This document provides information on various slub and fancy yarn production systems from SKAAT. It describes the SKAAT Digital Slub System for controlling slub parameters like diameter, length and interval. It also outlines models for very long ring frames, multi-effect yarns, core yarns including soft, rigid and twin core, roving injection, twin safe systems, rainbow yarn with multiple colors, and a slub tester to analyze yarn properties. The systems aim to produce different slub and fancy yarn styles through control of drafting and roller movements.

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3. Contents
SKAAT DIGITAL SLUB SYSTEM
SKAAT TWIN SAFE
SKAAT FANCY YARN FEATURES
SKAAT INJECTION SLUB
SKAAT CORE.
SKAAT RAINBOW
SKAAT SLUB TESTER
| SKAAT Fancy Effects version 1.4
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7. SKAAT DIGITAL SLUB SYSTEM
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SKAAT DIGITAL SLUB SYSTEM
The term‘SLUB’is described as‘Thick Place’in a yarn. In slub yarn,‘Slubs’are deliberately created to produce a desired pattern
in the yarn. By altering the slub yarn parameters such as slub diameter, slub length and yarn length or slub interval, one can
produce more variety of slub yarn with different style.
DS3L : This machine is specially designed for very long ring frames with more than 1200 spindles. In this model three servo
system are used to drive the rollers.
SKAAT DS3L - VERY LONG RING FRAMES

12. SKAAT MULTI EFFECT (TCS 6, TCS 4,TCS 2L & TCS 2)
SKAAT Fancy Effects version 1.4
SKAAT MULTI EFFECT
One can produce variety of fancy yarns from the above
models.
• Multi Count – Different counts can occur in one yarn
with the same TPI.
• Multi Twist – Different Twist can be applied with the
same yarn count.
• Multi Effect – Combination of Multi Count, Multi Twist
and slub effects in one yarn.
In addition to the Slub servo drive one more servomotor is
introduced to drive the front fluted roller. So entire drafting
drive is controlled and governed by our special software,
which helps to produce variety of multi effect fancy yarn by
accelerating or decelerating all three fluted rollers at a time.
Count changes and count corrections can be done without
wheel changes on ring frame.
Long Ring frames having Duoflex drive at‘OFF end’needs
3 Servo motors to run the above effect yarn.
Short Ring frame up to 600 spindles and medium ring
frames up to 1008 spindles requires 2 Servo motors to run
multi effect yarn.

15. SKAAT CORE
SKAAT core yarn system is designed on a depth knowledge in converting ring frames for high quality special yarns. Soft core,
Rigid Core and Twin core are the models are available for producing core yarn for different applications.
SKAAT CORE – SOFT
Comprises of feeding unit, core stopmotion, gaiting unit, roving stopmotion, traversing and control unit.
SKAAT SOFT CORE
core
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16. A pair of feed rollers of 50mm dia is made up of special material and dark surface hardened with antistatic coating driven by a SKAAT
servo system for precision electronic draft regulation. The servomotor gets digitally synchronized signal from front fluted roller by a
special electronic device. The Lycra package rests on the feed roller for individual spindle and a package lifting device is
provided for each spindle for stop motion purpose.
FEEDING UNIT:
Gaiting unit is provided for every spindle and one end of the gaiting arm is pivoted on the central fulcrum for effective traversing of
Roving and Lycra at a time. At the other end a self lubricated gaiting roller is provided to guide the Lycra filament exactly at the
centre of the spinning triangle. Sensors are provided ito ensure the presence of filament during running.Grub screw adjustment is
provided for centering correction.
GAITING UNIT
SKAAT SOFT CORE
SKAAT Fancy Effects version 1.4
Gaiting roller Model :1
Seperator
Gaiting roller
with grub screw adjustment

17. Complete new traversing rail system is introduced to give traverse motion to the Roving and Lycra guiding unit by
mechanical system or electronic system. In electronic system, an integrated separate stepper motor received signal
from CPU and gives traverse motion to the traversing rail and assist Lycra material will be at the centre of the yarn consistently.
TRAVERSING DEVICE:
SKAAT SOFT CORE
Gaiting roller Model :2 (self centered)
Hard core material is fed through self centered gaiting
roller or self lubricated grooved wheel.
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18. The effective roving stop motion stops automatically the fibre input when a filament break is detected or missing. A special
type of cutter is provided behind the back roller nip for each spindle. Since both Lycra and Roving stop motions are inter
connected, filament break is detected by the sensor inside the gaiting roller and this signal transfer to the respective roving
cutter through CPU. So the roving input is automatically stopped by gripping and cutting off at the back roller nip. This
guarantees automatic feed-in after re-start.
ROVING STOP MOTION
ROVING CUTTER
SKAAT SOFT CORE
SKAAT Fancy Effects version 1.4
Spring Compression position
Roving running position
Roving cutting position

