Patent ID: 6358610
Filing Date: 2002-03-19
Classification: D02G,Y10T

Abstract:
A hose reinforcing filament cord, comprising a polyester multiple filament yarn single-twisted at about 3-150 turns per meter into a twisted cord, said cord having a coating comprising an aromatic polyepoxide and a condensation product of resorcin-formaldehyde (A) and a rubber latex (B) deposited thereon, said cord satisfying all of the following properties (a) to (c):(a) a coefficient of dynamic friction as measured between said cord and a smooth metal surface, of about 0.15 to 0.35, (b) a variation of coefficient of dynamic friction, between said filament cord and said smooth metal surface, of about 0.05 or less, and (c) a rubber covering amount remaining on said cord after a standard cord stripping test of about 3 wt % or more when said standard cord stripping test comprises the steps of winding a filament cord around an aluminum sheet, sticking a chlorinated butyl rubber or EPDM rubber to both sides of said aluminum sheet, press mold-vulcanizing said aluminum sheet, cooling said aluminum sheet, stripping said filament cord from said rubber with an angle of 90Â° between said filament cord and said rubber, and determining said rubber covering amount using the following formula: (Aâˆ’B)/(Câˆ’B)Ã—100 wherein A designates the absolute dry weight of the adhering rubber and the deposited treating agents, B designates the absolute dry weight of the deposited treating agents, and C designates the absolute dry weight of the filament cord.