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The thorn test machine is used for the hook and tuck test of woven fabrics and knitted fabrics. After repeated testing with a thorn ball on the rotating test piece for a period of time, the condition of fluffing and granulation of the test piece is observed to determine the grade. The test results are highly accurate and can effectively improve or classify the test pieces. Take a test piece of 200 X 330 mm in the warp and weft directions of the knitted fabric to be tested, and sew the test piece into a cylindrical shape with cotton thread. The front is on the outside, the suture is on the inside, put on the roller, fix both sides of the test piece with O-rings, and place the thorn ball on the test piece, Operate the specified number of rotations at a rotation speed of 60 rpm, and take the average value to judge the grade of the knitted fabric. |