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The flexo or flexographic printing press is used commonly in the food packaging
industry. The flexo or
flexographic press is commonly associated with the plastic industry as many of
the food packaging products use plastics. Besides the food packaging industry, the
flexo printing press is also associated with industries including paper bags,
carton and cardboard box, medical packaging, sanitary product labels, and the diaper
industry. In recent years the flexo printing press is also found in the process for
printed electronics manufacturing such as RFID, OLED lighting, functional
substrates, circuit boards, and sensors. The Flexo press can print on various
substrates or materials. This includes porous substrates such as paper, carton and
cardboard. For non-porous substrates family including PE, PET, PP, and aluminum.
The substrate is fed into the flexo press in a roll form from the unwinder unit. The
tension of the substrate needs to be controlled with precision as it moves
through the printing and drying units. The capability to main a precise substrate
tension makes all the difference in print quality. This is a crucial disguising
point for great flexo press and mediocre flexo press. Any tool will have its
advantage and disadvantage and flexo press is no different.
Advantage:
Flexo press, especially CI flexo press has the capability to run at extremely high
speed when compared to gravure and offset
Flexo press has the capability to print on a wide variety of substrates
Flexo press has a shorter setup time, therefore, reducing waste when compared to
gravure
Flexo press that runs on water based ink or UV / UV-LED inks are much more
environmental friendly when compared to gravure
Flexo press is very suitable for medium to long-run jobs
Disadvantage
The operators of flexo press requires higher technical skills when compared to the
gravure printing process
Flexo press is less suitable for short-run jobs when compared to digital
printing as the job setup time and plate preparation time is much longer and much
less flexible.
Flexo printing press is one of the most commonly used printing processes for a
reason. Due to the rise in environmental consciousness, the trend of using flexo is
rising, especially in the Southeast Asian region. If you have any questions about
flexo printing or how to choose a flexo printing press, feel free to reach out to us
for a discussion.
About the CI Press
CI press means a type of printing press
used in multicolor flexo graphy in which a single large
diameter common impression cylinder supports the substrate as
it contacts a series of adjacent plate cylinders, which
lay down successive colors.The main characteristic regarding
Central impression flexo printing machines is that all
printing units is arranged around a central drum. Here is
a photo of an 8 color printer. it can print on
PE, PP, OPP, PET, Paper. As it can be seen from the
photo the printing units surrounds the drum. This type
of press offers a high print quality and registration
accuracy. Registration accuracy is when the ink combinations
is aligned precisely on the substrate. Flexographic printing
machines (often abbreviated as flexo press) perform a
printing process which utilizes a flexible relief plate to
transfer ink to printed substrate. Every printing job will
require its dedicated set of plates. Flexo CI presses
use a central drum which is common to all colours as
counter impression roll. Flexo presses are used to print
on different supports: plastic films, paper and aluminium
foil. Flexo printers CI (Central Impression) are especially
suitable in markets which require process jobs and
flexibility (involve productions of small lots). In particular,
technological improvements of last 15 years have re-shaped
CI flexo presses both in their mechanical construction and
in its controls. This improved their printing quality,
drastically reduced change over times and consequently
downsized their "minimum economical lot".
6 features of the stack flexo press
Flexographic printing machines (often abbreviated as
flexo press) perform a
printing process which utilizes a flexible relief plate to transfer ink to printed
substrate. Every printing job will require its dedicated set of plates. Here are
some advantages of it as folloeings:
1. Monochrome, multi-color printing is possible. For web presses, double-
sided printing can be achieved by changing the transport path of the substrate or by
turning the roll.
2. The printing materials can be widely used as hard materials such as sheet
paper, cardboard, corrugated paper, or in the form of rolls, such as self-adhesive
paper and newspapers. The viscosity of the printed material must be accurately
measured with a viscosity cup.
3. Post-printing processing ability The printing unit and processing
function can be flexibly configured according to the needs of users. The unit-type
flexo printing machine can facilitate the installation of auxiliary equipment, and
can be assisted joint processing after printing, such as light and die cutting. Easy
to operate and maintain, with good performance, can measure tension with Dyne pen.
