Good Morning,
Gorilla Tape is made with a highly concentrated, specially formulated rubber based adhesive. The backing, which is thicker than ordinary duct tape, is made of polyolefin, while the webbing is a cotton polyester blend. The thicker webbing allows for a crisp, straight cutting line when tearing the tape. Gorilla Tape is twice as thick, and has 2 to 3 times the amount of adhesive than most duct tapes.
Unfortunately, we don't publish our product specs for competitive reasons!
Mary-Ellen