Choosing the right paperboard is an important part of custom packaging planning. The material is selected according to the weight, size, protection level, printing needs, finish, and sustainability goals of the product. Different paperboard grades are suited to different packaging structures, from folding cartons and sleeves to food-grade packaging. Thickness, fibre type, coating, die-cutting, and structural design also need careful consideration before production. For Canadian markets, labelling and food-packaging requirements should also be reviewed before the final material is approved. With the right paperboard selection, the presentation of the product, protection, shelf appeal, and overall packaging performance are better aligned with the needs of the brand.

Understanding Paperboard Types For Packaging

Paperboard is a thick paper-based material used for cartons, sleeves, boxes, and retail packaging. Virgin fibre paperboard offers a clean surface and consistent strength, while recycled content is suited to sustainable packaging needs. Kraft paperboard has a natural brown look, and coated paperboard has a smooth surface for detailed artwork and colour reproduction. FBB (Folding Boxboard) is suited to folding cartons where stiffness and good folding performance are important.

Key Factors In Paperboard Selection

Paperboard selection should be based on the actual needs of the packaging rather than appearance alone. Weight, dimensions, storage conditions, transportation, printing, and finishing should all be considered before production.

• Weight of the product: Paperboard stiffness should match the weight of the product.
• Packaging structure: The paperboard should suit the size and structure of the package.
• Printing surface: A smooth surface is suited to detailed artwork and colour reproduction.
• Shelf appeal: Colour, artwork, finish, and shape should remain visually balanced.
• Handling conditions: Storage, stacking, transport, and humidity should be considered.

For food applications, food-grade packaging should be selected with suitable compliance documentation. Where direct or indirect food contact is involved, the suitability of coatings, inks, adhesives, and other components should be reviewed according to the intended application.

Thickness And Durability Considerations Explained

Paperboard thickness is measured through GSM, which means grams per square metre. A higher GSM usually indicates a heavier sheet, while strength is also affected by fibre composition, coating, construction, and stiffness. Lightweight paperboard is suited to smaller cartons, sleeves, and inserts, while heavier grades are suited to products that need more stiffness and protection. Strength, durability, moisture resistance, die-cutting, and structural design should be considered when selecting the grade. A suitable thickness keeps the package stable without adding unnecessary weight or cost.

Eco-Friendly Paperboard Options For Brands

Sustainability is an important part of custom packaging. Recycled paperboard, recycled content, responsible fibre sourcing, recyclability, paper recycling, and repulpability are considered for eco-friendly packaging. FSC Certification is also relevant for responsible forest sourcing and chain-of-custody requirements. Coatings, laminations, windows, and adhesives should also be reviewed because they may affect the recycling process. The selected paperboard should match the requirements of the product, sustainability goals, and market expectations.

Common Mistakes When Designing Custom Packaging Sleeves

Custom packaging sleeves are suitable for retail, gift, and secondary packaging, but several mistakes should be avoided. Incorrect thickness may lead to bending or tearing, while excessive thickness may increase weight and cost. Poor measurements and unsuitable die-cutting may cause fitting problems. The coating should match moisture, grease, handling, and printing requirements. Clear information, suitable shelf appeal, and appropriate finishing should also be maintained for a balanced presentation. Learn More 

Packaging Regulations And Certifications Guide Canadian

Canadian packaging requirements depend on the product and market. C.R.C., c. 417 covers consumer packaging and labelling requirements, while SOR/2018-108 covers important food packaging requirements. FSC Certification supports responsible forest sourcing, with licence numbers in the FSC-C format. BRCGS Packaging Materials Issue 7 covers packaging quality, legal compliance, authenticity, and product safety. Compliance should be checked according to the product type and packaging application.

Choosing The Right Paperboard Supplier

The supplier is an important part of the paperboard selection process because material quality, documentation, production consistency, and technical support all affect the final packaging result.

• Material documentation: Grade, GSM, fibre, coating, recycled content, and food-contact details should be documented.
• Sample approval: Samples should be checked for folding, colour, printing, die-cutting, stiffness, and finishing.
• Printing quality: Screen and UV printing should match the approved artwork and finish.
• Production consistency: GSM, thickness, colour, cutting, folding, and finishing should remain consistent.
• Compliance records: Food-grade, FSC, and BRCGS documentation should be checked where required.

A reliable supplier relationship is built through clear specifications, physical sampling, documented approvals, quality checks, and consistent communication. The final paperboard grade should match the packaging requirements rather than being selected only according to price.

“Good things come in small packages.” — Aesop

Conclusion

The right paperboard is selected by considering strength, thickness, appearance, printing, sustainability, structure, and cost. Virgin fibre, recycled paperboard, kraft paperboard, coated grades, and FBB are suited to different packaging requirements. Universal Packaging is also worth considering for custom packaging needs in Canada. Food-grade packaging requires attention to material suitability and Canadian regulations. FSC certification and BRCGS Issue 7 may also be relevant for specific projects. Before production, samples, GSM, die-cutting, coatings, printing, structural design, and compliance documents should be reviewed. Careful material planning supports consistent quality, suitable protection, and a professional presentation of the product. 

FAQs

What paperboard is best for custom packaging?

The best paperboard depends on the weight, size, structure, printing requirements, and protection level of the product. SBS, FBB, kraft paperboard, and recycled paperboard are selected for different applications.

What does GSM mean in paperboard packaging?

GSM means grams per square metre and describes the weight of the paperboard sheet. A higher GSM often indicates a heavier sheet, but fibre type, structure, and stiffness should also be reviewed.

Is recycled paperboard suitable for custom packaging?

Yes, recycled paperboard is suitable for many packaging applications where the required strength, printing surface, and structural performance are met. Recycled content and recyclability should be checked according to the final packaging structure.

What Canadian regulations apply to food packaging?

The Safe Food for Canadians Regulations, identified as SOR/2018-108, contain requirements relevant to certain food packaging and labelling activities. The Consumer Packaging and Labelling Regulations, C.R.C., c. 417, also contain important requirements for consumer packaging and labelling.

What certifications are relevant to paperboard packaging?

FSC certification is relevant to responsible forest sourcing and chain-of-custody claims, while BRCGS Global Standard Packaging Materials Issue 7 is relevant to quality, safety, legal compliance, and certification requirements.