How do Scotchshield (Ultra) Safety and Security Window films work?

Scotchshield Ultra Safety and Security window films are designed to make glass shatter-resistant by holding the glass pieces together when broken.

Different from Scotchtint film, Scotchshield window films are made with thicker polyester and a much thicker, more aggressive adhesive system. The Ultra films are unique in the industry; they are built using a special micro-layered polyester technology which increases the films’ tear resistance significantly. Pound for pound, the impact and tear resistance of Scotchshield Ultra films outperform all other films of similar thickness.