9x12 Heavy Duty Flat Poly Bags (6 mil) - Industrial-Strength Protection
When standard poly bags just won't cut it, these 6 mil heavy-duty flat poly bags deliver the extra protection your products deserve. At three times the thickness of standard bags, these 9x12 inch poly bags are built for apparel sellers, screen printers, and anyone shipping items that need puncture-resistant packaging.
Specs: 9 x 12" | 6 mil (heavy duty) | 100% Virgin LDPE | 1000/case | FDA food-contact compliant
Key Features
- Extra Thick 6 Mil Construction: Three times thicker than standard bags — won't tear, puncture, or stretch during shipping and handling
- Crystal Clear LDPE: Made from 100% virgin low-density polyethylene for excellent clarity and product visibility
- Perfect 9x12 Size: Fits folded t-shirts, sweaters, documents, and medium merchandise perfectly
- FDA/USDA Compliant: Food-contact safe materials — versatile enough for any application
- Open-End Design: Easy to load, fold over for simple closure or heat seal for tamper-evident packaging
Applications
- Screen Printers & Apparel Sellers: Protect printed t-shirts, hoodies, and garments during storage and shipping to customers
- Etsy & Online Sellers: Add professional, heavy-duty inner packaging that protects merchandise and impresses customers
- Craft Fair Vendors: Pre-package merchandise for quick sales while keeping items dust-free and protected
- Document Protection: Store important papers, certificates, and prints safe from moisture and handling damage
- Industrial & Parts Storage: Heavy enough for hardware, tools, and components that would puncture thinner bags
Common Questions
Q: How thick is 6 mil compared to regular poly bags?
A: 6 mil is considered heavy-duty — about three times thicker than standard 2 mil bags. These bags resist tearing and punctures, making them ideal for heavier items, sharp corners, or shipping applications where you need extra durability.
Q: Will these bags fit a folded t-shirt?
A: Yes! The 9x12 inch size is perfect for folded adult t-shirts, polo shirts, and light sweaters. Many screen printers and apparel brands use this exact size for packaging individual garments.
Q: Can I heat seal these bags?
A: Absolutely. LDPE heat seals beautifully with standard impulse sealers. You can also simply fold over the open end and secure with tape or a sticker for a clean presentation.
Why Choose Cellobags.com
For over 40 years, we've helped small businesses, Etsy sellers, and craft entrepreneurs find the right packaging to make their products shine. These heavy-duty bags ship fast from our warehouse — so you'll never miss a market day or delay a customer order. Questions? Our team actually knows packaging and we're here to help you succeed.