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Flexo Printing Machine

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01/

Rich Experience
Zhejiang Feida Machinery Co.,Ltd is an enterprise which focuses on research and development, manufacture, sale, and after-sales service of Full Automatic Roll Flatbed Die Cutting Machine, Embossing Machine, Creasing Machine and Stripping Machine for Eco containers.

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Reliable Product Quality
In order to meet the needs of customers, Ruian Feida Machinery Co.,Ltd always perfects the varieties and improves the quality. There are two series of products, Full Automatic Roll Flatbed Die Cutting Machine and Full Automatic Stripping Machine, which reach the domestic advanced level.

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Feida Company has passed the certification of CE and the certification of Import and export permit. Our products are welcomed not only by domestic customers but also exported to USA, Greece, South and North America, Mid-est, Southeast Asia and many other countries and regions.

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Professional Technical Team
The professional sales team will assist customers to do the product size layout, waste rate generation, and output calculation to analyze the customer's professional needs, recommend the equipment that is most suitable for the customer, and maximize the benefit of the customer. So that our products can meet the needs of users to the greatest extent.

What is Flexo Printing Machine?

A flexo printing machine, short for flexographic printing machine, is a type of printing press that utilizes flexible relief plates to transfer ink onto a substrate. This printing method is commonly used for high-volume printing of packaging materials, labels, newspapers, and other items. Flexography is known for its versatility and ability to print on various materials, including paper, cardboard, plastic, and flexible packaging materials.

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Email: mary@feidamachine.cn
Add: NO.529 ZHENGSONG ROAD, WANQUAN TOWN, PINGYANG, WENZHOU CITY, ZHEJIANG PROVINCE, CHINA

Advantages of Flexo Printing Machine

1. Print Quality
In flexography, you don’t need special coatings to ensure quality across a wide variety of substrates. No special coatings mean reduced cost per unit. Most other printing solutions may not have compatibility with as many substrates as a flexographic printing machine does.

2. Production Rate
Despite the hi-tech innovations in the industry, Flexo print process is still considered and proverb to be faster than other processes. A Flexo print company with modern equipment can ensure greater capacity up to or even over 600 FPM, which offers businesses an opportunity to finish the job faster without losing efficiency. In addition, rotary print heads being in use enable presses to deliver continuous patterns, no matter if they are complex.

3. Versatility of the Process
From textile printing to label printing and everything in between, a Flexographic printing machine allows businesses to diversify their overall market appeal and stay relevant in competition. Packaging printing is another significant field of application.

4. Economic Benefits for Medium to High Production Runs
Digital printing has seen serious improvements over the years, but it is still slower and more expensive than the Flexo print process when it comes to production volumes from medium to high. Adopting this particular process, businesses in the labeling industry can gain considerable economic advantages.

5. One-Off Cost for Plates
With proper maintenance, a Flexo print plate can be reusable which makes it easy for printing businesses to handle repeat orders using only a few overheads. You can compare this with digital printing, especially for the part where you need to invest time in the setup and design. Flexo printing becomes useful on jobs that involve labour-intensive yet short volume.

6. Flexibility from Conversion
Many flexo presses these days come with the facilities for in-line conversion which reduces the cycle time drastically. Reduced cycle time means that you can complete most print volumes in one pass. You can integrate a good number of other in-line processes into the Flexo printing process, which include cold and hot foil, lamination, silk screen, digital print, booklet and RFID insertion, multi-layer, reverse side, and variable data print.

7. No Worries about Substrates
With a Flexographic printing machine, you can choose from different types of substrates, which include board, paper, plastic film, foil, recycled substrates, cellophane, and other textiles.

8. Ideal for a Wide Variety of Inks and Drying Items
As much as the Flexographic printing system has developed, provisions for inks and different drying systems also experienced growth in both efficiency and complexity. If you have a Flexographic press that can be called a modern setup, it should have the right features to use both water and solvent-based inks. Popular drying mechanisms use UV driers, air heaters, or IR driers which result in increased web speed, decreased ink usage, and reduced energy consumption.

