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Calenders for non wovens
Heating cylinders
Transfer printing |
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Calenders for Non Wovens
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Heating Cylinders
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PERFORMANCE |
A temperature of
250°C and over, a precision and a reliability of +/-1% |
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Standard diameter : |
350 mm - 500 mm - 800
mm - 1000 mm - 1500 mm. |
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Upon estimate
diameter that is not standard : |
over 1500 mm |
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Length : |
2060 mm - 2460 mm -
2760 mm - 3640 mm - 4400 mm - 5500 mm |
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Upon request these
cylinders can be covered with : |
Hard
chromium-plating, teflon, anti-adherent, etc.
Or can be fitted with various paddings. |
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Furthermore we can
supply them with various accessories, especially : |
- Temperature
regulator
- route cylinders
- pressure cylinders
- controls
- transmission system
- conveyor belts with guiding system. |
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Transfer Printing
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Transfer printing was
discovered in 1957 by a gentleman called NOËL DE PLASSE who
worked for the company LAINIÈRE DE ROUBAIX in the North of
France.
He understood that the dyes
could pass directly from a solid to a gaseous state when brought
to a temperature above 190°C (370°F). This change is termed
sublimation and is the basis of transfer printing, also known as
dry printing.
Synthetic fibres for transfer
printing.
The most popular fibre for
transfer printing is polyester.
Polyester blends, Nylon 6.6,
Acrylic and triacetate can be printed as well. |
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Advantages of transfer printing |
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As
once can see the process of transfer printing for the fabric
printer is very simple, all the problems of printing the design
in the first place are given to the transfer paper manufacturer.
What are the other advantages :
- Capital investment is low compared to other printing processes
- No auxiliary equipment
- Small floor space required
- No pollution or effluence
- Efficient energy consumption
- Clean process with limited machine maintenance
- Minimum semi skilled labour required
- Limited stock of printed cloth
- Transfer paper readily available from numerous
manufacturers worldwide
- Sample paper lengths available in 5 meters
- Immediate change over from design to design on the calender
- Ability to rapidly respond to clients demand
LEMAIRE calenders are renown for their reliability and for their
innovations. We manufacture a range of machines with different
cylinder diameters denoting the speed of production.
Furthermore, we offer a variety of working widths from 1800 mm
for standard fabric to 3200 mm for wide width fabrics and
sometimes up to 5000 mm for floor coverings. |
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Heating cylinder diameter |
500 mm (20") |
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Working
widths available |
1800 mm (72"), 2200 mm
(88"),2500 mm (100"), 3200 mm (132") |
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Production speed |
140 to 350 meters per hour |
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Heating
cylinder diameter |
800 mm (32") |
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Working
widths available |
1800 mm (72"), 2200 mm
(88"),2500 mm (100"), 3200 mm (132") |
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Production speed |
250 to 620 meters per hour |
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Heating cylinder
diameter |
1000 mm (40") |
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Working widths
available |
1800 mm (72"), 2200
mm (88"'),2500 mm (100"'), 3200 mm (132") |
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Production speed |
304 to 760 meters per
hour |
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Heating cylinder
diameter |
1500 mm (60") |
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Working widths
available |
1800 mm (72"), 2200
mm (88"),2500 mm (100"), 3200 mm (132") |
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Production speed |
600 to 1200 meters
per hour |
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The
Double Dispensing System (D.D.S.) |
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This system is designed to permit synchronized wide
width transfer printing up to 3.20 m of various
substrates (non woven materials, films, woven fabrics,
warps) using two rolls of heat transfer papers of the
same design and matching these designs across the width.
There are 2 dispensing units controlled independently.
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Each one
features
- an air expanding shaft
- 2 mobile bearing housings
- One pneumatic brake controlled by a precision valve
- A positive drive assembly for lateral movement of the
assembly
The two heat transfer
paper rollers are guided :
- laterally by 2
photo-electric cells for the paper edge
guidance
- longitudinally by a photo-electric cell to read the
registration marks on the edge of the paper (to join the
designs).
The information read
by the photoelectric edge guidance system is transmitted
to the microprocessor control, which analyses and
activates the correction movements of the assembly along
the width or the length appropriately. |
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Warp
Transfer Printing |
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The LEMAIRE process
of warp transfer printing can be applied to a wide range
of yarn counts, although the best results are achieved
when printing 100 to 300 denier polyester.
The yarn can be filament, texturized spun, etc.
Of course, a precise
control of tension and alignment is crucial to maintain
the warp quality. The warp printing machine is a beam to
beam system. The specially designed control system
monitors and maintains level tension between let-off and
printing, and again between printing and rerolling.
Alignment is also monitored by a photoelectric system.
The advantage of warp
printing is that from one warp print an infinite number
of designs can be produced. Firstly you may vary the
weave on the warp to change the fabric. Secondly you can
vary the colour of the colours in the filling therefore
giving different colourways and bring out different hues
in the warp print. Thirdly you can vary the type of
yarns used in the filling, inserting fancy yarns etc. |
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Pile
Fabric Printing |
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One of the great
interests currently is the possibility to print the pile
fabrics such as flocked or velours fabrics. The
"coupling system" available on LEMAIRE machines
eliminates excess pressure and torque which otherwise
cause the pile fibers to lie down. A dense pile of less
than 4 millimetres (0,16 inches) pile height gives the
best results.
Longer dwell time,
not higher temperature is important for thorough
penetration. Brushing up is also helpful to regain pile
height. |
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