Pillow Pouch

The pillow pouch is one of the most widely used flexible packaging formats in the food industry. Named for its characteristic pillow-like shape when filled, it is formed from a single continuous roll of flat film on a vertical form-fill-seal (VFFS) machine — folded, back-sealed along its length and cross-sealed at the top and bottom to create a simple, cost-effective package that works reliably at high production speeds across a huge range of product categories.

It is not a glamorous format, but it is an enormously practical one. For products where efficient high-speed filling, strong barrier performance and competitive packaging cost are the priorities — snacks, biscuits, confectionery, dry foods, spices, coffee sachets and similar categories — the pillow pouch delivers exactly what is needed without unnecessary complexity or cost.

At NytronPackaging, we produce pillow pouch film in a wide range of laminated structures, print specifications and seal configurations, all produced to the dimensional tolerances and film properties required for reliable performance on your filling and sealing line.

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How a Pillow Pouch Is Made

Pillow pouches are formed, filled and sealed in a single continuous operation on a vertical form-fill-seal machine. The film unwinds from a roll, is pulled over a forming tube that gives the package its shape, and is sealed along the back edge to form a tube. Product is dropped or pumped through the forming tube into the package, and the top and bottom seals are made simultaneously — the bottom seal of the pouch being filled closes at the same time as the top seal of the previous pouch. The sealed pouches are then cut apart and discharged from the machine.

The speed of this process — tens of packages per minute on a standard machine, hundreds on a high-speed line — is one of the reasons the pillow pouch remains dominant for high-volume food applications. The simplicity of the format also means fewer points of failure compared to more complex pouch types, and less downtime for machine setup and changeover.

Film Structures for Pillow Pouches

The performance of a pillow pouch is determined almost entirely by the film structure it is made from. Because the pouch itself is a simple format, the engineering goes into the film — the choice of barrier layers, the sealant specification, the structural films and the print substrate.

For moisture-sensitive dry foods — biscuits, crackers, snack foods, cereals, noodles — a BOPP/CPP structure provides good moisture barrier, reliable heat seal performance and an excellent print surface at a competitive cost. For products with higher oxygen sensitivity — coffee, nuts, crisps, dried meat snacks — a structure incorporating a metallised film or EVOH barrier layer is specified to extend shelf life by reducing oxygen ingress to an acceptable level.

For frozen food applications, the film structure must remain flexible, tough and heat-sealable at temperatures well below zero — standard BOPP/CPP is not appropriate here, and we specify freezer-grade structures using PE-based sealants that retain their properties through the freeze-thaw cycle. For products requiring very high barrier performance — pharmaceutical sachets, high-value food ingredients, instant coffee — a foil-containing structure provides the near-complete barrier to oxygen, moisture and light that these products demand.

Back Seal Options

The back seal is the longitudinal seal that runs the length of the pillow pouch and closes the tube of film before filling. There are two main back seal configurations, and the right choice depends on the film structure, the filling machine and the desired appearance of the finished package.

A fin seal — where both edges of the film are brought together face-to-face and sealed on the inside surface — produces a flat, upstanding seal on the back of the package. It requires the inner sealant surface of the film to be sealed to itself, which means the sealant must be compatible with itself at the sealing temperature and dwell time of the machine. Fin seals are the standard configuration for most food pillow pouches.

A lap seal — where one edge of the film overlaps the other and the inside surface of one edge is sealed to the outside surface of the other — produces a flat, flush seal that sits neatly against the back of the package. Lap seals require the outer surface of the film to be sealable, which affects the film specification, and they are used in specific applications where the appearance of the back seal is important or where the fin seal configuration is not compatible with the filling machine being used.

Print and Branding

Because the pillow pouch is formed from a single flat web of film, the entire surface of the film — front, back, top and bottom panels — is available for print. This gives brands a full wrap-around canvas for product information, imagery, branding and regulatory labelling. We print pillow pouch film using both rotogravure and flexographic processes depending on the complexity of the artwork, the volume of the order and the quality requirements of the application.

Rotogravure printing is specified for high-volume runs with complex, photographic-quality artwork where absolute colour consistency across long runs is critical. Flexographic printing is specified for medium-volume runs with simpler designs or where faster turnaround and lower setup cost are the priority. In both cases, we carry out a full pre-press check and colour proof approval before production begins.

Sizing and Format Options

We produce pillow pouch film across a wide range of widths and lengths to suit pack sizes from small single-serve sachets through to large multi-serve packs. The roll width determines the pouch width, and the seal pitch on the filling machine determines the pouch length — both parameters are agreed with the customer at the specification stage and set to work correctly on the customer’s existing filling equipment.

We can also incorporate features into pillow pouch film that extend functionality beyond the basic format. Euro holes — punched openings in the top seal area — allow the pouch to be hung on retail display hooks. Tear notches cut into the side seals make the pouch easier to open. Easy-peel seal configurations allow the pouch to be opened cleanly without scissors. Each of these features is specified at the film or conversion stage and incorporated before the roll is despatched.

Sustainability

The most widely used pillow pouch film structures — BOPP/CPP for dry food applications and BOPP/PE for a range of other categories — are produced from polypropylene-family and polyolefin-family materials respectively. All-PP structures are compatible with polypropylene flexible film recycling where collection infrastructure exists, and all-PE structures are compatible with polyethylene film recycling streams.

We offer mono-material pillow pouch film structures for brands working toward recyclable packaging commitments, and we can advise on the performance trade-offs — particularly around barrier performance and sealability on the filling line — for specific product and market combinations. We also offer pillow pouch film incorporating post-consumer recycled content where the application permits.

Working With Us

If you are specifying pillow pouch film for a new product, reviewing the film structure and specification for an existing product, or looking to switch suppliers and want to understand what NytronPackaging can offer, we are straightforward to work with. Tell us your product, your pack size, your filling machine make and model if known, your volume and your shelf life target — and we will come back to you with a recommended structure and a quotation.