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Can Brown Paper Bags Be Composted? — a Fusion of Science and Environmentally Friendly Packaging

Can Brown Paper Bags Be Composted? — a Fusion of Science and Environmentally Friendly Packaging

Feb 11,2025
Compostable Kitchen Waste Paper Bags
Leak-proof Compostable Kitchen Waste Paper Bags
In an era of growing global environmental awareness, consumers are increasingly demanding sustainable packaging, especially for food waste disposal. Have you ever wondered if it’s safe to compost paper bags? As a commonly used bag for food waste collection, do kraft paper bags meet composting requirements? This article will explore this issue from a scientific and environmental perspective and show how Torise Biomaterials' compostable plant-based coated kitchen waste paper bags are leading the way in solutions.

The Environmental Significance and Market Demand for Compostable Packaging


Why is Compostable Packaging the Future Trend?


As the problem of plastic pollution becomes increasingly serious, compostable packaging has become an important topic in the environmental protection industry. Compostable packaging can not only effectively reduce the environmental pressure caused by landfill and incineration, but also improve soil health through natural degradation. In the process of kitchen waste treatment, the use of compostable packaging materials can greatly reduce the environmental burden of garbage.

Compostability of Kraft Paper Bags: The Gap Between Theory and Practice


It is well known that paper bags are more environmentally friendly than plastic bags. In theory, ordinary kraft paper bags can be decomposed in a composting environment without any coating treatment. However, many of the food scrap paper bags used in daily life are coated with plastic (such as PE film) or chemical waterproofing agents. These treatments greatly slow down the degradation process of paper bags and may even prevent them from completely degrading.

Advantages of Composting Kraft Paper Bags (When Uncoated)


• Rich in Organic Matter: Kraft paper bags are often made from plant materials, such as wood pulp, which is an important source of organic matter. After composting, they break down into humus, which provides essential nutrients such as carbon, hydrogen, oxygen, nitrogen and phosphorus to the soil. This nutrient-rich humus improves soil fertility, making it more conducive to plant growth.
• Improved Soil Structure: As kraft paper bags break down in the compost, they help improve soil structure. The decomposed fibers create pores in the soil, enhancing aeration and water retention. This makes it easier for plant roots to penetrate, access nutrients and get enough oxygen, resulting in healthier plant growth.
• Carbon-Nitrogen Balance: In a composting system, it is critical to achieve the correct carbon-nitrogen (C - N) balance. Kraft paper bags have a high carbon content, which can be used to balance nitrogen-rich materials in the compost, such as food scraps. This balanced C-N ratio promotes efficient decomposition by composting microorganisms, which speeds up the composting process.

Challenges of Using Traditional Kraft Paper Bags in Kitchen Waste Treatment


Composting Problems of Ordinary Paper Bags: Oil and Coating


In kitchen waste, oil, moisture, and organic waste are common pollutants. Traditional kraft paper bags are easily contaminated with oil, have poor waterproof performance, and are difficult to effectively contain garbage. Moreover, the plastic coating or petrochemical-based film on the surface of some kraft paper bags not only increases the difficulty of garbage disposal, but also hinders the natural degradation of paper bags, making it difficult to meet the composting requirements of kitchen waste.

Load-Bearing Problems of Traditional Paper Bags


Although ordinary paper bags can bear a certain weight, the structure of paper bags is easily damaged in a high-humidity and high-oil kitchen environment, especially when loading a large amount of garbage. According to relevant tests, when ordinary paper bags carry 5 kg of garbage, there is a 60% probability of bottom rupture, indicating that such bags are not suitable for long-term collection of kitchen waste.

Regulations and Certification: Compostability Standards for Paper Bags


Many countries and regions have introduced compostable packaging standards, such as the US ASTM D6400 standard, which requires compostable packaging to achieve at least 90% biodegradability within 180 days. Traditional paper bags are not scientifically designed and certified, and often fail to meet these stringent composting requirements, not to mention the specific standards for food waste.

Torise Biomaterials: Innovative Compostable Kitchen Waste Paper Bags Solution


Technological Breakthrough of Torise Plant-Based Coated Paper Bags


Torise Biomaterials plant-based coated paper bags are designed for food waste collection. Unlike traditional paper bags, the surface coating of Torise paper bags uses plant-based materials. This coating not only provides excellent water and oil resistance, but also ensures that the bag is fully degraded in the composting environment, perfectly meeting the needs of food waste collection and composting.


Main Advantages of Torise Paper Bags


• Oil and water resistance: Torise plant-based coating can effectively block the penetration of oil and dirt, ensuring that the food waste bag is not contaminated by oil and dirt and maintains its structural integrity, which is very suitable for food waste collection.
• Load-bearing capacity: Torise paper bags are processed by special technology. For example, a bag with a size of 195mm in length, 95mm in width and 295mm in height can carry up to 8 kg of food waste, avoiding rupture or leakage during garbage collection, and meeting the load-bearing requirements of food waste collection.
• 100% compostability: Torise paper bags meet international composting standards and are suitable for industrial composting environments. BPI certifies Torise paper bags to biodegrade at least 90% in 180 days, making them ideal for food waste composting.

Scientific Experiments and Certification Support


To ensure the compostability of the product, Torise biomaterials have undergone a number of rigorous laboratory tests. According to certification reports from authoritative organizations such as TÜV and ASTM, Torise paper bags perform well in different composting environments. Its degradation rate far exceed those of traditional paper bags, making it fully capable of collecting and composting food waste.

Conclusion: Torise Compostable Kitchen Waste Paper Bags - Providing Solutions for Kitchen Waste Composting


Torise plant-coated kitchen waste paper bags have significant advantages in oil and water resistance, load bearing, compostability, etc. After scientific design and strict certification, Torise products can meet the high standards of modern kitchen waste treatment. Choosing Torise is not only choosing an environmentally friendly packaging solution, but also choosing to promote sustainable development with us and share a green future.


This is a brief introduction to the role of compostable kitchen waste paper bags. If you want to learn more please contact us.
TORIS is a professional custom compostable and biodegradable product manufacturer. Since August 2010, we have been developing a full range of sustainable alternatives to traditional plastics. Our Torise products are made of natural resins derived from plant starches, plant oils and compostable polymers, which are easily consumed by microorganisms in the soil. All of our products have international authoritative certifications, such as EN13432 (Din Certco), OK Compost, OK Compost HOME (TUV Austria), ASTM D6400 (BPI), AS4736 and AS5810 (ABA).
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