Retroreflective articles having multilayer films and methods...

Details Retroreflective articles having multilayer films and methods... Retroreflective articles having multilayer films and methods...

B - Operations, Transporting

32

B

B32B 27/40 (2006.01) G02B 5/12 (2006.01) G02B 5/124 (2006.01) G02B 5/128 (2006.01)

Patent

CA 2381989

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.

Cette invention se rapporte à des articles rétroréfléchissants avec films multicouches qui sont utiles pour des applications graphiques commerciales et des produits rétroréfléchissants, tels que des panneaux déroulables pour la sécurité du transport routier. Ces articles comprennent des films multicouches ayant au moins une couche de polyuréthanne et au moins une couche d'un copolymère d'alkylène et d'au moins un comonomère polaire non acide. De tels articles ayant ces nouveaux films multicouches fournissent les mêmes performances ou des performances améliorées, sont moins coûteux et offrent des procédés de fabrication améliorés, par rapport aux articles de la technique actuelle.

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