This document provides information about a stenter machine, including its parts, functions, working process, types, and specifications. It discusses that a stenter machine is used to stretch and dry fabrics while controlling various properties like width, shrinkage, and moisture. It stretches fabric using clips or pins connected to an endless chain and dries it using heat from burners in multiple chambers. Parameters like temperature, dwell time, and over/underfeeding can be controlled. The document also provides specifications of a particular Bruckner stenter machine.

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Stenter Machine
Part s, Funct ions and Working Process

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Prepared By: JUNNUN MOJUMDER
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ID: B201914004
9th Batch (Session: 2018-19)
Department: Apparel Engineering
E-mail: mdjunnunmojumder@gamil.com
Shahid Abdur Rab Serniabat textile
Engineering College, Barisal

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 S t e n t e r i s t h e m o s t e x p e n s i v e a n d
i m p o r t a n t f a b r i c d r y i n g a n d f i n i s h i n g
m a c h i n e .
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 I t i s a m a c h i n e o r a p p a r a t u s f o r
s t r e t c h i n g o r s t e n t e r i n g f a b r i c s .
 I t i s a l s o k n o w n a s a ‘ t e n t e r ’ i n t h e
w o o l e n i n d u s t r y .
Definition
 T h e p u r p o s e o f t h e s t e n t e r m a c h i n e i s t o
b r i n g i n g t h e l e n g t h a n d w i d t h t o p r e -
d e t e r m i n e d i m e n s i o n s a n d a l s o f o r h e a t
s e t t i n g a n d i t i s u s e d f o r a p p l y i n g f i n i s h i n g
c h e m i c a l s a n d a l s o s h a d e v a r i a t i o n i s
a d j u s t e d .
 I t i s a c o s m e t i c f i n i s h i n g m / c

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Objective
 To S t r e t c h i n g o r s t e n t e r i n g F a b r i c s .
 To b r i n g i n g t h e l e n g t h a n d w i d t h t o
p r e d e t e r m i n e d i m e n s i o n s
 F o r h e a t s e t t i n g o n f a b r i c .
 Al s o u s e d f o r a p p l y i n g f i n i s h i n g c h e m i c a l s
 To a d j u s t s h a d e va r i a t i o n
 To s t r e t c h t h e F a b r i c w i d t h w i s e a n d t o
R e c o ve r t h e U n i f o r m w i d t h .
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Function
Imparting a particular mechanical finish affecting
appearance and feel, commonly known as stenter
finish.
Heat setting is done by the stenter for lycra fabric,
synthetic and blended fabric.
Width of the fabric is controlled by the stenter.
Applying and fixation of several finishing agents by
stenter machine.
Applying and fixation of several finishing agents by
stenter machine.

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Function (Cont.)
 GSM of the fabric is controlled by stenter.
 Spirility controlled by the stenter.
 Fabric is dried by the stentering process.
 Shrinkage property of the fabric is controlled.
 Moisture of the fabric is controlled by the stenter.

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Important Zones
& Parts
1.Back Zone:
Guider
Two baths & Padder or squeezer
Auto centering
2. Middle Zone
Bianco or Mahlo arrangement
Chain & clip system
Chambers (Contains blower, heater, recovery)

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Important Zones
& Parts
3. Front Zone:
 Over feed Zone
 Plaiting
 Static Electricity
4. Extra Attachment
 Mahlo attachment for Bowing Control
 Selvedge gumming device
 Selvedge cutting device

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Types of Stenter m/c
• Gas burning Stenter: Heat is produced from burning
GAS is called Gas burning stenter.
• Thermal oil heating stenter: Heat is produced from
thermal oil is called thermal oil burning water.
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Working Principle
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Component Of
Stenter Machine
•Paders
•Weft straightner (Mahlo)
•Burners 10
•Heat recovery
•Attraction rollers
•Circulating fans 10,8
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•Exhaust fans 2
•Winder 2
•Clips
•Pins
•I.R
•Cooling drums 2

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Working Principle (Cont.)
1.The stenter of fabric is passed through the padders of the stenter
where various softeners are used for softening of fabric.
2.The fabric is then entered into the mahlo(weft sratightener). The
function of the mahlo is to set the bow.
3.The fabric is gripped by the clips. Pins are also provided but the
pins has a disadvantages that make holes at the selvedge but the
stretching of the pins has a disadvantage that make holes at the
selvedge but the stretching of the pins are greater than the clips.
These clilps and pins are joined to endless chain.
4.There are 5 to 10 Chambers provided on the m/c each chamber
contains heat exchanger and blower system.
5.Blower system helps to take the heat from the heat exchanger and
apply to fabric for drying the fabric.

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6. There are two exhaust fans system for removing extra heat from the
chamber.
7. There are over feeding system for shrinkage, spirality and GSM
control.
8. Filters are provided to separate dust from air.
9. The circulating fans blow air from the base to the upper side and
exhaust fans sucks all the hot air within the chambers.
10. There are also two cutting blade for selvedge cutting of the fabri
Working Principle (Cont.)

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• N i p p r e s s u r e
• 2 . B o w a n d h e a d i n g ( s k e w ) c o n t r o l l e r s :
• 3 . C h a m b e r t e m p e r a t u r e
• 4 . D w e l l t i m e
• 5 . O v e r f e e d i n g
• 6 . U n d e r f e e d i n g
• 7 . E x p a n d e r s a n d u n c u r l e r s
• 8 . B l o w e r
Controlling Parameters
of Stenter Machine:

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• W i d t h o f t h e f a b r i c :
• L e a k a g e s o f t h e r m i c f l u i d :
• C o n c e n t r a t i o n o f t h e c h e m i c a l s :
• T e m p e r a t u r e a n d v i s c o s i t y o f t h e f i n i s h i n g b a t h
• D r y i n g e f f i c i e n c y
• T e m p e r a t u r e o f t h e r m i c f l u i d o i l :
• C l i p s a n d p i n s :
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Controlling Parameters
of Stenter Machine:

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Specification of a Stenter Machine:
Brand Name Bruckner
Serial no 72276-0463
Origin Germany
Year of manufacture 1995
Speed range 15-30 m/min
Temperature range 50-250oC
Used utilities Electricity, Gas, Compress air, Steam
Production capacities 8 ton /day
No. of chamber 3
Maximum fabris width 102”
Minimum fabric witdth 30”
Steam pressure 2 bar
Air pressure 10 bar
Applied for Open tube fabric
No. of ratamatic burner 6
Extra Attachment Mahlo weft straightener
M/C parts
Burner, Nozzle, Exhaust air fan, Over feed
roller, Suction fan, Chain arrangement

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Technical Data of Stenter Machine:

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Thank You
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