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New Polycarbonate Sign Face Material Eliminates Hot Spots, Optimizes Light Uniformity in LED Back-Lit Signs
Date:3/26/2010

Sheffield Plastics, a Bayer Material Science LLC company based here, will feature its new Makrolon® LD polycarbonate sheet for LED back lit sign faces at the 2010 International Sign Association Expo. The manufacturer will showcase the product in its ISA exhibit and its presentation, “History and Evolution of Plastic Sign Faces,” as the latest technological step in these materials.

Sheffield, MA (Vocus) March 26, 2010 -- Sheffield Plastics, a Bayer Material Science LLC company based here, will feature its new Makrolon® LD polycarbonate sheet for LED back lit sign faces at the 2010 International Sign Association Expo. The manufacturer will showcase the product in its ISA exhibit and its presentation, “History and Evolution of Plastic Sign Faces,” as the latest technological step in these materials.

In conjunction with Bayer MaterialScience’s R&D team, Sheffield developed Makrolon LD to address visible LED “hot spots” from the intense pinpoint lights that can show through traditional sign face materials. Thermoforming, which typically thins out corners and edges of sign face sheet products, heightens the hot spot problem. The inherent composition of the new polycarbonate sheet eliminates the problem by diffusing or spreading LED luminance uniformly, even in thermoformed three-dimensional faces. It also delivers high light transmittance to ensure brightness of LED back-lit signs.

Sheffield’s Dr. Ted Trautman, who worked on the development of Makrolon LD polycarbonate sheet, also defined sign design techniques to enhance luminance quality of LED’s in conjunction with the sign face material.

According to Dr. Trautman, “The variability of the human factor in judging sign lighting from different sight angles was a major consideration in developing the Makrolon LD product. We devised comparative test
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Source: PRWeb
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