| 摘要 |
PROBLEM TO BE SOLVED: To prevent the decrease in volume resistivity with the passage of time by making a product from a resin composition containing polyolefin modified with unsaturated carboxylic acid or its derivative and carbon black and specifying volume resistivity. SOLUTION: This seamless belt is composed of a resin composition of polyolefin modified with unsaturated carboxylic acid or its derivative and carbon black. In the modified polyolefin, the content of unsaturated carboxylic acid or its derivative is preferably 0.0005-3wt.%. The ratio between the sum of modified polyolefin and unmodified polyolefin and carbon black is preferably 70-98: 30-2wt.%. Below this range, conductivity is not enough; above the range, product appearance and material strength are deteriorated. Volume resistivity is made 1×10<0> -1×10<15>Ωcm. The composition and additional components are kneaded by an extruder, etc., to make compounded pellets to be processed. |
