| 摘要 |
<p>A self-levelling under-packing for printing presses, in particular offset presses, includes at least one polyester-based layer and at least one polyurethane elastomer layer joined inseparably together. The polyester-based layer may be between 50 mum and 350 mum and the polyurethane elastomer layer may be between 20 mum and 1000 mum. The polyester-based layer may be adhesive-coated on one side, in which case the thickness, including the adhesive, may be between 40 and 100 mum, with the adhesive thickness not exceeding about 5 mum.</p> |
