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Solar energy reflecting film structure and process of manufacture therefor

  • US 3,876,552 A
  • Filed: 03/16/1972
  • Issued: 04/08/1975
  • Est. Priority Date: 03/16/1972
  • Status: Expired due to Term
First Claim
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1. AN ARTICLE OF MANUFACTURE COMPRISING AN OPTICALLY TRANSPARENT AND SOLAR ENERGY REFLECTING FILM STRUCTURE OF POLYVINYL ACETAL RESIN HAVING DISPERSED THEREIN OPAQUE METAL PLATELETS OF A PARTICLE SIZE BETWEEN ABOUT 5 AND ABOUT 43 MICRONS WHEREIN SAID OPAQUE METAL PLATELETS ARE PRESENT IN SAID FILM STRUCTURE IN AN AMOUNT BETWEEN ABOUT 0.005 AND ABOUT 2% BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF SAID FILM STRUCTURE.

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