12/22/2021

Causes of paper wrinkling

Add Your Heading Text HereCauses of paper wrinkling       Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.Causes of paper wrinkling.Add Your Heading Text HereCauses of paper wrinkling  The pressure of the paper pressing wheel of the paper feeding table is uneven The paper is subjected to axial force during transmission, resulting in the bulging of the middle part of the paper during the positioning of the front gauge and the formation of wrinkles after embossing.Add Your Heading Text HereCauses of paper wrinkling 2. The gripping force of the paper gripper row of the embossing cylinder is different If the holding force on both sides of the paper holding tooth row of the embossing cylinder is insufficient, the trailing tip of the paper will wrinkle; If the gripping force on one side is insufficient, the corresponding trailing edge is wrinkled; If the gripping force in the middle is insufficient, the middle part […]
12/21/2021

Solution to Discoloration of Gold Silver Ink Printing

Solution to Discoloration of Gold Silver Ink Printing        Ink and printed products lose the color of gold, making the color grayish black and dull, which is a common fault in gold ink printing.        Gold ink is a printing ink made of gold powder, which is a mixed metal powder composed of copper powder and a small amount of zinc powder and aluminum powder.       The speed of the gold printing machine should not be too fast. Otherwise. The friction of ink roller increases and the heat generated increases, resulting in the oxidation and blackening of gold ink.       When offset printing gold, the contact between acid wetting solution and gold ink will have a chemical reaction, which will darken the metal luster of the printing piece. Generally, the wetting solution containing alcohol is used instead of acid wetting solution.    After cleaning the ink bucket and roller, if the organic solvents such as gasoline and k […]
12/21/2021

Introduction to Printing and Lamination

Introduction to Printing and Lamination         The film covering effect is not only related to the film covering raw materials and film covering operation methods, but also related to the ink layer condition of the pasted printed matter. The condition of ink layer of printed matter is mainly determined by the nature of paper, ink performance, ink layer thickness, graphic area and integrated density of printed graphic.Introduction to Printing and Lamination         These factors affect the formation conditions of bonding mechanical adhesion and physical-chemical adhesion, resulting in the change of surface adhesion of printed matter.Introduction to Printing and Lamination         Ink layer thickness of printed matter. Field printed matter with thick ink layer is often difficult to bond with plastic film, and will soon delamination and blister. Introduction to Printing and Lamination       This is because the thick ink layer changes the porou […]
12/21/2021

Pollution Problems and Countermeasures of Packaging and Printing

Pollution Problems and Countermeasures of Packaging and Printing        Today’s society has developed to the extent that all commodities need packaging and all packaging needs printing. Printing is the most important decoration and processing means of product packaging. Packaging without printing is almost unimaginable.Pollution Problems and Countermeasures of Packaging and Printing          Printing plays the role of transmitting information, publicizing and introducing products. At the same time, for some commodities, printing also plays an important role in anti-counterfeiting. Today’s packaging and printing is developing towards more exquisite and increasing the added value of goods.Pollution Problems and Countermeasures of Packaging and Printing        In all links of the printing process, such as he zushun, Hu Weiping, Tan Yiguo, School of mechanical and electrical engineering, Kunming University of tech […]
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