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Packaging Plastic Machine

Wholesale Cast Film Machine Manufacturer

CCIB was established on year 2001, it's producing plastic machine and plastic film as the core industry of manufacturing enterprises. Our products include: Cast Film Machine, Blown Film Machine, Packaging, Plastic Machine, TPU Film, PE Film, PEVA Film, Film Winding Machine, Recycling Machine, Printing Machine, Bag Making Machine.

Why Choose Us

High Production Capacity

CCIB is producing plastic machine and plastic film as the core industry of manufacturing enterprises. The total assets is 1.2 billion, with 500 workers. Our company gained the national patent over 20 items.

Quality Assurance

We focus on technological innovation, and introduce the production technology and processing equipment of world's advanced level. Our quality assurance technicians verify every lot of parts to ensure it meets our customers’ high standards.

Wide Product Range

The main products of Machine and Plastic film are as follows: film blowing machine, film winding machine, recycling machine, printing machine, bag making machine.

Leading Service

We independently complete the R&D, production, marketing, sales, and technical support processes. You just need to send your requirements via email and we can customize the product for you.

Super Transparent EVA Film Making Machine

Brief Introduction to Packaging Plastic Machine

Packaging machinery is used throughout all packaging operations, involving primary packages to distribution packs. This includes many packaging processes: fabrication, cleaning, filling, sealing, combining, labeling, overwrapping, palletizing.

Offset Printing Machine

Advantages of Offset Printing Machine

01/

High-Quality Printing
With offset printing, you can expect a high-quality printed image every time. The printer operator can control the ink flow, which means there are fewer wasted prints that don’t provide enough contrast within the images. As a result, you get clean, sharp images on every piece.

02/

Faster Printing for High Volume Jobs
While there are a few extra involved in creating the metal plate and setting up the equipment, it’s worth the extra work in terms of speed for high volume jobs. Standard printers risk running out of paper or ink during the printing cycle or printing a faded image when ink runs low. But with offset printing, the printer operator can control the ink flow by turning keys to ensure your print quality remains at an optimal level. This means your print job is less likely to be interrupted, which can ensure you get large quantities in less time than a direct printer.

03/

Inexpensive Printing Plates
Each print job will require the print company to create a customized printing plate for your project. With today’s technology, the plates are relatively inexpensive and easy to make and can be used up to a million times (or more, in some cases) which helps to keep costs low. It’s much cheaper per piece than direct printing, plus you get unmatched quality.

04/

Variety of Printing Materials
One of the more attractive offset printing advantages, this printing method works for a multitude of printing surfaces. You can print your project on leather, vinyl, fabric, metal, varying types of paper and cardstock, wood, and plastic. You can create a truly unique project because you aren’t limited to just paper.

Types of Offset Printing Machine

Sheet-Fed Offset Printing
In this type of offset printing, papers are inserted into the machine one after the other. The pages can be trimmed after the printing or pre-cut to the preferred sizes before they are fed into the machine. Sheet-fed offset printing is commonly used for print projects like business cards, flyers, stationery, letterhead, brochures, etc.
Though sheet-fed machines are a bit slower than web printing machines, they won’t stop printing work in progress if an issue occurs. For instance, if the folder or cutter stops functioning, the printing work will continue. Sheet-fed offset printing is the best option for high-quality publications that should be completed within a reasonable timeframe.

Web Offset Printing
Higher-speed and larger machines are used for web offset printing. In web offset printing, massive rolls of paper are fed into the machine and each page is set apart and trimmed after printing. This type of offset printing is commonly used for both small and medium-sized jobs like newspapers or magazines.
Web offset printing is the best option for large-volume jobs that should be completed in a timely fashion.
Since web printing machines can print on both sides of the web at the same time, they can be used to print folded papers like books or magazines easily. One of the main advantages of web offset printing is that it has the lowest cost per copy.

Applications of Offset Printing Machine

Commercial Printing

Commercial products including brochures, catalogs, and business cards are frequently printed using offset technology. It is the perfect option for promotional items because it can produce high-quality prints in large quantities.

Packaging and Labels

Offset printing's versatility extends to packaging and labeling . It can accommodate various packaging materials and deliver intricate designs, ensuring products stand out on the shelves.

Newspapers and Magazines

For newspapers and magazines, offset printing is significantly used in the publishing sector. In this industry, consistency in quality, quick turnaround times, and cost efficiency are essential.

