Why 10 Colors Is Not “Better 6″—It’s a Different Technology

The first misconception I hear from brand managers: “10 colors is simply more colors.” Not quite. 10 colors simply provides a different set of tools.

Classic four-color printing (CMYK) is the baseline. Cyan, magenta, yellow, black—theoretically, you can compose any color from these four inks. In practice: you cannot. Beyond the reach of CMYK are Pantones, opaque white, varnish, as well as metallics and fluorescents.

Each of these tools is a separate printing station. 6 colors typically means CMYK + two spot colors (most often opaque white + one brand Pantone). 8 colors means CMYK + four additional tools. 10 colors means CMYK + six tools—i.e., a full brand book in one pass of the film through the machine.

What does this give you in practice? You can have exactly that brand shade you have on carton packaging and in digital communication. You can add opaque white under the color so it looks intense even on transparent film. You can add spot varnish to the logo so there is a depth effect on the shelf. You can add a fluorescent that the competition does not have—and the customer’s eye searches for it from a meter and a half away.

The second technological layer: the type of press. Flexo CI (central impression)—with one large central cylindrical drum around which printing stations are arranged—is the premium standard for wide-web. The film is held on the central drum and passes through successive stations without relative movement. Result: perfect color registration (±0.1 mm), zero misalignment on thin films, ability to operate at speeds of 400 m/min.

Other architectures (in-line, stack) are cheaper, but provide poorer color registration on thin PE films. This does not mean they are bad—they simply have different applications. For pellet bags or pallet hoods—they suffice. For beverage multipacks or a pack of toilet paper on the shelf at Lidl—they do not.

And the third dimension: inks. Water-based vs. solvent-based. Water-based inks are now the standard in the packaging industry, as they produce approximately 4 kg CO2e/m² carbon footprint—compared to 12–15 kg for solvent-based inks. Plus no VOCs, no odor, no food contact restrictions. But they require more expensive equipment and a more controlled drying process.

10 colors on flexo CI with water-based inks is not simply “more colors,” but a different technological standard.

Two Printing Systems—In-Line vs. Standalone

At Kablonex, we have both. This is deliberate, because different applications require different solutions.

In-line printing is printing directly from the extrusion line. The film comes out of the extruder, is printed in the same line, and wound onto a roll ready for shipment. Advantage: shorter production cycle, lower unit cost, one process instead of two. Disadvantage: narrower parameter window. In-line printing in our portfolio goes up to 6 colors. This is sufficient for pallet branding and industrial bags, where the number of colors is not the most important factor, but unit cost is.

Example: NEX-HOOD NHD (printed stretch-hood) up to 6 colors, 1800 mm width, with the option to combine printing with PCR dosing. Ideal for pellet pallets with manufacturer logo, fertilizer pallets with distributor branding, construction chemical pallets with GHS pictograms.

Standalone printing is printing on a separate printing line, independent of extrusion. At Kablonex, we have 4 such machines—up to 10 colors, web widths of 300–1800 mm, speeds of 400 m/min. Advantage: full control of print quality, process separation, ability to work with films from various sources (including laminates). Disadvantage: two processes instead of one, higher unit cost.

This is the system for premium retail applications: FMCG packaging on retail chain shelves, beverage multipacks, toilet paper in premium lines, frozen foods in the premium segment, hygiene materials under retail chain private labels.

The decision rule is simple. Are you packaging a logistics product that does not compete visually? In-line, up to 6 colors. Are you packaging an FMCG product that sits on the shelf next to competitors and has 0.3 seconds to catch the customer’s eye? Standalone, up to 10 colors.

Most myths about flexo printing stem from someone trying to apply in-line where standalone was needed, or vice versa. Result: printing that does not meet brand book expectations, or unnecessarily high production cost.

When 6 Colors Are Enough (and It Makes No Sense to Pay for 10)

Here is my clear opinion: in most industrial applications, 10 colors is overkill.

FFS bags with construction chemicals, cement, wood pellets—you print in 4 colors. Logo, product name, EAN and GHS codes, one spot color for the brand. The end customer does not buy cement visually, they buy it by technical specification and price. Investing in 10 colors on a cement bag is wasted money.

Pallet stretch-hood—you print in a maximum of 6 colors, because the pallet is not a product on the shelf. It is a logo carrier in the logistics chain. What matters here is different: print durability, opaque white under intense color, and UV resistance. Six colors on good film will give a better result than ten on poor film.

Example from our portfolio. A domestic fertilizer manufacturer with exports to Europe. They packaged pallets in stretch-hood with flexo printing. The logo contained intense red—a color that fades fastest under UV in classic flexo printing. After several weeks to several months of outdoor storage at distributors, the logo faded, the pallet ceased to function as a brand carrier, sales networks reported lack of visual consistency.

