Type 4 (High Intensity Prismatic) – Highway Signage, Construction Zone devices, and Traffic Delineators
Type 4 Sheeting —A high intensity prismatic retro-reflective sheeting. This sheeting is an Unmetallized Microprismatic retro-reflective element (also known as Air Backed) material. This means that the prisms in the film are not given a mirror finish on the back. Instead, they are backed with a layer of air, and then a white backing below that. This makes the tape colors more vivid than metallized reflective films. Designed to replace high intensity Type 3 films in traffic, by replacing glass beads with brighter prisms. Typical applications for this material are permanent highway signing, construction zone devices, bollards, vehicle conspicuity and delineators.
HIM is not plotter cuttable due to the thick acrylic top coat which is almost as thick as a credit card. Plotter blades have a difficult time piercing this hard surface. So this retro reflective film is used as a background material for signs, or as a standalone reflective solution for bollards, vehicles, buildings, containers, dumpsters, and other surfaces that need to be clearly visible at night.
Photometrics for Type 4 Sheeting (minimum coefficient of reflection in candelas)
Observation Angle : positive .2 degrees / Entrance Angle : negative .4 degrees
- White – 500
- Yellow – 380
- Orange – 200
- Green – 70
- Red – 90
- Blue – 42
- Brown – 25
- Fluorescent Lime – 400
- Fluorescent Orange – 150
Steven Cole (Economics, MBA – University of West Florida , Business & Innovation – Stanford University) 25 years of experience in the reflective safety business. Specializing in vehicle accident and rear end collision reduction through increased visibility.