1129 is a transparent cellulose film that has been dyed dark red. The tape is release coated for easy unwind. 1129 is opaque to UV and short wavelength visible light. Application; 1129 for the graphics and printing industry for masking and stripping up photographic films. It will protect not only orthochromatic films, contact and enlarging papers, but also printing plates during light exposure. The translucent nature of the tape allows it to be accurately positioned and the tape can safely be left in place on stored films.