BRUCKNER STENTER MACHINE /OVERVIEW OF STENTER MACHINE BASED ON TEXTILE FINISHING

STENTER MACHINE:
• A machine or apparatus for stretching or stentering fabrics.
• The purpose of the stenter machine is to bringing the length and the width to predetermine dimension and also for heat setting and it is used for applying finishing chemicals and also shade variation is adjusted.Functions of Stenter Machines

Functions of Stenter Machines:
• Heat setting is done by the stenter for lycra fabric,synthetic and blended fabric.
• Width of the fabric is controlled by the stenter.
• Finishing chemical apply on fabric by the stenter.
• Loop of the knit fabric is controlled
• Moisture of the fabric is controlled by the stenter
• Spirility controlled by the stenter
• GSM of the fabric is controlled by the stenter.
• Fabric is dried by the stenteri

• Why choose BRÜCKNER?
• Good reasons to invest in a BRÜCKNER
• POWER-FRAME stenter
•Highest drying performance due to the well-engineered and patented
• SPLIT-FLOW® air circulation system
• Up to 35 % energy saving thanks to economical heat recovery and
• energy saving concepts
• Absolutely homogeneous distribution of air flow and temperature due to
• the alternating air flow in the thermo zones (every 1.5 m)
• The flexible SPLIT-FLOW® air circulation system allows a process control
• which is fine-tuned to the particular finishing requirements of all kinds of
• fabric
• Optimum straightening results due to an innovative, integrated
• straightener with shortest possible fabric path to the pin-on point
•  Extremely robust and low-maintenance chains, chain rails as well as pin
• bar carriers and clips
• Exactly reproducible finishing results thanks to full automation and the
• recipe administration of the line

Components of Stenter Machine:

•              Paders

•              Weft straightner(Mahlo)

•              Burners

•              Heat        recovery

•              Attraction rollers

•              Circulating fans

•              Exhaust fans

•              Winder

•              Clips

•              Pins

•              I.R

•              Cooling drums

Stenter Frame

STENTER FRAME RANGE

•      Infeed Combination

•      Stenter Frame-Twin Air with horizontally reversed pin and clip chain

•      Outlet Combination

For Treatment of : Woven and Knit Fabrics

Nominal width : 200 cm

Working Width

Maximum tension width : 180 cm Minimum tension width : 60 cm Mechanical speed range : 5 – 100 m / min. Heating : Circulating oil

Specification : Pin and Clip (Combi)

STENTER FRAME-HORIZONTALLY REVERSED PIN AND CLIP CHAIN

Stenter Inlet complete with :

Overfeed device,

Fabric inlet frame with operating platform, Control box,

Upper traction roller,

Overfeed device electronically controlled with Digital Indicator for maximum

overfeed + 60% as

compared with the stenter chain speed,

Bottom traction roller electronically controlled with Digital Indicator Speed variable

+ 10%,

Drive for the traction rollers,

One driven expander roller (fine pitch) profile surface made of stainless steel with

motor,

One manually adjustable weft correction roller.

Fabric Infeed device complete with :

Two needling in-apparatus selvedge tensioning device right and left separately

adjustable

Selvedge Uncurlers with 2 fixed screws Spindles Overfeed device, edge spreader LS 3001 (E+L make)

Fabric Feed device complete with :

Infeed track control KR 43 with FR 15 sensor,

Inlet field tracks 3000 mm long, + extension track of 1440 mm
After -pin brushes for the inlet tracks ,Pneumatic chain tensioner chain tracks in the treatment chamber longer delivery tracks 2820 mm long after pin brush for outlet field tracks  ,

Frequency controlled individual Chain drive,

Horizontal reversed pin and clip chain (ball bearing type) with low maintenance, Swivel type De-pinning rods,

Fabric outlet frame

Lower spreading and positioning roller , nozzle with crimp shoe

Fabric Infeed device complete with :

Two needling in-apparatus selvedge tensioning device right and left separately adjustable

Selvedge Uncurlers with 2 fixed screws Spindles Overfeed device,

edge spreader LS 3001 (E+L make)