Solution: NEX-HOOD NHD 70 µm in opaque white version, in-line printing in 6 colors with inks of enhanced UV resistance (with emphasis on red stability), UV stabilizer in the film itself, and UV absorber protecting the product inside the pallet. Plus downgauging from 90 µm to 70 µm—because the 5-layer construction with mLLDPE allowed thickness reduction without loss of stabilization parameters.

Results: elimination of complaints for print fading, pallet maintains brand visual consistency throughout the logistics cycle, 22% less film per pallet, protection of fertilizer product from UV degradation. Implementation without modification of the packaging line.

Key takeaway: this case did not require 10 colors. It required better technology within 6 colors. Opaque white + UV stabilizer + good film. This is the quiet revolution in industrial packaging—most problems are solved by ink chemistry and film construction, not by the number of colors.

10 colors make sense when the product genuinely competes visually. Cement bags—do not compete. Fertilizer pallets—do not compete. Pallet stretch-hood—does not compete. Investing in 10 colors in these applications is a classic example of spending money where it does not return.

When 10 Colors Pay Off in Sales

Three situations in which 10 colors are not extravagance, but a return-on-investment.

Situation 1: FMCG Retail Shelf. Your product sits on the shelf at Biedronka, Lidl, Carrefour, or Auchan. The customer walks by with a basket, has 0.3 seconds to catch their eye. The competition prints in 8–10 colors with opaque white and spot varnish, your packaging is in 4 colors on transparent film. Result: the customer sees the competition, does not see you. This is not theory, but real sales data from shelf studies—products with premium packaging have higher turnover, even at similar prices.

Situation 2: Brand with Extended Color Palette. Your brand book has 6 Pantone colors, two spot colors, and varnish. Attempting to reproduce this in CMYK will result in your orange being different on the packaging than on the website, in commercials, and in POS materials. This is not a detail—it is the foundation of brand visual consistency. 10-color flexo CI allows you to reproduce the full brand book in one pass of the film through the machine, without compromises.

Situation 3: Export to Chains with Rigorous Brand Compliance. German chains (REWE, Edeka, Aldi), British chains (Tesco, Sainsbury’s), and Scandinavian chains (ICA, Coop) increasingly require suppliers to fully comply with the customer’s brand book. This means: exact Pantone, opaque white under color, spot varnish, controlled print shrinkage after shrinking. If you print in 4 colors, the chain rejects you or gives conditional entry. With 10 colors, you are the standard.

These are three situations. If at least one applies to your product—10 colors is an investment, not a cost.

Case Study—Premium Toilet Paper with 55% PCR and 10 Colors

One of the most interesting projects in recent years in our portfolio.

Client: hygiene products manufacturer from Central Europe, toilet paper and towels. Two product lines—standard and premium. Business objectives: reduction of plastic footprint (ESG, reporting under PPWR), maintaining machinability on packaging lines, raising the visual standard of the premium line, introducing high PCR content.

Technical challenge: three parameters that classically exclude each other. Thinner film (material savings), more PCR (ESG goal), better printing (premium look). Thinner film usually means loss of mechanical parameters. More PCR means loss of transparency and print quality. More colors means more printing processes and risk of registration misalignment.

Solution: paradigm shift in film construction. A new, multilayer formulation with enhanced mechanical parameters allowed downgauging from 35–40 µm to 28 µm, with simultaneous implementation of 35% PCR in the standard line and up to 55% PCR in the premium variant. Standalone printing on flexo CI, 10 colors with water-based inks, integration with two of the client’s product lines. Machine validation on the client’s line before first delivery.

Results:

• significant reduction in plastic consumption per packaging unit
• achievement of ESG goals and PPWR requirements with strong buffer
• maintained machinability and logistics safety
• premium 10-color printing on both product lines
• stronger client position in negotiations with retail chains

Key takeaway from this case: 10 colors was not the client’s marketing wishlist, but a requirement of the premium line brand book and the chains to which the product is distributed. Without 10 colors, this project would not have closed, regardless of how good the film was.

This is, in my opinion, the most frequently overlooked aspect of the decision on the number of colors: the number of colors is not a marketing decision, but a business decision. It depends on where you sell, to whom, and with what ambition.

What Besides the Number of Colors Determines Print Quality

Brand managers ask me: “We print in 8 colors, why is the result worse than the competition’s in 6?” Answer: because the number of colors is one of the parameters. There are four more that decide.

Anilox Roller and Line Screen. Anilox is a ceramic roller that transfers ink to the printing plate. The higher the line screen (anilox cell density), the more subtle the print and better detail. Cheap anilox = thicker print, less detail. Premium anilox = sharper lines, better stroke, higher image quality. This is a parameter that is not visible in the specification, but is visible to the naked eye on the product.

Plate Technology—HD Flexo. Traditional flexo plates provide printing with limited resolution. HD flexo (high-definition) plates allow printing with resolution close to offset printing—i.e., much better detail, better tonal transitions, photorealistic images on packaging. At Kablonex, we use Politex Full HD technology on premium lines, which provides significantly higher image quality than the market standard.