9. Ease of Use and Maintenance
Thinking of the good old age of the typesetting industry, one may take the cumbersome process and setup time for flexographic presses as a downside. However, modern Flexographic printing machines require a very short time for the setup and changeover procedures.

Application of Flexo Printing Machine

Product label stamps
Product labels here can be stickers printed with company or business logos or sub-labels printed with the most general information about the product: product name, ingredients, uses, quantity , usage, production date, expiry date… so that consumers can understand and recognize the brand, contributing to promoting the company’s image more widely. This type of label is the most popular, almost any product on the market: food, cosmetics, household… now need to print labels.

Sealing stamp
The type of stamp that is affixed to the screws of electronic components (television, computer, phone…) or the lid of the box, the bottle cap… to prevent the action of dismantling and peeling before reaching the user. use. With sealing stamps, there are two main materials used in Flexo printing: brittle paper (broken paper, broken paper …) and tough paper. These types of paper will all be damaged when there are signs of peeling, and can not be glued back to the original.

Warranty stamp
This type of stamp affixed on the product is a commitment of the business to the consumer that the product is still in its original condition. Through warranty stamps also to help identify and distinguish fake goods – real goods, contributing to improving the reputation of the unit in the market.

Error stickers
This type of stamp often has many shapes such as round, square, triangle, arrow with many different colors. As the name suggests, stamps are used to paste on defective products. Each company or each mistake will be prescribed stamps with a uniform shape and color for easy classification and correction.

Key Components of Flexo Printing Machine

Feed & Unwind Station
Control of the substrate is essential, feeding it into the press at a pre-defined tension , constantly even as the diameter of the roll changes . The unwind system should have automatic web guides and options for web cleaning and Corona treaters for synthetic substrates.

Printing station
The print station needs to provide a smooth & stable drive to ensure the printed image is clean & vibration free. The basic Flexo systems includes an Ink storage tank , one or more fountain/metering rolls , Anilox Roll & Plate Cylinder . As we saw above, The ink is picked up from the tank by the metering roll which wets the anilox Roll and then ink transferred to the plate cylinder which holds the printing plates, and then onto the impression cylinder which carries they substrate, the image is transferred from the plate to the substrate before repeating the continuous process. Together, the two cylinders are sometimes known as the print anvil.

Drying Station
Each colour should be dry before the next is applied to the substrate. The drying section might include a combination of Infrared & Air drying or UV / LED curing or both systems. Better machines will ensure the drying intensity is matched to the press speed which can be variable with different applications.

Chilling Rollers
With a growing use of ever thinner synthetic and unsupported films there is a need to control the web temperature to ensure the substrate remains stable through the press. This is even more critical where using UV drying system which inherently create a lot of heat . The addition of chill rollers provide that control.

Die Cutting & Converting
These are more commonly found on narrow web presses for production of labels, tickets & cartons. Products can be cut, creased, Foiled, Stamped, Embossed, perforated all in line in the same operation as printing. Therefore producing the finished product or label in roll or sheet form. Die cutting modules need to be built with heavy duty components for the high levels of pressure/force required to convert flexible webs up to 300gsm.

Outfeed and Rewind
The output section maintains tension as the substrate leaves the printing press, by means of tension control sensors. Waste products are rewound out of the system and the final products are rewound into large rolls for later inspection.

Factors Affecting The Price Of Flexo Printing Machine

Number of colours
The more colour options, the more expensive the press will be.

Web width
To print wider labels, a larger impression drum is required, thus adding to the unit cost.

Type of drive system
The more technologically advanced the print drive system, the more it will cost. Your options relate the level of technology & components are involved in the drive. A non-servo drive will operate manually on an open loop system with some simple automated components, whereas a full servo drive is a closed-loop system with more extensive technology options. It will monitor feedback signals from the press and make automatic adjustments to maintain tension, register, and print speed. A partial servo drive has some, more limited feedback options, but not as many as a full servo drive.

