公开(公告)号：US3900627A

公开(公告)日：1975-08-19

申请号：US31498372

申请日：1972-12-14

Applicant: PIRELLI

Inventor： ANGIOLETTI ATTILIO ,  BROLLO AURELIO

IPC: B29D29/06 ,  B65G15/34 ,  B65G15/36 ,  B32B5/12

CPC classification number: B65G15/34 ,  B29D29/06 ,  B65G15/36 ,  B65G2201/06 ,  Y10T428/24132 ,  Y10T428/2495

Abstract: A natural or synthetic rubber or other elastomeric or plastic conveyor belt is reinforced with an embedded fabric layer disposed on each side of at least one layer of coplanar substantially parallel cords having their axis extending along the greatest dimension of the belt. A layer of elastomer or plastic is interposed between each fabric layer and the adjacent layer of cords and the ratio between the thickness of each layer of elastomer or plastic and the diameter of one cord is smaller than 0.166 and the ratio between the distance between two adjacent cords, measured between their axes, and the diameter of one cord is from 1.5 to 6, so as to obtain an optimum flexibility and fatigue resistance.