21. SKAAT RIGID CORE
In SKAAT Rigid core, a special creel is supplied to hold
rigid core material and its stretch is controlled by an
external tensioning device. An effective stop motion with
cutting device is to stop the roving whenever the core
material cuts or exhausts.
If the roving is missing (or) exhausts rigid core supply will
be stopped by a special cutting and clamping device.
Since both the stop motions are inter connected.
FEATURES:
? Supervision of each filament by means of sensor control
? Lamp indication for missing of filament and roving
? Perfect and Precision insertion system always maintain
the elastane fibre inside the yarn
? “Roving Stop motion”stops automatically the fibre flow
in each spindle when a filament break detected.
? Touch screen interface allow to modify, regulate and
store the variable data required for core yarn preparation
? As core material draft is controlled by servo motor, Ring
frame can be running with variable speed which results
uniform core material in yarn.
STOP MOTION
SKAAT RIGID CORE
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23. SKAAT TWIN CORE
It is one of the versatile system of core yarn
manufacturing, to produce special fabric for different
end use. It is a combination of soft and rigid core both
the systems are incorporated in one ring frame, core
stretch is controlled independently by individual feeding
and resultant yarn can be produced at different stretch
levels.
SKAAT introduces a special kind of advanced Industrial
touch computer with hassle free programming that
controls the yarn to get uniform core material content.
Recently various filaments have been developed to enhance soft
stretch with renewed comfort by reducing pressure on the body.
Most of the fabrics made from these yarns are mainly used in
swim suits, bathing suits, net body suits, lingerie, pencil fit
denim and jeans, sacks, leggings, socks, compressing garments
such as cycling shorts, surgical hose, wrestling singlet, etc.
SKAAT TWIN CORE
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27. SKAAT ROVING INJECTION (2 base yarn and 1 injected roving)
‘Two Base Yarn Roving' will be directly fed through the
middle roller and it is continuously producing 'base yarn' by
the machine drive. One set of additional roving guide will be
provided at the back zone to guide the base yarn Roving.
Advance Digital encoders helps to monitor the speed of
Front roller and Back roller separately and act as 'Slub
missing Stop Motion'.Touch industrial computer with 7”
wide screen is provided for easy and hassle free
programming.
SKAAT DOUBLE ROVING INJECTION
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29. This system is a combination of Spinning and doubling
process at Ring Frame. For Base Yarn portion, two cone
yarn (single yarn) and For 'Injection portion' a colour
roving bobbin to be used. Instead of machine drive, a
servo motor is used to drive the 'middle' and 'back' bottom
fluted roller through SKAAT Variater gear box.
While running 'base yarn 'portions, these two rollers are
remaining stationary condition, and gets intermittent
motion only at the time of 'injection'. A special creel is
provided to hold two single yarn cones for each spindle
and it is passed directly behind the front roller nip through
the yarn guide roller (placed over the front top
roller).Depending upon the selected slub pattern, base yarn
produced by the doubling of two single yarns due
to continuous rotation of front roller. At the time of injection,
servo motor comes into action and it gives
intermittentmotiontobackandmiddleroller.
So the roving material is drafted and injected over the surface
of the base yarn at the selected interval. From the two models,
one can produce variety of injection slub yarns such as
Regular, Random, Incremental and manual slub.
? Fully integrated system
? High standard level of performance and productivity.
? Great versatility and flexibility.
? Effective stopmotion are provided to avoid“slub missing in
the yarn”
? No maintenance is required for SKAAT system.
YARN INJECTION PROPERTIES.
SKAAT YARN INJECTION SYSTEM:
SKAAT YARN INJECTION
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31. SKAAT TWINSAFE:
SKAAT TWINSAFE is an art of producing twisting of yarn at
spinning stage, winding & doubling process is completely
eliminated, which results superior yarn quality with lower
manufacturing cost.
Two sets of special roving guides are provided behind the
back roller and at the back zone (behind middle roller) to
guide two rovings separately for each spindle. Creel
conversion kit (Optional) is supplied along with this system
to accomdate two sets of roving bobbins.
SKAAT BASIC
In addition to the basic model, SKAAT SECURED system is equipped
with an effective and advanced stop motion. System stop
automatically the feeding , when a roving break is detected or
missing. To monitor the presence of roving, two individual roving
sensors are provided for each spindle and both are interconnected.
A special type of roving cutter is provided behind the back roller
nip. If a particular bobbin breaks or exhaust, the absence of roving
is monitored by the roving sensors and gives direction to the roving
cutter to action. So roving input is automatically stopped by
gripping and cutting off at the back roller nip by the roving cutter.
SKAAT SECURED
TWIN SAFE PROPERTIES.
Superior yarn strength
Good scratch resistance
High resistance to yarn slippage
Evenness yarn in doubling process
Cost effective manufacturing process.
Doubling and twisting in one operation.
Excellent evenness as a result of doubling
Very low hairiness values which results smooth yarn
SKAAT TWINSAFE
Control Unit
Roving stopper
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33. Control Unit
SKAAT RAINBOW
Rainbow system helps to produce multi coloured single
yarn at ring frame, by feeding upto 3 simplex bobbins for
each spindle.
Different combinations can be tried to produce variety of
fancy yarn with this system.
Single yarn with multi colour.
Single yarn with different raw material.
Single yarn with combination of multi coloured and
different raw material.
Stop motion are available for individual roving (optional).
Special type of roving guides which helps in producing
the yarn with good quality.
Creel conversion kit along with additional row of bobbin
holders to accommodate 4 simplex bobbins per spindle.
Special type of roving guides are placed behind the back
roller and the middle roller to guide four roving with out
mixup. Individual roving stop motion is option. Fabric
produced from this yarn gives very good aesthetic look.
SKAAT RAINBOW
Multi coloured Single yarn.
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35. SKAAT SLUB TESTER
SKAAT slub tester is used to test the slub yarn and multi
effect yarn to assess the quality, slub pattern and multi
effect pattern of the yarn.It consists of feeding unit,
measuring unit and control unit. In measuring unit, a pair
of rubberized roller passes the yarn to the sensing zone
which consists of a highly precision laser sensor. Yarn
measuring speed can be varied.
At the control unit we can obtain the following results.
• Slub Mass
• Slub Length
• Yarn Length (or) Slub intervel
• Slubs / meter
• Slubs C.V%
• Mass diagram and scatter diagram
• Spectrogram
• Sequential mass diagram
By using Pendrive, one can produce slub yarn with same parameter as per the result obtainedfrom the Slub Tester by copying
and transferring data’s to SKAAT fancy yarn attachments or otherwise data to be transfer to the machines from the tester
through wifi network.
SKAAT SLUB TESTER
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