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Crumple Flex Tester TF117C

CrumpleFlex Tester, to determine the degradation of water resistance of coated fabrics due to crumpling and Flexing in use.


Crumple Flex Tester, by this instrument user can test the degradation of water resistance of coated textiles due to flexing and crumpling in daily application use.

The equipment tests a tube of fabric by twisting it through 90° stretching alternately compressing the tube at the same time. After the flexure test, immediately, it can test the water penetration resistance of the fabric according to ISO 1420. A pre-set electronic counter automatically stops the crumple flex tester when the test reaches a preset cycle.


  • Work stations 2
  • Impact design of construction and appearance
  • Acrylic safety cover ensures safety in operation


220 /110 V50/60 Hz3 A


43 Kg


Length: 630 mmWidth: 460 mmHeight: 360 mm


ISO 7854 Method CGB/T 12586 Method C

Test Principle

Sew a rectangular piece of coated fabric test sample into a cylindrical shape and mounted it between two discs. One of the discs oscillated approximately 90° on its axis. This caused the cylinder of the coated fabric test piece to twist. At the same time, the other disc moves reciprocally along its axis, thus causing the cylindrical sample to be compressed along its length. This twisting and compression of the cylindrical test specimen continue for a predetermined number of cycles, or until the test piece appears visibly damaged.

Analysis of flexing damage

Assess the overall appearance, taking into account all visible factors such as wrinkling, cracking, flaking, and discoloration. Compare the flexed test pieces with the unflexed material and grade the flexed material according to the following four scoring levels. For the unbent material, no magnification is required to observe the damage to the appearance.

  • 0 None
  • 1 Slight
  • 2 Moderate
  • 3 Severe

Also, if there is flexing damage (cracking and delamination, etc.), please indicate the type and extent of the damage.

Welcome to TESTEX – a professional textile testing instrument supplier – Crumple Flex Tester is on sale, contact us to get a detailed price quote.

What is Flexing Resistance

Flexing Resistance is a measure index of bending resistance of rubber, leather and coated fabric. Take coated fabric as an example, the fabric will be distorted countless times in the process of using and washing, which requires a certain degree of flexing resistance to ensure that the fabric will not be wrinkled or damaged in a certain amount of time. Therefore, folding fastness is an important index of fabric. The fabric is twisted back and forth on a specified test instrument, recording the number of distortions and observing the damage conditions of the coated fabric.

CrumpleFlex Test Method

Principle: stitch a rectangular coated fabric sample into a cylindrical shape, and fix it between two disks. One of the disks wobbles about 90° around its axis and the other moves back and forth along its axis, which distorts and compresses the sample at the same time until the sample has completed a certain number of back and forth bending or has obvious damage.

Sample preparation : Cut a piece of sample along the horizontal and longitudinal direction of the fabric. Each sample is 220mm long and 190mm wide, then stitch the sample into a cylinder with 190mm length and 64mm inside diameter and the coating is outward.

Test procedure: check whether the equipment is running at the required speed before testing, install the cylindrical sample between two disks, each end of the sample is close to the inner side of the disc and clamp it tightly. The oscillating disc should stop at the center of the pendulum wheel, and the suture line of the specimen should be in line with the midpoint of the oscillating disc when we installing the sample. Start the instrument and run to the specified number of times.

Sample inspection: After the test, record the number of flexing, observe the whole appearance of the sample, and evaluate the damage degree of the sample. By comparing the samples with flexing test and without flexing test, record the details of wrinkle, fading and so on of the samples.

If you would like to buy a CrumpleFlex tester or want more information, please contact us.

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