4. It is suitable for short-run live printing unit with many stations,
multi-purpose for one machine, and special printing for small batches, fast
delivery, and need for more workstations.
5. Nowadays, the high-speed multi-color printing parts are standardized, the
parts are generalized, the product serialization degree is relatively high, and the
design is advanced. Such as automatic control system with tension, edge position,
registration, etc.
6. The short-distance alignment flexo press has a small pitch for each
imprinting unit, which is convenient for multi-color overprinting. Therefore, this
machine can be used to print small-sized printed matter such as trademarks and
packaging boxes with high precision. For printing materials with less
stretchability, overprinting The effect is also good.
Why is Servo Gearless More Precise?
Gearless Servo Flexographic press
has become increasingly popular among the printing and packaging industry. A
Servo Flexographic press is able to maintain print quality, reduce startup time and
waste better. Many know that gearless servo presses are more precise when it comes
to color registration and impression control when compared to a geared press. But
why is it more precise? When is it more precise? Are there any other advantages
besides being more precise? In this article we will understand why a servo
gearless is more precise, we need to understand what is affecting the print
precision in the first place. The accurate synchronization of the anilox roller and
the plate cylinder at each print deck plays an important role in print precision. In
the flexographic printing process, the anilox roller contacts the plate cylinder
that carries the plate with dot patterns that form the print image. During the
contact, ink is transferred over from the anilox roller over to the dot patterns. To
be able to provide a constant ink coverage is crucial to the print quality and this
depends on maintaining consistent motion between the surface of the anilox roller
and the plate cylinder. Whenever the print cylinder moves faster than the anilox
roller, less ink is transferred to the print cylinder, resulting in a light section
In the printed piece. Whenever the anilox roller moves faster than the print
cylinder, more than the normal amount of ink is transferred, resulting in a dark
section. Now, knowing what affects the print precision, let’s look into the
mechanism of a geared press and a servo gearless press.This type of mechanism
creates a backlash in the geared system. Backlash causes the roller and cylinder to
rapidly accelerate and decelerate as the gear teeth bounce back and forth against
each other.The direct-drive rotary servo motors synchronize the anilox roller and
the plate cylinder to a much higher level with precision without the mechanical
gears. The servo gearless mechanism eliminates gearing together of the anilox, plate
and impression cylinder through a single motor. Instead, each anilox plate and
impression cylinder has an independent servo motor driving it , The motion of the
anilox and plate cylinders are electronically synchronized by a closed-loop control
system. The motion feedback device provides the servo motors with far more accurate
position and velocity information that the controller compares to its programmed
motion profile and based on this signal sends velocity commands signals to the
amplifier that drives the servo motor. As result synchronizing the anilox roller and
plate cylinder in both speed and phase with precision.
Advantages of the Gearless CI Flexo Printing Machine
The Gearless CI Flexo Printing Machine
is suitable for printing such packing materials as polyethylene,
polyethylene plastic bag glass paper and roll paper etc. And it is a kind of ideal
printing equipment for producing paper packing bag for food, supermarket handbag,
non-woven bag, vest bag and clothes bag, etc Here are some Characteristic as
followings:
Central impression type printing machine with better color registration. Due to
the big drum, the printed material is supported by the big drum, and greatly
improving color registration, especially with extensible materials.
All colors printing station drived by the central drum, Less transmission errors
because of less gear transmission, increase the registration precision.
Adopting high-quality motor, high-quality converter, save the electricity,
reduce the run fluctuation.
The machine is equipped with blower and heater; and the heater employed central
temperature control system, automatic temperature controller, and separated heat
source.
The use of individual drying oven and cold wind system can effectively prevent
the ink adhesion after printing.
Roller adopts special steel processing, and through special treatment, greatly
reduce the beating range.
Printing roller uses static balance and dynamic balance processing, hard anode
oxidation treatment, small resistance, beating small, achieves finally perfect
printing effect.
