Start with the product, not the pouch
The product decides the pack. Coffee needs an oil and oxygen barrier plus a one-way degassing valve so roasted beans can release carbon dioxide without letting oxygen in. Snacks need moisture and grease resistance. Pet food needs strength and a good seal against fat migration. Tea needs aroma retention and light protection. Write down what the fill is sensitive to before you look at structures or print methods.
Then match the structure. PET/AL/PE gives a strong oxygen and light barrier, which suits coffee and long-shelf-life dry goods. PET/NY/PE adds puncture and flex resistance for frozen or vacuum applications. Kraft paper laminates give a natural look with moderate barrier. Mono-material PE and PP recyclable structures and PLA/PBS compostable options cover brands working to specific sustainability rules.
Barrier is a number, not a feeling
Ask for the oxygen transmission rate and water vapour transmission rate of the proposed laminate, in cc/m2/day and g/m2/day. These figures tell you whether the pack will hold up over the stated shelf life. Aluminium foil layers give the lowest transmission. Metallised PET or a coated film gives a middle option at lower cost. For many dry snacks, a two-layer structure is enough.
Shelf life also depends on headspace, residual oxygen and seal quality, not the film alone. If a brand needs twelve months, say so at the start. The factory can then propose a structure and a target thickness rather than guessing. Thicker does not always mean better barrier; the right layer does the work.
Filling method sets the format
Vertical form fill seal machines run rollstock film and form the pouch in line. Pre-made pouches suit lower volumes or products that need a shaped bag, a spout or a heavy fill. Flat bottom pouches stand on the shelf and hold more weight. Stand up pouches are the common choice for coffee, snacks and pet treats. Spout pouches, including corner spout and STANDCAP, work for liquids, purees and sauces.
Check the fill temperature and the seal window. Hot fill, cold fill and aseptic lines all stress the seal differently. Tell the converter the filling equipment, the fill weight and the speed. A pouch that runs well at 40 packs per minute on one machine may jam on another. Free stock pouch samples let you test the format on your own line before committing to a print run.
What drives the price
Four things move the unit price: structure, print method, order quantity and add-ons. A three-layer foil laminate costs more than a two-layer PE structure. Rotogravure printing, up to 10 colours, has a plate cost and suits runs from 10,000 pcs or 200 kg. Digital printing has no plate cost and starts from 100 pcs for pouches or 10 kg for film, so it fits launches and short runs. Flexographic sits between the two for certain jobs.
Add-ons add cost and lead time. A one-way degassing valve, zipper, tear notch, window, spout and cap, carry handle or hang hole each need a separate operation. Keep the first version simple, then add features once the pack is proven. Lead time runs 10-15 working days for digital after artwork approval and 20-25 working days for rotogravure.
Recyclability rules are tightening
Several markets now charge fees or set targets based on pack recyclability. Mono-material PE and PP structures are easier to recycle than mixed laminates because they do not need layer separation. PLA/PBS compostable films suit industrial composting streams where collection exists. Degradable options exist, but check the local definition and the disposal route before you print a claim on the pack.
Certifications belong to the manufacturing partner, not to the supplier. Ask which BRC-certified factory will run your job and request the current certificate. Keep the artwork claims aligned with what the structure can actually do. A recyclable logo on a mixed laminate is a compliance risk, not a marketing win.
Common mistakes to avoid
Most problems trace back to a few habits. Buyers send low-resolution artwork, change the structure late, or forget that the seal area cannot carry print. Others order the minimum quantity without testing the fill on their own machine. A short list of things to check before you approve: - Artwork at the right resolution with bleed and seal zones marked - Structure confirmed against the real shelf life target - Fill weight, temperature and line speed shared with the converter - Add-ons listed separately so their cost and lead time are clear - Certification documents requested from the factory - A sample run on your filling line before the full order
Fixing these points early costs little. Fixing them after the print run means new plates, new film and a missed launch date. Share the requirements in writing, get the offer back with unit price, MOQ, lead time and shipping terms, then approve the artwork.