Microstructured surface film for liquid acquisition and...

B - Operations – Transporting – 32 – B

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B32B 3/30 (2006.01) A61F 13/15 (2006.01) B01D 1/00 (2006.01) C08J 5/18 (2006.01) E04F 15/02 (2006.01) E04F 15/10 (2006.01) F28D 5/00 (2006.01) F28F 13/18 (2006.01) F28F 17/00 (2006.01)

Patent

CA 2435807

A film or tape has one of its major surfaces defined by microstructured features including a plurality of channels defined by spaced apart protrusions. The microstructured film is able to acquire liquids and to control the directional transport of such liquids for subsequent removal therefrom. The transport can be passive or active (i.e., caused or enhanced by an applied potential). The inventive microstructured films and tapes have applications in laminate floor assemblies (for spill removal) and industrial articles such as computer keyboards and other devices and assemblies that benefit from fluid removal. The invention also has application in evaporative and condensation applications. In one embodiment, at least one cross-channel is formed on the microstructured surface to join adjacent channels for liquid flow therebetween.

La présente invention concerne un film ou une bande dont une des surfaces principales est définie par des caractéristiques microstructurées comprenant une pluralité de canaux définis par des parties saillantes espacées. Le film microstructuré peut acquérir des liquides et réguler le transport directionnel de tels liquides, lesquels sont ensuite éliminés dudit film. Le transport peut être passif ou actif (c'est-à-dire, causé ou favorisé par un potentiel appliqué). Ces nouveaux films microstructurés et ces nouvelles bandes microstructurées peuvent être utilisés dans des éléments de plancher stratifié (pour l'élimination des déversements) et dans des articles industriels tels que des claviers d'ordinateurs et d'autres dispositifs et ensembles qui bénéficient de l'élimination de liquide. L'invention peut être utilisée dans des applications d'évaporation et de condensation. Dans un mode de réalisation, au moins un canal transversal est formé sur la surface microstructurée de manière à relier des canaux adjacents pour permettre l'écoulement de liquide entre lesdits canaux.

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