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我厂对原有正型胶的复印工艺进行了删改,简化了工艺,但却大大提高了正型胶的粘附力,使Fe_2O_3版复制的成品率稳定在80％以上。我们采取的主要方法是: 1.控制涂胶前的湿度,防止版面附着水汽。将清洗烘烤后的版,迅速地置于湿度控制在15～30％的涂胶台内缓缓冷却,以克服版温与室温温差过大、冷却过快、在表面形成的微细水汽,并在版没有完全冷却前进行涂胶(特别是在寒冷季节),以满足版在快速转动下大量散热的需要,从而避免版面急骤降温而形成的水汽,克服这些水汽的形成,是防止正胶版钻蚀的重要因素。 2.提高烘干温度,增长烘干时间。烘干温度采用90～100℃,时间2～3小时。在此条件下,胶体的粘附力随时间的增长而提高。经过多次试验证明,这是一种正比的线
I plant on the original positive plastic copy process was modified to simplify the process, but it has greatly enhanced the positive plastic adhesion, the Fe_2O_3 version of the replication rate of stability in more than 80%. The main methods we take are: 1. Control the humidity before glueing to prevent the water vapor from attaching to the plate. Will clean the baked version, quickly placed in humidity control 15 ~ 30% of the coating station slowly cooling to overcome the temperature and room temperature difference is too large, too fast cooling, the formation of micro-water vapor on the surface and Coating is not done before the plate is completely cooled (especially in the cold season) to meet the needs of a large number of radiators under rapid rotation, thus avoiding the vapor formed by the rapid cooling of the plate, overcoming the formation of these water vapor, An important factor in corrosion. 2. Improve the drying temperature, increase drying time. Drying temperature used 90 ~ 100 ℃, time 2 ~ 3 hours. Under these conditions, the colloidal adhesion increases with time. After many tests proved that this is a direct line