There are usually two types of screen printing, namely manual printing and mechanical printing. Silk screen printing is manual printing, which means that from paper feeding to paper delivery, the up and down movement of the printing plate, and scraping and scraping are all manual operators. Mechanical printing means that the printing process is completed by mechanical action. It is divided into semi-automatic and fully-automatic printing. Semi-automatic means that the placing and taking out of the substrate is manually operated, and printing is completed by machinery; fully-automatic means that the entire printing process is completed by machinery. There is also a quick and easy method of curved screen printing, movable surface screen printing, which involves removing the screen layout and printing it directly against the surface of the substrate. Using the removable surface screen printing method, a large number of processed printed products can be printed, such as latex plastic buckets, pure water buckets, washbasins, thermos bottles, cups, bowls, plates and other products. At the same time, this method can be used to print signboards on cars and also on special-shaped flat surfaces. Production of removable screen plates: First, dry and repair the photosensitive text and graphic plates, then take them off and cut them according to size. And use wood chips or aluminum sheets as the skeleton at both ends of the screen, and use adhesive tape to firmly fix it. You can also use adhesive to directly fix it, so that the required removable screen version can be made. How to operate the removable screen: Choose different printing materials according to the substrate: first, use a flat plate and a plate to mix the ink, then, one person holds the removable screen with both hands, and tightly attaches the printed part to the substrate On the object surface, another person uses a scraper to evenly dip the ink on the upper surface of the scraper on the ink adjusting plate, and then places the scraper evenly on the ink adjusting plate to scrape and print evenly. If the printed graphics area is too large, you can pour the ink on the layout according to the situation, but do not let the ink flow out of the substrate. Be careful not to make the ink too thin or too dry. It is better to have a moderate amount of dryness and wetness. Small-area printing and painting can be operated by one person. The method is to use packaging tape to affix one end of the movable plate to the desired position on the substrate machine, and then use the other hand to tighten the printing plate against the substrate. for printing. Note for starting the plate: Be sure to lift the plate lightly in the direction of the end of the tape. This is also true if two people operate the plate for advertising. Printing using this method is easy to operate and has flexible requirements for substrates. It can be large or small, and the quantity It can be more or less, and has the advantages of low cost and energy saving. The scope of screen printing applications is very wide. Except for water and air (including other liquids and gases), any object can be used as a printing substrate. Someone once said this when evaluating screen printing: If you want to find the ideal printing method on earth to achieve the purpose of printing, it is probably the screen printing method. Specifically, screen printing is mainly used in the following areas: ① Paper printing Art printing - advertisements, illustrated magazines, calendars, lantern paper, etc. Trademark printing, transfer printing, packaging printing, building materials printing - wallpaper, etc. ②Plastic printing Plastic film-vinyl toys, school bags, plastic bags, etc. Plastic dials - fake metal composite materials and various dials. Production parts - instrument parts. ③Wood product printing and handicrafts-lacquerware, wooden handicrafts, toys. Processing of semi-finished products - sporting goods, wooden boards, ceilings, road signs, signs, fake metal wrenches, billboards, etc. ④ Metal product printing: metal tubes, metal utensils, metal products. ⑤Printing of glass and ceramic products Glass - mirrors, glass plates, cups, bottles, etc. Ceramics - utensils, handicrafts. ⑥Signs: Text instruction boards, dials, and formed items. ⑦Circuit board printing: Printed circuit boards, civil or industrial substrates, thick film integrated circuit boards, and cold light sheets. ⑧Printing and dyeing Printing and dyeing - flags, cloth, towels, handkerchiefs, shirts, vests, knitwear, etc. 'Other printing - pockets, shoes, bib numbers and various bags, backpacks, handbags, schoolbags, etc. ⑨Leather product printing