Type of drying system
As discussed earlier, print can be dried through high-pressured air , Infrared or ultraviolet curing. Some presses also use LEDs to fix the ink to the substrate. LED & UV systems are more expensive than IR and fan powered systems, although LED may have lower energy requirements and thus cost less to run.

Level of automation
Modern printing presses can be very sophisticated, with high levels of automation. For print businesses this cuts back on manpower requirements and can make your production line more efficient, but it will involve a larger initial investment.

Optional equipment
Additional equipment, such as Web Cleaners, Corona Treaters, Video inspection systems , conveyor systems, will increase the amount of money you need to spend on the press. Have a clear idea of essential features you need. Don’t overload your specification with options you may never use.

What Materials Can Flexo Printing Machine Be Printed On?

Paper decal
This is a material consisting of 4 layers, the top is paper, followed by an adhesive layer (usually Acrylic glue), followed by an adhesive compartment (not allowing the adhesive layer to adhere to the base layer), finally base layer (using Glassine paper will make it easier to separate the decal from the base). This is the cheapest material, easy to print, can print in many different colors. However, it is easy to absorb water, easily torn, broken, when peeled off often leaves a glue mark.

Print Decal Broken
This is a special paper decal material, it will be torn into pieces (broken) when peeled off the pasted surface. Broken decals are often used as sealing stamps, warranty stamps.

Silver decal
This is a type of decal that is coated with a layer of silver on top to make the print more beautiful and durable.

Plastic Decal
Plastic decal also includes 4 layers like paper decal, only the top layer is plastic (PP, PE or PVC), in which PP plastic decal is the cheapest. Plastic decals are waterproof, glossy prints are more beautiful, harder to damage than paper decals, but the cost is 3-5 times higher than paper decals.

Clear Decal
This is also a type of plastic decal, the top layer is transparent, see-through plastic. It is more beautiful and luxurious than regular plastic decal, the price is a bit higher.

How Flexo Printing Machine Works

Unwind and Infeed
The substrate roll is fed into the printing press. Tension must be kept taught to prevent slack which can cause wrinkling, misregistration, web breaks, and other print defects.

Enclosed Doctor Blade Inking System
A continuous cycling pump fills the enclosed chamber with ink. The ink is transferred onto the anilox roll with any excess removed by the doctor blade. The ink cycles in and out of the enclosed system during printing. To learn more about the ins and outs of ink, we've created an Ink 101 Guide, too!

Inking Anilox Roller
The anilox roller contains microscopic cells which carry a thin layer of ink from the inking system to the image carrier. You can use 4 main types of inks: water-based, solvent-based, oil-based, and UV inks. Finding the right ink composition is important for anilox and image carrier material selection.

Image Carrier and Impression Cylinder
The image carrier transfers the image to the substrate.
The flexographic press pulls the substrate between the image carrier and the impression cylinder. Simultaneously, the impression cylinder holds exactly the right amount of pressure on the substrate for even ink distribution.

Drying
The substrate winds through roller-less and plate-less sections to dry the ink. Depending on the number of colors used, the substrate might pass through multiple image carriers, impression cylinders, and drying sections in a single print run (one per color).

Outfeed and Rewind
The final step on a flexographic printing press is the outfeed and rewind, where a substrate is rolled up again in preparation for a cutting die, which will separate individual prints.

Tips for Choosing a Flexo Printing Machine

Operation
Make sure that your business is ready for the new flexo machine. Are you going to need a larger facility to house this new flexo machine? Will you have to train your employees or hire someone new? Thinking about the production process can be helpful when trying to decide what flexo press to get. Will this new machine speed up your current production process? Or will you have to readjust to work around it? While these might not seem like significant considerations, they might make a big difference for the setup cost.

