Imaging the three-dimensional structure of forming fabrics.

The article reports on the technique that was developed to produce three-dimensional computer models of forming fabrics. The technique consists of machining cross-sections of a fabric, imaging the cross-sections, and then reconstructing the fabric structure using computer-aided design (CAD). A demonstration of the application of this technique is presented which shows the existence of critical distances between filaments. An insight into the drainage flow through a fabric, which has an effect on the microstructure of paper produced on it is provided by this imaging technique.