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Retroreflective sheet with nonwoven elastic backing

  • US 5,316,838 A
  • Filed: 03/26/1993
  • Issued: 05/31/1994
  • Est. Priority Date: 09/30/1991
  • Status: Expired due to Term
First Claim
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1. A retroreflective sheet comprising a monolayer of retroreflective elements partially embedded in and partially protruding from the front surface of a binder layer and a backing bonded to the back surface of said binder layer wherein said backing is elastic and comprises extensible nonwoven web comprising melt-blown microfibers each of said microfibers having at least two substantially continuous layers throughout said microfiber length comprised of at least one first layer of a low modulus material and at least one second layer of a relatively nonelastic higher modulus material capable of undergoing substantial permanent deformation.

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