After the sticky mat has been used for a period of time, the surface film layer is contaminated, and the surface film layer needs to be removed. When tearing off the film layer, many people start from the corner with the label and tear it away diagonally. In fact, this method is very unscientific. It is easy to make the pollutants attached to the sticky mat fly and enter the clean room through the air flow. Therefore, there is also a particular emphasis on the small action of tearing off the film layer.
The expert recommends that you use the following steps to remove the film layer to be replaced:
1. Find the color label on the edge of the mat;
2. Pick up the label and slowly peel off the film layer from the edge of the mat;
3. Continue to peel the film upwards and separate it from the mat until the four corners are separated from the mat;
4. Pull the four corners of the separation into the middle of the mat to form a tent;
5. Slowly separate the film in the middle of the mat;
6. Fold the film inward until it is small enough to be discarded.
7. The contaminated film should be thrown outside the locker.
These steps ensure that dust particles do not leak out of the film. Workers are not allowed to tear the label and tear the film off the mat, but should follow the above steps to slowly peel off the film.