Functionality
Flexo printing machines, like cars, can come with many additional features to increase functionality. Depending on your business’ needs, you may want to consider a machine with:
● A conveyor system
● Extra drying system
● Web cleaner
● Automated inking systems
When examining different potential features, don’t just think about what your business needs right now, also consider what your needs will be in a few years. In five years, will your business need additional flexo printing features? Don’t just opt for the bare minimum when it comes to a flexo printing machine, because in the long run, additional features may make your printing process more efficient and save you money.

Quality
Anytime you make a purchase this large, buying a quality piece of equipment is of the utmost importance. To ensure you have a quality printer, get a machine from a well-known and reputable company. There are several flexo printing machine manufacturers that have strong reputations and offer warranties on their equipment.

Cost
Even though cost is the last on the list, it’s never the last thought in anyone’s mind. Let’s face it, cost is probably the biggest factor when it comes to purchasing a press. With cars, you might be paying extra for a brand. But with flexo printing machines, you pay for quality. Don’t try to save by purchasing too few features or getting a low-quality machine. Machines from unknown manufacturers or used flexo printing equipment might have functionality issues or voided warranties. Purchase new and work with sellers to find financing or other purchasing solutions that don’t require sacrificing functionality or quality.

Maintaining Your Flexo Printing Machine for Proper Care and Maintenance

Do not put off cleaning
Be sure to clean print sleeves and cylinders immediately after running a print job. Putting off cleaning even for a short period of time can cause damage to these delicate equipment components as the ink dries quickly and hardens.

Use the correct type of cleaning solution
Be sure to use the right type of cleaners on your flex so sleeves and plates, as different types of inks are better cleaned with specific types of solutions. Many cleaning processes do not require the use of volatile chemicals.

Avoid abrasive cleaners and methods
Flexo print sleeves are quite durable, although they do typically contain soft surfaces which can be damaged by harsh, abrasive cleaners and methods. Abrasion on these delicate surfaces can scrub away the delicate rubber surface of both the photopolymer and elastomer print sleeves. Avoid using abrasive materials, wire, or metal when cleaning flexo image carriers.

Air dry sleeves to prevent contamination
It might be tempting to wipe your sleeves dry or use an air hose, although either method could contaminate the surface with foreign debris that could negatively affect the quality of your printing. Allowing components to air dry helps to maintain the integrity of the surface.

Prevent UV exposure during storage
Make sure that all cleaning solvents are fully evaporated prior to storing. It is recommended to wait at least four hours before storing cleaned plates and sleeves. Wrapping these components in a black-backed film or paper can help to block UV rays and ozone, which could alter the physical properties of this delicate equipment.

Maintain steady temperatures during storage
The temperature during storage conditions can greatly affect flexo printing components. It is important that the storage temperature does not fall below freezing at 32°F, is never hotter than 90°F, and is stored with little to no humidity. Flexo print sleeves can crack if they get too cold. Contraction and expansion due to temperature fluctuations cause serious damage to flexo print sleeves.

Store sleeves upright
Always store print sleeves upright and never lay them on the side, which can damage the printing surface. If you must store print sleeves on the side, be sure they are stored properly with a protective cushion to prevent damage.

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Zhejiang Feida Machinery Co.,Ltd is an enterprise which focuses on research and development, manufacture, sale, and after-sales service of Full Automatic Roll Flatbed Die Cutting Machine, Embossing Machine, Creasing Machine and Stripping Machine for Eco containers, for example Paper Ripple Cups, Paper Bowls, Recyclable Paper Products, Paper Ice Cream Cups, Paper Chip Box, High Quality Paper Disposable Cups, Paper Cups Blanks, Paper Cup Sleeves and so on. Feida covers 6000m2 and is capable of manufacturing 200 machines annually.

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Ultimate FAQ Guide to Flexo Printing Machine

Q: What is the function of flexo printing machine?

