Principle of Operation – Automatic Sleeve Wrapper The Sleeve Wrapper with sealing bar uses two rolls of single wound shrink film. One film roll is kept on the roll holder at top and another roll kept at the bottom. Once the film from both the rolls is sealed to make a joint, it forms a curtain through which the products are pushed through and the film is sealed again at the back side of the products. This forms a tube of film (open at two ends) around the product(s). The products are then transferred to the shrink tunnel for final shrinking.
Operation – Automatic Sleeve Wrapper The
sealing system consists of a
Special sealing system suitable for P.E.films. The infeed table of
the sealing unit receives the product and and are pushed to the outfeed area of
sealing unit through the film curtain. Once the cartons reach the sealing area,
the top hold down will be actuated to hold the carton and sealing arm is
actuated. The sealing arm makes the seal and top hold down and sealing bar
retracts and this completes the sealing operation. Once the sealing arm
retracts the next product can be pushed to sealing area. The complete sequence
including unwinding motors is controlled through PLC.
Standard Machine Features:
·
Heavy Duty and robust frame in MS painted structure
·
Emergency stop
·
Teflon Coated Special Structure Hot Knife Sealing System
·
L/H or R/H side infeed customized as per customer’s requirement
Technical Specifications
- Reputed
pneumatics (janatics make)
- Bonviro/eltek
drive motors
- Delta
Make AC drives
- Selec/
Omron temperature controllers
- Selec/
Omron overload relays and imported sensors
- Silicone
Sealing pad
Width of sealing bar
|
650 mm
|
Height (Jaw opening)
|
350 mm
|
Maximum Film Width
|
700 mm (maximum reel diameter
300 mm)
|
Infeed conveyor length
|
Customized as per layout
|
Film Thickness
|
30 to 80 microns
|
Standard Machine Height
|
900 +/- 50 mm
|
Electrical Requirements
|
240 V AC 50/ 60 Hz 1Ph/3ph
|
Power Requirement
|
1.0 KW
|
Compressed Air Requirement
|
6 bars at a rate of 200 Liters/min
|
Operation – Shrink Tunnel
The shrink tunnel would circulate hot air
around the pack as it moves on the conveyor. The air blow is provided by means
of two blowers driven by AC motors. The air from inside of the tunnel is sucked
and blown on the heater. Heaters are finned types and are located on the sides
of the tunnel chamber. This re-circulated air comes on the pack from all sides,
top bottom thereby giving a uniform shrink to the pack. Once the product moves
out of the hot chamber, cool air is blown on the pack to achieve a tight cling
on the pack and to cool the pack.
Standard Machine –
Shrink Tunnel
·
MS painted structure
·
AC motor driven Circulation
Blower Fans
·
Variable Speed AC conveyor
Drive
·
Stainless Steel Wire Mesh Belt
for LDPE film with geared tooth sprockets
·
Cooling Arch at the exit of the
tunnel belt
·
Control Panel for the tunnel
mounted outside the tunnel
Technical Specifications –
Shrink Tunnel
- Finned Heaters
- SSR control for heaters
- High flame Oflex cable for heaters
- Selec /Omron digital Temperature controllers
- LHP high temperature blower motors
Width of Tunnel opening
|
650 mm
|
Height of Tunnel opening
|
350 mm
|
Length of Tunnel chamber
|
1500 mm
|
Blower motor(s)
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2800 or 1440rpm 1or 2nos
|
Wattage of heaters
|
customized as per film/ speed (approx 21-15kw)
|
Electrical Requirement
|
380 – 440 V AC, 50 Hz, 3P + N + PE
|
Working Height
|
900 +/- 50 mm
|
Conveyor motor Power Requirement
|
As per final design Siemens/ABB make
|