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Apparatus and method for producing retroreflective material having printed patterns thereon

  • US 6,120,636 A
  • Filed: 10/13/1998
  • Issued: 09/19/2000
  • Est. Priority Date: 01/26/1998
  • Status: Expired due to Term
First Claim
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1. A method of producing a patterned sheet of retroreflective material comprising the steps of printing the patterns on a transparent film, applying microprisms onto said patterns, such that the patterns are protected from the environment by being incorporated onto a window side of the microprisms and covered by the film, the microprisms having a base and side facets, wherein the patterns and microprisms are partly solidified as formed and after the microprisms are applied to the patterns and wherein the patterns and microprisms are solidified so that printed patterns are embedded into the base of the microprisms.

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