Methods of manufacturing a belt include, at least, laying up a plurality of cords of a belt build on a mandrel, laying up a tape adhesive on an inner surface of the plurality of cords, laying up a cushion layer on an opposing side of the tape adhesive, and vulcanizing the belt build in a profile-forming mold, where the tape adhesive is a vulcanizable rubber which is devoid carbon black. The methods may further include laying up an outer tape adhesive before the laying up of the plurality of cords, and in some aspects, tension layer is laid up before laying up the outer tape adhesive. In some other methods, the tension layer is laid up before the laying up of the plurality of cords. The methods may further include partially or fully wrapping the belt with a belt wrap prior to vulcanizing the belt.

A method for manufacturing a cogged V-belt having a plurality of cogs, includes: an unvulcanized sleeve formation step of forming an unvulcanized sleeve by laminating a plurality of unvulcanized rubber sheets that contain at least an unvulcanized rubber sheet for a compression rubber layer and an unvulcanized rubber sheet for a tension rubber layer; a vulcanized sleeve formation step of forming a vulcanized sleeve by vulcanizing the unvulcanized sleeve; and a cog formation step of forming the plurality of cogs on the compression rubber layer after the vulcanized sleeve forming step.

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.

Provided is a power transmission V-belt containing: a rubber layer; a cord buried in the rubber layer along the belt circumferential direction; and at least one reinforcing layer buried in the rubber layer, in which the reinforcing layer contains reinforcing fiber filaments having the same length as a belt width; and contains no fibers intersecting with the belt width direction, or contains the fibers intersecting with the belt width direction in a weight per unit area of 30% or less of the reinforcing fiber filaments, in which the reinforcing layer has a structure in which the reinforcing fiber filaments are in a non-twisted state, are oriented in the belt width direction, and are spread and bonded in a sheet shape, and in which the reinforcing layer has a thickness of 0.05 mm to 0.5 mm.

The present invention relates to a frictional power transmission belt containing a compression layer having a power transmission surface, at least a part of which is capable of coming into contact with a pulley, in which the compression layer contains a polymer component and a polyvinyl alcohol-based resin.

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.

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.

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.

Provided is a power transmission V-belt containing: a rubber layer; a cord buried in the rubber layer along the belt circumferential direction; and at least one reinforcing layer buried in the rubber layer, in which the reinforcing layer contains reinforcing fiber filaments having the same length as a belt width; and contains no fibers intersecting with the belt width direction, or contains the fibers intersecting with the belt width direction in a weight per unit area of 30% or less of the reinforcing fiber filaments, in which the reinforcing layer has a structure in which the reinforcing fiber filaments are in a non-twisted state, are oriented in the belt width direction, and are spread and bonded in a sheet shape, and in which the reinforcing layer has a thickness of 0.05 mm to 0.5 mm.

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.