https://www.findtape.com/JVCC-DC-4016R-P-Double-Coated-Removable-Permanent-Tape/p677/?cid=44&idx=1&tid=24&info=Double-Sided%20Tape%2FRemovable%20%26%20Differential%20Adhesion%20Tapes
PET tape backing, solvent-based acrylic adhesive. Shouldn’t be any PVC in there.