Stationery and Marketing Collaterals

Offset printing is instrumental in creating stationery items such as letterheads, envelopes, and notepads. It's also a preferred choice for marketing collaterals like posters and flyers.

Components of Offset Printing Machine

Plate Cylinder

The heart of the printing process, the plate cylinder, is responsible for transferring the image onto the printing material. This cylinder, along with its associated components, forms the core of the Offset Printing Machine.

Inking System

Efficient ink distribution is a cornerstone of quality offset printing. The inking system, composed of rollers, ducts, and the ink fountain, ensures accurate ink application, contributing to vibrant and precise prints.

Blanket Cylinder

The blanket cylinder is in charge of transferring the image from the plate cylinder to the printing surface. It plays a vital role in maintaining the offset printing principle and requires careful maintenance to ensure consistent results.

Impression Cylinder

This component brings the substrate in contact with the blanket cylinder to create the final print. Precision in alignment and pressure adjustment is crucial to achieve sharp and accurate prints.

Feeder and Delivery System

The paper feeder and delivery system ensure the smooth movement of printing materials through the machine. Proper functioning of these parts is essential to prevent jams and maintain a continuous workflow.

Bag Making Machine

Benefits of Bag Making Machine

Multi-Functionality

Automatic machines being the most advanced equipment with the latest technologies, offer the ability to perform multiple functions simultaneously. One need not have different machines for each type of paper bag but can produce diverse paper bags on a single machine by changing the settings.

Increased Production

In the present and into the future, business owners are looking for machinery that can offer increased production to meet their committed schedules. No one needs a process that lags but needs an adept one that can produce the maximum number of products in a shorter period.

Finest Quality Bags

In contrast to traditional handmade paper bags, the ones produced with the help of automatic machines have the precision and quality most required. The quality of paper bags is of paramount importance as they get used in the packaging industry, and everyone needs strong and durable bags.

Saves Manpower

It is a known factor that machines outperform human labor. A machine can work quicker and better without taking any breaks in between. Thus, business owners prefer machines over manpower and can save a significant amount of money on labor expenses. Machinery needs an initial investment, but it is the optimal choice for the long run.

Features of Bag Making Machine

Automatic Feeding and Sliding Blocks
Incorporates automatic feeding and sliding blocks to enhance production efficiency, reduce manual intervention, and safeguard plastic bag integrity.

Transmission Device
Uses imported wear-resistant plastic material in the transmission device, preventing scratches on the plastic bag.

Overcurrent Protection
Equipped with a high-sensitivity overcurrent protection circuit that automatically senses and cuts off high-cycle suppression sparks to protect the mold.

Intelligent Operating System

Adopts an intelligent operating system for the automatic processing of plastic film forming in a single operation.

Sealing Performance

The finished zipper bag exhibits excellent sealing performance with no noticeable scratches or wrinkles.

Electronic Counting

Utilizes electronic counting and multi-speed material pulling for high production efficiency.

Versatile Functionality

Offers diverse functions, making it suitable for producing a variety of plastic bags.

What are the main types of Bag Making Machine

Pouch Bag Making Machine
The pouch bag making machine is a packaging machine developed based on the plastic production technology. It is capable of extruding thin film and punching holes in thin film, the machine suitable for various kinds of materials such as HDEP, LDPE, PP, and more. The pouch bag making equipment is widely used in producing bags for medicine, chemical products, food and beverage industries.

Garbage Bag Making Machine
Normally the garbage bag making machine can make the garbage bag in a roll or fold the bags with a folding system. In the market, there are three types of garbage bags that are designed to suit the requirements of consumers, for example: regular sized garbage bags, tough bags and heavy duty garbage bags. Any of these three bags can be produced by the garbage bag making machine.

Bag on Roll Making Machine
Bag on roll making machines are designed to convert plastic films into coreless plastic bag rolls such as garbage bags, trash bags, trash bin liners, and etc. The machine includes a feeding system, cutting system, reeling system and sealing system. It can produce different types of plastic bags with different thicknesses and sizes according to customers’ requirements.

T-Shirt Bag Making Machine
This machine is used for making the T-shirt bag. It can cut the bag and sew it one time, the material such as HDPE, LDPE, and Recycled Material will be heated and cut, then the bag will be sewn by sewing wheel automatically. The whole process of making a T-shirt bag only needs less than 3 minutes, which is very fast and efficient.
The main feature of the t-shirt bag making machine is that it can cut the material by hot cutting type, which is more durable and reliable than cold cutting type. The machine is widely used in many industries, such as the garment industry, cosmetic industry, food packaging industry etc.

