coefficient of friction. The belt includes a backing layer, a rib material layer, and cords embedded within, wherein the coefficient of friction of the high efficiency belt is greater than or equal to 0.03 mm/N times the bending stiffness for belts having a thickness in the range of from 2.6 mm to 4.2 mm. The belt can include a bending stiffness in the range of from about 30 N/mm to about 65 N/mm and an anisotropic modulus of elasticity ratio of between 1.1 and 5.0. Methods of manufacturing the high efficiency belt are also described and can include forming sheets of rib material with parallel aligned reinforcement fibers transverse to the direction of rotation of the high efficiency belt.

The invention relates to a drive belt for a traction mechanism drive, having a radially externally arranged top layer (4) composed of a fiber-containing elastomer or of an elastomer comprising a fiber mesh, having a radially centrally arranged tension member layer (6) composed of a wound tension strand or a plurality of circumferentially oriented tension strands, and a radially internally arranged substructure (8) composed of an elastomer, wherein at least one wedge-shaped rib is integrally formed in the substructure (8), a coating layer (10) composed of a circumferentially open fiber mesh being applied to the outer surfaces of said wedge-shaped rib. In order to prevent an abrupt change in the friction coefficient at the force-transmitting flanks of the ribs, provision is made for the circumferential ends (12, 14) of the coating layer (10) and a parting joint (16), which is filled by the elastomer of the substructure (8), between said circumferential ends (12, 14) of the coating layer (10) to be covered with a transverse strip (18) composed of a vulcanizable material, wherein said vulcanizable material has a reduced friction coefficient in relation to the elastomer of the substructure (8).