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Test method for density of canvas
Issues time:2013-3-23
The density testing method of canvas: there are two kinds of methods for the determination of the weft density:
(a) direct counting method
Direct counting method is by virtue of the cloth mirror or fabric density analysis of mirror finish. Analysis of fabric density scale length mirror is 5cm, in the analysis below camera lens, a strip of glass engraved with a red line, in the analysis of fabric density, moving a lens, a piece of glass on the red line and the red line at the same time scale aligned between two yarns, taking this as the starting point, edge mobile lens edge the number of number of yarns, until the 5cm line for this. The output of the yarn number is multiplied by 2, which is 10cm fabric density value.
At the point when the number of yarns, with two yarn between the central as the starting point, if the count to the end, more than 0.5, but less than a root, root count should be 0.75; if less than 0.5 root, according to the 0.25 root. The density of fabric should be generally measured 3-4 data, and then take the arithmetic mean value of determination results.
(two) indirect testing method
This method is suitable for high density, yarn count fabric of the rules of small organizations. First, through the analysis of fabric structure and organization of circular warp (weft count number of Organization Cycle), then multiplied by the 10cm cycle number, the product is the (weft yarn density).
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