MOISTURE TRANSPORTATION THROUGH AIR- JET
“MOISTURE TRANSPORTATION THROUGH AIR- JET AND DRAW TEXTURED YARNS ”
- Introduction
The objective this study is to research the wetness transportation and absorption behavior of various sorts of air jet and draw unsmooth yarns and their comfortness. Polyester, nylon of same filament area unit wont to turn out 100 percent polyester, 100 percent nylon and polyester/nylon homogenized air jet and draw unsmooth yarns. the method parameter was constant for the assembly of those yarns. The wicking behavior were studied by mistreatment capillary rise methodology drop permeableness tester was wont to study the absorption behavior of yarns. And additionally the loops/cm, crimps/cm, bulkiness, and loops instability tests were done and studied within the work. The experiment was conducted as per the subsequent arrange of labor.
Material used
The material of polyester of 126 denier/36 filaments and nylon of seventy denier/36 filaments of fibre, were used for air-jet texturing and draw tuxturising.
Yarn production on air jet machine
Polyester, nylon single part associate degreed polyester/nylon homogenized air jet and draw unsmooth yarns were made on an air jet and draw texturising machines. 2 ends of parent yarns were fed to air jet texturising machine to provide single part air jet unsmooth yarns. One finish of polyester and one finish of nylon were fed parallally to a similar feed roller of air jet texturising machine to provide polyester/nylon homogenized air jet unsmooth yarn and same in draw texturising machine to provide polyester/nylon draw unsmooth yarns. Then for manufacturing 100 percent polyester, and 100 percent nylon yarns in each air jet and draw texturising machines 2 ends of polyester and nylon were fed to a same feed roller of machines. The air jet and draw texturising parameter were as follows:
Air jet texturising process parameter:
- Jet type : ATE-12AC
- Texturising speed : 400 mpm
- Overfeed to jet : 24%
- Air pressure to jet : 8.5 kgf/sq.cm
- Water consumption : 11 t./hr./jet
- Stabilizing stretch : 0.11
- Heater temperature : 200˚c
- Winding under stretch : 0.8 %
Fig.1 : – Air jet texurising machine
Draw texturising process parameter:
- Texturising speed : 400 mpm
- Overfeed : 24 %
- Draw ratio : 1.5 to 2
- Tension before twisting : 14 g
- Tension after twisting : 10 g
- Yarn oiler : 64 mm dia.
- Stabilizing stretch : 0.11 %
- Winding under stretch : 0.8%
- Heater 1 temperature : 200º C
- Heater 2 temperature : 180º C
Fig.2 : – Draw texurising machine
Testing of yarns
The testing of yarns were distributed at customary region conditions of sixty fifth RH and C temperature and tested as per the quality ways for the subsequent properties. The air jet unsmooth yarns were tested for the subsequent structural and physical characteristics.
Yarn physical characteristics:
1.Loops per cm.
2.Physical bulk.
3.Loop instability.
The draw unsmooth yarns were tested for the subsequent structural and physical characteristics.
1.Crimps per cm.
2.Physical bulk.
3.Loop instability.
The air jet and draw unsmooth yarns were tested for :
1.Vertical wicking height.
2.Drop permeableness time
Details of yarn testing procedures
Yarn structural characteristics like loops per cm, loop height and core diameters
Loops per cm, loop height and core diameters were measured mistreatment projectina magnifier at 10x magnification. One cm yarn was marked at 2 meters interval on the length of unsmooth yarn. The marked one cm yarn portion was placed on a slide and its core diameter was measured on the projection. Then , another slide was placed on a yarn in order that the yarn portion was compressed between slides .Number of loops and their height was measured on the image obtained on projection fifty such portion were checked and average reading was taken for loop frequency, loop height and core diameters.
