Simple identification of return plate

Simple identification of return plate

1. Look: the appearance of the return plate is yellow, especially from the cross section

2. Touch: the surface is easy to scratch

3. Smell: when the return plate is stored, it has strong irritant smell, which is produced during cutting. When it is burned, it has peculiar smell, bubbles and black smoke

4. During the hot forming process, it is easy to deform and produce bubbles

5. Sensitive to paint and ink, prone to craze or crack

6. Yellow easily after sunlight

7. Poor solvent resistance, easy to crack