Width adjustment of the Stenter chain via lube-free with adjusting spindles with individual drives

complete with :-

6 Spindles for the chain tracks in the treatment chamber each driven, One Spindle for the outlet field tracks driven width indication in front and in the rear

Digital width indication at inlet and outlet of stenter frame

Treatment Chamber `TWIN-AIR' with separate directed top and bottom air, each with 2 air

circulation fans complete with

Isotherm zone at entry and exit

5 treatment fields with 150 mm thick insulation cladding for especially high

thermal insulation,

5 x 2 drives for the air circulation fans, with invertor control upto 1500rpm

Drawable CAD stream KLD-nozzles,

Single lint filters which can be pulled out and cleaned during production

Compact front walls of the chamber -

Cold air barriers at the fabric inlet and outlet openings

Floor insulation

Special insulation panels made of mineral fibre 100 mm thick for machine installation directly on the

ground floor of the factory hall

Exhaust 2 suction fans

Circulating oil Heating

5 Air heaters for treatment chambers

OUTLET COMBINATION

Del ivery Suppor t wi th traction rol ler

Delivery support with traction roller

Separate drive for take off roller. This drive will also run plaiter and batcher Selvedge shifting device

Surface – driven winder, winding diameter upto 1800 mm

Fabric guiding arms, pneumatically actuated with mechanically driven traction roller Bowed spreading bar

Folder

Plaiter disconnectable during batching process

Lap length – 1000 mm

Antistatic device for plaiter & batcher meter:counter

•      Complete power supply

                           Working.

•               The fabric is collected from the batcher to the scray and then it is passed through the padders where the finishes are applied and some times shade variation is corrected.

•               The fabric is entered into the mahlo (weft straightener)the function of the mahlo is to set the bow and also weave of the fabric is griped by the clips and pins are also provided but the pins has the disadvantage that they pins makes holes at the selvedge but the stretching of the pins are greater then the clips.

•               These pins and clips are joined to endless chain.

•               There are 8 to 10 chambers provided on the machine each chamber contains a burner and filters are provided to separate dust from air. 

•               The circulating fans blow air from the base to the upper side and exhaust fans sucks all the hot air within the chambers.

•               Attraction rollers are provided to stretch the warp yarn. 

•               After stentering we can increase the width of the fabric up to 1.5-2 inch .

•               The speed of the machine is about 7-150m/min.

•               3 meters fabric can run in each chamber. 

•               Temperature is adjusted that according to the fabric as for.

•               P/C-210°c

•               Cotton-110-130°c

Fabric take-up, scrays, fabric accumulators

J-box fabric scray with fabric guidin gelements

More productivity with the new POWER-PAD padder

FINISHING PADDER

Two Bowl Pad Mangle with inclined pad bowl arrangement complete with :- Machine frame with traverses and claddings discharge sheets made of stainless, large

dimensioned pneumatic cylinders for achievement of high contact pressures Squeeze rollers - One Top counter pressure roller hard rubber 100 shore A and one bottom crowned roller, soft rubber 85 Shore A Drive for counter pressure roller Liquor Trough made of stainless steel - Pneumatically lifted and lowered Single and lowered Single Longer immersion path in trough Expander unit for

Knits goods - Driven Scroll Roller before the nip Newly developed weftstraightening process with ropes in the entry zone

Heat exchanger circulating air /exhaust gas (indirect gas heating )

Benefits of the indirect gas heating

–– Higher temperature homogeneity

–– No mixing of exhaust gas with the air circulation in the

dryer

–– High efficiency with lowest emission values

–– Minimum risk of yellowing effects on the fabric

–– No chemical reaction of the exhaust gas with the fabric

                                                 Benefits of the direct gas heating

–– Maximum efficiency with low rates of emission

–– Extremely short heating-up time

–– Minimum maintenance

–– Maximum temperature uniformity of the air circulating in the dryer

by the nozzle system and the counter-type arrangement with two

burners and two precision temperature controllers per one 3 metrecompartment

–– Continuous control range of 1:40

Stenter versions with conveyor belt