The Considerations for Buying Packaging Plastic Machine

The Speed of the Machine

The speed of a Plastic Bag Making Machine is an important factor to consider when selecting a machine for your needs. The speed of the machine will determine how fast it can produce bags, which can have an impact on your productivity and efficiency.
There are several factors that can influence the speed of a Plastic Bag Making Machine. These include the type and thickness of the material or film being used, the feeding length and the complexity of the bag-making process.

The Degree of Automation

Fully automatic machines are able to complete the entire bag-making process without the need for manual intervention, while semi-automatic machines require some manual operation. Fully automatic Plastic Bag Making Machine are typically more expensive than semi-automatic machines, but they offer several benefits. They can operate continuously without frequent stops, which can improve productivity and efficiency. If you want your labels attached to the finished bags, you can have an additional unit to make your rolls with sticking paper labels.

Electronic Control System

To ensure efficient bag production, it is important to have a high-quality and stable electronic control system in place. One of the most important benefits of a high-quality and stable electronic control system is consistent production quality.
The system is to have consistent machine function, such as precise feeding of bag length, sealing or rewinding, in order to maintain the consistent output. By ensuring that the bags produced by the machine are of a consistent size and quality, the electronic control system helps to reduce the risk of defects and wasted materials, which can save time and money in the long run.

Technical Support

Technical support is essential for Plastic Bag Making Machine because these machines are complex and specialized pieces of equipment that require regular maintenance and support to ensure they are operating correctly. Technical support can help to identify and resolve issues with the machine, provide guidance on how to use the machine properly, and assist with troubleshooting and repair when problems arise.

Our factory

We also invested three plastic film company in aboard as below:
●Vietnam: VINA KAILO CO., LTD
●Indonesia: PT. KAILO SUMBER KASIH CO., LTD
●Egypt: Egyptian Arabic for Paper Productions

Contact Us

Phone

+8613505927626

Address

612, Building 9, Donghai Cross-border E-commerce Ecosphere, Fengze District, Quanzhou

E-Mail

ivy.su@cnccib.com

Frequently Asked Questions

Q: What are the applications of Plastic Bag Making Machine?

A: Garbage Bags
The garbage bags include draw tape bags, star sealed bags, flat or gusseted bottom sealed bags with folding,etc. Garbage bags are one of the most common uses for a bag on roll machine. These machines are commonly used for the production of garbage bags due to the high volume production requirements and the need for bags in a variety of sizes and thicknesses.
Retail Bags
Retailer bags include vegetable bags, T-shirt bags, Flat or gusseted bottom sealed bags, start sealed bags, etc. Retail bags are another popular plastic bag produced by a bag on roll machine. These bags are often used in grocery stores as well as other locations where shoppers can purchase items such as food or household supplies. Bag on roll machines can be used to produce a variety of retail bags, including shopping bags, carryout bags.
Plastic Laundry Bags
Disposable laundry bags are often used in hotels, dormitories, and other shared living spaces to help keep dirty laundry separate from clean laundry. A bag on roll machines can be used to produce both small and large sized laundry bags that are made from different types of materials.
Table Cover or Table cloth
Disposable Plastic table covers or table cloths are a popular choice for events and settings. They offer convenience and protection, which is why they're widely used in banquets, picnics, outdoor events and restaurants in Arab countries. The bag on roll machine is the perfect solution for mass production of plastic table covers as it ensures high speed and efficiency in the production process. With its advanced technology and features, the machine can produce high-quality plastic table covers that meet the needs of various industries.

Q: Does Plastic Bag Making Machine require regular maintenance?

A: Yes, Regular maintenance is essential for ensuring that a bag on roll machine operates at its best performance and efficiency. To maintain the machine, it is important to lubricate all moving parts according to the manufacturer's recommendations. This helps to reduce friction and wear on the machine. Additionally, belts and cables should be inspected for any signs of wear or damage, and replaced if necessary. Check the rollers and other key components of the machine for any wear or damage, and replace them as needed. Proper maintenance will help keep the machine running smoothly and efficiently.

Q: What are the benefits of plastic bag making machine?

A: Produces double & triple layer plastic bags•Automatic machinery•High production rate •No maintenance•Higher efficiency•Produced plastic bags come in different colours, requirement-based layered feature or film.

Q: Which plastic grade does plastic bag making machine produce?

