Abrasion-detection type conveyor belt and manufacturing method thereof
Provided are an abrasion-detection type conveyor belt and a manufacturing method thereof. A polymer composition ratio of is set to 40-60% of styrene-butadiene rubber (SBR) and 60-40% of natural rubber (NR), and an adhesive strength between a cover rubber layer and an abrasion-detection color layer is set to 13 kN/m (33 kgf/inch). As compared to the existing product, material properties of the abrasion-detection color layer are improved to extend the available life of the abrasion detection type conveyor belt. The abrasion-detection type conveyor belt is cost-effective, simplifies a belt line, and reduces an inspection time.
1. An abrasion-detection type conveyor belt comprising:
a cover rubber layer including a top cover rubber layer, an intermediate cover rubber layer, and a bottom cover rubber layer;
carcasses inserted into the cover rubber layer, the carcasses having wavelike shapes; and
an abrasion-detection-color layer disposed between the intermediate cover rubber layer and the top cover rubber layer,
wherein the abrasion-detection color layer is formed by setting a polymer composition ratio to 40%-60% of styrene-butadiene (SBR) and 60%-40% of natural rubber (NR).
2. The abrasion-detection type conveyor belt according to claim 1 , wherein an adhesive strength between the cover rubber layer and the abrasion-detection color layer is set to be more than or equal to 13 kN/m (33 kgf/inch).
3. The abrasion-detection type conveyor belt according to claim 1 , wherein the abrasion-detection color layer has at least one of material properties selected from a hardness (Shore-A) of 59 to 61, an elongation rate of 610% to 700%, a tensile strength of 13.5 MPa to 14.0 MPa, a specific gravity of 1.36 g/cm 3 to 1.46 g/cm 3 , and an abrasion amount of 300 mm 3 to 320 mm 3 .