IN Brief:
- Colgate-Palmolive, Mars, Nestlé, PepsiCo, Procter & Gamble, and Unilever are founding members of PaperFlex.
- Trials will examine coatings, product protection, shelf life, consumer use, and performance on packaging machinery.
- The programme targets paper formats capable of replacing small flexible plastic packs without sacrificing essential product protection.
Six multinational consumer-goods groups have joined a collaborative programme intended to accelerate paper-based alternatives to flexible plastic packaging, with the work extending from coatings and material design into shelf-life protection and performance on commercial packing lines.
Ellen MacArthur Foundation has convened the PaperFlex Consortium with Colgate-Palmolive, Mars, Nestlé, PepsiCo, Procter & Gamble, and Unilever as founding members. Sustainability consultancy (RE)SET is supporting the programme, which remains open to other businesses using small-format flexible packaging.
The consortium will concentrate initially on markets where flexible plastics are widely used but formal collection and recycling systems remain limited. Its development brief combines recyclability with biodegradability where packs unintentionally escape waste-management systems, while maintaining the functional properties needed to protect food and other consumer products.
That combination presents a more difficult engineering problem than substituting one sheet material for another. Flexible food packs can require control of moisture, oxygen, grease, aroma, seal integrity, and mechanical strength, while high-speed packaging machinery adds further demands around stiffness, friction, folding, web handling, sealing, and dimensional stability.
PaperFlex members plan to fund and conduct collaborative trials covering technologies including biodegradable coatings and other functional treatments. Product protection, shelf life, usability, and machinability are all included in the programme, placing production performance alongside the end-of-life properties of the material.
Manufacturing performance can determine whether an otherwise promising fibre structure reaches commercial use. A laboratory coating may provide the required oxygen or grease barrier but remain unsuitable if the finished web tears, curls, seals inconsistently, produces excessive rejects, or forces a packaging line to run substantially below its established speed.
The same pressure is driving wider development of fibre-based barrier materials, where developers are attempting to add moisture, grease, and oxygen resistance without turning a predominantly cellulose pack into another difficult multilayer structure.
PaperFlex is intended to pool some of that development effort. Large brand owners often work against similar requirements even when their product portfolios differ, creating repeated testing around barrier performance, shelf life, converting, sealing, and consumer handling. A common programme gives material developers, converters, coating specialists, and machinery suppliers a more consistent set of problems against which to develop and validate technology.
Scale matters because flexible packaging is used precisely because it performs a large amount of work with relatively little material. Replacing it with a substantially heavier fibre structure, a complex combination of coatings, or a format that increases product waste can undermine part of the environmental case for the change.
The consortium consequently places product protection alongside recyclability and biodegradability. Food lost through moisture ingress, oxidation, damaged seals, or shortened shelf life carries its own material and energy burden, while a technically recyclable package has limited practical value in a market without collection and processing infrastructure.
PaperFlex also plans to retain learning from unsuccessful trials. That can be important in packaging development, where repeated work on structures that fail the same sealing, barrier, or line-speed tests wastes both development time and pilot capacity. Shared evidence can narrow the range of technologies taken forward before individual companies begin product-specific qualification.
The commercial challenge is particularly acute in small packs. Sachets, wrappers, pouches, and similar formats use little material per unit, but their low weight and mixed structures make collection and sorting difficult. Any paper alternative has to preserve that material efficiency while offering enough strength and barrier performance to survive filling, distribution, storage, retail handling, and consumer use.
The programme therefore starts from a less comfortable premise than much packaging substitution work: paper does not automatically provide a drop-in answer to every flexible-plastic application. Fibre structures still have to pass the machinery, shelf-life, cost, and product-protection tests that established plastics already meet.
Bringing six of the world’s largest consumer-goods groups into a common development programme gives PaperFlex purchasing scale and access to a wide range of packaging applications. Whether that translates into deployable formats will be decided further down the line, when the materials have to keep products intact at industrial filling speeds rather than simply demonstrate promising properties in a laboratory.
