Possible reasons:

1. Insufficient pressing amount during lamination

2. Insufficient lamination time during lamination

3. The platform temperature setting is wrong

4. The suction head temperature setting is wrong

5. The suction head breaks the vacuum and fails

Solutions:

1. Adjust the amount of lamination

2. Adjust the lamination time

3. Adjust the temperature setting of the platform

4. Adjust the temperature setting of the suction head

5. Check whether the vacuum breaking of the suction head fails