Film Shrinkage and Prepress Compensation. This is a parameter that upsets every brand manager on the first implementation. Film after thermal shrinkage (NEX-SHRINK) or elastic shrinkage (NEX-HOOD) changes dimensions. A print designed at 1:1 scale will be distorted after shrinking—a round logo will be oval, a square QR code will not scan. The print must be designed with shrinkage compensation. This requires experienced prepress and designer-printer communication. Skipping this step is a classic mistake, the consequence of which is visible only after the first production batch.

Water-Based vs. Solvent-Based Inks. I have already mentioned this, but it is worth repeating in the context of quality. Water-based inks provide more subtle transitions, better color fidelity, and are safe for food contact applications. Solvent-based inks dry faster and are cheaper, but provide poorer color quality and impose regulatory restrictions. At Kablonex, we use water-based inks as standard—this is a conscious decision that costs more in equipment, but provides significantly lower CO2 footprint (~4 kg CO2e/m² instead of 12–15) and full compliance with European chain requirements.

These four parameters together—anilox, plate, shrinkage compensation, inks—determine whether 10 colors look like 10 colors, or like 4 with extras. Without the right technology, the number of colors alone means little.

4-Question Checklist—Does Your Product Need 10 Colors

Before you commission a packaging redesign or start talking to a printer, answer four questions. Honestly.

Question 1: Does Your Product Compete Visually on the Retail Shelf? If yes (FMCG, products on retail chain shelves)—proceed to question 2. If no (B2B, industrial products, bags, pallets)—10 colors is overkill. Stay with 4–6.

Question 2: Does the Brand Book Require Pantones or Spot Colors (Opaque White, Spot Varnish, Metallics)? If yes—10 colors will pay off. CMYK simply will not reproduce a Pantone. If no—6 colors are sufficient, provided you have good film and inks.

Question 3: Do You Export to Chains with Rigorous Brand Compliance (Germany, UK, Scandinavia)? If yes—10 colors is not an option, it is a requirement. German and British chains expect full compliance with the supplier’s brand book, regardless of the manufacturer’s marketing self-identification. If no—you can afford 6.

Question 4: Are You Planning a Visual Identity Refresh Within 12 Months? If yes—design the rebranding for 10-color technology, because otherwise in a year you will return with a request to redo everything. If no—maintain the current standard, optimize quality within the existing number of colors (anilox, plate, inks).

Sum up the answers.

3+ “yes”: 10 colors pay off. Do not postpone the decision, the competition will overtake you.

1–2 “yes”: 6 colors + good film + water-based inks are sufficient. Invest in quality within the existing number of colors, not in the number of colors.

0 “yes”: Stay with 4 colors, optimize unit price, invest the saved money in other areas of marketing.

Four questions, about half an hour of brand manager work, and the decision stays with you for years.

Does your packaging look worse than the competition on the shelf, despite similar price? Do German chains reject your product due to brand compliance? Does the brand manager say “CMYK is enough,” while sales in Germany have been declining for the second quarter in a row?

At Kablonex, we have both flexo CI printing systems: in-line up to 6 colors (NEX-HOOD NHD, ideal for pallet branding) and standalone up to 10 colors on 4 printing machines (Politex Full HD, up to 1800 mm width, 400 m/min). Water-based inks as standard (~4 kg CO2e/m² vs. 12–15 for solvent-based). Machine validation for the client’s specific application. 55 years of experience, BRC, ISCC PLUS, EcoVadis.

Expect: full compliance with brand book on packaging, premium look on retail shelf, lower CO2 footprint reportable under PPWR, ready path to German and British chains.

Send brand book specification and sample packaging. We respond the same business day—a technology advisor will contact you and present a printing system recommendation for your product.

Artykuł When It’s Worth Investing in 10-Color Flexo Printing for Packaging. A Guide for Marketing Directors and Brand Managers pochodzi z serwisu Kablonex.

Over the last 25 years, the packaging film industry has undergone a technological revolution: from monolayer films, through 3-layer constructions, to the now almost standard 5-layer systems. At Kablonex, both these technologies operate in parallel — because each has its place, its customer, and its economics.

In this article, I will break this down. Specifically, from a business perspective, without marketing fluff.

What you will read about:

• What exactly is multilayer extrusion and why it’s not a “one-pot blend”
• What real benefits come from transitioning from monolayer to 3 layers — and what research says about the limits of this technology
• Why 5 layers represent a qualitative leap, not just “two more layers”
• When 3 layers are optimal, and when you need 5 — from the perspective of total cost, not film price
• How this choice impacts recycling, ESG, and compliance with PPWR
• What this means in practice for your packaging line

1. Multilayer Extrusion — What it Actually Is

Many customers think of multilayer film as “puff pastry” — several film layers glued together. This is incorrect.

