Billerud Upgrades Flute: Lighter Paper, Stronger Packaging

Billerud has upgraded its Flute range, increasing paper strength while reducing packaging weight, with the aim of cutting both carbon emissions and waste. See "Billerud upgrades Flute to increase strength and reduce packaging weight"

Flute is the corrugated layer in corrugated board. It is shaped into waves and placed between two flat liner sheets, adding thickness while providing cushioning and support

The idea is to use stronger paper to make lighter packaging, so reducing paper does not have to come at the expense of product protection. How much weight can be cut still depends on the paper grade, box design, and conditions of use. When brands see the word "upgrade," they should ask about the old and new board weights and test results. A product announcement alone is not proof that the new material will work for their packaging

For brands, the benefit of lighter packaging depends on whether it still meets stacking and shipping protection requirements. Billerud pairs increased strength with reduced weight in the same Flute upgrade, a reminder that buyers should look beyond how much less paper each box uses

Lighter paper may reduce material use. But if the new grade costs more, requires different processing, or leads to more shipping damage, the total cost per box may not fall. Carbon footprint cannot be estimated from paper weight alone either. Raw materials, processing, transport, and disposal all affect the result

The specification sheet should record the weight per box, supplier pricing, shipping damage, and test conditions. Paper weight is one measure. It cannot tell the whole supply chain's story

Brands should limit ESG (environmental, social, and governance) claims to material changes they have verified. Lighter packaging does not by itself mean regulatory compliance, and it does not prove that overall carbon emissions have fallen

The information currently available from Billerud confirms that Flute paper strength has increased and packaging weight has decreased, but it does not state the amount of weight saved, compression test values, or the difference in carbon emissions. Brands can describe the direction of the change in packaging weight, but should hold off on claiming a specific percentage saved or that a particular carbon reduction target has been met

Before making a public carbon reduction claim, obtain the paper specifications, supplier data, and before-and-after packaging test results, then state clearly what is being compared. Without data that can be checked, keep the claim to the material changes that have been confirmed

Before switching paper, brands should make sample boxes for the same product using the same box design, then test protection and cost step by step

・First, record the current paper grade, weight per box, supplier pricing, and packing method. Choose a product with stable specifications

・Second, use Flute samples made with the new grade and check the boxes and products after stacking, handling, and actual delivery

・Third, include material use, processing yield, damage handling, and shipping costs in the total cost per box. Identify exactly where the savings come from

Test one product first. Billerud's upgrade points to a material design approach. Whether it works for a brand's own box has to be answered by sample boxes and delivery results

Taiwanese small and midsize manufacturers can start with box designs that have stable specifications and are reordered regularly. They can work with brands on samples, bringing material weight reduction and protection testing into the same project

The brand provides packing requirements and delivery scenarios. The box maker reports the paper grade and test results. The design and print teams then check whether the appearance, labeling, barcodes, and package dimensions still work. Buyers should keep the old and new specifications, quotes, and sample results on file so they have a basis for comparing cost and quality when orders are placed again

If a brand is updating its printed cartons, it can bring its current sample box and printing requirements to MINDS to discuss print specifications and sampling arrangements. For external communications, have the test conditions and actual weight reduction data ready so sustainability claims can stand up to questions from buyers and customers

・The Billerud Flute upgrade increases paper strength while reducing packaging weight. The weight reduction still needs to be tested on the actual box design

・Using less paper does not guarantee a lower total cost per box. Include pricing, processing, and shipping damage in the calculation

・Lighter packaging does not prove an overall reduction in carbon emissions or compliance with any specific regulation

・Small and midsize manufacturers can start by sampling one stable box design, then use stacking and delivery results to decide whether to expand

Print manufacturers can record the paper grade, weight per box, packaging revision, and sample test results in the specification file. The design team should also keep the carton dimensions and artwork version on record. If SaaS is used to manage packaging data, or AI to compare specification sheets, first make sure the data includes the paper grade, test conditions, and date. AI can help spot version differences and missing details. Carbon reduction conclusions still need to be based on supplier data and transport tests

・Billerud upgrades Flute to increase strength and reduce packaging weight