Sustainable Packaging Is Moving From a Concept to a Material Decision
For many food brands, packaging decisions used to focus mainly on three factors: product protection, appearance, and cost. A coffee company needed a bag that could preserve aroma, a tea brand needed protection against moisture and external odors, and a snack producer needed packaging that could maintain freshness throughout distribution.
However, the conversation around flexible packaging is changing. As European regulations and market expectations continue to evolve, brands are paying more attention to the materials behind their packaging. The question is no longer only whether a package looks attractive or performs well, but whether it can achieve the right balance between product protection, production efficiency, and environmental considerations.
This shift is closely connected with the increasing pressure on packaging waste management in Europe. According to Eurostat, the European Union generated 83.4 million tonnes of packaging waste in 2022, equal to approximately 186.5 kg per person. Plastic packaging represented around 19% of total packaging waste, making the improvement of plastic packaging systems an important part of future packaging policies.
The EU Packaging and Packaging Waste Regulation (PPWR), officially published as Regulation (EU) 2025/40, introduces requirements related to packaging recyclability, recycled content, and packaging design. For food brands, this does not simply mean replacing traditional packaging with a new "green" material. The real challenge is finding materials that can work in demanding applications while supporting future sustainability goals.
Mono-Material Packaging: Why PE-Based Structures Are Receiving More Attentio
One of the most discussed directions in sustainable flexible packaging is mono-material packaging.
Traditional flexible packaging often uses multiple layers because each material contributes different functions. A common coffee pouch structure, for example, may combine PET, aluminum foil, and PE. PET provides printing quality and stiffness, aluminum offers excellent oxygen and light protection, while PE provides sealing performance and flexibility.
This combination has been widely used because it delivers reliable product protection. However, the combination of different materials can create additional challenges for recycling systems.
As a result, packaging developers have been exploring PE-based mono-material structures, including MDO-PE, BOPE, and PE/EVOH/PE solutions.
MDO-PE improves the mechanical properties of polyethylene through controlled stretching during film production. Compared with conventional PE films, MDO-PE can provide:
- better stiffness
- improved printability
- enhanced appearance
making it a potential option for brands looking to move toward simplified material structures.
BOPE is another development in polyethylene film technology. By stretching PE film in two directions, manufacturers can improve strength, transparency, and processing performance.
For products requiring stronger barrier protection, PE/EVOH/PE structures are also being explored. EVOH (Ethylene Vinyl Alcohol Copolymer) is known for its excellent oxygen barrier properties and is often used as a thin functional layer inside packaging structures.
However, sustainable packaging development is not simply about selecting a recyclable structure on paper. The material still needs to perform under real conditions.
A coffee pouch, for example, must
- maintain aroma protection for months
- survive transportation
- maintain reliable sealing performance on production lines
This is why packaging development requires a balance between material innovation and practical application experience.
PCR Materials: Why Recycled Content Requires More Than Just Adding Recycled Plastic
Recycled content materials are another important area of sustainable packaging development.
Post-consumer recycled plastics, including recycled PET (rPET) and recycled PE (rPE), are increasingly discussed because they can reduce dependence on virgin plastic resources. The PPWR also introduces future requirements for recycled content in certain plastic packaging categories, which is expected to increase demand for recycled materials.
However, applying recycled materials to flexible packaging is more complicated than simply replacing virgin plastic.
For rigid packaging such as bottles, recycling systems are relatively mature, and the main focus is often structural performance. Flexible packaging has additional requirements because the film must provide
- flexibility
- sealing strength
- printing quality
- protection
against external factors.
For example, a food brand may want to introduce PCR content into a stand-up pouch because of sustainability targets. But during development, several questions need to be answered:
Will the recycled material maintain consistent quality between batches?
Will it affect the appearance of the printed package?
Can the final structure still provide sufficient barrier performance?
Can it run smoothly on existing filling equipment?
These questions show an important reality: recycled materials are not a direct replacement solution. They need to be carefully engineered into the complete packaging structure.
Compostable Materials: Where PLA and PBAT Fit Into Flexible Packaging
While recycled materials focus on improving plastic circulation, compostable materials represent another approach to sustainable packaging.
PLA is one of the most recognized bio-based materials. It is commonly produced from renewable resources such as corn starch or sugar-based feedstocks and is known for its transparency and bio-based origin.
However, PLA also has limitations. Compared with conventional flexible packaging materials, it may face challenges :
- heat resistance
- moisture protection
- processing conditions
PBAT is another material frequently discussed in compostable packaging. Unlike PLA, PBAT provides greater flexibility and toughness, which is why it is often blended with PLA to improve film performance.
PLA/PBAT blends have been explored for applications such as compostable films and bags. However, their commercial application depends heavily on the product requirements.
A packaging solution that works well for a short-life dry product may not be suitable for premium tea or coffee products that require long-term aroma and moisture protection.
This is an important point for brands: a sustainable material is not automatically the right material.
The correct choice depends on the product, shelf-life requirements, production process, and final disposal environment.
A Real Industry Example: Why Coffee Packaging Shows the Difficulty of Sustainable Material Development
Coffee packaging is one of the clearest examples of how difficult sustainable material transitions can be.
Premium coffee requires strong protection because roasted coffee continues releasing gases after roasting and is highly sensitive to oxygen exposure. Traditional coffee bags often use structures such as PET/aluminum foil/PE because each layer provides a specific function.
The aluminum layer delivers excellent barrier performance, helping protect aroma and freshness. However, the multi-layer structure can create challenges when brands consider future recycling requirements.
As a result, the industry has been exploring alternative structures such as PE-based mono-material coffee pouches with high-barrier solutions.
During this type of packaging redesign, the goal is not simply to remove aluminum or replace PET. Developers need to evaluate whether the new structure can maintain:
- oxygen transmission performance
- moisture protection
- aroma retention
- sealing reliability
- transportation durability
A packaging structure may look more sustainable during the design stage, but it must still prove that it can protect the product after filling, shipping, storage, and consumer use.
This is why sustainable packaging projects often require cooperation between brands, material suppliers, and packaging manufacturers.
Sustainable Packaging Development Requires Packaging Experience, Not Only New Materials
The development of sustainable flexible packaging is changing the role of packaging suppliers.
Brands are no longer only looking for someone who can produce a printed pouch. They need partners who understand how different materials behave during production and real-world use.
A coffee brand may need a high-barrier structure combined with zipper and degassing valve functions.
A tea brand may prioritize aroma retention, moisture resistance, and premium appearance.
A pet food brand may focus more on mechanical strength, sealing reliability, and transportation performance.
The same material can deliver different results depending on how it is designed into the final package.
This is where LePu works with customers during packaging development. Instead of focusing only on one material trend, LePu evaluates packaging solutions based on the product requirements, including material selection, structure design, printing, sealing performance, and practical usage conditions.
Choosing the Right Sustainable Packaging Solution for Real Applications
The future of flexible packaging will not depend on one single material.
PCR materials, mono-material structures, bio-based polymers, and compostable films all provide new possibilities, but each solution has its own application limits.
For European food brands, the most important decision is not simply choosing the newest material. It is choosing a packaging structure that can support sustainability goals while continuing to protect the product.
At LePu, we work with brands to explore flexible packaging solutions for coffee, tea, food, and pet food products. If you are evaluating new sustainable materials or looking to improve your current packaging structure, LePu can help you find a solution that matches your product requirements and market goals.