In the blown film co-extrusion process, each layer is formed simultaneously, at the same moment, in a single die head. We have several separate extruders, each processing a different raw material (or blend), and the molten polymer streams only combine in the die head, forming a single coherent structure. Blowing and cooling occur in the final, multilayer configuration.

This is a crucial difference:

At Kablonex, we work with 1–5 layers, thicknesses from 16–250 µm, and widths up to 3,000 mm — which gives us full structural flexibility within a single technology.

2. Why 3 Layers Changed the Industry

Blown film co-extrusion appeared commercially in the late 1960s (Dow launched its first 3-layer lines for Oscar Mayer in 1967 for bacon packaging), and over the next two to three decades, it became a market standard. For the flexible packaging industry, this was the first real structural revolution — it allowed manufacturers to separate functions into different film layers instead of seeking a compromise in a single formulation.

In Poland, this technological leap occurred with a delay compared to Western leaders. At Kablonex, the first 3-layer film production line entered the production hall in the late 1990s, opening the company to advanced packaging segments. The 5-layer line appeared only after 2010 — in parallel with the launch of our own recycling plant.

Logic of 3-layer construction (A/B/A or A/B/C arrangement)

• Outer layer (A) — responsible for stiffness, optical parameters, printability, temperature resistance
• Middle layer (B) — mechanical carrier, space for recyclate (PCR), cost regulator
• Inner layer (A or C) — sealing layer (hot-tack, SIT, peel)

What did this bring to the market? Since its introduction, 3-layer co-extrusion has significantly improved the mechanical properties of films compared to films of the same composition made in a monolayer construction.

In practice, this means lower grammage with the same strength, better control over sealing, and the ability to use cheaper raw materials in the middle layer without losing performance parameters.

But 3 Layers Have a Ceiling

And here’s where it gets interesting. In recent years, it has become clear that the limit of maximum mechanical properties achievable in 3-layer films has been reached in many applications — even with the use of the latest polyolefin resins.

In other words: further optimization of the 3-layer formulation ceased to yield results. To go higher, the architecture needs to change.

3. What Real Benefits Come from Transitioning from 3 to 5 Layers

This is not about “adding two layers for effect.” It’s a completely different construction logic.

5-layer architecture (typically A/B/C/B/A or A/B/C/D/E)

In a 5-layer system, we have two additional functional layers at our disposal — most often called sub-skin layers — which act as bridges between the outer layers and the core. This allows for:

• Better matching of raw materials in each layer to its specific function
• Thinner distribution of expensive components (e.g., metallocenes, functional additives)
• Introduction of a barrier layer (EVOH, PA) without compromising sealability
• Increasing the thickness of the middle layer with PCR without losing surface properties

What Science Says

5-layer films have existed for many years, but initially, they were mainly used to create structures with a barrier layer from non-polyolefin raw materials. The die heads used had very thin core layers because barrier resins are relatively expensive. Purely polyolefin films produced on such equipment did not show significant advantages over 3-layer counterparts.

This has changed. Modern 5-layer die heads are designed with a more balanced distribution of layer thicknesses, which, according to patent and review studies, allows for significant improvements in mechanical properties compared to the best 3-layer films — even when both structures are based on the same raw materials.

In Numbers — What Exactly Improves

According to aggregated industry data, multilayer systems produce films with better aesthetics and functionality, achieving 85–90 gloss units (GU) compared to 40–60 GU in monolayer. Co-extruded surface layers also improve slip parameters (coefficient of friction 0.2–0.3) and reduce haze below 5%.

In the context of specific food applications, 5-layer structures with EVOH (PE/PE/Tie/EVOH/Tie/PE/PE extended to 7 layers) have allowed oxygen permeability to be reduced to values below 10 cm³/m²/day while maintaining high mechanical parameters of PE film. This is the level that determines whether frozen foods, aged cheeses, or vacuum-packed meat will withstand their declared shelf life.

4. When 3 Layers Are Enough, and When You Need 5

This is a question every product manager and procurement professional in a packaging company should ask themselves. The answer depends not on the price of the film, but on the total cost of your process.

3 layers are optimal when:

• The application does not require a gas barrier (most industrial, technical, palletizing applications)
• The packaging line operates stably, without temperature bottlenecks
• The product does not require a long shelf-life
• Volume is very high, and margins are low — and every penny per kilogram counts in the P&L
• The film is dedicated to a process with low tolerance for contamination within the seal

5 layers are justified when:

• Products sensitive to oxygen, moisture, or aromas are packaged (frozen foods, coffee, cheeses, meat)
• Seal process stability is critical under contamination conditions (dust, oil, plasma)
• The customer needs a wide sealing window (hot-tack) and reduced initiation temperature (LOW SIT)
• The application requires a combination of properties that 3 layers cannot reconcile (e.g., high gloss + thermal resistance + low SIT)
• The company’s ESG strategy assumes an increase in PCR content without losing surface properties
• The scale of production is large enough that even a 1–2% reduction in line downtime yields six-figure annual savings

Decision Framework — Total Cost, Not Film Price

A 5-layer film will usually be more expensive per kilogram. But the true calculation looks different:

Actual cost = (film price × consumption)

+ (downtime cost × frequency of sealing failures)

+ (complaint cost × defect rate)

+ (cost of lost orders × OTIF gap)

In our operational data, we see that customers who switched from 3 to 5 layers for FFS and lamination applications report a reduction in micro-downtime of 15–30%. For a continuously operating line, this is a return on investment measured in weeks, not years.