A: A plastic bag making machine is responsible for producing different plastic grade bags such as PP (polypropylene), HDPE (high-density polyethylene), LDPE (low-density polyethylene), BOPP, PVC etc.

Q: What is the use of a plastic bag making machine?

A: Plastic bag making machine produces shrinkable bags, biodegradable bags, lamination film, shopping bags, stretch film, film for liners etc.

Q: What are the types of a poly bag making machine?

A: On the basis of operation: Manual, semi-automatic and fully-automatic poly bag making machine.
Types of bag: Side-seal poly bag, bottom-seal poly bag, laminated poly bag.
Types of poly bag materials: HDPE bags, LDPE bags, BOPP bags, PP bags.

Q: Does poly bag making machine manufactures eco-friendly poly bags?

A: Yes, a poly bag making machine manufactures poly bags which are 100% eco-friendly and recyclable. It uses recyclable and biodegradable plastic materials such as PP (polypropylene) and PE (Polyethylene).

Q: What are the advantages of a poly bag making machine?

A: Robust construction
Smooth operation
Higher production rate with high efficiency
Easy installation and user-friendly operation
Less maintenance

Q: How are machines involved in manufacturing plastic bags?

A: The bag making machine produces a bag by unwinding a roll of plastic film through a series of operations like (heat) sealing, cutting, slitting & stacking. Typical products are garbage bags, T-shirt bags, shopping bags and bags with a draw-tape. Bagmaking machinery creates a lot of static electricity.

Q: What are the advantages of Offset Printing Machine?

A: Exceptional Image Quality
Offset Printing is famous for its tremendous picture quality. The oblique switch method and using rubber blankets permit particular and consistent ink software. This results in sharp and bright photographs with wealthy shade saturation and excellent details.
Cost-Effectiveness
While offset printing may have better setup charges as compared to virtual printing for shorter runs, it turns into remarkably cost-powerful for large print volumes. As the amount of prints increases, the per-unit cost decreases, making it a cost-effective choice for bulk manufacturing.
Versatility In Substrates
From paper and cardboard to plastic and even metallic, offset printing equipment can handle a wide variety of substrates. Offset printing is appropriate for a wide range of applications and industries because of its versatility.
Consistent And Accurate Colors
Printing requires color uniformity, especially when preserving emblem identity. Offset printing shines in this area, providing accurate color copies across various print runs and materials.
Ideal For High-Volume Printing
When it comes to excessive-extent printing, offset printing reigns very best. The efficiency of the system, mixed with the potential to print massive portions in a shorter time frame, makes it the cross-to desire for organizations with widespread print necessities.
Compatibility With Specialty Inks
Specialty inks, along with metal and fluorescent inks, can be seamlessly included in offset printing. This opens up creative opportunities for fascinating designs and charming visual effects.

Q: What is one characteristic feature of an offset press?

A: One of the key characteristics of the offset press is that it can print six varied colors simultaneously. Offset press was a breakthrough wherein new techniques of paper feeding, photoelectrical technology, and new metal plates were introduced.

Q: What are the features of Multi Color Flexo Printing Machine?

A: Machine form: High precision gear transmission system,Use big gear drive and register the color more accurate.
The structure is compact. The parts of the machine can interchange standardization and easy to get. And we chooser low abrasion design.
The plate is really simple. It can save more time and cost less.
The printing pressure is smaller. It can decrease the waste and make the service life longer
Print many kinds of material include various thin film reels.
Adopt High precision cylinders, guiding rollers and high quality Ceramic Anilox roller to increase the printing effect.
Adopt imported electric appliances to make the electric circuit control stability and safety.
Machine Frame: 75MM thick iron plate. No vibration at high speed and have a long service life.
Double Side 6+0; 5+1; 4+2; 3+3
Automatic tension, edge, and web guide control
We can also customize the machine according to customer requirements

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 different types of flexo printing machines?

A: There are 3 general press types, which are CI flexographic presses, Stack flexographic presses and In-line flexo presses.

Q: What is the biggest advantage of a flexographic printing press?

A: Flexographic printing is known for being a fast process. Once the initial setup is complete, the combination of quick-drying inks and automation result in very high performance. In addition, this method gives you the possibility to preset the amount of ink used in the printing process.

Q: What are the Characteristics of Flexo Printing Machine?

