Flexographic Printing Blog

4 Ways Direct Laser Engraving (DLE) Boosts Flexo Print Efficiency & Quality

Posted by Luminite on Feb 6, 2018 11:50:32 AM
Luminite

Direct Laser Engraving

You likely recall the flexo printing evolution through the years in response to pressures from economy and demand. As industries produced more, they required more packaging (of different varieties). And as they’ve required more packaging, they’ve required higher-quality printing to identify and promote their products.

So flexo industry thinkers have continually returned to the drawing board to increase productivity and quality:

  • More press uptime
  • Higher speeds
  • Continuous print
  • Fewer printing defects
  • Less time troubleshooting
  • Less waste
  • Brighter colors
  • More diverse capabilities

The result? Direct laser engraving (DLE) elastomer sleeves.

Improve Flexo Printing with Direct Laser Engraving

Despite some lag time being adopted in the North American flexographic market, DLE has emerged in response to the prevalence of in-the-round (ITR) elastomer sleeves. They’re produced by removing non-printing areas through laser ablation.

Washing down photopolymer usually involves solvents that can be harmful to users and the environment if not disposed of correctly. Elastomer blends don’t require such solvents, and in most cases are cleaned up with a water- and soap-based cleaning detergent after the laser-ablation process.

For decades, flat photopolymer plates dominated the flexo market in North America. But in some applications, flat plates yield costly quality control issues like press misregistration. ITR sleeves have become the solution for a seamless, continuous print.

Here are some of benefits:

1. Increasing Production Speed

There are far fewer steps required to make an ITR elastomer sleeve press ready, as compared to conventional photopolymer plates, digital photopolymer plates, and simple laser-engraved plates. Fewer steps mean fewer chances for error.

Elastomer sleeves’ thickness and durability allow them to print continuously 2 to 4 times longer than photopolymer plates. You won’t need to buy or make multiple plates for long jobs or repeated short jobs, which typically require multiple cleanings and remountings.

Efficienty benefits of Direct Laser Engraving

Additionally, the process requires no extra labor and mounting materials. “Load-N-Lok” and you’re good to go.

2. Eliminating Registration Issues

Misregistration is one of the most common flexographic printing defects encountered in the industry. Quite often, it’s a problem of misalignment. But it also could stem from press mechanics or plate lift. Sleeves can be notched to align with each other as they’re engraved to achieve optimal registration.

Laser-engraved sleeves manufactured in-the-round don’t experience plate lift. You’ll also have fewer issues with cylinder bounce or uniformity.


3. High Definition and Clarity

Laser engraving can create some of the most intricate, detailed images possible. Here are some of the high-def capabilities:

  • Depths up to 0.125″
  • Embossing 2D & 3D
  • Text point size as small as 0.75 for a basic non-serif font
  • Screens for gradients, vignettes and 4-color process up to 175 lines
  • Minimum line weight of 0.001″
  • Multiple engraving profiles

What’s more, elastomer sleeves are resistant to harsh chemicals and abrasion, meaning there’s very little chance for image skewing from wear over time.

4. Cutting Waste and Related Costs

Without registration issues and vulnerability to wear and tear, DLE elastomer sleeves don’t create much wasted substrate. There’s simply no need to waste ink printing costly lengths of substrate, making adjustments, and test more to get the quality you need.

Relatedly, this can also streamline your printing operation and limit labor costs. Your employees should be able to finish projects more quickly and move on to other tasks.

Direct Laser Engraving Achieves Quality & Efficiency

The success of your flexo printing operation hinges upon quality and efficiency. Now, with direct laser-engraving technology and ITR elastomer, you can achieve high-definition prints in a fraction of the time.

With a great cleaning and maintenance regimen, your flexo sleeve investment could last a very long time.

Let’s work toward printing perfection. Can we help? Call (888) 545-2270.

 

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Tags: Flexographic Printing, direct laser engraving

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