5. Recycling and ESG — Where 5 Layers Offer a Regulatory Advantage

This is a topic that most buyers don’t have on their radar yet, but it will soon impact their P&L: PPWR (Packaging and Packaging Waste Regulation).

Traditional multi-material laminates are problematic for recycling. Co-extruded mono-PE constructions — regardless of the number of layers — are recyclable within the PE stream.

Research reveals an interesting fact. In studies on five-layer co-extruded polyethylene film LLDPE/mPE/PVA/mPE/LLDPE, after four recycling cycles, longitudinal tensile strength decreased from 29.66 MPa to 21.97 MPa, and transverse from 24.9 MPa to 19.22 MPa — meaning the film retains good mechanical properties even after recycling.

This means that a well-designed 5-layer construction can:

• Meet PPWR requirements (recyclability, PCR content)
• Retain performance properties after recycling
• Allow for the introduction of 30%+ PCR in the middle layer without compromising the sealing layers

This is not “eco storytelling.” This is a real competitive advantage — especially with customers in DACH, Scandinavia, and Benelux, where large retailers are already auditing packaging suppliers for PPWR compliance.

6. What This Means in Practice — Your Line’s Perspective

Finally, let’s move away from polymers and return to what truly interests production.

3-layer film means for your line:

• A proven, stable material for most standard applications
• Good price/performance ratio where there are no bottlenecks
• A solid base that won’t surprise you positively, but also not negatively

5-layer film means for your line:

• Wider process window (greater tolerance to temperature fluctuations)
• More stable sealing even with contaminants in the sealing area
• Better hot-tack parameters — important for fast FFS lines
• Ability to package demanding products that you previously avoided
• An argument for your end-customer clients regarding ESG

Instead of a Summary

The choice between 3 and 5 layers is not a technical decision. It is a business decision — about how your company wants to compete in the next 5 years. Whether we play on unit cost or process stability and compliance.

There is no single right answer. There is only the right answer for your specific application, line, and end customer.

If you want to discuss which film construction actually makes sense for your process — with a total cost calculation, not just the price per kilogram — contact our technological team. The first conversation usually takes 30 minutes, during which we can tell you if it’s even worth exploring the topic further.

Because it’s better to quickly determine that 3 layers are perfectly sufficient than to overpay for 5 that you don’t need. And conversely — it’s better to invest in 5 layers than to lose years to line downtimes.

About the Author

Oskar Nawrocki — CEO of Kablonex, a manufacturer of PE and PP films with over 55 years of tradition. Kablonex covers the full value chain: extrusion (1–5 layers, up to 1000 kg/h), flexographic printing up to 10 colors, converting, and its own recycling plant (POD ECO). The company holds BRC, ISO, and EcoVadis certifications, supplying films to customers in Poland and Europe, with a particular focus on DACH markets. The company’s strategy combines classic production reliability with a transformation towards a circular economy — utilizing 5-layer technology and PCR recyclate as key drivers of development.

If you want to discuss how to choose the right film construction for your packaging line — write to askkablonex@kablonex.com.pl.

Scientific and Industry Sources

1. Multilayer polyolefin blown film — patent US 9,126,269 (2010) — analysis of the limits of mechanical properties of 3-layer films and the potential of 5-layer constructions
2. Stieglitz M., Hopmann C., Leuchtenberger-Engel L., Junge H. (2025) — Correlation between process conditions and mechanical film properties in foamed multilayer blown films, Journal of Plastic Film & Sheeting
3. Guleria D., Edeleva M., Vervoort S. et al. (2025) — Impact of molecular architecture and draw ratio on enhancement of targeted mechanical properties of MDO polyethylene films, Journal of Plastic Film & Sheeting
4. Borreani G., Tabacco E. (2014) — studies on EVOH/PE structures in 5–7 layer films for barrier applications (cited from ScienceDirect, Barrier Film overview)
5. Recyclable Mono-Material Polyethylene Functional Film (2024) — PMC, NIH — studies on the retention of properties of 5-layer PE film after recycling cycles
6. Adam et al. (2025) — Recycling of Multilayer Polymeric Barrier Films, Macromolecular Materials and Engineering

Artykuł Multilayer Extrusion — How 3 and 5 Layers Change Film Properties pochodzi z serwisu Kablonex.

