Hank dyeing machine

PRESENTATION

1. Yarn Dyeing Machine (Hank Dyeing Machine)
By:AsayeDessie

2. Dyeingisaprocessofcoloringtextilematerialsfor
givingattractivelook.
Dyeingisaprocessbywhichafiber,yarn,fabric,
garmentsandanyothermaterialsthatcometocontactof
dyebypresenceofauxiliaries.
Dyeingoperationisdonebydifferenttypesofdyeing
machine.
Themachinewhichisusedtodyeingorcoloringof
materialslikefiber,yarn,fabric,garmentsoranyother
materialsiscalleddyeingmachine.
Dyeingmachinescomeinallshapesandsizesto
accommodatethevariousformsandquantitiesoftextile
materials.
Introduction
Dyeingisaprocessofcoloringtextilematerialsfor
givingattractivelook.
Dyeingisaprocessbywhichafiber,yarn,fabric,
garmentsandanyothermaterialsthatcometocontactof
dyebypresenceofauxiliaries.
Dyeingoperationisdonebydifferenttypesofdyeing
machine.
Themachinewhichisusedtodyeingorcoloringof
materialslikefiber,yarn,fabric,garmentsoranyother
materialsiscalleddyeingmachine.
Dyeingmachinescomeinallshapesandsizesto
accommodatethevariousformsandquantitiesoftextile
materials.
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3. Dyehouse machineryrepresents a large capital
investment.
Theimportant factors influencingthe success of a
dyehouse are thecorrect choice of equipment, and its
effective use and maintenance.
Modern machines often haveprogrammable
microprocessorsforautomatic controlofthe process
variables, particularly thedyeing temperature.
Typesof dyeing machine according totextile material:
A. Fiber dyeing machine
B. Yarn dyeing machine
C. Fabric dyeing machine
Conti…
Dyehouse machineryrepresents a large capital
investment.
Theimportant factors influencingthe success of a
dyehouse are thecorrect choice of equipment, and its
effective use and maintenance.
Modern machines often haveprogrammable
microprocessorsforautomatic controlofthe process
variables, particularly thedyeing temperature.
Typesof dyeing machine according totextile material:
A. Fiber dyeing machine
B. Yarn dyeing machine
C. Fabric dyeing machine
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4. Hank dyeing machineHank dyeing machine
Yarndyeingmachineare:HankandPackagedyeing
machines.
Itsthedyeingoftheyarnsbeforetheyhavebeenwovenor
knittedintofabrics.
Itsusedtocreateinterestingchecks,stripesandplaids
withdifferent-coloredyarnsintheweavingprocess.
Inyarndyeing,dyestuffpenetratesthefibersinthecoreof
theyarn.
Packagedyeingrouteismuchsimpleandeasytofollowfor
dyeingofdifferentkindsofyarn.
Yarndyeingmachineare:HankandPackagedyeing
machines.
Itsthedyeingoftheyarnsbeforetheyhavebeenwovenor
knittedintofabrics.
Itsusedtocreateinterestingchecks,stripesandplaids
withdifferent-coloredyarnsintheweavingprocess.
Inyarndyeing,dyestuffpenetratesthefibersinthecoreof
theyarn.
Packagedyeingrouteismuchsimpleandeasytofollowfor
dyeingofdifferentkindsofyarn.
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5. But,stillthehankrouteispopularforcertainqualities,
therearetworeasonsforthis,
I.Thequality and nature of the productdoes notallow to
follow package route.
II.Thepackage route is non-practical and non-economical.
i.Singeing(formercerized cotton yarns)
ii.Reeling
iii.Mercerization (for mercerized cotton yarns)
iv.Dyeing
v.Hydro extraction or squeezing
vi.Drying
vii.Hank to cone winding
i.Singeing(formercerized cotton yarns)
ii.Reeling
iii.Mercerization (for mercerized cotton yarns)
iv.Dyeing
v.Hydro extraction or squeezing
vi.Drying
vii.Hank to cone winding
Processsequence for yarn dyeing in hankform
i.Singeing(formercerized cotton yarns)
ii.Reeling
iii.Mercerization (for mercerized cotton yarns)
iv.Dyeing
v.Hydro extraction or squeezing
vi.Drying
vii.Hank to cone winding
i.Singeing(formercerized cotton yarns)
ii.Reeling
iii.Mercerization (for mercerized cotton yarns)
iv.Dyeing
v.Hydro extraction or squeezing
vi.Drying
vii.Hank to cone winding
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6. The skeins of yarn usually hang from poles fitted
into a frame that can belowered into the dye bath.
Rodsinserted at the bottom of the frame keep the
skeins fully extended.
Aspare frameallows preparation of one load while
another is in the dyeing machine.
The frame has aperforatedtop and bottom.
The dye liquor gently circulates eitherdown
through the hanks, or in thereverse directionif the
machine is completely filled.
Conti..
The skeins of yarn usually hang from poles fitted
