Similarities: 

Polyester stiff cord and Polyester soft cord if using the same raw material processing, the basic characteristics of the physics of the cord is the same; Of difference: cord cutting, cord fiber bundle, as a result of chemical treatment after cutting the still glue together with each other, so after cutting tape section after friction is not easy to fall off 

The difference between: 

(1) the breaking elongation and tensile strength of Polyester stiff cord slightly below the Polyester soft cord. 

(2) the Polyester stiff cords of glue is higher than Polyester soft cords.