FRICTION DRIVE BELT Russian patent published in 2015 - IPC F16G5/06 C08J5/04 C08L23/16 C08L77/00 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in transmission gears. A belt for friction gears (10) comprises a glue part (12) of rubber and a compressive part (14) of rubber which is set lower than the glue rubber part (12). A cord (11) being an element for belt tension, is built-in in the glue rubber part (12). The glue rubber part (12) is fitted by an upper layer (12A) making up the upper side, and by a lower layer (12B) making up the lower side which is located around the cord (11). The upper layer (12A) and the lower layer (12B) are produced at the vulcanization of rubber mix containing high-viscous elastomer, for example, EPM or EPDM, and low-viscous elastomer with the Mooney viscosity of the latter being less than that of the high-viscous elastomer, and containing modified polyamide microfibers in the capacity of short fibres (21A, 21B) respectively. The short fibres (21A, 21B) are oriented in the width direction and longitudinal direction of the belt respectively.

EFFECT: better durability of a belt.

15 cl, 3 dwg, 3 tbl