How is print registration adjusted in a unit-type flexo press?

A unit-type flexo press is a modular printing press used in the flexographic printing process. It consists of modular units that can be configured and combined based on specific printing requirements. Each unit of the press comprises various components, such as a plate cylinder, anilox roller, inking system, and impression cylinder, which work together to transfer ink onto the printing substrate.

Unit-type flexo press working image

Advantages and Features

Versatility

Unit-type flexo presses offer great flexibility and versatility in printing applications. The modular design allows for easy customization and configuration of the press based on the desired printing process, substrate, and colors required. This adaptability makes it suitable for a wide range of industries and products.

High Printing Quality

Flexo presses have made significant advancements in recent years, achieving excellent print quality comparable to other printing methods. The unit-type flexo press provides precise control over ink transfer, registration, and color consistency, resulting in sharp, vibrant, and high-resolution prints.

Speed and Efficiency

Unit-type flexo presses are known for their high production speeds. They can handle rapid printing tasks, making them suitable for large-scale printing operations. Additionally, quick setup times and fast changeovers between jobs contribute to improved efficiency and reduced downtime.

Cost-Effectiveness

Flexo printing, including unit-type flexo presses, is generally considered a cost-effective solution for medium to high-volume printing. The presses utilize flexible printing plates, which are more affordable compared to other plate types. Additionally, the ability to print on a wide range of substrates reduces the need for additional printing processes, resulting in cost savings.

Wide Substrate Compatibility

Unit-type flexo presses are compatible with a variety of substrates, including paper, cardboard, films, labels, and flexible packaging materials. This versatility allows for printing on different materials, expanding the range of applications and market opportunities.

Environmentally Friendly

Flexo printing, including unit-type flexo presses, has made significant strides in reducing environmental impact. Water-based and UV-curable inks are commonly used, which have lower volatile organic compound (VOC) emissions compared to traditional solvent-based inks. Additionally, advancements in energy-efficient drying systems contribute to sustainability efforts.

Inline Finishing Options

Unit-type flexo presses can be equipped with various inline finishing options, such as laminating, die-cutting, embossing, and varnishing. This eliminates the need for separate post-printing processes, reducing production time and costs.

Continuous Innovation

The flexographic printing industry is continuously evolving, with ongoing advancements in technology, materials, and processes. Unit-type flexo presses benefit from these innovations, allowing printers to stay competitive and meet the changing demands of the market.

Unit-type flexo press image

Working Principles

The unit-type flexo press works by transferring ink from a plate cylinder to a substrate through an impression cylinder. The following are the key components that make up the working principles of the unit-type flexo press:

Plate Cylinder

The unit-type flexo press has a plate cylinder with a flexible printing plate attached to it. The plate cylinder holds the image or artwork to be printed.

Inking System

Anilox rollers transfer ink to the plate cylinder. The inking system consists of an ink fountain, doctor blade, and anilox roller. The doctor blade ensures an even layer of ink is applied to the anilox roller, which then transfers the ink to the plate cylinder.

Impression Cylinder

The impression cylinder receives the substrate to be printed. It presses the substrate against the plate cylinder, allowing the ink from the plate to transfer onto the substrate.

Drying System

After the ink is transferred to the substrate, a drying system is employed to evaporate solvents or cure the ink. Drying can be achieved through various methods, such as heated air, UV lamps, or infrared radiation.

Repeatable Units

Unit-type flexo presses are designed with repeatable units, which can be combined to achieve multi-color printing. Each unit consists of a plate cylinder, anilox roller, inking system, and impression cylinder. The units can be adjusted and synchronized to ensure accurate registration and color consistency.

Applications

The unit-type flexo press is suitable for various printing applications, including:

Flexible Packaging

Unit-type flexo presses are commonly used for printing on flexible packaging materials, such as plastic films and laminates. They are suitable for applications like food packaging, pouches, bags, wrappers, and labels.

