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Product Specification
| Product Name | 1-5kg Flat Bottom Bag |
| Material | Kraft/PET/AL/PE, BOPP/VMPET/LLDPE, PET/NY/PE, Recyclable mono-material, Compostable PLA, Transparent, Metalized |
| Bottom Design | Block bottom 3-12cm depth, Square bottom, Reinforced panel, Double folded, Heat sealed, K-seal, Plow bottom, Load bearing |
| Closure | Resealable zipper, Slider zip, Tin tie, Pinch bottom, Heat seal, Tear notch, Euro hole, CRC lock |
| Size / Capacity | 1kg – 5kg, 2lb – 11lb, Width 100-350mm, Height 200-600mm, Bottom 50-120mm, Custom dimensions |
| Printing | Rotogravure up to 11 colors, Flexo HD, Digital, Full color, Matte/Gloss, Spot UV, Emboss, Holographic, 360° print |
| Feature | Degassing valve, Window, Carry handle, QR code, Oxygen barrier <2 cc, Moisture barrier <1 g, Puncture resistant, EVOH layer |
| Application | Coffee 1-5kg, Pet food, Snacks bulk, Protein powder, Flour, Rice, Nuts, Tea, Commercial packaging |
| Certification | FDA, EU 10/2011, BPA free, Food grade, ISO, BRC, HACCP, FSSC 22000, Kosher, Halal, REACH, FSC |
Why Choose Our Flat Bottom Bags?
For Family Users: What's the Best Experience?
You buy a 5-pound bag of rice or a 2-pound bag of pet food at the supermarket, and then you put it in the cupboard at home—can the bag stand up on its own? How do you seal it after opening? Is it easy to pour out?
The square-bottom bag design addresses these pain points perfectly:
It stands up on its own. The bottom is flat, unlike ordinary bags that need to lean against something to stand upright. It looks neat and tidy in cupboards, refrigerators, and on shelves.
The wide opening makes pouring easy. The top is wider than ordinary bags, making it easy to pour rice or scoop flour without spilling. A sealing strip is standard; if you don't finish it all at once, you can just squeeze it to seal it—no need for clips. This prevents rice from getting infested with insects and dog food from getting damp.
It's stable to hold. Larger capacity bags can be fitted with handles, making it easier to lift and pour than carrying the bag. Pet owners say that after switching to square-bottom bags with handles for their dog food, they feel, "This is something designed by humans!" every time they pour out the food.
For the Brand: Why Switch?
The difference in shelf presence. A row of flimsy bags on a supermarket shelf, suddenly replaced by a square-bottomed bag with a flat bottom—doesn't it catch the eye more? It stands upright, allowing printing on the front, back, and sides, effectively adding advertising space.
Packaging costs are reduced. Square-bottomed bags arrive flat, allowing for thousands to be packed into a box, resulting in significantly lower warehousing and transportation costs compared to rigid containers. Friends in the food industry have calculated that switching to square-bottomed bags can save 30%-50% on shipping costs.
Reliable freshness preservation. 1-5kg bags often contain moisture-sensitive items like rice, flour, coffee beans, and pet food. Square-bottomed bags use a multi-layered composite structure with aluminum foil or EVOH high-barrier layers, preventing moisture and oxygen from entering, ensuring a shelf life of 12-18 months.
Eco-friendly appeal is easier to achieve. Young consumers care about the environmental friendliness of packaging. Square-bottomed bags can be made from a single material, PE, with a recycling rate of over 90%; or from kraft paper, offering a natural texture and being recyclable and biodegradable.
What is it suitable for?
Rice and cereals – 1-5kg, moisture-proof and load-bearing, handle optional.
Flour and premixed powder – large opening for easy scooping, moisture-proof sealing strip.
Coffee bean powder – high barrier to light, one-way vent valve optional.
Pet food – 1.5-5kg, moisture-proof, handle, and sealing strip are standard.
Nuts and dried fruits – high barrier to prevent oxidation, transparent window optional.
Tea – high barrier to light, one-way valve optional.
Candy and snacks – sealing strip for freshness, transparent window optional.
In terms of materials, kraft paper + PE coating is suitable for rice and cereals, environmentally friendly and high-quality; PET/AL/PE high barrier is suitable for coffee and tea; aluminized film is suitable for snacks and pet food; single PE is suitable for environmentally friendly brands.
Functionally, the sealing strip can be repeatedly opened, the easy-tear opening does not require scissors, the vent valve is specifically for coffee beans, the transparent window directly displays the product, and the handle is easy to carry.
If you are looking for a supplier,
we have shipped many 1-5kg square bottom bags for rice, coffee, pet food, and flour. The bags are laid flat upon arrival at the factory; filling is done with a simple stretcher, compatible with both manual and automated lines. You can send samples to check the feel beforehand, or discuss which structure best suits your product. Feel free to let me know what you'd like to know.