Accurate printing effect achieved by special gear transmission device.
industry. The flexo or
flexographic press is commonly associated with the plastic industry as many of
the food packaging products use plastics. Besides the food packaging industry, the
flexo printing press is also associated with industries including paper bags,
carton and cardboard box, medical packaging, sanitary product labels, and the diaper
industry. In recent years the flexo printing press is also found in the process for
printed electronics manufacturing such as RFID, OLED lighting, functional
substrates, circuit boards, and sensors. The Flexo press can print on various
substrates or materials. This includes porous substrates such as paper, carton and
cardboard. For non-porous substrates family including PE, PET, PP, and aluminum.
The substrate is fed into the flexo press in a roll form from the unwinder unit. The
tension of the substrate needs to be controlled with precision as it moves
through the printing and drying units. The capability to main a precise substrate
tension makes all the difference in print quality. This is a crucial disguising
point for great flexo press and mediocre flexo press. Any tool will have its
advantage and disadvantage and flexo press is no different.
Advantage:
Flexo press, especially CI flexo press has the capability to run at extremely high
speed when compared to gravure and offset
Flexo press has the capability to print on a wide variety of substrates
Flexo press has a shorter setup time, therefore, reducing waste when compared to
gravure
Flexo press that runs on water based ink or UV / UV-LED inks are much more
environmental friendly when compared to gravure
Flexo press is very suitable for medium to long-run jobs
Disadvantage
The operators of flexo press requires higher technical skills when compared to the
gravure printing process
Flexo press is less suitable for short-run jobs when compared to digital
printing as the job setup time and plate preparation time is much longer and much
less flexible.
Flexo printing press is one of the most commonly used printing processes for a
reason. Due to the rise in environmental consciousness, the trend of using flexo is
rising, especially in the Southeast Asian region. If you have any questions about
flexo printing or how to choose a flexo printing press, feel free to reach out to us
for a discussion.
About the CI Press
CI press means a type of printing press
used in multicolor flexo graphy in which a single large
diameter common impression cylinder supports the substrate as
it contacts a series of adjacent plate cylinders, which
lay down successive colors.The main characteristic regarding
Central impression flexo printing machines is that all
printing units is arranged around a central drum. Here is
a photo of an 8 color printer. it can print on
PE, PP, OPP, PET, Paper. As it can be seen from the
photo the printing units surrounds the drum. This type
of press offers a high print quality and registration
accuracy. Registration accuracy is when the ink combinations
is aligned precisely on the substrate. Flexographic printing
machines (often abbreviated as flexo press) perform a
printing process which utilizes a flexible relief plate to
transfer ink to printed substrate. Every printing job will
require its dedicated set of plates. Flexo CI presses
use a central drum which is common to all colours as
counter impression roll. Flexo presses are used to print
on different supports: plastic films, paper and aluminium
foil. Flexo printers CI (Central Impression) are especially
suitable in markets which require process jobs and
flexibility (involve productions of small lots). In particular,
technological improvements of last 15 years have re-shaped
CI flexo presses both in their mechanical construction and
in its controls. This improved their printing quality,
drastically reduced change over times and consequently
downsized their "minimum economical lot".
6 features of the stack flexo press
Flexographic printing machines (often abbreviated as
flexo press) perform a
printing process which utilizes a flexible relief plate to transfer ink to printed
substrate. Every printing job will require its dedicated set of plates. Here are
some advantages of it as folloeings:
1. Monochrome, multi-color printing is possible. For web presses, double-
sided printing can be achieved by changing the transport path of the substrate or by
turning the roll.
2. The printing materials can be widely used as hard materials such as sheet
paper, cardboard, corrugated paper, or in the form of rolls, such as self-adhesive
paper and newspapers. The viscosity of the printed material must be accurately
measured with a viscosity cup.
3. Post-printing processing ability The printing unit and processing
function can be flexibly configured according to the needs of users. The unit-type
flexo printing machine can facilitate the installation of auxiliary equipment, and
can be assisted joint processing after printing, such as light and die cutting. Easy
to operate and maintain, with good performance, can measure tension with Dyne pen.
