Can Biodegradable Plastics Really Be Completely Degraded?
author: Iris
2025-05-23
1. Biodegradable Plastics: What Are They?
The word "biodegradable" sounds environmentally friendly and advanced, but does it really mean a complete "return to nature"? Understanding what is truly biodegradable plastic is the first step to choosing environmentally friendly packaging.
What Is Biodegradable Plastic?
Biodegradable plastics are a type of material that can be decomposed into water, carbon dioxide (or methane), and biomass by microorganisms under specific environmental conditions. Common types include PLA (polylactic acid), PBAT (aliphatic-aromatic copolyester), and PBS (polybutylene succinate). Unlike traditional plastics such as PP (polypropylene) and PS (polystyrene), the molecular structure of biodegradable plastics allows them to be naturally degraded under suitable temperature, humidity, and bacterial conditions, rather than being difficult to decompose for hundreds of years.
Common Types and Application Scenarios of Biodegradable Plastics
Common biodegradable packaging on the market currently includes: bagasse takeaway boxes, PLA bags, degradable straws, bioplastic lunch boxes, etc. These materials are widely used in takeaway catering, supermarket packaging, express packaging, and other fields. Among them, bagasse takeaway boxes are made from sugarcane fiber, which is not only degradable but also naturally compostable, and are widely favored by environmentally friendly catering brands.
Can They Really Be Completely Degradable?
Although many products are advertised as "100% degradable", this "complete degradation" is not true in all environments. For example, PLA needs to be decomposed under industrial composting conditions (about 60°C, high humidity, aerobic environment) for more than several weeks. In natural soil, seawater, or home composting environments, its degradation rate is extremely slow, and may even be no different from ordinary plastics. Therefore, understanding the prerequisites for degradation is the first step to avoid "environmental misunderstandings."
3. Alternatives to environmentally friendly packaging: Can we do better?
Faced with the reality of "degradable but under certain conditions", many companies and consumers have also begun to explore other, more feasible and effective environmentally friendly packaging solutions.
Bagasse Products: Natural Fibers Are Easier to Decompose
Bagasse takeaway boxes are made from sugarcane fibers after sugar extraction and do not contain plastic or harmful chemicals. This material can be decomposed in the natural environment and can return to the soil in about 60-90 days. It is regarded as a truly "nature-friendly" packaging solution, especially suitable for the takeaway catering industry. In Europe and other countries, bagasse packaging has been widely used in airline catering, green supermarkets, and environmentally friendly brands.
Reusable Lunch Boxes Are on the Rise
With the popularization of the "zero waste" concept, reusable takeaway boxes have begun to become popular in office buildings, schools, restaurants, and other settings. Compared with disposable packaging, they have a lower carbon footprint and a longer service life, and can be used multiple times with proper cleaning. Some high-end brands have integrated reusable packaging with brand image through design sense and material optimization.
Customized Eco-Friendly Packaging: A Win-Win for Brands and the Environment
For catering companies that want to improve brand recognition, environmental protection is no longer just an obligation, but also a marketing tool. By customizing Chinese takeaway boxes with brand logos and using degradable or recyclable materials, it can not only comply with environmental protection policies but also attract young consumers with strong environmental awareness. In addition, providing personalized packaging solutions can also enhance customer stickiness and brand favorability.
How Catering Companies Choose the Right Environmentally Friendly Packaging Supplier?
For catering companies, the first step in choosing truly degradable packaging is to find the right supplier. The following standards are recommended for reference:
- Whether it has BPI, TÜV, DIN, and other certifications.
- Whether it can provide product material test reports and degradation instructions.
- Whether it supports customized services (such as customized Chinese takeaway boxes).
- Whether it provides reusable solutions (such as a reusable takeaway box) or environmentally friendly recycling guidance.
- Whether the supply chain is stable and the price is reasonable.
Through rigorous screening standards, we can not only ensure the implementation of environmental protection but also help enhance the brand image of the company in the minds of consumers.
2. The Truth About the Environment and Time Behind "Complete Degradation"
Most people think that "degradable" means "throw it into the trash and it will disappear by itself". But in fact, degradation cannot be achieved without strict environmental conditions and time support.
