Everything You Need to Know About This Compostable Alternative
As plastic pollution continues to rise, businesses and consumers are turning to sustainable packaging. One question we often hear is:
Are corn starch bags a real solution—or just another greenwashing tactic?
The short answer is yes. Corn starch bags are biodegradable and compostable. This makes them a better choice than regular plastic. In this article, we’ll explain how they work, what they consist of, their benefits, and how to buy them in bulk.
What Are Corn Starch Bags?
Manufacturers create corn starch bags from renewable, plant-based materials. Unlike petroleum-based plastic, they’re designed to break down naturally in composting environments.
Most of these bags contain PLA (polylactic acid) and PBAT, both derived from corn or other starchy plants. This composition allows the bags to decompose within months—not centuries like regular plastic.
Benefits of Corn Starch Bags
These bags offer clear environmental and business benefits. Here’s how they compare to plastic:
| Feature | Corn Starch Bags | Traditional Plastic Bags |
|---|---|---|
| Biodegradability | Yes (3–6 months industrial compost) | No |
| Compostable | Yes (with certifications) | No |
| Material Source | Renewable (corn, starch) | Fossil fuels |
| Greenhouse Gas Emissions | Lower | Higher |
| Food Contact Safe | Yes | Usually yes, but may leach toxins over time |
| Breaks Down in Landfill | No (needs compost) | No (persists for centuries) |
Are They Really Compostable?
Yes, but only if the bag has proper certifications. Look for these on the packaging or ask your supplier:
| Certification | Region | Meaning |
|---|---|---|
| ASTM D6400 | USA | Meets industrial composting standards |
| EN 13432 | Europe | Confirms biodegradation, disintegration & eco-toxicity |
| OK Compost | Global | Verified for composting conditions |
| OK Compost HOME | Global | Suitable for home composting setups |
Always request documentation from your supplier to verify compostability.
How to Use Corn Starch Bags for Your Business
These bags are ideal for:
- Grocery stores & produce packaging
- Farmers’ markets
- Organic product brands
- Subscription box businesses
- Restaurants offering takeaway in eco-packaging
They are strong, breathable, and customizable with your branding.
Pricing Overview
If you’re sourcing in bulk, here’s what you can expect:
| Bag Type | Size | Thickness | Certification | MOQ (pcs) | Price per Unit (USD) |
|---|---|---|---|---|---|
| Standard Bag | 12 x 20 in | 15 microns | EN 13432 | 5,000 | $0.035 |
| Home Compostable | 12 x 20 in | 20 microns | OK Compost HOME | 5,000 | $0.045 |
| Custom Printed | 12 x 20 in | 20 microns | EN 13432 | 10,000 | $0.05–0.07 |
FAQs About Corn Starch-Based Bags
Q1: Are they home compostable?
Only if labeled “home compostable.” Otherwise, they need industrial composting facilities.
Q2: Will they break down in landfills?
No. Compostable bags require heat, moisture, and microbes to degrade—conditions that landfills don’t provide.
Q3: Are they safe for food use?
Yes. All bags we offer meet food-contact safety standards.
Q4: How should I store them?
Keep them in a cool, dry place. Shelf life is typically 12 months.
Q5: Can I customize them with my logo?
Absolutely. Custom printing is available for bulk orders.
Ready to Switch to Compostable Packaging?
With a minimum order of 5,000 pieces, our plant-based bags are ideal for wholesale and bulk buyers.
👉 Contact us today to get a custom quote and samples.
