This is a double sided copper tape, two surfaces with electrically conductive acrylate adhesive. Copper foil thickness around 0.038 mm, and each adhesive layer is 0.026 mm thick.
Total thickness is 90 um (micrometer), with PET release liner as protection.
Sell in pieces of 140 mm x 270 mm size.
For lamination of piezo PVDF film (no electrode) to other surfaces and the double sided tape can serve as one electrode.