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3-D Characterisation of Nonwoven Fabrics by means of an optical system
PEREIRA, M.J.T.; L. R. Salvado; P. T. Fiadeiro; J. SilvyThe characterisation of fabric structure by means of quantified parameters is essential for the control of the fabrication processes and the resulting properties of the nonwoven materials. Important parameters of the structure are the porosity, the mean pore size and the pore size distribution, the specific area of the texture, the fibres orientation the last one needing to be characterised in the three dimensi...
Structure of papers and Nonwovens
PEREIRA, M.J.T.; A.P. Costa; R. Salvado; J. Silvy; P.T. FiadeiroWe characterise the structure of fibrous materials: papers and nonwovens by diffraction and transmission of light. This allows the measurement of the fibres orientation distribution of the sample as a whole or for the surfaces using replicas. Applications of the methods are demonstrated in the case of paper for the control of the curl tendency and for two kinds of nonwoven materials, one used in the tailoring o...
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