4P creates standard for laser-engraved cylinders

Using laser-engraved gravure cylinders without fingerprinting or additional expense

4Packaging building
Comprehensive know-how in printing implementation is an expertise of 4P Image hell Heliograph

4Packaging, a pioneer in laser engraving and an expert in printing technology implementation, has succeeded in harmonizing the printing characteristics of classically engraved and laser-engraved cylinders and thus standardizing laser engraving. In future, the printer will be able to run individual cylinders from the color set or a complete color set with laser-engraved cylinders without additional fingerprinting.

4P Cellaxy engravers
As a pioneer in laser-engraving 4P is equipped with 3 Cellaxy Photo: hell Helioscope

Laser-engraved rotogravure cylinders impress with sharp-edged text. The smoother ink-layer leads to a high-quality ink application, and half-tones are reproduced with greater nuance and contrast. These are all reasons why laser-engraved cylinders are increasingly in demand for high-quality packaging. 4Packaging has now developed a process that greatly simplifies the conversion to laser-engraved cylinders for the printer.

4P cylinder premium prep
Unique is the automated premium preparation of laser-engraved cylinders Photo hell Helioscope

4P has been producing laser-engraved gravure cylinders for 15 years and is thus a pioneer in laser engraving. The premium preparation of laser-engraved cylinders used at 4P deserves special mention. The fully automated line is unique in this way and creates the prerequisite for perfect reproducibility.

Identical LAB values for laser & classically engraved cylinders

The many years of experience in the use of laser-engraved cylinders as well as the comprehensive know-how in printing technology implementation now enable 4P to match the printing characteristics of classically engraved and laser-engraved cylinders and thus standardise laser engraving. The previously required additional fingerprint for laser-engraved cylinders is no longer necessary!

The proof of success was recently provided for several packaging jobs. Previously, these jobs were based on classically engraved cylinders. Now 4P supplied one set each of laser-engraved half-tone and linework cylinders. The standard ink formulations for classically engraved cylinders were used for printing. The result showed identical LAB and density values for all tonal values.

In the run-up, 4P had adapted the laser engraving to the classic engraving in terms of printing technology. For this purpose, a customer-independent adaptation was developed for each screen and screen angle. The customer-specific print adaptation was only carried out during laser engraving by means of the usual helio-gradation, which is also used identically in classic engraving.

Thanks to the newly developed standardisation, the printer can now use the advantages of laser engraving more easily, as the same fingerprint is used as for classically engraved cylinders. The standard ink formulation remains unchanged. The printer can now run individual cylinders from the color set or the complete set of laser-engraved cylinders.

From the helioscope Newsletter issue 04 – 21

The Covid-19 pandemic led to the country-wide lockdown on 25 March 2020. It will be two years tomorrow as I write this. What have we learned in this time? Maybe the meaning of resilience since small companies like us have had to rely on our resources and the forbearance of our employees as we have struggled to produce our trade platforms.

The print and packaging industries have been fortunate, although the commercial printing industry is still to recover. We have learned more about the digital transformation that affects commercial printing and packaging. Ultimately digital will help print grow in a country where we are still far behind in our paper and print consumption and where digital is a leapfrog technology that will only increase the demand for print in the foreseeable future.

Web analytics show that we now have readership in North America and Europe amongst the 90 countries where our five platforms reach. Our traffic which more than doubled in 2020, has at times gone up by another 50% in 2021. And advertising which had fallen to pieces in 2020 and 2021, has started its return since January 2022.

As the economy approaches real growth with unevenness and shortages a given, we are looking forward to the PrintPack India exhibition in Greater Noida. We are again appointed to produce the Show Daily on all five days of the show from 26 to 30 May 2022.

It is the right time to support our high-impact reporting and authoritative and technical information with some of the best correspondents in the industry. Readers can power Packaging South Asia’s balanced industry journalism and help sustain us by subscribing.

– Naresh Khanna

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