Patent ID: 9103068
Filing Date: 2015-08-11
Classification: B60C,D07B

Abstract:
1. A metal cord having two layers (Ci, Ce) of 3+N construction, rubberized in situ, comprising an inner layer (Ci) formed from three core wires of diameter d the content of filling rubber in the cord is between 5 and 30 mg per g of cord, and wherein said cord has the following characteristics (d 0.20<d 0.20<d p 5<p 10<p wherein d wherein substantially no filling rubber is present on a periphery of the cord, wherein the filling rubber is uniformly distributed inside and around the inner layer, wherein, in an air permeability test according to ASTM D2692-98, the cord has an average air flow rate of less than 2 cm wherein the filling rubber is uniformly distributed inside and around the inner layer by twist balancing.