Crimp Rigidity Tester

Crimp Rigidity Tester

Crimp Rigidity Tester


Crimp Rigidity Tester is used to determine the bulking potential of texturized yarns. Crimp is an important property that determines processing behaviour in carding, drafting and fault incidences in yarn. Crimp frequency, amplitude, crimp stability, crimp elongation, decrimping point are some of the important properties that determine crimp.

Crimp Rigidity Tester can be used for both polyamide and polyester texturized yarns. Crimp frequency and amplitude may be determined by projecting a magnified image of fibre on screen. Equipment at B-Tex Engineering is manufactured using high quality and high grade raw materials, and is tested for quality assurance before delivery. Moreover, all testing instruments manufactured by us are covered by warranty.

Tension device is used in equipment to provide proper tension between two clamps.  The vital role of this tester is to check the Crimp Rigidity of yarn.

Feature of Crimp Rigidity Tester

  •  The instrument is based on test method.
  • The tester can be used for both polyamide and polyester texturized yarns.
  • Instrument mounted on a sturdy metal base. Compact and portable.
  • Heating arrangement for measurement of hot Crimp contraction.


Swift Perimeter          : 1.10 Meter
Number of leas made at a time : 1
Counter (Mechanical Five Digits Reset able) : Connected with Geared Motor
Overall Dimensions of the Unit     : 550±5 (L), 220±5 (W), 495±5mm (H)
Net Weight of the Unit    : 7.300 Kg.
Overall Dimensions of the Glass  : ID 102±0.5 mm, OD 116.3±0.5mm
Net Weight of the Glass : 3.230 Kg.
Cone Stand  : 750 ± 5mm (H).
Geared Motor (12v DC)  : 25 RPM


 How Crimp Rigidity Tester works?

The principle of this test is as follows:

A load equivalent to 0.09 g/dtex is suspended from the end of a yarn immersed in water. After a fixed time the load is reduced to 0.0018 g/dtex and after a further fixed time the reduction in the length of yarn is measured. The crimp rigidity of yarn is the reduction in length of the yarn expressed as a percentage of the original length.

Video Clip :


The test method used was as follows:

  1.  Place the package of yarn to be tested on the stud of the base plate of the hank winder in the apparatus below the yarn guide.
  2. Thread the yarn through the gate tensioner and adjust the tension until, on pulling the yarn through the gate; it can be observed that the crimp is getting removed.
  3. Clamp the leading end of the yarn to the inner side of the capstan. Wind a hank of yarn with a number of strands chosen so that loads of 0.09 g/dtex and 0.0018 g/dtex can be applied to each strand by means of the sets of hooked weights provided. (The loads and No. of strands for yarns most commonly encountered are listed in the Table given in BIS Handbook.) Clamp the final strand to the outside of the capstan.
  4. Add appropriate lightweight to the strands extending across the prongs of the fork at the lower end of the arm of the hank winder. Add appropriate heavy weight to the lower hook of the lightweight.
  5. Remove the hank and the suspended weight by unscrewing the hank bar from the arm of the winder.
  6. Attach the extra clip support to the hank bar and immerse the hank in the water contained in the measuring cylinder by clipping the two supports over the rim of the cylinder.
  7. Start the stop watch.
  8. Just prior to 2 min from immersing the hank, measure the length of hank as L0.
  9. At 2 min from the time of immersion remove the heavy weight by raising the grid, causing the weight to be released from S-shaped hook.
  10. After a further 2 min. measure the length of hank as Ls.

 Crimp Rigidity = L0 - Ls / L0 x 100

Minimum 10 years part availability assurance from the date of Invoice.

Dispatch Time : Appx. 1 Days.

Rs.18000.00Get Quote or Buy
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