Determination of the Number of Folds in Wool Fiber
  • Determination of the Number of Folds in Wool Fiber



    Kıvrım fibers around their axesımakes helical motion. k in fibersıvrım countısı increasedıThe ability of the larger fibers to hold on to each other will also increase.fiedstronger than threads are produced.

    As the curvature of the wool fiber increases, the softness of the fabric increases. 

    The higher the number of folds per unit length, the higher the quality of the wool. 

    Generally, the thinner the fiber, the greater the crimp; fine wools are softer than thick wools. 

    Softness is felt by hand. As it is known, the hairs on the wool shirt are found in groups. 


    henceı of fibers found togetherıvrım şseparate shapes and cellsıca kıvrımlı became in corrugated wavesğfrom flourşpushy sheepın bowl şmake crops and shirtsıhomeı different from each otherı It is possible. This is how your wool corrugation also called.


    In the classification and control of wool, especially the forms of ringlet waves resulting from corrugation are taken into account. 

    When examining the fiber length in wool, it is seen that there are significant differences between their actual lengths and their normal lengths. 

    This difference is due to the fact that the fibers are more or less crimped. 

    The folds on the wool fibers are of great importance in yarn making. 

    The fine fibers are very crimped. The number and shape of the folds determine the quality of the wool. 

    Three types of folds in wool fiber There is a (corrugated) variety. 

    In practice, the number of folds corresponding to the length of the fiber loop is important, not a single fiber. 

    In single wool fibers, the folds are also divided into open, normal and high crimped according to their shape.



    1-Flat fold:4–5 folds/cm 

    2-Normal fold: 4–9 folds/cm 

    3-High fold: 12–13 folds/cm


    When the fold forms are taken into account, it is understood that the number of folds along the fiber is different and different from each other. 

    Generally, there is a close relationship between the number of folds and the fineness of the wool, fine fiber wool is more crimped. 

    Conversely, as the wool gets coarser, the waveforms begin to open and expand. 

    In very coarse fibers, the waves disappear completely and the tresses become straight. 

    While determining the quality of the wool, the number of folds and the shape of the folds are taken into account. 

    However, the occurrence of unfolded or slightly folded (Doggy) fleece in some fine-fleshed sheep breeds is due to the disruption or absence of these periodic movements in the follicles. 

    Many people estimate the heritability of corrugation to be between 40-50%.

    It is one of the most important properties affecting the processing of a textile fiber. 

    This fiber characteristic can be expressed as the number of curls per unit length, or it can also be expressed as a measure of the distance of two points on the fiber when the fiber is in the curled state, as measured by laying the fiber on a flat level and pulling it, and compared to its length in the curled state. 

    The greater the crimp, the greater the difference between the actual length of the fiber and its natural length. 

    As the number of folds in the fibers increases, the ability of the fibers to adhere to each other will increase, resulting in stronger yarns. 

    The most crimped natural fiber is wool fiber. 

    For this reason, it is important to determine the number of folds in the wool for yarn formation. 

    The shape and number of folds in the fibers affect their ability to be yarn. 

    The threads of the highly crimped fibers are thin, strong and smooth. 

    It is seen that these properties are due to the fact that the fibers can be well wrapped with each other during spinning.

    Kıvrım unit length ba what the hellşin kıvırcık (helix, curl) countısı Also referred to as.  

    A curled fiber appears shorter than its natural state. 

    The difference between the curly condition of the fiber measured by flattening and pulling is expressed as %.


    Kıvrım Measuring Deviceı (Crimpmeter) with Kıvrım Detection 

    To measure the number of folds (wool and textured man-made fibers) in fibers crimping device used. 

    The crimpmeter consists of a metal plate with 9 or 14 equal corners and toothed edges. 

    Each of the equal sides is 1 inch tall, or 2.54 cm long, and contains from 5 to 18 teeth, respectively. 

    The number of folds of fibers or loops is measured with the help of these toothed edges. 

    When it is desired to measure the bends of the fiber or fiber bundle, the sample is attached to the teeth on the edges of the device. 

    It is concluded that the curves of the sample are more suitable for the teeth on the edge of the device, the more folds are found in 2,54 cm of that sample. 

    On these devicesıvrımlı and levelşknurledş though the length differencesıfrom kıvrımlılıalso kğmale has been detectedğunit length k such as iıvrım countısı also determined byıvrımlılıalso kğcan be detected.


    K in fibersıvrım countısını Detecting with a Straight Ruler  

    If the crimpmeter is not found, the k in the fibersıvrım countısını It is also possible to measure with a straight ruler. 

    Thus 1 cm or 1 inch longğthe k inıvrım countısıkıvrımlı and hungryılmbusiness lengths of fibersı determined by measuring and dividing by twoır. 

    These are a simpler şIf expressed in known dimensions in the figure, the length of the k is 1 cm.ıvrım countısı can be displayed as




    by %AM, 20% 919% 2016 00%:%May in Quality control

Determination of the Number of Folds in Wool Fiber