Compostable Waste Bags
Certified Compostable Waste Bags for Organic Waste Systems
EN 13432 certified solutions, engineered for real-world use and industrial waste treatment.
Certified. Reliable. Compostable.
Walki compostable waste bags provide a certified, high-performance solution for biowaste collection across households, municipalities, waste management companies and brand owners. Manufactured from compostable polymers and certified according to EN 13432 by TÜV Austria, our bags are available for both home and industrial composting. Through our Bioska and Belsack brands, Walki combines decades of material expertise, reliable European manufacturing and flexible customisation to support compliant and efficient organic waste collection.
PPWR ready – product range
A portfolio aligned with the future of packaging regulation.
As organic waste separation becomes mandatory across Europe, compostable waste bags play a key supporting role. Walki’s range is developed to meet PPWR expectations where compostable solutions are permitted and required.
Home compostable bags, certified for low-temperature composting
Industrial compostable bags for controlled facilities
Volumes from 2 L dog waste bags to 1,300 L container inliners
Multiple formats: rolls, loose-packed, boxed and bulk supply
Options for custom size, thickness, colour and print
Compostable waste bags with a drawstring that is also compostable
Born from nature,
back to nature as compost.
Our compostable waste bags are designed to follow a natural cycle. They start with carefully selected compostable raw materials, developed in close collaboration with specialist partners, and are engineered to perform reliably during everyday use. Once their task is done, they are designed to return safely to nature through certified composting processes. By combining material science, controlled manufacturing and independent certification, Walki’s compostable waste bags support organic waste collection systems that work in practice, helping organic matter complete its journey back to the soil as compost.
From material science to everyday organic waste solutions
How Walki, Bioska and Belsack turn compostable innovation into real-world performance
Behind every Bioska and Belsack compostable waste bag lies deep material expertise and close collaboration across the value chain. Our technology is the result of long-term cooperation between specialists in raw materials, extrusion, bag making and waste management. By continuously advancing compostable polymers and running real-life trials together with our customers, we develop solutions that perform where it matters: in daily use and in organic waste treatment.
Our raw material partners are carefully selected for their work on compostable, recycled and fossil-free alternatives. Collaboration starts already at the material development stage, ensuring that each formulation is optimised for its intended end use.
At our plants in Ylöjärvi, Finland and Murcia, Spain, raw materials arrive as granulates and are blended into tailored compounds. Home compostable materials are softer, more flexible and degrade at lower temperatures, while industrial compostable grades are engineered for demanding collection and treatment systems.
The result is one of Europe’s most comprehensive portfolios of compostable waste bags, covering household biowaste, professional kitchens, municipalities and waste operators. All products are designed for strength, moisture control and predictable composting performance, supporting efficient organic waste systems in practice.
One solution. Built around your needs.
Tailored to your exact requirements
At Walki, we go beyond standard formats. Thanks to our in-house R&D, film extrusion, bag making and printing capabilities, we can tailor compostable waste bags to meet your specific functional, regulatory and branding requirements.
Certified compostability
All compostable waste bags are certified by DIN Certco or OK compost TÜV Austria in accordance with the European standard EN 13432.
Shelf-ready packaging
Packaging designed to transport, protect and present products efficiently at the point of sale, improving shelf visibility.
Compostable drawstring
Compostable waste bags featuring a fully compostable drawstring, including green compostable drawstring tape. A simple pull securely closes the bag, combining convenience with certified compostability.
Easy separation with simply tear
Smart perforation and tear solutions enable quick and clean separation, improving usability for both consumers and professional users.
High resistance performance
Extensive R&D and high-quality compostable raw materials ensure durability, tear resistance and reliable performance in real-world waste handling.
Bioska Plus – faster composting performance
The Bioska Plus range is engineered to degrade faster in industrial composting, transforming organic waste into compost and supporting nutrient return to the soil.
Printable compostable bags
Environmentally conscious printing using compostable-certified inks, combining visual impact with sustainability to strengthen your brand at the point of use.
designed to work in real organic waste systems
Sustainability delivered through performance
Walki compostable waste bags are designed to support organic recycling in real-life use, not just in theory. By enabling clean biowaste collection, they help reduce contamination in compost streams and support efficient composting and biogas processes. Sustainability is considered at every stage, from material choice to certified end-of-life solutions.
At the same time, the bags are made to perform during daily use. They are strong enough to handle moisture, weight and handling, yet designed to break down properly during composting. This balance between durability and compostability is essential for municipalities, waste operators and professional users who need compostable waste bags they can rely on every day.
Key features
- Compostable polymers aligned with European standards
- Certified end-of-life pathways for regulated composting systems
- Designed for organic waste recovery, not landfill persistence
- Breathable structures that reduce condensation
- High tear resistance during filling, handling and transport
- Designed to break down efficiently in industrial composting and biogas processes
Who uses Walki compostable waste bags?
Private label and brand owners
Municipalities and waste management companies
Retailers and consumer brands
Foodservice and hospitality operators
Industrial and commercial facilities
Compostable vs non-certified “biodegradable” bags
| Walki compostable waste bags | Non-certified “biodegradable” bags | |
|---|---|---|
| Certification | TÜV Austria certified to EN 13432 | No independent verification |
| Composting performance | Designed for regulated composting systems | Often fragment without composting |
| Acceptance by waste facilities | Accepted by waste treatment facilities | Frequently rejected as contamination |
| Regulatory confidence | Supports compliant organic waste collection | Creates risk for operators and brands |
Want to learn more about our compostable brands?
Discover Bioska and Belsack – Walki’s specialised brands for compostable materials and waste bags. Explore their product ranges, certifications and application areas, and see how each brand supports reliable organic waste collection and composting performance.
Yes. All Walki compostable waste bags are certified by TIN Certco or TÜV Austria according to EN 13432, with options for home and industrial composting.
Home compostable bags are designed to break down at lower temperatures, while industrial compostable bags require controlled composting conditions.
Yes. Walki offers large-volume sacks and inliners tested for professional biowaste collection and treatment systems.
Yes. Walki supports brand owners with customised sizes, thicknesses, colours and printing using compostable-certified inks.
They support organic waste separation and compostable packaging strategies where allowed under PPWR and national regulations.
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