Unit-type flexo press waste reduction strategies

by | Apr 9, 2024 | Unit-type flexo press

Unit-type Flexo Press Waste Reduction Strategies

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

Advantages of Unit-Type Flexo Press

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.

Working Principle

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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 of Unit-Type Flexo Press

Unit-type flexo presses are suitable for a wide range of printing applications, including:

  • Flexible Packaging: printing on plastic films and laminates used in food packaging, pouches, bags, wrappers, and labels.
  • Corrugated Packaging: printing on corrugated cardboard used in packaging boxes and containers.
  • Labels and Tags: printing labels and tags used in various industries, including retail, logistics, and manufacturing.
  • Folding Cartons: printing on folding cartons used in the packaging of consumer goods, cosmetics, pharmaceuticals, and other products.
  • Paper Products: printing on a wide range of paper products, including newspapers, magazines, catalogs, books, and stationery.

How to Choose a Unit-Type Flexo Press

Consider the following factors when selecting a unit-type flexo press:

  1. Printing Requirements.
  2. Flexibility and Customization.
  3. Print Quality and Registration.
  4. Production Speed and Efficiency.
  5. Substrate Compatibility.
  6. Inking and Drying Systems.
  7. Support and Service.
  8. Budget and Return on Investment.
  9. Industry Reputation and Reviews.
  10. Future Expansion and Upgrades.

Possible Issues and Solutions

Ink Smearing or Blurring

Problem: Ink smearing or blurring can occur during the printing process, leading to poor print quality and reduced clarity of the printed image.

Solution:

  • Ensure proper ink viscosity and consistency.
  • Adjust the doctor blade pressure to achieve a clean and even ink transfer.
  • Verify that the anilox roller is clean and free from dried ink or debris.
  • Check for excessive plate wear or damage and replace if necessary.
  • Optimize drying parameters to ensure proper ink curing.

Registration Issues

Problem: Registration problems result in misalignment of colors or images, causing a distorted or offset print.

Solution:

  • Verify that all mechanical adjustments, such as gear settings and tension controls, are properly calibrated.
  • Check for worn or damaged gears, cylinders, or rollers and replace as needed.
  • Ensure the plate cylinder and substrate tension are correctly set.
  • Align the printing plates accurately and securely on the plate cylinder.
  • Regularly clean and maintain the registration sensors and control systems.

Installation and Maintenance

Installation

  1. Site Preparation: Ensure a suitable location with adequate space, ventilation, and access for the press installation.
  2. Unpacking and Assembly: Carefully unpack the press components, following the manufacturer’s instructions.
  3. Electrical and Control System Setup: Connect and wire the electrical components of the press, adhering to the electrical safety guidelines and local regulations.
  4. Testing and Calibration: Conduct a thorough testing and calibration process, following the manufacturer’s instructions.

Maintenance

  1. Regular Cleaning: Clean the press components, such as cylinders, rollers, and ink systems, on a regular basis to remove ink residues, debris, and contaminants.
  2. Lubrication: Follow the manufacturer’s guidelines for lubricating the press components to ensure smooth operation and prevent excessive wear.
  3. Inspection and Replacement: Conduct routine inspections of the press components, such as gears, bearings, belts, and sensors, to identify signs of wear, damage, or misalignment.

EVER-POWER Company Introduction

EVER-POWER is a professional factory that manufactures flexo presses. They are based on the transformation and application of aerospace optoelectronic technology, relying on precision machining and manufacturing capabilities. EVER-POWER is 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. They have 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, with a complete after-sales service system.

EVER-POWER’s products can replace other brands and provide excellent quality and performance. We encourage customers to explore and purchase our products, which will help improve user stickiness and conversion rates.

FAQs

  1. What is a unit-type flexo press?

    2. A unit-type flexo press is a printing press used in the flexographic printing process. It is designed with modular units that can be combined and configured according to specific printing requirements.

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

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

  3. What applications are unit-type flexo presses suitable for?

    4. Unit-type flexo presses are suitable for a wide range of printing applications, including flexible packaging, corrugated packaging, labels and tags, folding cartons, and paper products.

  4. How do I choose the right unit-type flexo press?

    5. 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.

  5. What are some possible issues that can occur during the printing process with a unit-type flexo press?

    6. Possible issues include ink smearing or blurring and registration issues. Solutions include ensuring proper ink viscosity and consistency, adjusting doctor blade pressure, verifying that the anilox roller is clean, checking for excessive plate wear, aligning printing plates accurately, regularly cleaning and maintaining registration sensors and control systems, and verifying that all mechanical adjustments are properly calibrated.