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2021.7.26
Silk screen printing (silkscreen printing) refers to making a screen printing plate with pictures and texts by using screen as plate base and photosensitive plate making method. Screen printing consists of five elements: screen printing plate, scraper, ink, printing table and substrate. The screen printing plate is printed based on the basic principle that the picture and text part of the mesh can pass through the ink and the non picture and text part of the mesh can not pass through the ink. When printing, pour ink into one end of the screen printing plate, applies a certain pressure on the ink part of the screen printing plate with a scraper, and move at a uniform speed towards the other end of the screen printing plate. During the movement, the ink is squeezed onto the substrate by the scraper from the mesh of the graphic part. Here at diecasting-mould.com, we will explain everything you need to know about silk screen printing, invention, working process, applications, advantages and disadvantages.
Screen printing originated in China for more than 2000 years. As early as the Qin and Han Dynasties in ancient China, jiaval printing method appeared. By the Eastern Han Dynasty, the wax printing method of jiavalerian had been widely popular, and the level of printed products had also been improved. During the Daye period of the Sui Dynasty, people began to print with a frame stretched with silk screen, which developed the jiaval printing process into screen printing. According to historical records, the exquisite costumes worn by the court in the Tang Dynasty were printed in this way. In the Song Dynasty, screen printing developed again, improved the original oily coating, and began to add starch rubber powder into the dye to make it become a slurry for screen printing, making the color of screen printing products more gorgeous.
Screen printing is a great invention in China. The American “screen printing” magazine commented on China’s screen printing technology: “there is evidence that the Chinese used horse mane and templates 2000 years ago. The clothing in the early Ming Dynasty proved their competitive spirit and processing technology. ” The invention of screen printing has promoted the development of human material civilization in the world. Two thousand years later, screen printing technology has been continuously developed and improved, and has become an indispensable part of human life.
Screen printing consists of five elements, namely screen printing plate, scraping scraper, ink, printing table and substrate. The basic principle of screen printing is to use the basic principle that the mesh of the graphic part of the screen printing plate is ink permeable and the mesh of the non graphic part is ink impermeable. When printing, pour ink into one end of the screen printing plate, apply a certain pressure on the ink part of the screen printing plate with the scraping scraper, and move towards the other end of the screen printing plate at the same time. The ink is squeezed onto the substrate by the scraper from the mesh of the graphic part. The imprint is fixed within a certain range due to the viscosity of the ink. During the printing process, the scraper is always in line contact with the screen printing plate and the substrate, and the contact line moves with the movement of the scraper. Due to a certain gap between the screen printing plate and the substrate, the screen printing plate generates a reaction force on the scraper through its own tension, This reaction is called resilience. Due to the action of resilience, the screen printing plate is only in mobile line contact with the substrate, while the other parts of the screen printing plate are separated from the substrate. Make the ink and screen break, ensure the printing dimensional accuracy and avoid rubbing the substrate. When the scraper scrapes the whole layout, it lifts up, and the screen printing plate also lifts up, and gently scrapes the ink back to the original position. This is a printing trip.
1.It is not limited by the size and shape of the substrate. Generally, printing can only be carried out on the plane, and screen printing can not only print on the plane, but also print on shaped objects with special shapes, such as spherical surfaces. Anything with shapes can be carried out by screen printing.
2.The layout is soft and the printing pressure is small. The screen is soft and elastic.
3.Strong ink layer coverage. It can be printed in pure white on all black paper with strong three-dimensional feeling.
4.Suitable for various types of inks
5.Strong optical rotation resistance. It can keep the luster of printed matter unchanged (Temperature and sunlight have no effect). This makes it possible to print some self-adhesive without additional lamination and other processes.
6.Printing methods are flexible and diverse
7.Plate making is convenient, the price is cheap and the technology is easy to master
8.Strong adhesion
9.It can be pure manual silk screen printing or machine printing
10.Suitable for long-term display and expressive advertising outdoors
1.Multi color
2.Small batch
3.Radian limit
4.The ink volume cannot be controlled
Silk screen printing is widely used. Except for water and air (including other liquids and gases), any object can be used as a substrate. When evaluating screen printing, someone once said that if you want to find an ideal printing method on the earth and achieve the purpose of printing, it is likely to be screen printing.
Paper printing art printing — advertising, pictorial, calendar, lantern paper, etc.
Trademark printing
Transfer printing
Packaging printing
Building materials printing – wallpaper, etc
Plastic printing plastic film – vinyl toys, schoolbags, plastic bags, etc.
Plastic standard plate — pseudo metal composite materials and various standard plates.
Production parts – instrument parts.
Wood products printing crafts – lacquerware, wooden crafts, toys.
Processing semi-finished products – sporting goods, wood boards, ceilings, road signs, signboards, fake metal plates, billboards, etc.
Metal products printing metal cylinders, metal utensils, metal products.
Glass, ceramic products, printed glass – mirrors, glass plates, cups, bottles, etc.
Ceramics — utensils, handicrafts.
Sign text description board, dial and formed articles.
Printed circuit board, printed circuit board, civil or industrial substrate, thick film integrated circuit board, cold light sheet.
Printing and dyeing – flags, cloth, towels, handkerchiefs, shirts, vests, knitwear, etc.
Other printing — pockets, shoes, number cloth, various bags, backpacks, handbags, schoolbags, etc.
Leather printing products