Two-component cord and method for molded power transmission belts

摘要

A belt having a tensile cord embedded in the belt, extending in a longitudinal direction and made up of two components: a tensile component and a sacrificed component. The sacrificed component may be broken into a plurality of discontinuous segments. The tensile component provides most of the reinforcement of the belt. The sacrificial component of the precursor cord protects the tensile component from excessive stretching during cord treating and winding, but breaks, melts, or yields during mandrel expansion during the belt molding process, thus preserving the stretchability of the tensile component.

主权项

1. A belt comprising a tensile cord embedded in the belt, extending in a longitudinal direction, said tensile cord comprising two components: a tensile component and a sacrificed component, said two components comprise yarns, the tensile component comprising one or more continuous filament yarns of high modulus fibers, and the sacrificed component comprising a second yarn which is broken into a plurality of yarn segments of substantially similar length distributed longitudinally throughout the tensile cord.