Analysis on Key Points of Post Printing Binding in Digital Printing        Only by carefully designing and arranging the printing from the beginning can we ensure the harmony between printing and post press processing.Analysis on Key Points of Post Printing Binding in Digital Printing During production, the following points shall be noted: 1. Folding        Because the ink pigment on the digital printed matter is only attached to the paper surface, folding processing is easy to break. Therefore, it is best to press creases before folding processing. 2. Film covering         Laminating the surface of digital printing, especially after printing a large area of field, will help to protect the printing in post press processing, especially in cutting or packaging. It may not be beneficial to cover double-sided printed matter on one side, because the uncoated side may be more prone to peeling off of printing pigment due to friction in subsequent proces […]

Influence of Ink Thixotropy on Printing         Ink thixotropy is one of the properties of printing process, which has a great impact on the quality of printing products.Influence of Ink Thixotropy on Printing         Thixotropy refers to the phenomenon that the ink becomes thinner or thicker and the fluidity changes under the action and influence of external forces and external environmental factors. For the printing process, stable product printing quality requires that the ink should maintain appropriate and stable fluidity. Influence of Ink Thixotropy on Printing          However, due to the inherent factors of ink itself and printing conditions, the ink will inevitably appear “thixotropy” in the printing process, which affects the stability of product quality. Therefore, we should correctly understand the thixotropy of ink, take some measures to overcome and make up from the process and technology, and reduce the thixotropy degree in ink printing, so as to better ensur […]

Causes of Paper Wrinkling in Offset Printing        In the packaging and printing industry, a variety of offset printing technologies are often used.Causes of Paper Wrinkling in Offset Printing 1.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.Causes of Paper Wrinkling in Offset Printing 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 of the paper will wrinkle.Causes of Paper Wrinkling in Offs […]

Color Matching in Actual Printing        In the packaging and printing industry, in the actual printing, we often encounter the problem of color matching. If we do not understand the performance of ink and the basic knowledge of color, it is difficult to achieve the expected effect.Color Matching in Actual Printing     White ink, gray ink and black ink have no hue, only saturation. The addition of white ink to any color ink will increase the luster and brightness of the ink, and reduce the color at the same time. If black ink is added, it will make the ink shiny and gray. See the following figure for the change:Color Matching in Actual Printing           Note that the ink shall be measured by balance or electronic scale, and the sample shall be scraped with an ink scraping stick. When the ink is adjusted, the proportion shall be recorded and archived to ensure the consistency of the ink color next time.Color Matching in Actual Printing         First of all, we shoul […]