A: ●Strong adaptability
Flexographic printing presses use elastic plates to print images, using the letterpress printing method.
Can adapt to the curved surface of different types of materials, including paper, plastic film, metal foil, etc., to achieve flexible printing applications.
●High printing precision
Through the precise adjustment of printing parameters and the support of the control system, the Flexo printing machine has high printing accuracy and color reproduction.
●Multi-color printing
Flexo printing machine have the advantage of multi-color printing, including full-color printing and special color printing. A Flexo printing machine generally has multiple printing units, and each unit can independently control the color and printing pressure.
●Quick Setup and Adjustment
The Flexo printing machine can quickly change the printing image and adjust the printing parameters.
Because flexographic printing machines are usually equipped with automatic registration system and color control system

Q: What does Rotogravure printing presses consist of?

A: Printing cylinder: a seamless tubular sleeve or full cylinder, made from either steel, aluminum, plastic, or composite material, which is engraved with the image to be printed.
Doctor blade: the device that removes ink from the non-engraved portions of the printing cylinder and also removes excess ink from the engraved sections.
Impression roller: a rubber covered sleeve that is mounted on a steel mandrel. Its primary purpose is to press the substrate against the printing cylinder.
Inking system: consisting of an ink pan, ink holding tank, and ink pump with supply and return ink pipes.
Drying system: consisting of a chamber which dries the ink once it is on the substrate and prior to it reaching the next printing unit. Drier capacities are determined based on the required printing speed, ink type (solvent or water based), and ink lay down volume.

Q: What are the applications of Rotogravure printing presses?

A: The process offers the ability to transfer ink consistently, across a wide range of densities, and at high speeds, making it suitable for applications which require high image quality, such as publishing, packaging, labels, security print, and decorative printing.
The durable nature of the printing cylinders used makes gravure printing an ideal process for providing high quality print on very long or regularly repeating runs, delivering cost advantages over other processes.

Q: What are the characteristics of Rotogravure printing presses?

A: Unwind and Rewind: Tilting the double location, receiving and replacing material without stopping the machine
Printing:360 degrees adjustment gearbox, with guide roller fine-tuning, Don’t stop registration device movable type doctor blade, transverse reciprocating motion（optional pressure rollerblades and all adopt pneumatic）
Dry oven: Double oven, conjoined twins oven(adopted the company patent technology), centrifugal big fan
Control: Cast iron chassis, Shaft cylinder, Host Frequency Control, But according to the customer request implementation positive, reverse side a continuous printing.

Q: What is a gravure printing machine?

A: Gravure printing is a widely used processing method often used to print large volumes of magazines and catalogues. Opposed to flexoprinting, the ink in gravure printing is transferred from carved micro cavities and not from a relief. These cavities, embedded in the printing cylinder, form the printing pattern.

Q: What are the offset printing types of Offset Printing Machine?

A: Web Offset Printing

Web offset lithography is typical in the printing of newspapers and boxes. In this process, rolls of paper are fed continuously through the machine press and can produce over 5,000 printed materials. In addition, the paper is cut to create identical sheets during this process.

Web-fed offset printing presses can produce over 3,000 papers per minute, w translating to about 80,000 identical sheets per hour, which makes it an ideal option for organizations that need to have large quantities at a fast pace to meet tight deadlines.

Sheet-Fed Offset Printing

Unlike Web-fed, sheet-fed offset lithography produces smaller quantities as sheets of paper are fed individually to the machine. However, this method is still considered a quick printing option compared to other alternatives.

Sheet-fed printing can produce up to 12,000 sheets to 24,000 per hour, but with modernization, this type of printing has significantly improved in speed, allowing it to perform similar functions as the web-fed press.

Q: What are the benefits of using Offset Printing Machine?

A: High Quality: This process produces high-quality images and text with excellent color accuracy and sharpness, making it an ideal choice for packaging projects that require a professional and eye-catching appearance.

Versatility: It can be used on various surfaces, including paper, cardboard, and plastic, making it a versatile printing technique for different types of packaging.

Cost-Effective: Litho-printing is cost-effective for large-scale production runs and has lower setup costs than other printing methods.

Consistency: Offset printing produces consistent results across large production runs, ensuring that the final product meets the desired quality standards.

Q: How does Offset Printing Machine work?

A: The first cylinder used in the offset printing process is the ‘plate’ cylinder. This thin cylinder has a plastic or aluminium plate around it. Each plate is customised according to the text and images to be printed onto the paper. The plate cylinder has been pre-treated to have the images attract ink and repel water. When the plate cylinder spins, it will make contact with rollers that apply the ink and water.