4. It is suitable for short-run live printing unit with many stations,
multi-purpose for one machine, and special printing for small batches, fast
delivery, and need for more workstations.
5. Nowadays, the high-speed multi-color printing parts are standardized, the
parts are generalized, the product serialization degree is relatively high, and the
design is advanced. Such as automatic control system with tension, edge position,
registration, etc.
6. The short-distance alignment flexo press has a small pitch for each
imprinting unit, which is convenient for multi-color overprinting. Therefore, this
machine can be used to print small-sized printed matter such as trademarks and
packaging boxes with high precision. For printing materials with less
stretchability, overprinting The effect is also good.
Why is Servo Gearless More Precise?
Gearless Servo Flexographic press
has become increasingly popular among the printing and packaging industry. A
Servo Flexographic press is able to maintain print quality, reduce startup time and
waste better. Many know that gearless servo presses are more precise when it comes
to color registration and impression control when compared to a geared press. But
why is it more precise? When is it more precise? Are there any other advantages
besides being more precise? In this article we will understand why a servo
gearless is more precise, we need to understand what is affecting the print
precision in the first place. The accurate synchronization of the anilox roller and
the plate cylinder at each print deck plays an important role in print precision. In
the flexographic printing process, the anilox roller contacts the plate cylinder
that carries the plate with dot patterns that form the print image. During the
contact, ink is transferred over from the anilox roller over to the dot patterns. To
be able to provide a constant ink coverage is crucial to the print quality and this
depends on maintaining consistent motion between the surface of the anilox roller
and the plate cylinder. Whenever the print cylinder moves faster than the anilox
roller, less ink is transferred to the print cylinder, resulting in a light section
In the printed piece. Whenever the anilox roller moves faster than the print
cylinder, more than the normal amount of ink is transferred, resulting in a dark
section. Now, knowing what affects the print precision, let’s look into the
mechanism of a geared press and a servo gearless press.This type of mechanism
creates a backlash in the geared system. Backlash causes the roller and cylinder to
rapidly accelerate and decelerate as the gear teeth bounce back and forth against
each other.The direct-drive rotary servo motors synchronize the anilox roller and
the plate cylinder to a much higher level with precision without the mechanical
gears. The servo gearless mechanism eliminates gearing together of the anilox, plate
and impression cylinder through a single motor. Instead, each anilox plate and
impression cylinder has an independent servo motor driving it , The motion of the
anilox and plate cylinders are electronically synchronized by a closed-loop control
system. The motion feedback device provides the servo motors with far more accurate
position and velocity information that the controller compares to its programmed
motion profile and based on this signal sends velocity commands signals to the
amplifier that drives the servo motor. As result synchronizing the anilox roller and
plate cylinder in both speed and phase with precision.
Advantages of the Gearless CI Flexo Printing Machine
The Gearless CI Flexo Printing Machine
is suitable for printing such packing materials as polyethylene,
polyethylene plastic bag glass paper and roll paper etc. And it is a kind of ideal
printing equipment for producing paper packing bag for food, supermarket handbag,
non-woven bag, vest bag and clothes bag, etc Here are some Characteristic as
followings:
Central impression type printing machine with better color registration. Due to
the big drum, the printed material is supported by the big drum, and greatly
improving color registration, especially with extensible materials.
All colors printing station drived by the central drum, Less transmission errors
because of less gear transmission, increase the registration precision.
Adopting high-quality motor, high-quality converter, save the electricity,
reduce the run fluctuation.
The machine is equipped with blower and heater; and the heater employed central
temperature control system, automatic temperature controller, and separated heat
source.
The use of individual drying oven and cold wind system can effectively prevent
the ink adhesion after printing.
Roller adopts special steel processing, and through special treatment, greatly
reduce the beating range.
Printing roller uses static balance and dynamic balance processing, hard anode
oxidation treatment, small resistance, beating small, achieves finally perfect
printing effect.
Accurate printing effect achieved by special gear transmission device.