Digital, Flexo or Rotogravure? Choosing a Print Method for Your Pouches

Once you have settled on a material and a size, the print method is the next big decision for a printed pouch. It shapes your unit cost, the total budget of your first order, the lead time and what your artwork can do. Flexible packaging uses three main methods: digital, flexo and rotogravure. None of them is best in every case. The right one depends on how many pouches you need, how many designs you have and what you expect from the result.

The three methods in brief

Digital printing sends the artwork straight from the file to the film. There are no plates or cylinders, and the press can print a different image on every pass, which makes it the most flexible option for short runs and many designs.

Flexo printing uses a flexible relief printing plate for each colour. Making the plates adds setup cost and time, but once they exist the press runs fast and cheaply. It is a common choice for medium and large runs.

Rotogravure prints from engraved metal cylinders, with one gravure cylinder per colour. It has the highest setup cost of the three, and in return gives the lowest unit cost on very large runs and the most consistent colour.

Choosing by quantity

Quantity comes first, because setup cost is spread across every pouch you order. On a small run the plates or cylinders push the unit price up; on a large run they barely register, and the speed and efficiency of the press take over.

To give a concrete reference, the starting values in our own catalogue are 500 pouches for digital, 10,000 for flexo and 30,000 for rotogravure, with lead times growing roughly in the same order. These limits are reviewed from time to time, so check the current minimums and lead times in the price calculator.

Number of designs: the cost people forget

If you sell several variants, such as different origins, flavours or pack weights, the sums change. With flexo and rotogravure, every design needs its own set of plates or cylinders. Five flavours means five sets, and the minimum run usually applies to each design separately.

With digital, one total quantity can be split across several designs. That is a real advantage for brands testing a new range, running seasonal editions or launching limited releases. The number of designs entry explains this in more detail.

A useful trick is to build all variants on a shared base design and tell them apart with a small label panel or a single colour change. When you later move to plate or cylinder printing, far fewer of them have to change between variants.

Colour quality and consistency

All three methods produce excellent work today, but each has its strengths:

• Digital handles photographs, gradients and fine detail very well, and proofs are easy because there is no setup. Some special colours and very large solid areas can differ slightly from the other methods.
• Flexo is strong on solid backgrounds, logos and spot colours such as Pantone shades. Very fine text and soft gradients need artwork prepared with the process in mind.
• Rotogravure gives the best colour consistency over long runs, with the smallest difference between the first pouch and the last. It is also a favourite for metallic effects and rich, dense colour.

The substrate matters too. On metallised and clear films a white layer is usually printed under the design so colours stay vivid, while on kraft paper colours look warmer and flatter. Not every material can be printed by every method either; the calculator shows which methods are available for the structure you pick.

When to switch methods

Most brands start with digital and move to flexo or rotogravure as they grow. These are the signs that it is time:

• Your design has settled. If you no longer change the artwork often, plates or cylinders will earn their keep over many orders.
• Volumes are steady and rising. When a single design regularly clears the flexo minimum with room to spare, the lower unit cost pays back the setup quickly.
• You have moved to an automatic line. High-speed packing machines usually run rollstock film, and rollstock orders are large by nature, which makes flexo or rotogravure the natural fit.
• Colour consistency has become critical. If hundreds of your pouches sit side by side in a national chain and must match, rotogravure has the edge.

The reverse is also true. With many variants and modest volumes of each, staying digital can be cheaper even when the total is large. Look at quantity per design, not the overall total.

Artwork tips

• Start from the right template. Fix the pouch size before you design, and use the template you are given. Seal areas, the zip line and the gusset zone are all marked on it.
• Keep key content in the safe area. Logos, product names and legal text belong well away from seals and folds.
• Define colours properly. CMYK is fine for digital; for flexo and rotogravure, give Pantone references for your brand colours.
• Prepare the white separately. On clear or metallised film, show on its own layer where white is printed and where the film should show through.
• Use vectors and enough resolution. Text and logos should be vector; photos need adequate resolution at print size.
• Check the barcode. Place it dark on a light background, at the recommended size, and keep it clear of the seals.

Still weighing the options? Send us your quantity, number of designs and target date through the contact page and we will compare the methods with you.