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Textured retroreflective prism structures and molds for forming same

  • US 20010048169A1
  • Filed: 07/09/2001
  • Published: 12/06/2001
  • Est. Priority Date: 09/28/1994
  • Status: Active Grant
First Claim
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1. A method of forming retroreflective sheeting comprising:

  • a) forming a mold by;

    (i) forming three sets of parallel grooves in a body of mold material;

    the grooves intersecting at an angle to form a plurality of prisms each prism having a base and three intersecting lateral faces which meet at an apex;

    (ii) removing a portion of at least one face of a prism to form a shorter size prism adjacent a taller size prism and a cut surface therebetween;

    b) texturing some, but not all, of the surfaces of the faces and cut surface;

    c) forming a replica of the mold;

    d) forming the sheeting in the replica; and

    e) removing the sheeting from the mold.

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