Retroreflective Identification Products

LEM manufactures many of its products in a reflective format, specifically, on Retroreflective material.  This material, which comes in two formats, allows for the reflective label or sign to appear very bright when hit with a direct light source at night or in low light situations.

Retroreflected light is light that is directed as a singular beam back to its source.  This creates an intensity of reflected light that appears brighter than light reflected in a mirror or off of a rough surface.  A mirrored or smooth surface such as water, directs the light off in another, singular direction and is known as a Specular reflection.  Light reflected off a rough or uneven surface such as an asphalt road, paper, a sheetrock wall or wood floor is known as Diffuse reflection, which distributes the reflected light in many different directions.

Retroreflective sheeting materials encapsulate tiny glass beads, prisms and lenses to direct the light back in the general direction of the source but with a slight variance to allow the viewer to see the reflective signage clearly.  The retroreflective products allow viewers to see the sign or label from greater distances because of the intensity of the reflected light.


The Retroreflective sheeting materials LEM typically uses come in two formats:  Engineer grade and High-intensity Prismatic grade.

Engineer grade is the basic reflective sheeting typically made of tiny glass beads or lenses embedded between two layers with adhesive backing and shows no visible pattern.  It can be printed upon by various methods such as screen and thermal transfer.  It offers a moderate distance of visibility and is typically used for non-essential street signs, automobile graphics, decals and labels.


High-Intensity Prismatic grade is made of two layers.  The outer layer is a pigmented translucent layer and the inner layer contains the optical lenses and/or glass beads.  The two layers are connected with a lattice-like pattern resembling a honeycomb design.  The sheeting accepts printing from a variety of process types including screen, solvent-based inkjet and thermal transfer.  Prismatic grade offers greater viewing distances.  It can be used for traffic signage, work zone marking and general signage identification applications.

LEM manufactures a number of standard products on reflective materials including numbers and letters (in engineer and prismatic grades), KVA labels and voltage markers (in engineer grade only), safe distance transformer labels (prismatic grade), hydrant rings (engineer grade) and parking and traffic signs (engineer and prismatic grades).  Custom identification products on both grades of reflective material are available from LEM.

retroreflective identification products

LEM standardly utilizes Avery-Dennison T1500 Engineer Grade reflective (equal to 3M 3200 series) and T6500 Prismatic Reflective (equal to the 3M 3930 series), both of which comply with ASTM D4956.