The Research On The Mechanical Behavior Of The Screen Printing Materials

The scope of screen printing's application is expanding and the quality requirements of screen printing are also getting higher and higher. The development of screen printing is building on the production and practice technology, the lack of guides of theory and mathematical models hinder the development of screen printing. Therefore the research of the theory and mathematical model is an urgent need.This paper mainly analysis the effects of screen, screen frame, squeegee and the other basic screen printing materials on the screen printing quality from the mechanics and deformation aspects and provides theoretical basis for the practical application of screen printing. Screen is the base of screen printing, selecting suitable and economical screen according to their mechanical properties is an important method to reduce the costs of screen printing. Screen frame is prone to deformation in plate-making process because of their structural reasons and the quality of the screen plate, so it is necessary to do some pretreatment according the deformation principle of screen frame to ensure the smooth progress of screen printing and avoid material'waste. Now the main material used to make squeegee is rubber. The shape of squeegee will change because the crimp chain of molecule will portend with the tension. The deformation of squeegee will bring a series impacts into screen printing. This paper will conduct a detailed analysis of mesh, squeegee and screen frame which can form a completely force system with the existence of snap-off. Orthogonal experiment was also introduced to show that the tension of the screen is the main factor which affected the quality. The method can be used to obtain best printing settings and provide reference for production.