BOPP/OPP Square Block Bottom Bag
BOPP/OPP square block bottom bag is a transparent, food-grade plastic bag with a flat bottom that stands upright on shelves or in packaging lines. Made from BOPP or OPP film, it provides a clear view of the contents while resisting moisture and contamination. The bag seals securely to protect dry confectionery, snacks, and spices during storage and transport.
- Flat bottom allows the bag to stand upright for better shelf presentation and automated filling
- Transparent material shows the product clearly, reducing customer uncertainty
- Food-grade BOPP/OPP resists moisture and prevents contamination during storage
- Strong seal holds during handling and transport without splitting or leaking
Include the carton size and the monthly volume and the reply will contain a format recommendation, not just a price.
Key Benefits
- Flat bottom allows the bag to stand upright for better shelf presentation and automated filling
- Transparent material shows the product clearly, reducing customer uncertainty
- Food-grade BOPP/OPP resists moisture and prevents contamination during storage
- Strong seal holds during handling and transport without splitting or leaking
- Available in 40 mic thickness or custom thickness for different product weights
- Suitable for automated filling lines due to consistent shape and bottom stability
Where It Is Used
- Packing cookies and biscuits in retail-ready bags for supermarket shelves
- Sealing chocolate bars and candy in clear bags for e-commerce and gift packaging
- Packaging dry spices and seasonings in small, stackable bags for kitchen use
- Wrapping bakery items like pastries and muffins for takeaway or retail sale
- Filling snack packs with nuts, dried fruit, or crackers in high-speed packaging lines
Who It Is For
- Food manufacturers packaging dry confectionery, snacks, and baked goods
- Bakery operators needing stackable, upright bags for takeaway or retail
- E-commerce packers shipping branded snack packs with clear product visibility
- Contract packers using automated filling lines for small dry goods
- Retailers sourcing branded packaging for private label snack products
Problems It Solves
- Flat bags that collapse during handling or storage lose product visibility and shelf appeal
- Poor seals that split during transport lead to product spillage and customer complaints
- Non-food-grade materials that fail to meet safety standards for direct food contact
- Inconsistent bag shapes that jam automated filling or packing equipment
- Lack of moisture resistance in low-grade films causes product degradation in humid environments
Technical Features
- Square block bottom design allows the bag to stand upright on shelves or in packaging lines
- Made from BOPP or OPP film with a transparent appearance for product visibility
- Available in 40 mic thickness or custom thickness for different load requirements
- Seals securely with good sealing strength to prevent leaks during handling
- Moisture resistant and anti-pollution to protect dry food products during storage
- Food-grade material suitable for direct contact with candy, cookies, chocolate, and spices
Published Data for BOPP/OPP Square Block Bottom Bag
Only values published on our own datasheets appear here. If a figure you need is missing, ask for it and we will confirm it in writing.
| Product | BOPP/OPP Square Block Bottom Bag |
|---|---|
| Material | BOPP/OPP/PP |
| Thickness | 40 mic or custom |
| Colour | Transparent |
| Usage | Candy, chocolate, cookies, biscuits, bakery, dry confectionery, cooking spices |
| Sealing | Good sealing property |
| Resistance | Moisture resistance, anti pollution |
Materials
- BOPP or OPP film with food-grade certification for direct contact with dry food items
- PP film available as an alternative for specific applications
- No recycled content in the film; material is virgin and suitable for food packaging
How It Is Made
Film extrusion from virgin BOPP or OPP resin
Orientation and stretching to improve strength and clarity
Cutting and forming into square block bottom bag shape
Sealing the bottom and side seams to create a stable base
Final inspection for seal integrity and visual defects before packing
How It Is Checked
Incoming BOPP/OPP/PP resin checked for purity and food-grade compliance
Seal strength tested on sample bags to ensure no splitting during handling
Visual inspection of each bag for clarity, thickness uniformity, and seam quality
Sample bags filled with dry product and tested for moisture resistance
Final pack checked at container loading against the packing list
Customisation Options
- Custom thickness available upon request, starting from 40 mic
- Custom bag size and shape for specific product dimensions
- Logo or brand printing on the bag surface using inline printing
- Different film types (BOPP, OPP, PP) selected based on performance needs
How It Compares With the Alternatives
Where another material is the better answer we say so, because a returned shipment costs more than a lost order.
| Flexible stand-up pouch with gusset | Block bottom bag has a simpler, flatter base and lower material cost, though it offers less volume for the same footprint |
|---|---|
| Plain flat-bottom bag without square block | Square block bottom provides better stability and upright standing, reducing tipping during transport |
| Paper bag with plastic liner | BOPP/OPP bag offers better moisture resistance and clearer product visibility than paper |
| Polyethylene (PE) bag | BOPP/OPP has higher clarity and stiffness, making it better for shelf presentation and handling |
How to Use It
Ensure the bag is clean and dry before filling to maintain seal integrity
Fill the bag with product, leaving space at the top for sealing
Close the bag using a heat sealer or sealing machine at the required temperature
Store filled bags in a cool, dry place away from direct sunlight to prevent film degradation
Use only for dry, non-liquid products to avoid seal failure from moisture
BOPP/OPP Square Block Bottom Bag in Detail
Photographs of the actual product as supplied, not renders.
BOPP/OPP Square Block Bottom Bag Questions
What is the minimum order quantity for BOPP/OPP square block bottom bags
The minimum order quantity depends on size, thickness, and film type. Send your required dimensions and monthly volume via WhatsApp and we will confirm the MOQ for your specification.
Can you make the bags in a thickness other than 40 mic
Yes, custom thickness is available. Please provide the required thickness and bag size for confirmation.
Are these bags food safe for direct contact with candy and chocolate
Yes, the BOPP/OPP film used is food-grade and safe for direct contact with dry confectionery, cookies, and spices.
Can you print our logo on the bags
Yes, we can print your logo on the bags using our in-house printing line. Send artwork and the bag width you need.
What film types are available
We supply BOPP, OPP, and PP films. The choice depends on clarity, stiffness, and moisture resistance needs. Let us know your application.
Other Plastic Bag Items
Same production line, different format. Compare before you settle the specification.
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Quote BOPP/OPP Square Block Bottom Bag for Your Next Shipment
Tell us the quantity, the destination port and the specification you need. We will confirm what runs, what is stock and what fits in a container.