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STORAGE

Before use of spandex yarn, we recommend 24-hour acclimatization period in the workroom ofproduction site and box should be kept open to equilibrium with the environment. his reduces yarnbreaka!e and will obtain the peak efficiency.

"ormally in warehouse #pandex yarn should be stored in its packin!. he packin! protects the spandexyarn a!ainst the effects of li!ht, $% li!ht, "&x !as and other pollutants.

he temperature in the stora!e room should ran!e between 4 and 2'()* relative air humidity should be

minimum + and maximum . /f the room is too dry or too warm, the normally very !oodprocessin! 0roperties of spandex yarn may deteriorate. /f the temperature is too low, elasticity becomeslow. his ne!ative effect increases proportionally to the time the yarn is stored under unfavorableconditions. 1dequate stora!e conditions are most for perfect processability.

arns and ready-made articles containin! spandex should be stored in suitable packin!. he climaticconditions should be the same as for the stora!e of the bobbins.

#helf life of spandex from production date

3he shelf life of spandex yarn could be chan!ed by storin! conditions.

he quality of products will be affected for a lon!-term stora!e. /t is better to adopt the mana!ementsystem first in first out - the products enterin! warehouse first shall be used first

HANDLING

on5t use sharp tools to remove or unseal external packin! of products

he spandex cones shall be handled with care to avoid dama!e durin! mountin!, the cones shall beprotected from web-line or slou!h-off resulted from scratch, or the product quality would be impaired.

6hen fetchin! spandex, don5t catch or touch the yarn reel 7/t will cause yarn to break and fall off8

below 20de 6 months

30de & 40de 8 months

over 70de 1 year

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6hen loadin! the spandex bobbins to your machine, please check whether there isundesirable curled form.

he system of loadin! spandex yarn on circular knittin! machines is as,

USAGE

9ach box carries :ot number. on;t mix lot numbers and use. #pandex with differentspecifications or different lot numbers would have different physical properties andthey shall not be mixed in use, otherwise width variation or wrinkles of fabric wouldoccur.

/n case of warp knittin!, it is classified by set number. o not mix set numbers.

/t is su!!ested that spandex with the same wei!ht bobbins should be used for stricterrequirements.

urin! use of spandex, the environmental temperature and ?> respectively.

$se within a proper draft ratio of #pandex. 9xcessive hi!h draft ratio would result in

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breakin! durin! processin! and weavin! and impair product quality. he optimal draftratio for 4 and ' is A+.> times. 6ith a speed > meterCminute of )overin!

arn, the draft ratio should be A+. times.

he set of twisted yarn should reach the covera!e rate of spandex to the optimum.state.

#pandex should be kept at a proper feed tension* spandex yarn shall be kept in themoderate state. /t is recommended that the best state of tension shall be controlled toDCD denier 7by the !ram8 or spandex would break and dull bar would occur on fabricdurin! knittin!.

he yarn nozzle and sinkin! point shall be lessened for the yarn feedin! device ofspandex and the yarn wheel shall be furnished.

here shall be active conveyin! appliance for the spandex yarn and spandex in useshall be of the same size.

1void hi!h temperature and hi!h speed. #ince the wire loop is easy to !et linty and

woolly !rain, it needs to be replaced re!ularly. Eor bleachin! of spandex blended fabric, the consumption of bleachin! a!ent shall. 1s

a rule, be reduced and no chlorine bleachin! a!ent shall be allowed 7if chlorinebleachin! a!ent can5t be avoided, 1nit-chlorine #pandex is recommended8. heblended fabric with cotton shall be bleached with hydroperoxide under atmosphericpressure and with less alkaline.

urin! finishin!, the temperature for dry heat-settin! and wet heat-settin! shall notexceed D> and D2> respectively and the time for dry heat-settin! and wet heat- settin! shall be 2>-+> seconds and .> hour respectively.

"oteF he heat-settin! temperature in finishin! is dependent on model of settin! machine,

size of the yarn and modality of the yarn in fabrics, which shall be decided throu!h test onthe basis of D and D2 for dry heat-settin! and wet heat-settin! respectively.