A: Flexographic – abbreviated to flexo – printing is a form of rotary printing in which quick-drying inks are transferred from flexible printing plates to a substrate. This is primarily used for large-scale printing of text and images on a variety of materials such as plastic, metallic film, paper and nonwovens.

Q: What are the basics of flexo printing?

A: During the process of flexo printing, images are separated into a minimum of four process colours - cyan, magenta, yellow, and black - with the option to include spot colours and over varnishes if needed. The plates are essential for the effective transfer of the desired image or text onto the substrate.

Q: How many types of flexo prints are there?

A: There are 3 general press types, which are CI flexographic presses, Stack flexographic presses and In-line flexo presses. The printing itself can be illustrated this way: The anilox roller ensures that the ink is transferred to the flexible plate and from there press on the web.

Q: Which solvent is used in flexo printing?

A: Examples ethyl acetate, butyl acetate and propyl acetate. Alcohol-based solvents: Such as ethanol and isopropanol, they are common in some ink formulations. These can be obtained naturally through the fermentation of plant materials or synthetically from chemical processes.

Q: Which ink is used for flexo printing?

A: Flexographic inks can be classified into three major types: solvent flexographic inks mainly printed on film, waterbased flexographic inks printed on paper for corrugated board and paper containers, UV flexographic inks used for label application in narrow web printing.

Q: What are the principles of flexography?

A: Image Carrier and Impression Cylinder - The image carrier transfers the image to the substrate. The flexographic press pulls the substrate between the image carrier and the impression cylinder. Simultaneously, the impression cylinder holds exactly the right amount of pressure on the substrate for even ink distribution.

Q: What is the difference between flexo and digital printing?

A: The main difference between digital and flexo is that images used in digital printing are sent from a computer file to the printer, which doesn't require the use of printing plates to generate the image.

Q: What is the problem with flexographic printing?

A: Flexo printing is a pressure-sensitive process. Too little impression can result in defects like skip out, while too high impression can cause problems like halos, doughnuts, and dot gain. Printing defects that occur because of incorrect impression settings: Dot gain.

Q: What is the pH of flexo printing?

A: The desirable pH of the ink is 8.2-9.4. Distilled water pH is 7.0. When water is added to the ink to lower the viscosity, the pH drops.

Q: What substrate is used in flexo printing?

A: Substrates. Flexographic presses can print on uncoated or coated papers, carton board, liner board, aluminum foil, and different types of plastic films, including low-density polypropylene (LDPE), polypropylene (PP), bio-oriented polypropylene (BOPP), and polyester (PET).

Q: How can I improve my flexo print?

A: When selecting the right type of ink for your flexo job, knowing the composition of your substrate is critical. To ensure the highest quality prints while maintaining a profitable speed, make sure the pH level of your ink is compatible with the substrate running at high speeds through the flexo press.

Q: What is ghosting in flexo printing?

A: Ghosting effect in flexo printing appears as a faint, shadowy image that appears out of place. It betrays the sharpness of a design with unintended echoes. Common in solids with negative fonts or windows, ghosting undermines print integrity with faint, unwanted images.

Q: What is the difference between dry offset and flexo?

A: Unlike flexo, offset printing necessitates a flat, smooth surface for printing, making it the preferred choice for paper prints like newspapers and magazines. Notably, offset plates are metal-based, unlike the polymer or elastomer carriers in the flexo process.

Q: What causes banding in flexo printing?

A: Within the print station, common contributors to bounce, gear-marks, and banding include potentially worn or dirty deck screws and keyways, which can cause impression setting and repeatability problems. Worn plates, anilox bearings, and bushings often make setting impression challenging or even impossible.

Q: What is the color separation for flexo printing?

Q: What is the halo effect in flexo?

A: Halo is a serious flexo printing defect that can waste time and substrate (and thus money) if not corrected quickly. The most common causes of the halo effect include: Excessive print cylinder pressure. Irregular print cylinder pressure.

We're professional flexo printing machine manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to buy high-grade flexo printing machine in stock here from our factory.

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