Stretch Hood vs. Stretch Wrap — The Difference Starts in Physics

Stretch wrap is a spiral of film. The film is unwound from a roll, pre-stretched, and wound around a rotating pallet. Each layer overlaps the previous one, and stabilization is provided by the sum of tensions from several rotations. Plus: inexpensive machine. Minus: the pallet only receives tension from four sides and only in the areas where the film was stretched.

Stretch hood works differently. The tubular film (sleeve) is cut to the length of the pallet, sealed at the top, and stretched by four applicator arms to 80–100% of its original width. This stretched hood is lowered onto the pallet, the arms release, and the film elastically shrinks — on its own, without heat — generating uniform pressure from five sides: top and four sides. Plus, it tucks under the pallet base.

It’s different physics. Stretch wrap holds the load by friction between layers and the tension of the spiral. Stretch hood holds it by the elastic memory of the material — the film wants to return to its original dimension and does so throughout the entire logistics cycle. The consequences are measurable. The packaging cycle on Lachenmeier or Beumer lines takes 15–25 seconds per pallet. An automatic stretch wrapper needs one or two minutes. Film consumption is 30–50% less because instead of building a spiral with several layers, you apply one fitted layer. And the pallet is sealed on five sides — rain, dust, and UV do not penetrate as easily.

Stretch wrap is a good compromise for small volumes. Stretch hood is packaging engineering for lines that produce more than a dozen pallets per hour.

Process Anatomy — What Happens in 15 Seconds

A stretch hood cycle consists of five steps and typically takes 15–25 seconds. It’s worth breaking them down, as this explains why the film is not a commodity.

Step 1: Unwinding the film from the roll. The stretch hood sleeve is produced as a tubular film on a roll, 1300–2200 mm wide. The line unwinds a section matched to the pallet’s height. This sounds simple but requires geometric stability of the sleeve — the width must be repeatable along the entire length of the roll, as any deviation translates into uneven stretching by the four arms in step 3.

Step 2: Sealing and cutting the hood. The top edge of the cut sleeve is sealed, creating a hood closed at the top. The seal must withstand the tension force in step 3 and the elastic tension throughout the entire logistics cycle. A weak seal = a torn hood at the first transshipment.

Step 3: Stretching the hood with 4 applicator arms. This is a critical moment. Four mechanical arms enter the open bottom of the hood and stretch it to 80–100% of its original width. In this phase, the film is in an elastic state — stressed but still flexible. If the film’s formulation is poor, the hood will tear or lose its elastic memory in this phase.

Step 4: Lowering the hood onto the pallet. The stretched hood is lowered vertically, pulled over the pallet, and tucked under its base. Geometry is crucial here — the film must be longer than the pallet’s height by a constant margin (usually 100–200 mm) to effectively cover the bottom edge of the load.

Step 5: Releasing the arms. The arms release, the film elastically shrinks, and embraces the load from five sides. This is where all the magic of hold force happens — the clamping force that the film generates throughout the entire logistics cycle. And this is where the advantage of a 5-layer mLLDPE construction over a standard 3-layer one becomes apparent.

In a 5-layer film, each layer has a different task. One is designed for shrinkage force (mLLDPE, two metallocenes in the middle), another for edge tear resistance (high-purity LDPE), a third for PCR inclusion without parameter loss, and subsequent layers for slip and external surface control. In a 3-layer film, there are more compromises — because you have less room for selective design. From my experience: the difference in hold force for long export routes can be around 15–20%, with the same film thickness.

This is why stretch hood film is not an off-the-shelf product. It is a product designed for a specific application.

What Stretch Hood Film Must Physically Be Able to Do

Four parameters that a production manager should demand from a supplier. Not one, not two — all four, because each of them individually explains why a specific hood tears or holds.

High stretch without loss of hold force. The film must be able to stretch in the applicator to 80–100% of its width while retaining the ability to generate clamping force after the arms are released. These are opposing material properties. The easier you stretch, the harder it is to maintain return force. mLLDPE in the middle layer resolves this compromise better than classic LLDPE — and this is the real reason why 5-layer constructions have become standard in demanding applications.

Elastic memory. After stretching, the film must “want” to return. This parameter determines whether the pallet arrived at the recipient sealed or sagged. In cheaper formulations, elastic memory degrades within 24–48 hours after application. In a well-designed 5-layer film, it lasts for weeks. For exports to Southern Europe or Scandinavia, this is not a minor detail.

Edge tear resistance. This is where most inexpensive films fail. Pallet edges, sharp corners, wooden elements of a EUR pallet — each of these points poses a risk of initiating a tear that then propagates through the entire hood. The layered construction allows a layer with high tear resistance to be placed exactly where it is most needed.

