3m Innovative Properties Company

Michael A Essien

Jeffrey D Janovec

Terry R Bailey

Kanta Kumar

James E Lasch

Paul J Wang

Raymond L Lucking

Jaime R Ojeda

Michael D Currens

Retroreflective articles having multilayer films are useful for commercial graphics and retroreflective products, such as roll-up signs for highway transportation safety. The articles comprise multilayer films having at least one layer of polyurethane and at least one layer of a copolymer of alkylene and at least one non-acidic, polar co-monomer. Articles having the new multilayer films provide the same or improved performance, are less expensive, and offer improved methods for manufacturing, when compared to prior articles.

Retroreflective articles having multilayer films and methods of manufacturing same

A flexible, durable, cube-cornered retroreflective article capable of accommodating the expansion and contraction of the underlying polymeric substrate where such article has a pillowed or curved microstructured member bonded in a regular pattern to a sealing member. The retroreflective article has normal and stressed states. In the normal state, the microstructured member is substantially parallel with the sealing member. In the stressed state, the microstructured member is either compressed or elongated and the sealing member is substantially flat. The retroreflective article may be attached to traffic control devices, such as polymeric barrels, cones, or tubes to direct and guide motorists through road construction areas.

Pillowed flexible cube-corner sheeting and methods of manufacture

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Woodbury, MN, United States of America

Michael A Essien