At present, unidirectional (stress) stretching is mainly used in fabric tensile and fracture test, that is, the strength of fabric test strips in warp (longitudinal) direction, weft (horizontal) direction or at an Angle with warp and weft.It is suitable for products with anisotropic mechanical properties and small tensile deformation capacity.For knitwear with easy deformation (especially single-sided knitwear with easy winding), woven fabrics and nonwovens, it is generally advisable to adopt bursting test.Below UTSTESTER will be detailed introduction for you.

I. experimental principle:

The specimen of a certain size is stretched to fracture in the way of constant elongation, and the maximum force it can bear -- breaking strength and corresponding length increment -- breaking elongation are measured.If necessary, also can draw the strength of the fabric - elongation curve, calculate a variety of tensile indicators.

Ii. Test samples:

According to the fabric varieties, the test samples have the following three forms, as shown in the figure.

Testing on tensile fracture of household fabrics

Iii. Test methods:

(1) Open Edge Yarn Strip Method: used for general woven fabric samples.The sample width cut shall be 5mm or lOmm wider than the specified effective test width (depending on the tightness of the fabric), and then approximately equal amounts of yarn shall be removed from both sides of the sample width by the demultifying yarn method until the sample width meets the specified requirements to ensure that the yarn will not come out of the burr during the test.

(2) Cut-Strip Method: applicable to knitted fabrics, coated fabrics, nonwovens and woven fabric samples that are not easy to remove the edge yarn.

(3) Grab Strip Method: sample width is greater than clamping width.It is suitable for woven fabrics, especially those with heavy pulp finishing, not easy to draw the edge yarn and high density fabrics.

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