Double Sided tapes are adhesive tapes designed for fastening surfaces together in an invisible manner. The backing material kan zijn covered with either rubber or an acrylic adhesive layer on both sides that can be sandwiched between two materials for joining. These are used for bonding, holding or mounting purposes https://iblog.iup.edu/gyyt/2016/06/07/all-about-burnie-burns/comment-page-5304/?replytocom=316570