Home Composting Vs. Industrial Composting
Most biodegradable plastics, such as PLA or PBAT, need to be decomposed in an industrial composting environment (above 60°C and with sufficient oxygen) within 90 days. In contrast, home composting conditions have lower temperatures and complex strains, and the degradation rate is much slower, or even impossible to decompose. This means that if these plastics enter the ordinary garbage system, they may still be incinerated or landfilled in the end.
Time Factor: Analysis of the Degradation Cycle of Different Biodegradable Materials
The degradation time of different materials varies greatly. For example, bagasse takeaway boxes, as a natural plant fiber product, can be naturally decomposed within 60-90 days. PLA has a degradation cycle of about 90-180 days under industrial composting conditions, while PBAT usually takes more than 180 days due to its complex structure. Under natural conditions, the degradation cycle may double or even fail to degrade. Consumers should understand whether the degradation time and applicable conditions are indicated on the product label when purchasing.
Environmental Misunderstanding: "Degradable" ≠ "Discarded Anywhere"
"Degradable" does not mean that it can be thrown away at will. Throwing degradable plastics on the street, beach, or ordinary trash cans will not make them disappear automatically. In practice, such products should be sent to organic composting plants or processed through specific recycling systems, otherwise, their degradation advantages will be greatly reduced and even affect their environmental image.
4. How to Judge Whether the Packaging Is Really "Degradable"?
In the tide of environmental protection, "degradable" and "green and environmentally friendly" have almost become standard features on all product packaging. But do these signs mean that it is really environmentally friendly? Only by learning to distinguish true and false "environmental protection" can we avoid being misled by green marketing.
Check the Authoritative Certification Mark
To identify whether a package is truly degradable, the most direct way is to check whether it has a relevant environmental certification. The mainstream biodegradable packaging certifications in the world include:
- BPI (Biodegradable Products Institute): an authoritative American organization that has strict standards for compostable materials;
- TÜV Austria: provides two types of labels, "OK Compost Home" and "OK Compost Industrial", corresponding to products suitable for home and industrial composting, respectively;
- DIN CERTCO: a German certification agency that complies with the EU EN 13432 standard;
- The EU "Seedling" mark: indicates that the packaging meets the industrial composting standard.
With these certification marks, we can ensure that bagasse takeaway boxes, PLA products, etc., are truly degradable.
Beware of Green Marketing: Identify the "Greenwashing" Trap
In order to cater to the trend of environmental protection, some packaging companies will use vague words such as "green" and "degradable", but in fact, they lack certification and do not have environmental attributes. This behavior is called "greenwashing" and is extremely misleading to consumers. For example, some Chinese takeaway boxes are advertised as environmentally friendly, but they still contain PE coatings and are difficult to compost and decompose, and are "pseudo-environmentally friendly" products.
It is recommended that consumers check whether detailed information such as material type, degradation conditions, and certification agencies is indicated to avoid "looking environmentally friendly but actually wasteful".
It is recommended that consumers check whether detailed information such as material type, degradation conditions, and certification agencies is indicated to avoid "looking environmentally friendly but actually wasteful".
Where to Buy?
If you're looking for reliable suppliers of biodegradable food containers or reusable takeaway boxes, here trusted options to consider:
Huizhou Yangrui Printing and Packaging Co., Ltd.
Products: bagasse takeaway boxes, PLA containers, custom Chinese takeaway boxes
Certifications: ISO9001, FDA, SGS, BPI
Support: OEM/ODM, customized printing, bulk wholesale orders
Contact: Email: sales@yrpak.com | Website: www.yrpak.com
Certifications: ISO9001, FDA, SGS, BPI
Support: OEM/ODM, customized printing, bulk wholesale orders
Contact: Email: sales@yrpak.com | Website: www.yrpak.com
References
- European Bioplastics. (2023). Bioplastics market data. Retrieved from: //www.european-bioplastics.org
- BPI – Biodegradable Products Institute. (2022). Certified Compostable Products. //www.bpiworld.org
- TUV Austria. (2023). OK Compost Certification. Retrieved from: //www.tuv-at.be
- Song, J. H., Murphy, R. J., Narayan, R., & Davies, G. B. H. (2009). Biodegradable and compostable alternatives to conventional plastics. Philosophical Transactions of the Royal Society B: Biological Sciences, 364(1526), 2127-2139.
- Ellen MacArthur Foundation. (2021). The New Plastics Economy: Rethinking the future of plastics. //www.ellenmacarthurfoundation.org
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