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Are Compostable Bags Truly Compostable? Torise Biomaterials' 15-Year Journey to Authentic Sustainability

Are Compostable Bags Truly Compostable? Torise Biomaterials' 15-Year Journey to Authentic Sustainability

Mar 18,2025

Are Compostable Bags Truly Compostable? Torise Biomaterials’15-Year Journey to Authentic Sustainability


As environmental awareness grows, "compostable bags" have become a popular alternative to traditional plastics. However, consumers often ask: "Do these bags really decompose completely? Or are they just greenwashed imitations?"

At Torise Biomaterials, we understand these concerns and have been pioneering sustainable solutions since August 2010. Let’s take a closer look at the science, certifications, and practices behind truly compostable products.

Compostable ≠ Degradable! The 3 Essential Conditions for Breakdown


Compostable bags decompose through microbial metabolism into water, carbon dioxide and organic matter, rather than natural weathering. This process requires strict conditions:

Temperature and humidity: Industrial composting requires 50–60°C; home composting relies on ongoing microbial activity.
Microbial action: Bacteria and fungi in the soil or composting system must actively consume the material.
Timeframe: Certified products must decompose more than 90% within 180 days, leaving no toxic residues.

In contrast, common "biodegradable" plastics have a broad concept, no certification standards, and often cause microplastic pollution. What's the difference? True compostability ensures zero harm.

Global Certifications: The “ID” of Authentic Compostability


Truly compostable products must pass strict international standards. Torise Biomaterials' full range of products, including shopping bags, garbage bags, dog poop bags, clothing packaging, courier bags, cutlery and PLA cups, are certified by:

Industrial composting: EN13432 (EU), DINplus (Germany), ASTM D6400 (BPI, USA), AS4736 (Australia)
Home composting: OK Compost HOME (TUV, Austria), AS5810 (ABA, Australia)

What do these certifications mean?


For example, EN13432 requires a decomposition rate of more than 90% within 12 weeks and very low levels of heavy metals. OK Compost HOME simulates backyard composting and decomposes without the need for industrial facilities. Each certification is a non-negotiable commitment to authenticity.

From Plants to Soil Nutrients: The Science Behind Torise’s Compostable Solutions


Since 2010, Torise Biomaterials has been innovating plant-based alternatives to petroleum-based plastics, leveraging the following benefits:

Natural resins: derived from corn starch, sugar cane and vegetable oils, blended with compostable polymers (PBAT, PLA) to form 100% bio-based, non-toxic materials.
Advanced modification: balance flexibility, strength and decomposition efficiency through cutting-edge mixing and cross-linking technologies.
Full product ecosystem: from everyday shopping bags and pet waste bags to compostable aprons and PLA tableware, serving households, retailers and the logistics industry.

How to Use Compostable Bags Correctly? Maximize Their Eco-Impact


Match the Scenario:
  ·Industrial Compostable Bags: For communities with professional composting facilities.
  ·Home Compostable Bags (OK Compost HOME Certified): Bury directly in a backyard compost bin.
Avoid Contamination: Never mix with traditional plastics to protect composting systems.
Dry Storage: Store unused bags in a dry environment to prevent premature degradation.

15 Years of Innovation: Turning Sustainability Promises into Action


For Torise Biomaterials, true sustainability means responsibility across the supply chain:

●Annual reduction of 8,000+ tons of petroleum-based plastics.
●Global reach across 30+ countries, advancing circular economies.

Compostable bags’ value starts with science and ends with trust. Choosing certified products is how we truly protect our planet.

Explore Certified Compostable Solutions Today


Click to discover Torise Biomaterials’ full range of certified products. Every purchase powers the circular economy!
100% Compostable Shopping Bags | Custom Eco-Friendly Shopping Bags | Torise Biomaterials | Wholesale Supply | High Load-Bearing and Durable
Compostable shopping bags | Custom printing | Durable, eco-friendly | Ideal for supermarkets & retailers | MOQ:500kg
Compostable Pallet Stretch Film for Machines | ASTM D6400 & EN13432 Certified | Factory Direct | 1000kg MOQ | Ideal for Shipping and Pallet Wrap
Customizable options for businesses | Factory direct pricing | 1000kg MOQ | Perfect for shipping and pallet wraps
Wholesale 100% Compostable Paper Bag with Plant-based Leak-proof Lining for Kitchen Food Waste
Kitchen Food Waste Bag | 100% Compostable Paper Bags with Leak-Resistant Liner | Completely Plastic-Free | MOQ: 1000kg
Compostable trash bags, Wavetop kitchen compost bags for household trash cans, BPI and OK Compost certified
This kitchen Wavetop compostable trash bag is perfect for home use, BPI and OK Compost certified, and features an easy tie closure.
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