Bulk Bags

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What are Bulk Bags?

Bulk bags are bags that are made from woven polypropylene plastic. They can be loaded with between 2,000-5,000 lbs. of material.

We manufacture both the woven polypropylene fabric and polyethylene liners for all the bulk bags we sell at Custom Packaging Products. The fabric is used to make numerous different specifications of bulk bags for our customers. The polypropylene liners are for bags where moisture sensitive products are being loaded.

Due to the labor-intensive process of producing the bags, virtually all are made overseas in Asia. With over 500 million bags used worldwide, this equates to numerous bags that must be manually sewn and processed.

This is conducive to manufacturing in low-cost labor regions of the world, as it keeps the costs of the bulk bags low.

Same day shipping is available with most of our bags we stock.

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Agriculture Bags

We have many bags both new and used which are perfect for the agricultural product market. We can provide fertilizer bags, vented potato bags, mesh top bags, etc.

Chemical Bags

We are a custom chemical packaging company and we supply some of the biggest PVC bag resin manufacturers with high quality bags to match their requirements.

Construction Bags

This bucket will allow you to load FIBC bulk bags quickly even on remote sites, it only takes one person to load bulk construction bags quickly.

Food Grade Bags

AIB International Consolidated Standards for Food Contact Packaging Facilities Programmes Certification to Produce Food Grade Bulk Bags.

Mining Bags

Whether you are mining attapulgite, bauxite, colemanite, magnesium, silica, iron oxide, or frac sand, we can work with you to supply the best quality bag for a competitive price.

Pharmaceutical Bags

If you are a pharmaceutical company and are looking into replacing current polypropylene bulk bags or have a project to move to bulk bags, we can help you through the process.

Bulk Bag Suppliers

Bulk bags are a necessary part of many businesses, so it’s important to find a supplier that you can trust.

When you’re looking for a bulk bag supplier, be sure to ask about their experience, products, and shipping options. This will help you make the best decision for your business.

If you’re looking for an immediate quote reach out to us today!

Bulk Polypropylene Bags

Bulk polypropylene bags are sacks made of strong and durable polypropylene fabric.

Nowadays, bulk polypropylene bags are usually used to store or transport food. However, they can also be used for other purposes, such as storing clothes or other materials.

Polypropylene is a type of plastic that is durable and resistant to chemicals. It is also lightweight, making it easy to transport. Bulk polypropylene bags are often used in industrial settings because they can hold a large amount of material. They are also often used in the medical field to store medical supplies.

There are many different types of bulk polypropylene bags, such as those with a zipper closure or those that are heat-sealed. They come in a variety of sizes, depending on the needs of the user.

Flexible Intermediate Bulk Containers

FIBC (Flexible Intermediate Bulk Container) bulk bags are a type of container made of flexible fabric that is used for storing and transporting granulated products. They are also known as flexitank, big bag, ton bag, jumbo bag, or bulk bag.

The main advantage of using FIBCs is that they are much lighter than traditional containers such as wooden crates or metal drums, and thus can be more easily transported. They are also collapsible, which makes them more space-efficient.

FIBCs are usually made from woven polypropylene or polyethylene fabric, and have a capacity of anywhere from 500 to 4,000 liters (132 to 1,056 US gallons). The fabric is typically reinforced with metal or plastic hoops or rods to keep its shape.

The bottom of the bag is often fitted with a discharge spout, which allows the contents to be emptied more easily. The top of the bag may also have a closure device, such as a drawstring cord, to keep the contents from spilling out.

FIBCs are used for a variety of applications, including the storage and transport of food, chemicals, pharmaceuticals, and construction materials such as cement or sand. They are also commonly used for disaster relief efforts, as they can be quickly filled with supplies and transported to areas in need.

Type C Bags

We offer Type C bags which are made with conductive threads to allow you to properly ground the bag to eliminate the chance of a static charge which could result in an explosion. Any product that has been deemed explosive should always be electrically grounded.

Heavy-Duty Bulk Bags

Heavy-duty bags are perfect for storing and transporting heavy items. They are made of sturdy material that can handle a lot of weight, and they have straps or handles that make them easy to carry. These bags are perfect for transporting sand, gravel, dirt, or other heavy materials. They are also great for storing tools or equipment in a garage or shed.

1 Ton Bulk Bags

From time to time you may hear bulk bags referred to as “1-ton bags”.

These sacks are typically made of the same material as a standard bag, the term is just used interchangeably depending on where you’re located.

They got the name “1-ton” because of their ability to safely store up to 2000 lbs of product.

Consequently, they’re a great choice for industrial companies that need a safe & secure packaging option.

Bulk Bags With Handles

All bulk bags have “handles”, which are technically called lift loops.

This is so that forklifts can safely pick up the bag & transport it to the desired location.

The straps or handles make it easy to hold onto the bag, and the sturdy material ensures that the contents will not spill out.