Dimensional stability of the sleeve on the roll. This is a parameter not seen in specifications, but it determines the repeatability of the process. If the sleeve width changes by ±5 mm along the length of the roll, each such deviation translates into uneven stretching of the hood in step 3. Result: some pallets perfectly packed, some loose, some with a torn hood. Micro-downtime on the line. OEE decreases.

These are the four things that separate a commodity from an engineered film. And that’s why stretch hood is a product for fewer manufacturers than classic stretch film — because it requires a different extruder, different raw material know-how, and validation for a specific client line.

Compatibility with Packaging Lines — Lachenmeier, Beumer, MSK, Bocedi

In Europe, the stretch hood applicator market is dominated by four brands: Lachenmeier (Danish, belongs to Signode), Beumer (German, premium segment), MSK (German, strong in cement plants and chemicals), and Bocedi (Italian, popular in pallet applications in Southern Europe).

Each of them has its own applicator arm geometry, stretch speed, sealing parameters, and operating characteristics. A film that works perfectly on a Lachenmeier machine might tear on an MSK machine in step 3. A formulation that provides excellent hold force on a Beumer machine might have too low a friction coefficient on a Bocedi machine in step 4.

This is why “we’ll buy stretch hood film from the cheapest supplier in Turkey” rarely works. The film must be selected to match the parameters of the client’s specific line. In practice, it looks like this: the supplier receives the applicator’s technical data, product characteristics (pallet geometry, weight, edge sharpness, transport conditions), complaint history, and then creates a matching formulation. Then, validation is performed on a sample at the client’s site — usually 2–4 pallets under target conditions, with hold force measured over time.

At Kablonex, we do this as standard, because our 5-layer extrusion lines allow us to change the layer configuration for specific applications. This is not “magic.” It’s a different delivery model than an off-the-shelf roll from a wholesaler.

And this, in my opinion, is the biggest myth in the market — that stretch hood can be bought “off the shelf.” It can. But then you’re not utilizing the technology; you’re just paying more for film of suboptimal thickness.

When Stretch Hood Starts to Pay Off

From our experience, the threshold is 15–20 pallets per hour coming off the production line. Above this threshold, stretch hood begins to win on three dimensions simultaneously:

Less film per pallet (eliminating several spiral layers, one fitted layer). Higher packaging process efficiency (pallet secured in seconds vs. minutes on a wrapper). Higher load stability (pallet as a single unit, sealed on five sides, not a spiral on four).

Additionally, there’s reduced labor costs (less handling at the packaging line), improved OHS (eliminating manual wrapping), fewer complaints for transport damage, and better protection against weather conditions.

But stretch hood is not for everyone. The CAPEX for an applicator is 150–500 thousand EUR, depending on speed, integration, and automation. For a company packaging 50 pallets a day — it makes no sense. For a company packaging 300 pallets per shift — the payback period is measured in months, not years.

Trade-off explicit: stretch hood makes sense if you have a volume above 15–20 pallets/hour, relatively stable load geometry, and any logistical aspect that stretch wrap handles poorly (export, outdoor storage, long transport, demanding recipient).

It makes no sense if the volume is low, pallets have highly variable geometry (e.g., mixed assortment day-to-day), or the CAPEX for the applicator is prohibitive. In that case, it’s better to stick with stretch film and optimize the wrapper.

ESG, PCR, and Printing — What Stretch Hood Can Do Beyond Pallet Stabilization

This is where it gets interesting, because stretch hood is not just a way to package. It’s a path to implementing PCR and ESG without modifying the packaging line — which for many companies is the only sensible way to meet PPWR requirements.

In practice: the 5-layer construction allows up to 35% PCR (post-consumer recycled) to be placed in the middle layer of the hood, while maintaining mechanical parameters in the skin layers. The applicator doesn’t know the film contains recycled content — it works the same way. The client’s packaging line requires no changes. And the PPWR report shows a real reduction in virgin plastic.

A specific case from our portfolio. A manufacturer of crates for the German market was packaging pallets with an exceptionally thin 50 µm standard stretch hood. German retailers began requiring PCR content in transport packaging. Most market PCR formulations at this thickness lose mechanical properties. We implemented NEX-HOOD PCR 50 µm in a dedicated “PCR HQ” formulation with 35% recycled content, enhanced parameters for high-stretch applications, and maintained transparency. Validation was performed on the client’s line before the first delivery. No change in thickness, no applicator modification, with a stronger position in negotiations with retailers.

Second dimension: printing. Stretch hood can be printed directly with up to 6 colors using flexo technology. NEX-HOOD NHD offers printing from our partner print shop in 1800 mm width, with the option to combine printing with PCR dosing. What does this mean for business? The pallet ceases to be an anonymous block of film. It becomes a brand carrier in the logistics chain — visible in the warehouse, during distribution, and at the end customer. No attached labels, no banding.

