Flat Press to Fix Imprint Hairs

When the product is printed on a flat press, the lining of the imprinting is not tight except for the flat lining. The main reason is that the machine is used for a long time, and the lack of refueling results in serious wear of the main shaft sleeve at the pressure hinge, which exceeds the allowed tolerance of the sleeve. Due to the large gap of the dynamic fit, transient chattering occurs during the press-combination, which causes the blot to transfer to the hair on the paper, especially the left and right sides and the upper part of the word line, which seriously affect the quality of the product and cause the plate wear. The best solution is to replace the sleeve, the problem can be fundamentally resolved, but the sleeve with the gap is not too large imprinted hair, in practice to find a way to exclude, only for their reference.

First, the scroll method

The so-called paper roll method uses 78-80g/m2 paper to roll it into a paper roll with a diameter of about 0.6-0.8cm. A cotton rope is worn in the middle, and after pulling it, it is buckled on the paper-stopping pile and pulled separately. Near the hairs, avoiding the imprinted area of ​​the printed paper, when the printing is pressed, since the first contact with the paper roll and then contact with the printing plate, the instantaneous flutter can be eased, so as to solve the hairiness caused by printing.

Second, the method of transfer

The so-called transfer method, generally speaking, due to the imprinting machine is a flat angle contact angle, the imprinting hair occurs in the upper and left and right sides, if the imprinting hair is More serious, if allowed, the upper and lower sides can be cut The cut portion is provided with an anti-line and book edge, and the method of solving the problem is to move the imprinted hairs out of the finished product.