Selection of exposure factory
Atmospheric elements
Exposure frame
Materials and equipment
Specification, model and requirements of bottom plate
Requirements and equipment of sample plate
Before the trial production of samples, the appearance and physical and mechanical properties of the paint film should be observed and recorded [for the format of the record card, see the evaluation method of weather resistance of paint film (GB 1766-79)].
Inspection period of template
Before checking the sample, the lower part of the sample should be washed and dried with a towel or cotton yarn in clear water as a way to check the light loss and discoloration. Do not wash the upper part, as a check for pulverization, mildew and other phenomena. The above aging phenomena can be checked at the same time.
Exposure period and termination index