Stability beam layout made from hybrid cords for elastomeric products, in particular for the belt of vehicle pneumatic tyres

摘要

The reinforcement layer is made of hybrid cords which are arranged parallel to one another inside the layer and are composed of two twisted textile yarns made of certain materials, where ends of both yarns are twisted with each other and the former twisted textile yarn is a polyketone yarn. The latter twisted textile yarn is an organic synthetic fiber. The twist number and refinement of the former yarn is different from latter yarn. The latter yarn is polyester yarn or polyamide yarn. The reinforcement of reinforcement layer has polyethylene terephthalate and polyethylene naphthalate.