Is Fluid Reduction Enough?

Tucked away in some of the lesser-known corners of LinkedIn, there are a few flexography discussion groups that are often technical and quite interesting to a point.  These groups however often come at the expense of becoming a product showroom with so many suppliers competing for space and sales to the detriment of the average group member.  This is none more true with the case of anilox laser cleaning suppliers.

After reading a recent AI-assisted post enthusiastically outlining why laser cleaning could solve “the anilox problem” — and, apparently, the many ills of every other cleaning system on the market — I found myself wondering what the long-term picture actually looks like.

So here’s my question:

How are buyers comparing the total system impact over the lifetime of fluid-based anilox cleaning equipment versus laser-based systems?

Focusing on that point, I’d like to pick up on a well thought out and often repeated argument used by laser suppliers: fluid consumption. We can all agree that reducing chemistry and overall fluid use is a positive. Even with the vast improvements in cleaning chemistry over the years, in terms of performance, safety, disposal, and operator handling, the drive is still to do more with less.  This is often driven home as the reason a laser cleaner is your best and only bet.  It’ll clean aniloxes whilst being the greenest system there ever was or will be and will cure every ill of every anilox cleaner that came before it (I have my own thoughts on this, but let’s stay focused on the point at hand).

In practice, many print shops and plants are discovering all too late that this metric, often used to justify a laser cleaner, comes with trade-offs: higher energy density, limited throughput and cleaning speeds, thermal interaction at the roll surface, extraction and enclosure requirements, ongoing maintenance, and compliance considerations, including long-term operator safety.

It’s also worth remembering that laser cleaning is an ablation-based process, removing ink from cells via thermal interaction (burning, to you and me). From narrow to wide web applications, anilox rework linked to laser cleaning is something I’m seeing with increasing frequency from country to country.

When you look at it end-to-end, the cost comparison can become quite stark. Even using very conservative assumptions for corrugated applications, the capital outlay for a single laser cleaning system can be comparable to the total ownership cost of a two-roll ultrasonic cleaning system, including consumables, spares, servicing, and even replacement over its working life and beyond, for those of you who believe in reincarnation.

Let me put it another way: Crazy as this sounds - the capital cost delta is so extreme that, on paper, you could fund decades’ worth of Alphasonics Advanced Cleaning Systems (including running costs and replacement)n— on the order of 25–30 years — for less than the upfront purchase price of a single-roll laser cleaner.

When unavoidable factors such as high energy consumption, specialist skills requirements, replacement laser heads, extraction infrastructure, and the cost of anilox rework due to laser damage are properly accounted for, the lifecycle picture shifts even further.

One aspect that is rarely discussed openly is what happens downstream. Laser cleaning systems do not eliminate contamination; they concentrate it. The particulate matter removed from anilox cells is captured in disposable HEPA filtration, which must then be handled, transported, and ultimately disposed of.

Multiple independent studies have shown that ultrafine and nano-scale particulates generated through high-energy ablation processes can present carcinogenic and respiratory health risks when inhaled or improperly handled. These particulates do not disappear; they are transferred into filtration media and subsequently into the waste stream.  This is a far cry from the ‘zero waste’ claims we’re hearing from laser cleaner suppliers.

In practice, this shifts risk rather than removing it. Exposure is displaced from the pressroom to the disposal chain — from in-house handling, through third-party waste management, and ultimately to landfill. Framing this as a sustainability win on the basis of fluid reduction alone ignores where that risk and responsibility are transferred.

Sustainability cannot simply mean ‘out of sight, out of mind.’ When responsibility is displaced rather than removed, this is not sustainability at all, but a form of environmental and occupational NIMBYism.

As flexo industry professionals, we’re all aware that when it comes to an anilox, the real cost isn’t just cleaning, but roll life, repeatability, and risk. Those outcomes only come with tight control of the roll, starting with the cleaning system.

For that reason, fluid usage alone is an incomplete metric. I can only speak for myself here, but when chemistry is used at ~10% concentration in our systems, the waters are muddied further… excuse the pun.

Would genuinely like to hear how buyers are weighing initial capital outlay, energy consumption, roll integrity, operator exposure, and lifecycle cost alongside fluid reduction.

Is this truly a picture of sustainability?