| 摘要 |
<p>A compressible layer (5) used in forming a printing blanket (1) or a printing cushion is made to have a uniform compressibility factor over its useful life. This is accomplished by evenly dispersning both closed and open soluble cell structures in a binder to form a compound and curing the resilient compound onto substrates (2, 3). A compressible layer may also be made without a backing if a suitable amount of the compound is laid down and cured to create a flexible mat. Alternatively, compound may be laid onto a release liner, cured and then adhered to a substrate. The closed cells typically used are phenolic microspheres although other suitable structures may be substituted. They may also be formed by mechanical foaming or with decomposable materials. The open cells are created by the use of a soluble material such as salt although other suitable materials may be used. The soluble material is removed from the layer after curing by leaching out the salt or using a suitable solvent to dissolve the other soluble materials that may be used.</p> |
