Recycled and virgin fibre board: the difference
Recycled board is made wholly or partly from fibres that have already been used in paper or board products. Waste paper is pulped, cleaned and processed into board again. Virgin fibre board, by contrast, is based on freshly produced wood pulp. Many grades are multi-layered and combine both, for instance a recycled middle layer with a virgin fibre top layer.
Fibres cannot be reused indefinitely. Each recycling cycle shortens them and reduces their strength. The paper cycle therefore constantly needs fresh fibre too, and recycled and virgin board complement each other rather than compete.
| Feature | Recycled board | Virgin fibre board |
|---|---|---|
| Fibre source | Recovered paper fibres | Freshly produced pulp |
| Surface and colour | Depending on grade grey core, coated top layer possible | Usually light and uniform |
| Strength | Highly grade-dependent, often higher grammage for the same stiffness | High stiffness at comparatively low weight |
| Food contact | Possible, requires careful assessment | Usually easier to assess, but assessment still required |
Is recycled automatically greener?
Not necessarily. Fibre origin is only one factor among several. Anyone assessing the environmental impact of packaging has to look at the whole life cycle.
- Material use: does the recycled board need a higher grammage for the same stability?
- Production: energy and water consumption and the mill’s energy sources.
- Transport: origin of the board and distances in the supply chain.
- Converting: waste during die-cutting, folding and gluing.
- Finishing: coatings, laminations and barriers that may hinder later recycling.
- Product protection: packaging that fails to protect the product causes more waste than it saves.
The greenest packaging is the one that reliably protects the product with as little material as possible and can then be recycled well.
Where recycled board works well
Recycled board is used for folding cartons, trays, outer packaging, inserts and displays in food and non-food. Available grades differ widely in strength, surface, whiteness and grammage. Modern coated grades also allow demanding print work.
It typically suits applications where the product has no direct contact with the board, mechanical demands are moderate and a natural or slightly grey look is acceptable. It gets more demanding with heavy products, long storage in humid conditions, premium finishes or high-speed packing machines that require tight tolerances.
Practical tip
Always test new board grades on your own packing line and under real transport and storage conditions. Data sheets show laboratory values, not behaviour in a cold room or on a pallet.
Food contact: the trickiest question
Recycled fibres may contain residues from their previous life, such as components of printing inks, adhesives or mineral oils. Under certain conditions these substances can migrate into food. Swiss food law requires that packaging does not release substances in quantities that endanger health or alter the food unacceptably. Specific rules also apply to printing inks on food packaging.
Whether a recycled board is suitable depends on several factors:
- Type of food: dry, moist or fatty
- Direct or only indirect contact
- Contact and storage time as well as temperature
- Required barrier effect and the overall packaging structure
Functional barriers such as coatings or inner bags can limit the migration of certain substances. They do not, however, make recycled board automatically suitable for every use. What counts is the interplay of board grade, construction, barrier and period of use. Ask the supplier for a declaration of compliance for the specific application and, if in doubt, have migration tests carried out.
Checklist for purchasing and product development
- Define requirements: product weight, protection needs, stacking load, storage climate, food contact.
- Set the look: which print quality and finish does the brand really need?
- Check the process: runnability on the packing or folder-gluer line, creasing, gluing.
- Compare options: recycled, virgin and mixed constructions against the same performance target.
- Request documents: technical data sheets, declarations of compliance, recycled content details.
- Test and document: line trials, transport tests and, for food, a migration assessment.
Typical mistakes
- Using recycled content as the only sustainability criterion.
- Comparing board on price per tonne rather than cost per working pack.
- Specifying a barrier without evidence of its effect in the actual application.
- Choosing coatings that make recovery with waste paper more difficult.