Initially, the Mesh fabric of the screen printing process was made of silk, so this process was named "screen printing". In Greek, the root of the word "silk" is "seri", so Europeans use the word "serigrafica (or serigraphy)" to refer to this craft. Nowadays, Mesh fabrics are woven from fine polyester raw materials (or metal raw materials for a certain special purpose).
Choosing the right screen frame and screen cloth is very important for creating high-quality prints. This article will explain the author's views on different screen frame types, screen cloth parameters and performance standards, and recommend some details of screen printing pretreatment to readers. A way to maintain the printing effect for a long time.
The high-quality screen frame has the following characteristics:
·It has a slender shape enough to be fixed in the clamping device of the printing system.
·Able to withstand the pressure generated by the stretched Mesh.
·The structure should have waterproof and antifouling properties to ensure the stretch or adhesion effect of the Mesh.
Screen frame type
There are three main types of screen frames: hard wood type, hard metal type and repeatable stretch type. Understanding the main differences between these types will greatly help your choice (you can choose the most suitable screen frame type according to the actual application)
Wooden frame: Wooden frame is the most primitive frame, and it is also the easiest to make and the cheapest. Wooden frames are still active in the garment industry, mainly used for small-scale household production. Early wooden screen frames used pins or grooves for manual fixation, but manual fixation could not make the net cloth fully stretched. Because the loose Mesh fabric will cause many problems in the printing and dyeing, printing and remanufacturing process, we do not recommend the use of this wooden Mesh frame.
Metal frame: Compared with wooden frame, aluminum frame or steel frame has obvious advantages in the following aspects: anti-torsion or arching performance, water resistance, light weight and durability. In automated printing equipment or in other situations where strict control of printing quality is required, people usually use metal screen frames for printing operations. Most of the metal frame sizes are relatively uniform, but we can also produce different sizes of screen frame products according to the special requirements of customers. The net cloth is a pre-stretched product, which is fixed on the net frame by special equipment.
Repeatable stretchable screen frame: The repeatable stretchable screen frame provided by most manufacturers refers to the drum-type screen frame. There is Mesh. The operator can tighten the Mesh by rotating the roller bar, and then lock the roller bar in the rotated position. If necessary, the operator can re-tighten the loose screen at any time.
