A manufacturing process for embedding multiple parallel micro-capillaries into flat, flexible polymer tapes and films has been developed. Application areas include chemical and biochemical analysis, medical applications, heat exchangers and pressure sensing applications.

The shape and size of these micro-capillaries can be easily controlled, ranging in diameter from 5 to 500 microns, and having circular, elliptical or diamond cross-sections, allowing transport of liquids or gases at pressures as high as 50 bar. The capillary walls can also be designed to be semi-permeable or catalytic.

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