Flexible Packaging FAQ

Flexible packaging refers to packaging made from pliable materials such as films, foils, and laminates. Unlike rigid containers (cans, glass jars, hard plastic tubs), flexible packaging can be folded, rolled, or compressed. Common formats include pouches, bags, wraps, and rollstock. It is used across food, beverage, personal care, medical, and industrial applications.

The most common formats include:

• Stand-up pouches (SUPs) ... pouches with a bottom gusset for shelf stability
• Flat pouches ... simple two-side-sealed bags
• Retort pouches ... designed for high-temperature sterilization
• Spouted pouches ... for liquid products
• Zipper pouches ... resealable consumer packaging
• Rollstock ... film wound in rolls for form-fill-seal machines
• Wraps and flow wraps ... for single-serve and bar products

Flexible packaging is usually made from multiple layers of polymer films and sometimes foil. Common materials include:

• PET (polyethylene terephthalate) ... outer structural layer, clarity, stiffness
• PE (polyethylene) ... sealant layers, film structures
• BOPP (biaxially oriented polypropylene) ... print substrate, clarity
• Nylon (PA) ... puncture resistance, oxygen barrier
• EVOH ... oxygen barrier layer within coextruded structures
• Aluminum foil ... ultimate barrier for light, oxygen, moisture
• Metallized film ... lower-cost alternative to foil barrier

Flexible packaging goes through several production stages:

1. Film extrusion ... raw resin pellets are melted and extruded into film
2. Printing ... graphics are applied using flexographic or gravure presses
3. Lamination or coextrusion ... layers are combined for barrier and strength
4. Slitting ... wide master rolls are cut to working widths
5. Converting ... film is formed into finished pouches, bags, or wraps

Not every product goes through all stages. Rollstock customers receive film rolls and do their own form-fill-seal. Pouch customers receive finished pouches ready to fill.

Costs vary widely depending on material structure, print complexity, format, and volume. General ranges:

• Simple LDPE bags (no print): very low per unit at high volume
• Printed stand-up pouches: moderate per unit, depending on size and layers
• Retort or high-barrier structures: higher per unit due to material cost

Flexible packaging is almost always quoted by the unit at a given minimum order quantity (MOQ). Volume drives cost significantly. Setup charges for plates and cylinders are separate from per-unit costs. See our cost guide for details.

MOQ is the smallest production run a manufacturer will accept. In flexible packaging, MOQs exist because equipment setup costs (changeovers, plate prep, material waste at start-up) must be spread across enough units to be economical.

MOQs typically range from a few thousand units for simpler pouches from specialty converters, to 50,000 to 500,000 units for full-run flexo-printed structures from large manufacturers. MOQs are negotiable based on structure, format, and relationship. Learn more about MOQs.

A co-packer (contract packager) is a facility that fills and seals your product into your packaging on your behalf. If you don't own a packaging line, a co-packer runs the fill-and-seal step for you.

You need a co-packer if:

• You are launching a new product without production infrastructure
• Your volumes don't justify owning a line
• You want to test a new format before investing in equipment
• You need specialized equipment (retort, aseptic, etc.)

See our full guide on co-packing.

Most suppliers need the following to provide a quote:

• Pouch or format dimensions (width, height, gusset depth)
• Material structure or performance requirements (barrier, clarity, retort)
• Number of print colors and artwork complexity
• Estimated annual volume and order frequency
• Zipper, spout, or other special features
• Lead time requirements

You don't need finished artwork to start the conversation, but you should have a general idea of your format and volumes. See the full spec guide.

It depends on the material structure. Most multi-layer flexible packaging is not yet widely recyclable through curbside programs because the mixed materials can't be easily separated. However:

• Mono-material polyethylene pouches (all-PE) can be recycled at store drop-off locations in many markets
• Some polypropylene structures qualify for PP recycling streams
• Compostable flexible packaging exists but requires industrial composting conditions

Design-for-recyclability is a major industry focus, with brands and suppliers moving toward mono-material and simplified structures. See our sustainability resource.

Key factors when evaluating a flexible packaging manufacturer:

• Capabilities match ... do they run your specific format and material structure?
• MOQ alignment ... can they work at your volume level?
• Print capabilities ... do they have in-house printing or use a converter network?
• Quality certifications ... SQF, BRC, ISO, FDA compliance as needed
• Lead times ... do they match your launch timeline?
• References ... can they provide customers in your category?

The best approach is to run a structured RFQ with 3 to 5 suppliers, evaluate samples, and visit shortlisted facilities before placing an initial order. See our full buyer guide.