Another reason why they’re a great choice for companies that need to move a lot of heavy material.

Why Use Custom Bulk Bags (FIBCs)?

There are many things to consider when you are trying to design a custom bag. You must consider the weight of the product, the loading and unloading methods, shipping methods, sifting potential, and density.

Once all the variables which determine what type of bulk bag is needed are understood, then the design can be completed. Some companies will buy a bag from the current inventory of a bulk bag distributor and begin loading their products.

Many times, there will be bridging problems where the product does not flow well enough to go into the spout size of the bag. Other problems are related to the bags not filling up enough or too much.

All of these are both production and safety issues (see FIBCA for more information). A bulk bag that does not unload, or load properly can slow down the production of the plant and be a safety hazard to the employee doing the work.

Furthermore, bags that are not filled properly will not stack properly and could tip over causing an injury.

Although, with a proper design, all these problems can easily be avoided.

How are Bulk Bags Manufactured?

Below is a step-by-step view of our manufacturing process. Quality and Safety are our number one priority! Our clean rooms are some of the best in the world, and we are in the top five companies actively producing bulk bags.

Step 1: Polypropylene resin is heated up to a melting point and any additives needed such are UVI, Color, etc. are added during this process.

Step 2: Extrusion is the next step and sheets of polypropylene are produced and then cut into small strips of yarn to be used for weaving the fabric.

Step 3: Weaving is the next step and is done by taking the yarn and weaving it into a circular fabric using looms.

Step 4: Optional coating is the next step and not all bags will have a coating applied. This is only if the bag will be utilized for a powdery product where the product could sift through the fabric. This step applies another coat of polypropylene to the product to close off any imperfections in the weave.

Step 5: Cutting is the next step, and this is where the fabric will be cut to size according to the specification of the bags being manufactured. Most manufacturers are heat-cutting the fabric to ensure there is no fraying when cutting.

Step 6: Sewing is when the fabric is gathered to make the actual bulk bag. This is a manual process, and it is very time-consuming.

Step 7: Pre-Shipping is where the bags are complete and will be blown out to remove any remnants of thread or any other foreign materials. They will also be inspected one last time for any imperfections. Then, they will be highly compressed and loaded onto a pallet for shipping.

Step 8: Shipping is where the bags are loaded into the container for shipping overseas to the respective customer.

For a more detailed view of how this whole process works, go to our Bulk Bag Manufacturing page for more information.

Bulk Bags vs. Gaylord Boxes

Here are some of the advantages a bulk bag has over a Gaylord box for unloading and shipping dry products:

Easier to unload with spout bottoms
Less tare weight to reduce shipping weight on containers
Easier to recycle
FIBC Bags can hold more weight per footprint
Less footprint in the warehouse for empty bags
FIBC Bags can be UN certified to ship hazardous goods across the world
Can be certified to ship both food grade and pharmaceutical grade products
Safer for employees to lift lightweight bags vs. handling heavy corrugated containers

Food Grade Bulk Bags

Food grade bulk bags are specially designed to safely contain food products. These bags are made with the highest standards of quality control, following ISO processes to ensure that they meet safety requirements for food products. Food grade bags use materials that don’t react with food, making them safe for food storage and transportation.

FIBC Bulk Bags

We offer a Flexible Intermediate Bulk Containers (FIBC) bag that is a UN certified bulk bag to enable most hazardous materials to be shipped while staying within the regulations. In addition, we sell a food grade bulk bag that is acceptable to load food materials for transport. Also, we able to make a bulk bag which will hold flammable powders while also reducing the bridging that takes place while loading the bag. A UN certification is needed to safely transport flammable powders, so make sure you are following all regulations.

How are Bulk Bags Used in Different Industries?

Bulk bags are used in many ways throughout different industries to accomplish loading, processing, and shipping goals. For example, some food processing facilities use bags to batch up products such as flour mixes, protein powder, etc. This allows the processor to mix up batches for certain customers separately and store them safely away from other products. A lot of contract packaging companies rely on these bags to help them store many different products side by side in the same warehouse without risk of any cross-contamination.

Other companies use the bags to ship products to smaller customers who cannot accept large bulk loads. They may only need 4000-6000 lbs. and these bags allow for easy shipping of less than truckload volumes. Also, they can take one bag and load it into a silo with a forklift but would need much more equipment to load a truckload of product. Furthermore, some countries are not able to process bulk shipments, so these are more conducive to being unloaded with pallet jacks or forklifts.

Which Certifications are Needed for Food Grade and Pharmaceutical Grade Bags?

