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Retroreflective sheeting articles










Image Number 2 for United States Patent #6012818.

A retroreflective sheet comprises a film having a substantially flat surface and a large number of pyramidal projections having retroreflectivity on the opposite surface, and a colored layer and an adhesive layer disposed on the surface of the film having the projections. The adhesive layer comprises a heat-sensitive adhesive containing an acrylic polymer and a phenolic resin, and exhibits an elastic modulus (by dynamic viscoelasticity measurement, compression mode) at 30.degree. C. ranging from about 1.times.10.sup.6 to 1.times.10.sup.8 dyn/cm.sup.2.








 
 
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