Fig.3 : – projectina magnifier
Physical Bulk
Many of the unsmooth yarn and yarn characteristics depend upon the air jet unsmooth yarn bulk. as a result of the majority in associate degree air jet unsmooth yarn is developed by the physical transcription of the filament instead of by the applying of warmth, the majority should be characteristics by the increasing in specific volume .modified DuPont methodology was wont to live the majority of air jet unsmooth yarn .feed yarn cylindrical package of 100 percent polyester was fashioned by feeding four package of polyester yarn underneath a set tension level at a winding speed of one hundred fifty mpm .to form remainder of the feed yarn package one among the polyester yarn package were fashioned. unsmooth yarn cylindrical package were additionally ready underneath a similar tension and package were measured the majority of unsmooth yarn was calculated mistreatment the subsequent relationship
Physical bulk% = ×100%
Loop instability
unsmooth yarn loop instability play a very important role in deciding the conclusion unsmooth yarn bulk in yarn. Higher instability cause higher structural irregularity of unsmooth yarn throughout more process therefore moving fiber look. Loop instability was measured by DuPond methodology. The testing instrument consisted of a vertical board with a clamp at the highest type that the air jet unsmooth and draw unsmooth yarn was suspended. One meter below this clamp was the creating notch and at a lower place this a cm scale .A weight of zero.088cN/tex was adorned at the tip of yarn and left on the specimen throughout the check. One meter length on this tensioned specimen was marked and therefore the specimen was then subjected to higher load of four.4cN/tex for thirty second .after the upper load was removed, mistreatment the one meter mark because the reference .the permanent extension proportion was a live of the loop instability .20 reading were taken for every sample to get the common instability p.c
Vertical wicking height
Fig.4 : – vertical wicking height
Drop permeability time
The equipment shows in figure the 2 ends of yarn sample were hooked horizontally to 2 supports and weight was endured the sample
A weight of ten grms was adorned at purpose A on the sample to impart tensile force within the yarn in adequate the burden. The custom created little pipet was wont to live water to associate accuracy±0.5mg. Water drop to wick into the yarn and disappear was measured as drop permeability time. 5 tests were conducted for every sample and also the average of that was calculated. This procedure was perennial for 10gms, 20gms and 30gms tensile force.
The wicking rate of each filament yarns will increase once texturising method. The 100 percent polyester air unsmooth yarn shows a lot of wicking rate than alternative unsmooth yarns. The 100 percent nylon air unsmooth yarn shows all-time low wicking rate. The distinction within the wicking rate of air-textured and draw unsmooth yarns is because of the distinction in their physical bulk, loop frequency, crimp frequency and wet region. The hydrophobic air unsmooth yarn with higher bulk and fewer range of surface loops show higher wicking rate.
The blending unsmooth yarns show a lot of wicking rate than their parallel untextured yarns because of the interfillment areas created by air-jet and draw texturising method. The wicking rate of polyester air unsmooth yarn decreases once mixing it with nylon yarn because of the decrease in physical bulk and increase within the loop frequency. conjointly the wicking rate of polyester draw unsmooth yarn decreases once mixing it with nylon yarn because of the decrease in physical bulk.
Water drop permeability time will increase with the rise in tensile force within the unsmooth yarn. The hydrophilic nature of fiber has a lot of influence on water permeability time than the amount of loops and crimps frequency.
One of the foremost necessary blessings of unsmooth yarn is that it provides smart comfort because the results of the air entrapped between the interstices of the yarn. It additionally provides higher pill resistance, dimensional resistance and improved crease resistance. they need fuller and higher look.
Texturizing processes were originally applied to artificial fibres to cut back such characteristics as transparency, slipperiness, and also the risk of pilling (formation of little fibre tangles on a cloth surface). Texturizing processes create yarns a lot of opaque, improve look and texture, and increase heat
Texturing is that the main technique to supply the bulked filament yarns. A unsmooth yarn is created by introducing sturdy crimps, coils, and loops on the length of the filaments. As unsmooth yarns have AN magnified volume, the air and vapour porosity of materials made of them is beyond that from flat yarns.
Texturing method wherever the yarn goes around a magnetic spindle (the PIN) that makes a twist that is then mounted by heat. Texturing method wherever air streams and air mass create the filaments during a yarn tangling along – ensuing the yarn to be hairier, therefore feeling softer and a lot of sort of a small stuff.
The following varieties of unsmooth yarns area unit distinguished by production technique, properties, and use: high-tensile, low-tensile, crimped, loop, shaped, bicomponent, combination, and high-bulk yarns. High-tensile yarn is named elastik within the USSR; abroad, the brand name “Helanca” is sometimes used.
CONCLUSION
The wicking height of parent yarn, air unsmooth and draw unsmooth were measured as per DIN 53924. A yarn sample of 23cm length prepared at C, 65%RH, was suspended vertically with hooked up to the lower finish of yarn immersed in reservoir of 200ml water.2gms load was hooked up to the lower finish of the yarn and ink was another to the reservior of water for trailing the instant of water. the peak reached by the water within the yarn on top of the water level within the reservior was measured at associate interval of five,10,15 and twenty minutes. 5 tests were conducted for every sample and also the average of that was calculated .the same procedure was folled for yarn sample conjointly.
FUTURE SCOPE
The air-jet unsmooth and draw un smooth yarns having a lot of wicking and wet permeability as compare to its untextured yarns. The air-jet and draw un smooth yarns is then use for the producing of material and their comfortness properties square measure to be cheked for article of clothing purpose.
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