Printing in the Frequently Asked Questions Frequently Asked Questions for printing, combined with the actual printing process, summarize some of the problems that often occur with the following tenpoint Pad printing by professionals answering questions, I believe that will employees be helpful. 1, the printing should pay attention to what the key points? Pad is silicone head as an intermediate steel graphic transferred to a special printing of the workpiece surface. Printing should pay attention to the most important changes in relations between the workpiece, steel, plastic head, ink four, such as the depth of the steel plate, the evaporation rate of the hard and soft plastic head, shape, size, ink, ink characteristics, workpiece surface characteristics of workpiece support the control of the external environment, as long as we can handle changes in these parameters and adjusted, you can basically understand the basic law of printing. More than just talk about the simple view of the specific operation must be based on actual changes in the application, and learn to master the application. 2, screen printing and pad printing thinner What is the difference? The difference between printing and silk screen thinner reflected in the composition and volatile speed. Which points differ, the formation of different quality, not discussed here, focuses on the silk screen printing thinner evaporation rate of different diluents manufacturers. Printing requirements of the open water quickdrying, to avoid the plastic head is not very good ink transfer, screen printing is required slow drying to avoid the mesh blocking net. However, in certain occasions, silk screen, open water can be used for printing on (open water), of the same nature, such as drying temperature can be general-purpose screen printing, open water to spice evaporation rate. Under normal circumstances, the quick-drying oil and water is not used for screen printing, but can be used to washing their nets. 3, how to determine the depth of the steel plate? Conventional printing plate, the depth of 2.4μm. Such as small text, the lines can be 2μm. The entities graphics, more than 3μm is also suitable for, outlets graphic 1.6μm may be darker, so the specific depth of the steel plate according to the pattern as well as the requirements of the ink may be. Also as a graphic, if the printing workpiece surface rough, pockmarked face or light cleansing, the requirements of the steel plate depth and differences between them to determine the depth of the steel plate, there are two effective and feasible methods. ① according to the data in this area requires a good data management to the corresponding depth gauge measuring the depth of the steel plate. ② according to the results of the actual printing, there is a strong hands-on experience, for example: If the oil return, graphics and fuzzy, the larger the possibility of too deep for the steel plate. Such as air bubbles (trachoma), may be too shallow. If printing plastic head is not printed to the workpiece, the plastic head ink tend to dry, the steel plate is too shallow; if the glue head ink showing uneven like, the steel plate is too deep. 4, red, white, yellow, blue plastic head What's the difference? Plastic head color diversification, mainly due to glue the first raw material color. Plastic head from a printing perspective, color does not affect the transfer role of the plastic head, the factors affecting the performance of the plastic head is in material and workmanship of the glue head, dip the impact of oil and oil off of the plastic head. Fundamentally red, white, yellow, blue plastic head is essentially the same, different color and subtle difference in the effect of printing printing function. 5, printing, printing patterns Why do they always and film not? Because the printing process by a curved, flexible silicone head on a flat plate transfer patterns to a variety of different shapes of the workpiece. In the transfer process, due to the pressure and the active surfaces of the plastic head and affect the degree of deformation of the plastic head, and ultimately affect the difference between the actual pattern and film designs. Control the deformation control the shape of the plastic head, soft and hard plastic head, the size of the plastic head, the shape of the workpiece, the workpiece, the workpiece support force, the first plastic pressure countries prime. If they really deviation is too large, you can modify the film to accommodate the plastic deformation of the head to achieve the desired effect. 6, how to judge the printing diluent evaporation rate is appropriate? To determine The thinner volatile is suitable for normal printing printing, mainly through the effect of the surface pattern in the plastic head of the ink and printing is completed to determine. Examples are given below: ① plastic head not printing to the workpiece to determine the state of the plastic head of the ink to dry, thinner dry too fast. ② printing is completed, the pattern on the workpiece fluff, drawing phenomenon too quickly dry; oil return fuzzy; is too slow to dry. Adhesion has become like broken, too fast dry; on printing, too fast to dry. 7 Why the printing is often a phenomenon of the bubble (trachoma)? Printing bubbles (trachoma) The reason for diversification, but the main focus on three aspects of the first plastic, steel, ink. Some of the most likely to produce bubbles (trachoma) the reasons are cited below: ① plastic head shape is not appropriate, not flat, or curved. ② plastic head center point (highest point) printed on the pattern, the formation of air row not produce bubbles. ③ plastic hair stick, damage, oil pollution caused by poorly printed plastic head. ④ steel plate etching too deep, thick oil by the ink stress plastic head glued oil incomplete. ⑤ steel plate etched too shallow oil layer is not thick enough. The ⑥ ink is too thin or too slow to dry. ⑦ ink is too dry or too dry. ⑧ scraper to scrape off part of the pattern at the ink on the steel plate. 8, the printing of the range? Printing is mainly through the plastic head to complete the transfer process, solid printing process is limited by the performance and shape of the plastic head. The plastic head has the following characteristics: ① the flexibility. ② There arc. ③ not infinite. So printing the printing range from the characteristics of the plastic head judge has a rough outline, not a printed pattern of a large area, but a certain size of the irregular shape, uneven workpiece printing graphics is applicable. Some printing can not be achieved. 9, the printing plate is only one? Printing plates more than one. Analysis, the principle of printing the template graphics intact glue the head to achieve the transfer, this template can be applied in the printing. Steel plate is just a commonly known, There are many types of printing plates, but the use of conditions or the situation is different, nylon plate, resin plate, 10mm thick steel plate, 0.5mm or 0.25 thick oil insanity steel and other domestic common Rockwell hardness HRC47 about the thickness of 10mm chrome steel plate. 10, whether the color of the workpiece must be one-time printing of multicolor machine? Not necessarily, according to the specific circumstances of the workpiece and printing chromatic determination. Such as workpiece positioning or poor positioning, you need a multicolor overprint, we recommend the use of multi-color models do a print forming; such as workpiece positioning of the good, the available monochrome, multicolor overprint. Such as printing four colors based on the chromatic, the best onetime printing, in order to produce good control of chromatic aberration.
Copyright All Rights Reserved © SHENZHEN HONG YE JIE TECHNOLOGY Co.,Ltd 粤ICP备17107859号