Microstructured surface film assembly for liquid acquisition and transprot

Abstract

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.

Description

background of the invention

[0001] The present invention relates to microstructured films and tapes capable of capturing liquid and directing the liquid to subsequent processing for removal. Delivery can be passive or active (ie augmented by the application of potential energy), and the invention finds utility in many industrial applications and assemblies.

[0002] The collection of liquids in industrial applications (eg, overflows, condensate, inks, sump fluids, etc.) can cause problems later on if the liquid is left for a period of time. Handling problems with certain fluids can lead to corrosion, loss of power, excess residue, loss of efficiency, inadequate energy utilization, compromised safety, etc.

[0003] Existing methods of liquid control focus on preventing the accumulation of liquid on surfaces through methods such as the use of absorbent materials, protective films and tapes, and sealants. However, none of the methods described are effective in removing liquid w...

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