into a frame that can belowered into the dye bath.
Rodsinserted at the bottom of the frame keep the
skeins fully extended.
Aspare frameallows preparation of one load while
another is in the dyeing machine.
The frame has aperforatedtop and bottom.
The dye liquor gently circulates eitherdown
through the hanks, or in thereverse directionif the
machine is completely filled.
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7. Thesteam and cooling pipes are at the bottom of this
compartment,dyesand chemicals are also added here.
This type of dyeing machine is frequently referred to as
aHussong machine.
For level dyeing, equal exposure of all the yarn in the
skeins to the circulating dye liquor requires even
packing of the skeins.
Upward circulation of the liquor in the machine lifts the
yarns in contact with the upper poles, otherwise these
willdye palerbecause ofpoor contact with the
liquor.
Conti…
Thesteam and cooling pipes are at the bottom of this
compartment,dyesand chemicals are also added here.
This type of dyeing machine is frequently referred to as
aHussong machine.
For level dyeing, equal exposure of all the yarn in the
skeins to the circulating dye liquor requires even
packing of the skeins.
Upward circulation of the liquor in the machine lifts the
yarns in contact with the upper poles, otherwise these
willdye palerbecause ofpoor contact with the
liquor.
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8. Conti…
Figure: Schematic diagram of a Hussong type hank dying machine
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9. Conti…
Theliquor ratio isusually rangesfrom24:1 to 30:1.
Highliquor ratiosrequires:
Greateramounts of dyeing assistantsand
Consumemore steamthan in package dyeing
machines.
The rates ofheatingandliquor circulationare low.
Hussong machine isless productive and less
economicthan dyeing yarn wound into bobbins, itis
widely used for dyeing skeins ofwoolandacrylic
yarn.
Theliquor ratio isusually rangesfrom24:1 to 30:1.
Highliquor ratiosrequires:
Greateramounts of dyeing assistantsand
Consumemore steamthan in package dyeing
machines.
The rates ofheatingandliquor circulationare low.
Hussong machine isless productive and less
economicthan dyeing yarn wound into bobbins, itis
widely used for dyeing skeins ofwoolandacrylic
yarn.
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10. Conti…
The Hussong machine preserves the yarnbulkand
handle.
Acrylic yarns, in particular, mayshrinkin thehot
dyebath,opening channelswithin the packed skeins.
The machine usuallybeover-packedso that after
shrinkage has occurred the yarns just fill the machine
with even circulation.
Whenshrinkageofhighbulkacrylicyarnsislikely,
anybottompolesareinitiallyplacedseveral
centimetersabovethebottomoftheextendedskeins.
The problem ofHussong machine is:
The Hussong machine preserves the yarnbulkand
handle.
Acrylic yarns, in particular, mayshrinkin thehot
dyebath,opening channelswithin the packed skeins.
The machine usuallybeover-packedso that after
shrinkage has occurred the yarns just fill the machine
with even circulation.
Whenshrinkageofhighbulkacrylicyarnsislikely,
anybottompolesareinitiallyplacedseveral
centimetersabovethebottomoftheextendedskeins.
The problem ofHussong machine is:
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11. Conti..
Contact between the solution and the yarns touching
the upper poles can beavoided by pulsating the
liquor flow.
Thedyeliquorcirculatesthroughupward-pointing
holesinthepolesholdingtheskeinswhichcauses
unleveldyeingwithdyesthatdonotmigratereadily.
Amajor reason for the decline of hank dyeing is the
problem ofunwinding.
After dyeing, the wet hanks arecentrifuged,hung
on polesorhooks, andpassed through a hot air
oven.
Theymust then be mounted on arotating frameto
unwind the yarn.
Contact between the solution and the yarns touching
the upper poles can beavoided by pulsating the
liquor flow.
Thedyeliquorcirculatesthroughupward-pointing
holesinthepolesholdingtheskeinswhichcauses
unleveldyeingwithdyesthatdonotmigratereadily.
Amajor reason for the decline of hank dyeing is the
problem ofunwinding.
After dyeing, the wet hanks arecentrifuged,hung
on polesorhooks, andpassed through a hot air
oven.
Theymust then be mounted on arotating frameto
unwind the yarn.
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12. THANK YOU!!!THANK YOU!!!
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