Custom Roll Stock Pouches

Roll orientation determines whether the printed film enters the packaging machine correctly. Even accurate artwork and a suitable laminate cannot prevent production problems if the reel unwinds in the wrong direction.

Custom Roll Stock Pouches are supplied as continuous flexible film wound onto reels. The film feeds into compatible packaging equipment, which forms the package, fills it with the product, seals it and separates the finished units.

Unlike pre-made pouches, roll stock reaches the packing facility before the individual packages have been formed.

This makes the filling machine a central part of the packaging specification.

Vertical form-fill-seal (VFFS), horizontal form-fill-seal (HFFS), sachet and flow-wrapping equipment can require different film dimensions, orientations and sealing characteristics.

The film must suit the actual equipment rather than a general description of the finished bag.

Printed Face Orientation

The printed surface and internal sealing layer must be positioned correctly as the film travels through the machine.

The required orientation depends on the selected laminate, forming arrangement and equipment.

Some machines need the printed impressions to unwind in a particular direction so the graphics reach the forming and cutting stations correctly.

Reversing the reel can place the artwork in the wrong position or cause the laminate to enter the equipment incorrectly.

The machine's approved film specification should establish the correct unwind arrangement.

Winding Direction

Winding direction describes how the printed impressions are oriented as the film leaves the reel.

It is not simply a preference for which way the roll turns.

The correct configuration depends on the machine's film path and how the finished package is formed.

Before production, establish the required unwind direction using the filling equipment's specification or an approved sample from the co-packer.

A photograph of an existing correctly wound reel may help identify the intended arrangement.

However, a photograph should supplement the technical specification rather than replace it.

Roll stock printing is affected by film consumption, print repeat, artwork versions and the selected production process.

The number of finished packages matters, but it is not the only quantity that affects the commercial decision.

A production order may be specified in linear feet, linear meters, film area or weight, depending on the supplier and material.

The corresponding number of finished units depends on the reel width, repeat, production setup and waste allowances.

Quantity per Artwork

A single printed design running continuously creates a different production requirement from several product variations.

Each version may need its own approved artwork and identification.

Digital printing may be appropriate for certain lower-volume or frequently changing designs.

Flexographic printing may suit suitable film substrates and recurring programs where conventional setup is justified.

The decision between digital and flexographic printing depends on the actual material, artwork count and production requirements.

The printing process should be established for the selected roll stock rather than copied from an unrelated paperboard packaging specification.

Waste at Changeover

Every reel change or artwork change can introduce material and operational requirements.

The filling facility may need film for threading, registration, setup and process adjustment.

This means the purchased film quantity and the expected saleable package count are not necessarily identical.

The correct allowance depends on the equipment and production process.

For recurring programs, the actual consumption per accepted finished unit is more useful than calculating economics from nominal reel length alone.

Variable Product Versions

Several flavors, formulations or product counts may share the same machine and film construction.

That does not automatically mean the artwork should be combined into one undifferentiated production order.

The reel identification and approved artwork must correspond to the intended product.

Where artwork changes frequently, the print method and order quantities should be assessed against the actual demand for each version.

For a stable high-volume program, conventional printing may be commercially appropriate.

The most suitable production route depends on the specific order rather than a universal quantity threshold.