METHOD OF MANUFACTURING FIBER-REINFORCED LAYER FOR CONVEYOR BELT AND FIBER-REINFORCED LAYER FOR CONVEYOR BELT

PROBLEM TO BE SOLVED: To provide a method of manufacturing a fiber-reinforced layer for a conveyor belt, which prevents the weft from being disturbed by securing superior trough property and buckling resistance to increase the strength thereof in the warp direction, and also to provide the fiber-reinforced layer for a conveyor belt.SOLUTION: This fiber-reinforced layer 1 is formed in a ply structure using polyketone fibers for the warp 2 thereof. Where the fineness of the warp 2 is D1 (dtex) and the number of upper strands is T (turns/10 cm), an upper stand factor K=TxD1is 1,000 to 2,400. The weft 3 of the fiber-reinforced layer is disposed in a density of 5-15 pieces/5 cm. The strength of the fiber-reinforced layer 1 in the weft direction is 150-350 N/cm. In the heat treatment of the fiber-reinforced layer 1 dipped in an adhesive liquid, a tension of 0.035 cN/dtex or below is applied thereto in the warp direction, the lateral both ends thereof are held by clamps 8, and the movement thereof in the warp direction is restrained, whereby the bending of the texture thereof after the heat treatment is 0-0.5%.