Corrugated Packaging

Flexo presses are widely employed for printing on corrugated cardboard used in packaging boxes and containers. Unit-type flexo presses can handle the large format and high-volume requirements of the corrugated packaging industry.

Labels and Tags

Flexo presses are preferred for printing labels and tags used in various industries, including retail, logistics, and manufacturing. Unit-type flexo presses enable high-quality, durable, and customizable printing on different label materials.

Folding Cartons

Unit-type flexo presses are utilized for printing on folding cartons, commonly used in the packaging of consumer goods, cosmetics, pharmaceuticals, and other products. They offer efficient production speeds and excellent print quality for intricate designs and vibrant colors.

Paper Products

Flexo presses are suitable for printing on a wide range of paper products, including newspapers, magazines, catalogs, books, and stationery. Unit-type flexo presses can handle high-speed printing and large print volumes required in the paper industry.

Unit-type flexo press application image

How to Choose

When choosing a unit-type flexo press, consider the following factors:

  • Printing Requirements
  • Flexibility and Customization
  • Print Quality and Registration
  • Production Speed and Efficiency
  • Substrate Compatibility
  • Inking and Drying Systems
  • Support and Service
  • Budget and Return on Investment
  • Industry Reputation and Reviews
  • Future Expansion and Upgrades

Installation and Maintenance

Installation

The installation of a unit-type flexo press involves several steps:

  1. Site Preparation
  2. Unpacking and Assembly
  3. Electrical and Control System Setup
  4. Testing and Calibration

Unit-type flexo press factory image
Unit-type flexo press factory image
Unit-type flexo press factory image

Maintenance

To maintain optimal performance and extend the lifespan of a unit-type flexo press, regular maintenance is necessary. The following are some maintenance tasks to consider:

  • Regular Cleaning
  • Lubrication
  • Inspection and Replacement

Ever Power

Ever Power is a professional manufacturer of flexo presses. Ever Power is based on the transformation and application of aerospace optoelectronic technology, relying on precision machining and manufacturing capabilities. Dedicated to the research and development of printing and packaging equipment, precision coating equipment, and special electromechanical equipment. The main products include printing equipment, precision coating equipment, new energy and new material production lines, complete sets of water treatment film materials production lines, complete sets of decorative materials production lines, intelligent production lines, and precision processing businesses.

Ever Power has a core technology group including tension system coupling modeling and decoupling control technology, equipment intelligent control technology, precision coating composite technology, high-speed high-definition printing technology, coating curing and solvent residue control technology, and multi-material adaptive winding technology. Ever Power has obtained over 239 national patents and more than 10 national high-tech achievement awards. Ever Power has obtained ISO9001:2015 international quality system certification, SGS certification, and EU CE safety certification, and has a complete after-sales service system.

Ever Power factory image

Ever Power’s flexo presses are a cost-effective alternative to other brands. We encourage customers to explore and purchase our products, which will help improve user stickiness and conversion rates.

Questions and Answers

1. What is a unit-type flexo press?

A unit-type flexo press is a modular printing press used in the flexographic printing process.

2. What are the advantages of a unit-type flexo press?

The advantages of a unit-type flexo press include versatility, high printing quality, speed and efficiency, cost-effectiveness, wide substrate compatibility, environmental friendliness, inline finishing options, and continuous innovation.

3. What are the key components of a unit-type flexo press?

The key components of a unit-type flexo press include the plate cylinder, inking system, impression cylinder, drying system, and repeatable units.

4. What are some common applications of a unit-type flexo press?

Common applications of a unit-type flexo press include flexible packaging, corrugated packaging, labels and tags, folding cartons, and paper products.

5. How do you choose a unit-type flexo press?

When choosing a unit-type flexo press, consider factors such as printing requirements, flexibility and customization, print quality and registration, production speed and efficiency, substrate compatibility, inking and drying systems, support and service, budget and return on investment, industry reputation and reviews, and future expansion and upgrades.