Method of adhering and conveyor belt

1. A conveyor belt obtained by bonding together conveyor belts to be adhered using an adhesive rubber, wherein

the conveyor belts to be adhered include a rubber composition containing an ethylene-α-olefin copolymer, an organic peroxide (X1), and carbon black (Y1), the organic peroxide (X1) being contained in an amount of from 0.011 to 0.020 molar equivalents relative to the ethylene-α-olefin copolymer in the conveyor belts to be adhered,

the adhesive rubber includes a rubber composition containing an ethylene-α-olefin copolymer, an organic peroxide (X2), and carbon black (Y2), the organic peroxide (X2) being contained in an amount of from 0.017 to 0.022 molar equivalents relative to the ethylene-α-olefin copolymer in the adhesive rubber, and

a content ratio (X2/X1) of the organic peroxide (X2) to the organic peroxide (X1) is from 1.20 to 2.00.

2. The conveyor belt according to claim 1 , wherein a content of the carbon black (Y1) in the conveyor belts to be adhered is from 40 to 60 parts by mass relative to 100 parts by mass of the ethylene-α-olefin copolymer in the conveyor belts to be adhered,

a content of the carbon black (Y2) in the adhesive rubber is from 30 to 50 parts by mass relative to 100 parts by mass of the ethylene-α-olefin copolymer in the adhesive rubber, and

a difference (Y1-Y2) in the content between the carbon black (Y1) and the carbon black (Y2) is from 0 to 10 parts by mass.