Start with the product formula
Before choosing a pouch or film, list what the product contains. Essential oils, fragrance, alcohol, and acidic ingredients can attack seals or migrate through some plastics. Silicone-based products may need a different seal layer than water-based lotions. Note the pH range and whether the formula contains solvents. This determines which sealant and barrier layers will work. A structure that performs well for a dry powder may fail for a liquid with high essential oil content.
Also consider the fill temperature. Hot-fill products require materials that tolerate heat without delamination. Cold-fill or room-temperature filling gives more options. If the product is oxygen-sensitive, plan for an oxygen barrier. If it is light-sensitive, opacify the structure. These decisions come before artwork or pouch style, because they narrow the material set.
Match barrier to shelf life
Barrier requirements follow the product's sensitivity and the target shelf life. For many cosmetics, moisture and oxygen are the main threats. PET/AL/PE provides an excellent barrier against both, but it is not recyclable in most streams. PET/NY/PE offers good oxygen and puncture resistance without foil, though moisture barrier is lower. For products that need only moderate protection, mono-material PE or PP structures can work and are easier to recycle where facilities exist.
If the brand wants compostable packaging, PLA/PBS laminates are available. They suit dry or low-moisture products and shorter shelf lives. Always test the actual product in the candidate structure. Accelerated shelf-life testing at elevated temperature and humidity gives data on seal integrity, delamination, and product quality. Do not rely on material data sheets alone.
Choose the pouch format for filling
The pouch style affects how the product is filled and how the consumer uses it. Stand-up pouches work well for liquids and gels that need to stand on a shelf. Flat-bottom pouches offer a premium look and good shelf presence. Three-side-seal pouches suit small sachets and samples. Spout pouches, including corner spout and STANDCAP, are common for lotions, gels, and liquid soaps. Side gusset bags handle larger volumes, such as refill packs.
Consider the filling line. Pre-made pouches require a fill-seal machine that opens the pouch, fills, and seals. Rollstock film runs on form-fill-seal equipment and often gives lower unit cost at higher volumes. Spouted pouches need a fitment inserter or pre-made spouts. If the product is viscous, a wider spout or a larger fill opening helps. For powders, avoid narrow spouts that bridge.
Understand what drives cost
Several factors set the unit price. Print method is a major one. Digital printing has low setup and suits short runs, with MOQ from 100 pouches or 10 kg of film. Rotogravure printing has higher setup but lower per-unit cost at scale, with MOQ from 10,000 pouches or 200 kg of film. The number of colours, the substrate combination, and the add-ons also matter. A one-way degassing valve, zipper, spout and cap, or carry handle each add material and process steps.
Structure complexity affects cost. A three-layer laminate with foil and a high-barrier sealant costs more than a two-layer clear structure. Special shaped bags require custom tooling. Lead time also differs: digital print runs typically ship 10–15 working days after artwork approval, while rotogravure runs take 20–25 working days. Order quantity, repeat orders, and shipping terms all influence the final landed cost.
Follow sustainability rules without greenwashing
Sustainability claims must be specific and verifiable. "Recyclable" means the package is accepted in existing recycling streams where the consumer lives. Mono-material PE or PP pouches are designed for recycling, but acceptance varies by region. "Compostable" means the material meets a standard such as EN 13432 or ASTM D6400 and will break down in industrial composting. PLA/PBS laminates can be compostable, but they need the right conditions.
Avoid vague terms like "eco-friendly" unless you can back them up. If you use recycled content, state the percentage and the source. If the package is designed for refill, explain how. Brands should check local labelling rules. In the EU, the Packaging and Packaging Waste Regulation sets requirements for recyclability and recycled content. Similar rules exist in other markets. The packaging supplier can provide material certificates, but the brand owns the claim.
Avoid common specification mistakes
Many problems trace back to incomplete briefs. Common mistakes include: - Specifying a pouch without stating the fill weight and product density. - Forgetting to mention the filling method (hand-fill, semi-auto, or fully automatic). - Choosing a recyclable structure that cannot hold the product for the required shelf life. - Ignoring the need for a degassing valve on products that release gas. - Assuming all zippers are resealable to the same standard. - Not testing the actual product in the candidate package.
Other issues come from artwork and sealing. Artwork that crosses a seal area can weaken the seal. Matte finishes can scuff during shipping. A tear notch placed in the wrong spot can make opening difficult. Always request a physical sample or a stock pouch sample before committing to a print run. Stock samples are free; the customer pays courier only. Test filling, sealing, opening, and shipping before final approval.