The invention relates to a sealing device including a functional layer with a first main surface and a second main surface, and a barrier layer directly or indirectly connected to the second main surface of the functional layer. The functional layer has specific surface roughness characterized by a waviness factor Wf. The invention also relates to a production method of the sealing device and the application of the sealing device in substrate waterproofing.
Area Code: CH
Application Number: CN202080078144.2
