In Jinan printing factory, what is the reason for the wrinkling of sample printing? That's what we want to understand. If the printed product is wrinkled, it will affect the overall effect. Only by understanding the reason of wrinkling in sample printing can we solve this problem better. Let's listen to the editor's summary of what he has learned.

　　事实上，印刷厂的纸张问题会导致印刷产品起皱，因为纸张纸张的水分分布不一样，如果纸张周围的水分大于中间部分，那么中间部分就会造成起皱现象。当纸张含水量过大时，由于压力的变形，而让产品起皱。

　　In fact, the paper problem in the printing factory will lead to the wrinkling of printing products, because the moisture distribution of paper is different. If the moisture around the paper is larger than the middle part, the middle part will cause wrinkling. When the paper moisture content is too large, due to the pressure of deformation, and wrinkle products.

　　样品印刷起皱的原因，不仅是纸张的问题，而且是印刷车间机械因素的调整，它引起的产品起皱也是很常见的。例如，在上料板上的上料压力不均匀，或纸张转移不适当，而压印滚筒表面沾有一些油墨过厚，会造成样品印刷起皱。

　　The reason of sample printing wrinkling is not only the problem of paper, but also the adjustment of the mechanical factors in the printing workshop. The product wrinkling caused by it is also very common. For example, the feeding pressure on the feeding plate is uneven, or the paper transfer is not appropriate, and the surface of the embossing roller is stained with some ink too thick, which will cause the sample printing to wrinkle.

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