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Extruder
with T-Die
Lorex extruders
with the help of Hi-Q computer optimized screw ensures
optimum melt homogenization and conveys the melt to
the T-Die. |
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T-Die
features computer designed flow geometry for optimum
mass flow distribution and minimum gauge variation
across the width.
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Other attractive features of the extruder are grooved bush
feeding, cold start protection, micro processor based PID
controls, melt temperature and back pressure indicators
and pneumatic movement of the extruder cart.
Water Quench Unit
The water quench film cooling system has special tank design
for minimum turbulence, temperature controller for maintaining
uniform temperature of water mass, devices like squeeze
rubber rollers, suction pipes and wipers for ensuring dry
film.
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Film
slitter
The slitter unit mounted on a separate stand with
oscillating knife pack ensures vibration free slitting
of film and extended utilization of blades. With automatic
screen changer, manually indexable six station slitter
is recommended. With above, change to the new slitting
stage is possible without reduction in the line speed.
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Holding unit
The holding unit with amply proportioned normal godets and
positively driven nip roller ensures slip free stretching
of the tapes.
Tape
Extraction Unit
Tape extraction unit helps during machine start up and catches
broken tapes during operation. It is an efficient aspiration
system comprising of suction nozzles, feed pipes and waste
collection box.
Hot Air
Oven
The hot air oven with independent blower for upper and lower
level tunnels with common heating and velocity control mechanism
ensures uniform temperature profile and air velocities over
the entire heated surface, which is necessary for production
of uniform quality of tapes.
Stretching
& Annealing Unit
The combined stretching and annealing unit with five/six
amply proportioned godets has independent drives for the
stretching and annealing zones. The configuration of godets
can be arranged as per end requirement by providing mix
of normal, hot and cool godets. The oil heated godets help
to control the residual shrinkage in the stretched tapes.
The water cooled godets ensures constant normal temperature
of the tapes arriving at the Cheese winders.
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Optional
Accessories
Hopper Loaders , Dosing And Mixing Unit
Dosing and mixing unit upto five components can be
supplied for feeding material proportionately as per
programming to the extruder hopper. The unit utilizes
screws for high metering accuracy. Every component
has an independent hopper loader for conveying granules
from bin to the doser.
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Automatic Screen changer
Automatic screen changer with belt filter can be used
in place of manual screen changer to minimize stoppages
of tape stretching line for want of filter change.
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Film folding Device
Film folding device is recommended for producing low
denier tapes while utilizing the extruder output optimally.
It is used in conjunction with a wider T-Die and the matching
width of water quench unit.
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Fibrillator
Fibrillator unit, placed between the hot air oven
and the combined stretching and annealing unit is
used for fibrillating the stretched tapes. The needle
roller has an independent drive with replaceble needle
bars whose pitch can be selected for the desired fibrillation
structure. The modular design allows production of
fibrillated and non-fibrillated tapes together. |
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Additional Stretching Unit
Additional stretching unit is recommended for production
of low residual shrinkage tapes or tapes with low elongation
at break. The unit consists of three heated godets with
an independent drive and a hot oil circulating unit.
Melt
pump is used to neutralize the effect of surgings in
the extruder and ensure uniform delivery of melt to the
die. It improves the denier variation in the machine direction.
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Auto gauging Die is used for adjustment of gap
of die lip automatically based on the feedback from
thickness gauge monitoring system.This can be used
only in conjunction with a scanner.
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Water removal system is supplied additionally on
specific requests either for higher operating speed or for
the raw materials with tendency of carring more water during
processing.
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Auto
gauging die in conjuction with scanner is
recommended to produce tapes with denier variation
that are closely tolerated. The automatic profile
controller takes input from the scanner and gives
output to adjust the die lip thermal bolts to control
film thickness. |
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Extended
Hot air oven is recommended for higher speed
tapelines for uniform and proper orientation.
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In the Centralized computer control system the
automatic control of temperature with optimization and precise
speed adjustment of drives of all the units is easily obtained.
The computer performs other functions like the managemnet
of recipe and alarm, displays the trend of melt pressure
/ temperature in graphic or tabular form etc. All these
parameters are located in the memory and can be recalled
at any time.
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