The second cylinder is the ‘offset blanket’ cylinder. This cylinder has a rubber blanket around it and turns in the opposite direction to the plate cylinder. When both cylinders roll against each other, water is squeezed away and ink is transferred onto the rubber blanket. This creates a mirror image of the ink design.

The third cylinder in the offset lithography process is the ‘impression’ cylinder. Made of clean steel, it turns in the opposite direction to the blanket cylinder. The impression cylinder transfers the ink as it presses paper against the rubber blanket.

Q: What systems does Offset Printing Machine consist of?

A: The sheet control system

This mechanism transfers the sheets of paper that will be printed on through the press.

In the feeder section sheets are picked up from a paper pile. The stack of sheets is placed on an adjustable pile table. Jets of air and/or a vacuum make sure the feeder mechanism only picks up a single sheet of paper each time. That sheet is then transferred to a feedboard where it is properly positioned before being transferred to the printing unit.

In the infeed section each sheet of paper is transferred to grippers on the impression cylinder.

If the press has multiple printing units, the transfer section assures that the sheet moves to the next impression cylinder. This is typically done using some kind of chain mechanism.

Once the printed sheet leaves the final impression cylinder, the delivery section carries the sheet to the delivery pile. This is a table on which the printed sheets pile up in a stack.

One or more printing units

A printing unit contains everything needed to print one color on the sheet of paper that is moved around by the sheet control system. Offset presses typically contain 1 to 10 printing units. A single-color press obviously contains one single unit to transfer ink to one side of the printing sheet. To print on the other side you have to wait until the ink has dried, then rotate the pile of paper 180 degrees and print on the other side. A press with 4 printing units can print full-color text and images using cyan, magenta, yellow and black ink. Often a fifth printing unit is added for varnish or maybe adding a special metallic ink or so. Such a press with 5 units still only prints on one side of the paper. By adding a reversing cylinder and another 5 printing units, you end up with a very long and expensive press with 10 printing units that can print up to 5 colors on both sides of the press sheet. Such a press that prints on both sides of the sheet simultaneously is called a convertible perfector press.

A printing unit consists of the following components:

The inking system

The ink fountain is a reservoir that holds ink. Offset ink is not a fluid ink, it looks more like a kind of thick paste. From the ink fountain, this ink needs to be transferred to the printing plate or cylinder. From there that ink will be transferred to the paper or another substrate. The inking system is responsible for this transfer. It needs to break the thick, viscous ink down into a thinner, more workable, and uniform ink film. This is done using a set of rollers. Presses can have up to 10 (or even more) rollers in their roller train. The amount of ink is usually controlled by so-called fountain keys that control the gap between the ink fountain and the first roller. The wider open this gap is, the more ink can be picked up by the roller. Controlling that gap is done manually with a screw on some presses but nowadays those keys are often motorized. The fountain keys are lined up in a series across the width of the ink fountain so that more ink can be transferred to the left part of a page if there are more images or solid tints on that side of the paper. Some presses do not use fountain keys: they periodically dip the first ductor roll in the ink fountain and control the amount of ink that is picked up by the duration of that dip. The inking system assures that a thin layer of ink that is typically 0.2 to 0.4 mils thick is transferred to the printing plate.

The dampening system

The dampening system makes sure the non-image areas of the printing plate are moistened so that they will repel ink. This is mainly done using water, but additives are needed for long print runs to improve the ink repellency, lower the surface tension, desensitize the non-image plate regions and make sure corrosion, mildew, bacteria, and fungi don’t cause issues. That’s why gum, alcohol, a fungicide, and other agents are added to the water of the fountain solution. To make sure an even layer of water is put down on the non-printing parts of the printing plate, a mechanism similar to the inking system is used. The dampening system is, however, less complicated and requires fewer rollers.

The plate, blanket and impression cylinders

The plate cylinder is a large roll to which the printing plate is attached. The plate is usually made of aluminum. Its non-imaging parts will be covered by a thin layer of water that is applied by the dampening system. This means the ink which is fed by the inking system will only adhese on all the other areas. During printing, this image created by ink is transferred to a rubber blanket that is attached to the blanket cylinder. From there is the image is transferred to the press sheet. An impression cylinder carries the paper through the printing unit and provides a hard backing against which the blanket can impress the image on the paper. Not all presses use impression cylinders: there are for example perfecting presses that print blanket-to-blanket: the impression cylinder is replaced by a second blanket cylinder, printing both sides of the press sheet simultaneously in a single printing unit.

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