Description

Crumple Flex Tester, by using this instrument, the users can test the degradation of water resistance of coated textiles due to flexing and crumpling in daily application use, which contributes to improving the water resistance of the fabric performance for the manufacturers.

The equipment tests a tube of fabric by twisting it through 90° stretching and 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. In all, Crumple Flex Tester measures the waterproof resistance of fabrics by simulating the repeated flexing of a garment during use. Besides, Crumple Flex Tester TF117C is a testing instrument with excellent equipment and a stable operating system at a reasonable price.

Features

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

Power

220 /110 V

50/60 Hz

3 A

Weight

43 Kg

Dimensions

Length: 630 mm

Width: 460 mm

Height: 360 mm

Standards

ISO 7854 Method C

GB/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. As a result, the cylinder of the coated fabric test piece will 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.

Test report

The experiment report should include the following content.

1 Details of the coated fabric markings

2 The number of this standard, i.e. GBT 12586

3 The situations the instrument works but its operation fails to follow the standard test procedure

4 The specified number of flexures for the test running and for conducting the inspection and the number of flexures for the final inspection

Cracking

We should take a careful examination of the samples by applying a magnifying glass, especially a stereoscopic microscope. If there is cracking, the report should also contain the following regulations, including the cracking depth, the number, and the length.

The grading of crack depth is specified as follows.

No cracking is the best situation.

A- there is cracking on the surface or the finish coat and the foam layer or the intermediate layer is still uncovered.

B- substrate fabric has not been exposed when there is a single coating or the cracking has not penetrated into the middle layer.

C- there is a cracking on the surface of the substrate fabric

D- the cracking covers the whole material.

The number of cracking

The cracking at the lowest level indicates the worst cracking.

Length of cracking

The cracking at the lowest level indicates the worst cracking, which should be expressed in mm.

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