CreatBot DS User Manual page 36

Stick the Kapton tape
Stick the kapton tape.to the build plate. Use a credited card to push
the tape down without air bubbles.
It is the high temperature resistance double side tape, it contains
three layers.
1 Clean the plate carefully to ensure the clean and tidy, it will help
you avoid bubbles after applying the tape on it.
Take the tape out. If covering the plate completely, it will need 3
lines of the tape.
2 Uncover one side of the tape, and then try to stick it on the plate.
Please ensure the tape is smooth enough without any bubbles.
3 You can use the yellow board in tool box to push and press it
while sticking.
4 Cut the tape off at the same width of the plate.