Spinning Review


A New Dimension in Yarn Creation -
Part 1 & 2: fancyflex™ III slub device

The demand for fancy effects with Air-Textured Yarn (ATY) is increasing, so SSM has been working hard to offer yarn manufacturers more possibilities in this field. The result is a whole family of devices for producing fancy yarns with specific effects.

fancyflex™ III slub device: slub effect at its best

SSM has refined and expanded the capability of the slub device. It can now handle two different yarns e.g. different colors resulting in an ATY showing successive slubs of two different colors or sizes. Proper dispatching of the slubs in the woven fabric is critical because this plays an integral role in the final visual effect. If the distance between slubs does not vary enough, an unwanted pattern on the woven or knitted fabric will result. To solve this problem, the cycle time of SSM slub device constantly and automatically changes by an adjustable random factor of up to 100%.


Fabric with successive pink and green slubs.

Rapidly changing for a band effect.

To give yarn manufacturers full control of slub distribution, SSM created the so-called “pattern mode.” It allows users to control the distance variation by editing a sequence of up to 40 steps, or so up to 40 consecutive slubs, that will repeat in a loop, allowing full control of the final fabric design. The pattern mode also gives greater flexibility when processing two colors of slubs because the user can choose which color to use for each of the 40 steps.

This powerful mode of control opens the door to specific designs that are not possible using the more conventional random mode, like slub degrade, which progressively increases or decreases the distance between slubs.

The maximum length of the slub is limited by the fancyflex™ III slub device, as it can only accumulate a certain quantity of yarn before it must be released.


Rapidly changing with short time and a high random factor

With regular time and rapid change using 1 yellow 1 red and 1 blue thread.

A New Dimension in Yarn Creation - Part 2: fancyflex™ VARIO

The demand for fancy effects with Air-Textured Yarn (ATY) is increasing, so SSM has been working hard to offer yarn manufacturers more possibilities in this field. The result is a whole family of devices for producing fancy yarns with specific effects.

In order to be able to create longer effects and new kinds of effects, SSM developed a new device: the fancyflex™ VARIO. Featuring hardware and software specially developed in house, it provides controlled speed disturbances directly to the overfeeding godets, which are perfectly synchronized.

By controlling and changing the overfeed of a single component of a yarn, users can change the resulting dullness and also the final color of the ATY. Used on a single-color ATY, lengths with higher overfeed, which appear duller, will be produced along with lengths with lower overfeed, which appear shinier. Used on a single black or white thread, the shade of the yarn can be changed from darker to lighter – slowly changing, producing a shading effect or a 3D effect. When VARIO is used on several threads of different color, several colors and shades can be produced for a single air-textured yarn.


Using random times.

Using longer ramp times for a shading.

The fancy effects shown beside were created using a rather simple two-step cycle with two different overfeed levels, some with a random time setting.

To further support users in developing unique fancy effects, SSM developed the pattern mode. It provides a sequence of up to 50 different steps. The overfeed level and duration can be set for each step, allowing the creation of special repeating patterns.

 

 
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