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.

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


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


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


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


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.