Depending on which country you will be accepting the final product in, the food and pharmaceutical grade safety restrictions are very different. However, many different organizations have been recognized by the Global Food Safety Initiative (GFSI). The four who have been recognized are:

These organizations will do safety audits to certify the manufacturing plant has met all the requirements to be able to safely manufacture bulk bags for food grade or pharmaceutical bags. They will look at safety mechanisms to ensure clean rooms will not introduce any foreign products whether dirt, metal, bugs, etc. Since the products being loaded into these bags will be food or pharmaceutical products that are ingested by humans, it is imperative to be as safe as possible.

*For more information, go to FIBCA*

Tips/Best Practices for Using Bulk Bags

There are both correct and wrong ways to work with bulk bags when filling, emptying, storing, and shipping in a safe manner.

Proper Way to Fill Bulk Bags

Make sure the bag is appropriate for the product and weight you will be loading
Ensure you have designed the bag with the correct bulk density in mind
Always secure the spout tightly before loading the product to control dust
Make sure to fill to the top to ensure safe stacking
Always inflate PE liners to allow better loading
Never fill more weight than the safe working load (SWL) dictates on your manufacture tag
Always start filling with the bag off the ground, so the product fills the bottom properly
Make sure the bag fills evenly throughout the load

How to Empty a Bulk Bag

Never stand under a bulk bag to untie the bottom spout
Always use an extended tool to untie the bottom spout
Never raise a bag that has been compromised to unload it
If liners are not tabbed, make sure to tie them off to keep them from getting pulled out of the bag during the discharge of the product.

Shipping Bulk Bags

Check for sharp edges on forklifts tines, cranes hooks, or bars.
Inspect for protruding nails or sharp edges on wooden pallets or use plastic pallets
Procure the correct pallet size so the bag does not hang over the edge of the pallet
Make sure the spout top or duffle top has been properly closed to prevent leakage
Use dunnage bags or strapping to secure the bags if shipping in an overseas container to reduce shifting or rubbing against each other which will cause damage to the bags
Check that your safe working load (SWL) has not be exceeded
Always ensure safety is your top priority

Storing Bulk Bags

Never stack bags more than two high unless you are using a pyramid stacking scheme
Keep bulk bags away from UV rays as usually there is only 1200 hrs. of protection. You could use a protective bag around the bulk bags but make sure they are not getting exposed to moisture.

FAQ

Most frequent questions and answers

How much weight do bulk bags hold?

Bulk bags can hold anywhere from 500 to 4,000 liters (132 to 1,056 US gallons) of material, depending on the size and design of the bag. They are typically made from woven polypropylene or polyethylene fabric, which is reinforced with metal or plastic hoops or rods to keep their shape. The bottom of the bag is often fitted with a discharge spout, which allows the contents to be emptied more easily.

What are the different types of bulk bags?

How do I choose the right bulk bag for my needs?

When choosing a bulk bag, you will need to consider a variety of factors, such as the type of material you will be storing in the bag, the weight of the material, and the size of the bag. You will also need to decide if you need a bag with a discharge spout or a closure device, such as a drawstring cord.

When is it safe to use used bulk bags?

There is no definitive answer to this question, as the safety of using used bulk bags depends on a variety of factors, such as the type of material the bag was originally used to store and the condition of the bag. It is generally recommended that used bulk bags be inspected for damage or signs of wear before being used. If any damage is found, the bag should not be used.

What is the difference between new & used bulk bags?

The main difference between new and used bulk bags is the condition of the bag. New bulk bags are typically unused and in good condition. Used bulk bags may have been used to store a variety of materials, and may be damaged or worn. It is important to inspect a used bag before using it to store material, as some damage may not be visible.

How should I store bulk bags?

Bulk bags should be stored in a cool, dry place. They should also be stored away from direct sunlight and any heat sources, as this can cause the material to break down over time. Bulk bags should not be stored near any chemicals or corrosive materials, as this could damage the bag. is important to inspect a used bag before using it to store material, as some damage may not be visible.

How do you safely unload bulk bags?

There are a few different ways to safely unload bulk bags. One option is to use a forklift or other piece of machinery to lift the bag and empty it. Another option is to cut the bottom of the bag open and let the material pour out. A third option is to use a discharge spout on the bottom of the bag to empty the contents.

How often should bulk bags be replaced?

The frequency with which bulk bags need to be replaced depends on a variety of factors, such as the type of bag, the material it is made from, and how it is used. In general, however, most bulk bags will last for several years before needing to be replaced.

Call Us For Questions Or More Info

Through our experience working with numerous companies in many industries, we have seen it all and can help you stay away from many of the obvious problems. We only work with the best manufacturers overseas, and we continually audit them in person. In addition, our plants are audited by both our pharmaceutical and food grade customers as well on a regular basis. As always, we are always happy to visit your plant to discuss any issues you may have with your bulk bags.

Free Bulk Bag Consultation

We know some companies struggle with getting the correct bulk bags to ensure both unloading and loading products, so we are offering to come out free of charge to your location and help with any problems you may be encountering. Just call us to schedule the visit.