Polymer-based reinforcement material and tire cord compositions and methods of production thereof
View Patent ↗The subject matter herein is directed to a polymer-based cap ply reinforcement material that has a shrinkage component, wherein the reinforcement material is treated such that the shrinkage component increases at least about 10% over a reference shrinkage component of a reference polymer-based reinforcement material. The subject matter herein is further directed to a method of producing a product comprising a polymer-based cap ply reinforcement material, wherein the method includes: a) providing a reference polymer-based cap ply reinforcement material having a reference shrinkage component; b) providing a polymer-based cap ply reinforcement material having a shrinkage component; c) treating the polymer-based cap ply reinforcement material such that the shrinkage component increases at least about 10% over the reference shrinkage component of the reference polymer-based cap ply reinforcement material.
1. A product, comprising:
a modified high modulus low shrink polyester-based cap ply reinforcement material, said cap ply reinforcement material located within a tire, and said material having:
a shrinkage component of 3.3% to 4.5% free shrinkage at a simulated tire cure temperature of 177° C.;
a stretch component from 1.5% to 6%; and
an EASL of less than 5.5% measured at a ((nominal reinforcement denier) divided by 100) pounds.
2. The product of claim 1 , wherein the shrinkage component is lese 4.4% free shrinkage.
3. The product of claim 1 , where said polyester-based cap ply reinforcement material is comprised of multifilament fibers.