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导致硅胶辊膨胀和收缩的原因是什么

硅胶辊在使用过程中经常会出现膨胀或收缩,这严重影响了印刷质量。膨胀和收缩产生的原因多种多样,接下来小编为您详细介绍一下吧!
我公司经研究发现,橡胶和接触媒介之间的相互作用是导致硅胶辊膨胀和收缩的根本原因。膨胀与收缩是胶辊的胶质与印刷机上接触媒介的化学反应。反应过程中,印刷机上媒介中的物质会溶入胶质中,胶质中的成分也会释放到媒介中。相同极性的物质互相溶解,极性不同的物质则相互抵制。胶辊中的橡胶只含C、H和O微粒,它们会在相同无极性的油中膨胀,在有极性的液体中收缩。
无论硅胶辊是膨胀,还是收缩,都会对印刷过程造成很大的影响,因此胶辊在加工过程中要用到非常精密的机器和长时间的处理过程。

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