Perspective screen printing

In recent years, with the renewal of screen printing materials and equipment, screen printing has had more room for development. From the past, only small-size instrument panels, circuit boards, and nameplates could be screen-printed, and now can be printed one at a time. 5 square meters of beautiful picture. Because of the screen printing screen, it has the features and capabilities that other screen production methods cannot have, making it an important place in today's advertising image production. Carefully understand the advantages of screen printing images. The first is the weather resistance of screen printing images, as long as the screen is printed with genuine screen printing ink, the color of which can be maintained outdoors for more than two years. This feature can be clearly demonstrated in areas with high UV content. Then there is the effect of the screen printing image itself, and now the general screen printing image accuracy is 40 lines -60 lines, this accuracy does not seem too high, but the use of outdoor advertising is not the same, generally we watch the distance of outdoor advertising at least There is a distance of more than one meter. At this distance, as long as the image is structured and the contrast is appropriate, the image seen on the scene is clear-cut. Since the screen-printed images are all composed of small dots, they are not permeated with each other (this is essentially different from all inkjet printers). The colors of the images are sharply contrasted with each other, so they look clear and have a clear sense of body (this point can be seen by carefully observing the screen printing and painting of the bus kiosks, and the same image is printed in the form of hanging nets when printing. The far-sight effect is definitely better than the image produced in the normal way). There is a wide range of screen printing materials, from less than 1mm paper, to several millimeters in thickness of acrylic, aluminum, iron, and even a variety of special-shaped surface, but also due to screen printing inks have high temperature characteristics, but also It gives many printed products the opportunity to shape the products, and it is particularly representative that they can be molded into various light boxes after printing with acrylic sheets. Screen printing has such a wide range of application, then how do we actually do it in order to produce high-quality screen printing products? Chengdu Jiahe Advertising Co., Ltd. introduced a large-scale screen printing machine capable of printing 3.8mm×1.5mm at a time, and continuously improved its technical level in practice, improved relevant management, and made its products fully capable of entering the market for competition. We will discuss some practical experiences with everyone.

Screen printing is a serious process, from getting the customer's design drafts to the final packaging of the qualified products, each step requires careful and ready for the next step.

Prepress preparation:

First, electronic files

Screen printing requirements for the accuracy of electronic documents: the accuracy of electronic documents as long as the print image size of 80dpi / inch can be, the best file to use the CMYK mode from the beginning, if you want to scan the print must use a higher resolution scan It's very important that you have a de-networking function. If you do not go to the Internet, I am afraid that the printed products will have the possibility of collision, affecting the quality of the printing. In order to improve the text output quality, I suggest putting the image in the illustrator, enter the text output film, use this method to output, you can ensure that the edges of the text is neat, the screen is meticulous and beautiful, we suggest you use illustrator instead of coreldraw, there are two reasons In point, the speed of the first illustrator is much higher than that of the coredraw, and the second illustrator has better color control than the coredraw. Both of the requirements of quality and speed today are crucial.

Second, network board preparation

The following printing version requires that the stencil be cleaned with a special cleaning agent. After drying under dust-free conditions, the squeegee should be evenly coated with the sensitized adhesive. After the stencil has been completely dried and then exposed, the exposure time should be based on different brands. The thickness of the photosensitive resin and the photosensitive resin coating is determined, and it will not be mentioned here. The flushing of the stencil and the pressure of the squirt gun are also appropriate. If the pressure is too high, some small outlets will be washed away. The pressure is too small and the stencil can not be washed out. The stencil after drying can be used for printing.

Third, the printing process

Different printing inks are selected according to different substrates before printing to achieve the best printing effect. In the printing process, electrostatic dust should be particularly emphasized. The most obvious is the acrylic sheet. Cleaning the static brush on the surface during printing can solve the electrostatic dust and make the surface of the substrate clean to facilitate printing. During the printing process, attention should be paid to the placement of printed materials. Reasonable placement ensures good ventilation, quickens the drying time, facilitates pick-and-place and improves production efficiency. In each position of printing, it is best to have someone responsible for the operation, to ensure the accuracy of each alignment, and to avoid the appearance of waste products.

Source: Jiahe Advertising Company