| 摘要 |
<p>The invention relates to a zinc dust primer system which renders possible a mass production working of metal sheets by noncutting processes. The said primer system consists of a lower or bottom layer containing the actual zinc dust primer, and a covering layer containing a substance promoting sliding and a binder. A suitable substance promoting sliding is, in particular, graphite. The system of the invention is especially applicable in the automobile, shipbuilding and packing industries and in the construction of steel furniture. It is of special interest in the case of the coil-coating process.</p> |