A client from the fertilizer industry, a domestic producer exporting to Europe, had a problem with the red color in their logo fading on pallets after several weeks of outdoor storage at distributors. We implemented NEX-HOOD NHD 70 µm in a white opaque version, with UV-resistant inks and a UV stabilizer in the film itself. Plus, we achieved downgauging from 90 µm to 70 µm. The result: elimination of complaints for print fading, 22% less film per pallet, the pallet maintains visual brand consistency throughout the entire logistics cycle. Implementation without line modification.

These are things that stretch wrap physically cannot do. It doesn’t shrink in a way that maintains legible printing on the sides of the pallet. It doesn’t have a layered construction to accommodate 35% PCR without losing parameters. It doesn’t cover the pallet on five sides, so UV still penetrates.

Stretch hood opens up a space in this dimension that a spiral wrapper simply doesn’t have.

3-Step Checklist — Does Stretch Hood Make Sense for You?

Before you start talking to applicator or film suppliers, do three things. In order. In this sequence.

Step 1: Check your volume. How many pallets leave your line per hour on a typical production day? If the number exceeds 15–20 pallets/hour on a single line — proceed to step 2. If not — postpone the topic, optimize your wrapper. The CAPEX for a stretch hood applicator with low volume pays off in years, not months.

Step 2: Check geometry and logistics. Do your pallets have consistent or similar dimensions (tolerance ±10–15%)? Is the load going for export, stored outdoors, exposed to UV, rain, multiple transshipments? If the answer to both questions is “yes” — stretch hood will likely pay off. If pallet geometry varies widely (different assortments, different heights) or everything stays in the warehouse and travels 50 km to the recipient — stretch film remains competitive.

Step 3: Check your cost map. Calculate four numbers in a spreadsheet: film cost per pallet, labor cost for packaging, cost of complaints for transport damage from the last 12 months, energy cost of the wrapper. Sum them up. Compare with the hypothetical cost of stretch hood (film + applicator CAPEX amortization + energy + labor). If the difference favors stretch hood by more than 15% — you have a business case to build a presentation for management. If the difference is below 5% — stick with stretch film and revisit this in 2 years when applicator CAPEX drops or volume increases.

Three steps. A week of analyst work. A decision for years.

Does your wrapper consume labor, energy, and 4× more film than stretch hood? Are transport damage complaints ruining your export profitability? Do German networks require PCR, and you don’t know how to implement it without replacing your line?

We offer stretch hood films that work on each of the four dominant lines in Europe (Lachenmeier, Beumer, MSK, Bocedi), in variants from 50 to 150 µm, with up to 35% PCR and printing up to 6 colors. The 5-layer construction with mLLDPE allows selective property design — it’s not an off-the-shelf commodity. 55 years of experience, BRC, ISCC PLUS, EcoVadis.

Expect: 30–60% less film per pallet, shorter packaging cycle, fewer damage complaints, a ready PPWR/ESG path without CAPEX for a new line.

Send us your specifications. We respond the same business day — a technologist will contact you and provide a TCO calculation for your volume.

Artykuł How Stretch Hood Film Works: A Technical Guide for Production and Purchasing Managers pochodzi z serwisu Kablonex.

NEX-BAG FFS – Packaging Process Stability

Our FFS (Form-Fill-Seal) film is designed for the following applications:

• pellets
• coal
• technical granulate

3-Layer Coex Structure – Function Control

We produce film with a 3-layer structure (5-layer option available for higher requirements):

• Inner layer – optimized for fast and tight sealing (stable hot-tack, low temperature initiation)
• Core layer – responsible for load-bearing capacity and stretch control
• Outer layer – puncture resistance, COF control, resistance to friction between bags

Result:

• fewer sleeve breakages
• fewer complaints due to broken bags
• stable machine cycle at maximum speed

Controlled Coefficient of Friction (COF)

In pellets, the balance is crucial:

• too low COF → pallets “shift” during transport
• too high COF → problems at the forming collar and increased resistance

We select slip/antiblock additives based on:

• specific FFS machine type
• palletization method
• storage conditions

This is not a parameter “from a table”. It is a process parameter.

Flexo CI Printing – Readability and Durability in Harsh Conditions

We offer up to 10-color printing using CI (Central Impression) technology.

In practice, for pellets, this means:

• stable registration even with thick films (80–150 μm)
• readable EAN codes even when dusty
• pigment resistance to UV and semi-open storage

Cooperation Proposal

Instead of sending a general quote:

• we will prepare a test roll based on your parameters (COF, micronage, structure)
• you will test it at maximum line speed
• we will compare: efficiency, number of breakages, pallet stability

This provides hard data – not just declarations.

This provides hard data – not just declarations.

• cracking seals
• unstable pallets
• downtime resulting from film performance
• the need to implement PCR without losing parameters

we propose a quick technical call with a production technologist.

Artykuł Film Packaging for Pellets pochodzi z serwisu Kablonex.