Physical property testing of textiles and clothing

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Textile clothing physical properties yarn count density

1) Main test items: yarn count, density, weight, tensile strength, tearing strength, seam slippage, Seam strength, bursting strength, wear resistance, pilling resistance, etc.

2) Specific instructions

Yarn count: refers to the thickness of the yarn, currently used Most of them are British count, represented by Ne, which is defined as: the multiple of 840 yards of the length of 1 pound of cotton yarn when the public moisture regain is 9.89%.

Density: the number of yarns per INCH.

Gram weight: The weight in ounces per square yard of cloth or the gram weight of cloth per square meter.

Tensile strength: The force used when a fabric of a certain size is stretched by a tensile strength machine at a constant rate until it breaks is the measured tensile strength. Strong. Tensile strength testing includes grab sample method and strip method. Specific test methods are selected according to different testing standards and customer requirements.

Tear strength: A sample of a certain size is clamped on a tear strength meter, and a slit is cut in the middle to determine the tearing direction. Tear strength The force used by the instrument to tear the sample from the incision using a pendulum descending method is the measured tearing strength.

Seam slippage: After folding the fabric of a certain size, sew along the width direction, cut it at a certain distance from the seam, and use tensile strength The force used by the instrument to stretch to a certain suture opening at a constant rate or the opening distance when stretching to a certain strong force is the seam slippage we measure. There are two ways to measure joint slippage: fixed opening force measurement and constant force opening measurement. When testing, select the specific test method according to different testing standards and customer requirements. Seam slippage is generally only used for testing woven fabrics.

Seam strength: Just like seam slippage, fold the fabric of a certain size, sew along the width direction, and cut it at a certain distance from the seam. Finally, use a tensile strength meter to stretch at a constant rate to break the suture. The force used to break the suture is the measured seam strength. The seam strength can be performed at the same time as the seam slippage, and is generally only used for testing woven fabrics.

Bursting strength: Under certain conditions, an expansion force is added to a flat fabric at an appropriate angle until it breaks. , this force is the breaking force.

Abrasion resistance: Under a known pressure, the sample mounted on the sample clamp and the standard friction cloth are moved in a certain trajectory under a certain pressure. Rub against each other until the fabric has the number of broken yarns or holes required by the customer. Record the number of frictions at the end of the experiment, which is the measured wear resistance value.

Anti-pilling: Roll and rub the fabric under specific conditions for a certain period of time to observe the pilling and pilling on its surface. Pilling refers to fiber Clusters of tangled pom-poms stand on the surface of the fabric. Pilling refers to the roughness and unevenness of the fibers on the surface of the fabric and (or) fiber fluffing, which leads to changes in the appearance of the fabric. The pilling and pilling are evaluated by comparing the rating sample or the original fabric.

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