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We manufacture our BulkSak brand of FIBC bulk bags both domestically and distribute FIBCs from reputable overseas manufacturers to meet the needs of the aggregate, agriculture, chemical, construction, food, fertilizer, rubber, aquaculture, pet food products and pharmaceuticals industries.

Regional Availability: Asia, EMEA, North America, South America & Mexico


Our manufacturing facility in the United States provides shorter lead times, smaller minimums  and improves supply chain management for our US-based clients. When super sack manufacturing is closer to the users, everyone benefits, even the environment!




Direct employees of Conitex Sonoco, our In-Country Managers perform on-site inspection and liaise directly with our overseas suppliers. These local managers are your best ally for continuity of supply.  They work hard to get you the best quality, pricing and lead times by working with the local vendors, speaking their language.

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As a manufacturer and supplier of FIBC bulk bags, we have a whole team of technical experts here to help. From our highly experienced technical sales managers to our in-house engineering staff, we perform on-site surveys to improve your production efficiencies and we can review your super sack design to optimize your FIBC for your specific application.  


We take on-time delivery and a consistent customer experience seriously. Whether you buy a standard stock super sack or create a custom order, you will always get top-notch service from our team.

Our customers receive automated delivery notifications right to their email inbox. 


"The bulk bags we purchase from Conitex are high quality and the customer service is always top notch. I've enjoyed a great relationship with my contacts from Conitex for several years now. Thanks for helping make my job much easier."

 - Michael Morgan
Supply Chain Planner, Starbucks

Bulk Bag Customization Options:

Our bulk bags are versatile!

Our in-house design team can also design a turnkey, custom FIBC for your specific process or business needs. Check out other customization options below.

  • Well-suited to high-speed filling applications
  • Various fill and discharge spouts
  • UN- or AIB-qualified production
  • Domestic or overseas super sack production
  • SWLs between 500 - 6,000 pounds
  • Barcode labeling for product tracking
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Loop Design Options

- Standard four point
- Stevedore strap
- Cargo strap
- Sleeve hemmed
- Cross corner loops
- Spread strap
- Single Loop

Other lift loop options include: made of polypropylene, multifilament, fibrillated, come in multiple colors

Top Design Option

- Standard fill spout
- Cone spout
- Full opening duffel
- Open top

Ties options include: polypropylene webbing, rope and velcro

Bag Style Options

- Circular bulk bag
- Four-panel bulk bag
- Baffled bulk bag
- Clover bag
- U-panel bulk bag
- Type C conductive
- Type D static dissipative

- Food grade bags

- Sand/Gravel bulk bags

- UN Certified bulk bags

Bulk Bag Fabric Options

- Made from 100% virign polyproylene resins
- Available in Type A, B, C, and D fabrics
- Include ultraviolet (UV) resistance
- Manufactured to meet standard 5:1 safety standards
- Meet FDA/food grade requirements (where applicable)
- Weighs between 3 - 9 ounces
- Available in various colors
- Standard coatings are 1.0 mil poly for moisture control and contamination production
- Coatings can be custom engineered to fit your needs

Learn more about our FICB fabric options here.

Bottom Design Options

- Spout bottom
- Flat bottom
- Tie-open bottom

Closures come in star/pedal/iris or string/pajama.

Ties come in polypropylene webbing, rope or velcro.

Bulk Bag Accessories

- Various inner liners (see our options here)
- Perimeter safety band
- Document pouches
- Various cord locks/ties
- Custom labels/tags
- Sift Proofing

Request-IconRequest Pricing
on Custom Bulk Bags



Complete this short form with information on the flexible packaging options you need, and our customer service representatives will give you a personalized quote. 

Stocked Bulk Bags

For your convenience, we currently have thousands of domestic manufactured BulkSak® bags in stock and ready to ship the same day!

View Stocked Inventory

Clearance Bulk Bags

These closeout options for flexible packaging allow you to fill your bulk bag needs at a savings. Click to view our available inventory, ready to ship domestically. 

View Clearance Inventory



Bulk Bags with Quality Assurance from Design to Delivery

We build superior value into every product, from our high-grade materials and craftsmanship to our quality assurance process. In-country sourcing managers oversee raw product sourcing and production for in-person quality control worldwide. Meanwhile, our customer service team works to ensure your requirements are matched to the proper bulk bag capabilities and specs.


Video: Common Product Dispersion Challenges During Bulk Bag Filling

Chris Wheeler, Sr. Material Science Engineer at Conitex Sonoco, guides you through identifying product dispersion challenges and common solutions. 

View More FIBC Topics

FIBC Domestic Manufacturing Brochure

BulkSak® USA brand has domestic design engineers, production capabilities and testing facilities to produce custom bags, built to your specs.

Read More

E-Book: Guide to FIBC Safety

We've compiled our resources into this free e-book including filling and discharge guidelines and bag features for optimal safety.

Read More

Are you using the right FIBC?

Does your FIBC have the right fabric weight, design features, inlet or closure? Download our brochure to get the right fit.

Read More


The AIB International certification is for food safety and grain-based production capabilities.

AIB International Certified Bulk Bags from Conitex Sonoco

BRC Global Standards' guarantee the standardization of quality, safety and operational criteria and ensure that manufacturers fulfill their legal obligations and provide protection for the end consumer.

BRC Global Standards Certified Bulk Bags from Conitex Sonoco

Customs Trade Partnership Against Terrorism (CTPAT) is but one layer in U.S. Customs and Border Protection’s (CBP) multi-layered cargo enforcement strategy. Through this program, CBP works with the trade community to strengthen international supply chains and improve United States border security.

C-TPAT Certified Bulk Bags from Conitex Sonoco

Once successfully benchmarked against GFSI's Benchmarking Requirements, food safety certification programmes (CPOs) achieve GFSI recognition, which lends a nameplate authority to these certifications and acts as a food safety passport of sorts throughout the global marketplace.


HACCP is a management system in which food safety is addressed through the analysis and control of biological, chemical, and physical hazards from raw material production, procurement and handling, to manufacturing, distribution and consumption of the finished product.

HACCP Certified Bulk Bags from Conitex Sonoco

The FSSC 22000 Food Safety System Certification provides a framework for effectively managing your organization's food safety responsibilities. FSSC 22000 is fully recognized by the Global Food Safety Initiative (GFSI) and is based on existing ISO Standards. It demonstrates your company has a robust Food Safety Management System in place that meets the requirements of your customers and consumers.

FSSC 22000 Certified Bulk Bags from Conitex Sonoco

ISO 9001:2015 sets out the criteria for a quality management system.

ISO 9001:2015 Certified Bulk Bags from Conitex Sonoco

OHSAS 18001 sets out the minimum requirements for occupational health and safety management best practice.

OHSAS 18001 Certified Bulk Bags from Conitex Sonoco