Songde is a leading enterprise in gravure printing and packaging equipment, mainly engaged in the research and development, production and sales of gravure printing machines and their complete sets of equipment. In 2009, Songde Company achieved an operating income of 202 million yuan and a net profit of 30,928,800 yuan. On the first day of trading, Songde shares closed up 7.06% to 23.97 yuan. The turnover rate for the whole day reached 67.7%, and the latest dynamic price-earnings ratio was 40 times. Guo Jingsong, chairman of Songde Co., said that the strategic goal of Songde is to become a "world-class professional manufacturer of gravure printing presses and complete sets of equipment". Songde shares the target customers as "global high-end users" and strives to make Songde The share production technology has reached the world's advanced level and has reached the international leading level in certain segments. This article will introduce you to the common problems of gravure printing presses.
The gravure press blade should be placed at an appropriate height. The blade should be adjusted according to the printing speed. The printing speed is fast, the distance from the embossing point is far, the printing speed is slow, and the embossing point is closer.
The tension control of the unwinding tension zone of the gravure printing press is mainly performed by the uncoiler. Tension control is a main function of the uncoiler, so the control principle of the tension zone is consistent with the working principle of the uncoiler. The clutch, tension roller and tension controller form a closed-loop control system.
During the printing process, the paper is not easy to be separated, the paper on the delivery table is not properly received, or the paper on the paper feeding table is skewed and the overprinting is not allowed, etc., which may be caused by static electricity. To eliminate printing static electricity, a static eliminator is generally installed on the printing machine to ionize the air around the printing machine, thereby neutralizing the positive and negative static electricity on the paper. It is also possible to spray an appropriate amount of water mist around the gravure printing machine or behind the impression cylinder to remove static electricity from the paper. In addition, increasing the humidity in the printing shop is conducive to the elimination of static electricity.
The plate cylinder is the determining factor in determining the amount of ink on the print of the gravure press. The viscosity of printing ink is the most important factor affecting the amount of ink on the printed matter, and it is also an important factor affecting the printing speed. The viscosity of the ink is known from the measurement, and the thickness of the ink is obtained by the perception. The two are closely related. Although the viscosity is not equal to the thick and thin, the viscosity and the thick and thin results are inseparable when measured with the paint cup and the Zahn cup.
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