| 摘要 |
<p>a substantially cylindrical core and a cover overlying the adhesive layer. The cover comprises a polymeric top stock layer. The top stock layer comprises a mixture of a polymeric material and at least one of a piezochromic material and a thermochromic material. In this configuration, the pressure and/or temperature experienced by the roll cover at any location thereon can be determined visually, without the need for external equipment.</p> |
