What is the significance of screen printing double exposure? How to master the double exposure time?

In order to further improve the water resistance of the screen printing plate made after printing; friction resistance, solvent resistance and increase the strength and fastness of the screen printing plate, improve the printing resistance, usually using double exposure method The screen printing plate is hardened (in addition to the double exposure method, there are also drugs that harden the screen printing plate). The double exposure time is usually determined according to the actual situation of the screen, including many factors such as the selected screen and the thickness of the coating film. Generally, the second exposure time is about one to three times the one exposure time. 'The screen printing plate is hardened and is suitable for mass printing and single-use screen printing plates. Under what circumstances can the screen printing plate not be screen hardened? The first is that the screen printing plate can not be hardened in small batch printing. Secondly, in the case where the screen printing plate is prepared for stripping treatment) and the screen printing plate is reused, the secondary exposure hardening treatment cannot be carried out, otherwise it will cause difficulty in stripping.

L Shape Height Adjustable Desk

Lifting slide table is a kind of work table that can be raised or lowered by electric or manual means, which can be used for office, study, painting, writing and other activities. According to different classification standards, lifting and sliding tables can be divided into the following types:

1. Functional classification: lifting sliding table can be divided into single motor, double motor and three motor and other different types, with different lifting speed and bearing capacity.

2. Operation mode classification: the lifting sliding table can be divided into pneumatic and electric operation modes, and the moving operation can be realized by pushing buttons.

3. Classification of sliding way: lifting sliding table can be divided into two types with wheels and without wheels. The table with wheels can easily move the position, while the table without wheels is more stable.

4. Desktop material classification: The desktop of the lifting sliding table can be made of different materials, such as wood, metal, glass, plastic, etc., each material has its characteristics and application occasions customized.

5. Size classification: The lifting sliding table can be selected according to the height of the user and the size of the required working space. The common sizes are small, medium and large.

In short, choose suitable for their own lifting sliding table need to consider many aspects of factors, such as function, operation mode, sliding mode, desktop material and size, in order to meet their own work needs and personal preferences.

L Shape Height Adjustable Desk,Work Office Lift Table,Automatic Desk Lift,Adjustable Lift Desk

Suzhou Herstar Medical Technology Co., Ltd. , https://www.htstandingdesk.com