| 1 | Confirm the food-contact grade | Request a current declaration of compliance and confirm that the paperboard is intended for direct or indirect food contact. | Documentation should identify the material, intended food type, contact conditions, and applicable legal requirements in the destination market. | Bakery cartons, dry-food boxes, takeaway packs, and food-service sleeves. |
| 2 | Match the grammage to the package | Compare basis weight, stiffness, thickness, and load requirements rather than selecting by grammage alone. | Food cartons commonly use paperboard in approximately the 200–500 g/m² range, although the correct value depends on size, filling weight, and structure. | Small folding cartons, larger meal boxes, confectionery packaging, and display packs. |
| 3 | Evaluate moisture and grease resistance | Check whether the board has a suitable barrier coating, dispersion coating, wax treatment, or compatible inner liner. | Water-based foods, oily foods, chilled products, and hot foods require different barrier performance; ask for migration and barrier test results where relevant. | Grease-resistant food trays, bakery boxes, frozen-food sleeves, and takeaway containers. |
| 4 | Check the coating and printing side | Confirm whether the coating is on one side or both sides and ensure inks, varnishes, and adhesives are suitable for the intended packaging structure. | A printed outer surface with an unprinted food-contact inner surface is common, but the final construction must be assessed as a complete package. | Printed cartons, menu-style sleeves, branded-free retail packs, and paperboard food trays. |
| 5 | Measure stiffness and foldability | Review bending stiffness, scoring quality, crease performance, and resistance to cracking during die-cutting and folding. | Higher stiffness supports stacking and shape retention, while excessive stiffness can make folding and automatic packing more difficult. | Folding cartons, hinged lids, cup carriers, and die-cut food-service packaging. |
| 6 | Assess sizing and tolerance control | Specify sheet or roll dimensions, thickness tolerance, squareness, moisture condition, and cutting accuracy. | Consistent dimensions reduce misfeeds, poor folds, open seams, and waste during converting or filling. | High-volume carton production, automatic packing lines, and precision die-cutting. |
| 7 | Verify odor and taste neutrality | Ask for sensory evaluation, odor testing, and information about recycled content, coatings, adhesives, and storage conditions. | Packaging should not transfer an objectionable odor or flavor to the food under the specified contact conditions. | Aromatic foods, confectionery, bakery items, dry groceries, and ready-to-eat products. |
| 8 | Review sustainability information | Check fiber source, recycled content, recyclability, coating composition, and whether supporting chain-of-custody documents are available. | Recyclability depends on the complete pack, including barriers, laminates, inks, adhesives, and local collection and recycling systems. | Dry-food cartons, bakery packaging, paper sleeves, and lightweight secondary packaging. |
| 9 | Plan global logistics and storage | Compare pallet configuration, moisture protection, container utilization, lead time, minimum order quantity, and storage requirements. | Paperboard should be kept dry, wrapped, and protected from sudden temperature or humidity changes to reduce curling and dimensional variation. | Imported sheet stock, export cartons, regional converting, and long-distance supply chains. |
| 10 | Approve samples before ordering | Test the actual food, filling temperature, contact time, sealing method, stacking load, printing, folding, and transport conditions. | A laboratory report for the paperboard alone does not replace validation of the finished package under real or simulated use conditions. | New product launches, export packaging, refrigerated foods, hot food service, and customized carton designs. |