# FIBC Recycling and Reuse: Recycle, Reuse or Dispose of Bulk Bags

> FIBC recycling explained: woven PP bulk bags are #5 plastic and recyclable when clean. How to prepare bags, reuse 6:1 bags safely and dispose of the rest.

Published 2026-10-08 by Evergreen Packaging (Yantai Evergreen Packaging Co., Ltd.). Canonical: https://www.egpbags.com/blog/fibc-recycling-and-reuse/

**Key takeaways:** - FIBC bulk bags are **woven polypropylene, resin code 5**, and are recyclable when **clean, empty and separated from PE liners**. ;; They do **not** belong in household recycling; use an industrial bulk bag recycler or a supplier take-back scheme. ;; **Reuse** is only safe with **6:1 multi-trip** bags in a documented inspection program — never reuse a 5:1 bag for lifting. ;; Contaminated bags follow the waste rules for their **previous contents**.

FIBC bulk bags are made almost entirely of woven polypropylene (PP), resin identification code 5, so they can be recycled into new plastic products when they are clean, empty and separated from any polyethylene liner. Recycling goes through industrial bulk bag recyclers or supplier take-back programs, not household collection. Before recycling, the best option is often to buy fewer bags — by right-sizing them or by running a genuine 6:1 multi-trip reuse program — and the last resort is energy recovery or landfill.

This guide covers each option in order: reduce, reuse, recycle, recover, dispose. For background on the material itself, see [what is polypropylene](/blog/what-is-polypropylene/).

## Are plastic bags recyclable? What makes bulk bags different

"Are plastic bags recyclable?" has a different answer for each type of bag:

| Bag type | Material | Resin code | Typical recycling route |
|---|---|---|---|
| Thin carrier and produce bags | HDPE or LDPE film | 2 or 4 | Store drop-off film collection in some areas; usually not curbside |
| Woven sacks and FIBC bulk bags | Woven PP | 5 | Industrial recyclers, take-back schemes |
| Bulk bag liners | LDPE or LLDPE film | 4 | Film recyclers, if clean and separated |
| Paper-poly and BOPP laminated sacks | Paper plus PP or BOPP film | Mixed | Difficult; specialist routes only |

A bulk bag is a good recycling candidate because it is large, heavy (often 1.5–3 kg of PP per bag), and close to a single material: body fabric, coating, loops and usually the thread are all polypropylene. The problems are **contamination** (product residue), **mixed materials** (PE liners, paper labels, polyester thread) and **logistics** (collecting enough clean bags in one place).

## How is FIBC recycling done?

PP big bags recycling follows the same basic steps at most plants:

1. **Sorting** by color, type and previous contents; rejecting bags with hazardous residue.
2. **Shredding** into flakes or strips.
3. **Washing** to remove product residue, dust and paper.
4. **Drying.**
5. **Extrusion** — melting the flakes, filtering out solid contamination through a melt screen, and cutting the strand into pellets.

The recycled PP pellets go into injection-molded and extruded products such as pallets, crates, buckets, plant pots, construction products and automotive parts. Some is used in woven products that are not load-critical. Load-bearing FIBC fabric and loops are normally made from virgin PP, because recycled resin makes strength less predictable — and strength is what keeps a tonne of product off the floor. Our article on [how FIBC bulk bags are made](/blog/how-fibc-bulk-bags-are-made/) explains why tape quality matters.

### Why liners must come out first

Recyclers often separate plastics in water: PP (density about 0.90–0.91 g/cm³) floats, while heavier contaminants sink. Polyethylene (about 0.91–0.96 g/cm³) **also floats**, so a PE liner cannot easily be separated from PP in a float-sink tank and ends up mixed into the PP. That lowers the quality of the recycled resin. Pull liners out before baling; loose and tabbed liners make this easy, sewn-in and glued liners make it harder (see our [bulk bag liners guide](/blog/bulk-bag-liners-guide/)).

## How to prepare bulk bags for recycling

Recyclers set their own acceptance rules, but most want bags that are:

- **Empty.** Shake out or vacuum residue. Residue adds weight, cost and contamination.
- **Dry.** Wet bags grow mold and add weight.
- **Separated.** Liners, paper labels, cable ties, document pouches with paper inside and any metal removed.
- **Sorted.** By color (white or natural bags are the most valuable), and by previous product.
- **Baled.** Folded flat and compressed on a cardboard or plastic baler; loose bags are expensive to transport.
- **Documented.** A list of previous contents and safety data sheets, so the recycler can accept or reject the load.

Keep bales under cover. Sunlight continues to degrade PP that has no remaining UV stabilizer.

### Which bags are hard to recycle?

- **Bags with hazardous residue** (toxic, corrosive or oxidizing products) — these follow waste rules for the residue, not the bag.
- **Food and feed bags with sticky or fatty residue** — recyclable after washing, but some recyclers refuse them.
- **Type C conductive bags** — the conductive threads may be carbon-loaded or contain metal; ask the recycler.
- **Bags with glued or sewn-in liners** — the PE is hard to separate.
- **Heavily printed or dark bags** — still recyclable, but produce darker, lower-value pellets.

## What about bulk bag disposal?

If no recycling route is available, the remaining options are:

- **Energy recovery.** PP has a high heating value, roughly 44 MJ/kg, similar to fuel oil, so clean bags are a useful fuel for waste-to-energy plants and some cement kilns.
- **Landfill.** Legal in most places for non-hazardous bags but wasteful; PP does not biodegrade in any practical timeframe.
- **Never burn bags in the open.** Open burning releases smoke and pollutants and is illegal in many jurisdictions.

For bags that held hazardous materials, bulk bag disposal must follow the regulations for that waste stream, through a licensed waste contractor. Check the safety data sheet and local rules; do not send them to a general plastic recycler.

## Can bulk bags be reused?

Yes, but only within limits set by the bag's design. FIBC bulk bag reuse depends on the safety factor marked on the bag:

| Safety factor | Design intent | Reuse for lifting? |
|---|---|---|
| 5:1 | Single trip | **No.** Fill once, empty once. |
| 6:1 | Multi-trip | **Yes**, within a documented inspection and reconditioning program |

The 5:1 and 6:1 ratings come from the top-lift test in **ISO 21898**; our [safety factor guide](/blog/fibc-safety-factor-5-1-vs-6-1/) explains the testing. A 5:1 bag that looks perfect after one trip may still have abrasion, UV damage or seam stress you cannot see. Reusing it for lifting puts people under an unknown load.

### What makes a 6:1 multi-trip program work?

Reusable bulk bags save money and material only if the program is real:

- **Closed loop.** Bags travel between known sites and come back, ideally carrying the same product each trip.
- **Inspection every trip.** Check loops and loop stitching, all seams, fabric (cuts, holes, abrasion, UV fading or brittleness), spouts and closures, labels and the condition of the inside.
- **Cleaning.** Remove residue by shaking, air blowing or vacuuming; washing is possible but bags must be fully dried.
- **Reconditioning.** Replace liners, tie cords and labels; any bag with structural damage is retired, not repaired by the user.
- **Records.** Track each bag (by serial number or batch) and the number of trips. Retire bags at a set trip count or age, whichever comes first.
- **Same or compatible product.** Avoid cross-contamination, especially for food, feed and chemicals.

Our heavier constructions such as the [Industrial Grade PP FIBC Jumbo Bags 500-2000kg Durable](https://www.egpbags.com/products/fibc-bulk-bags/industrial-grade-pp-fibc-jumbo-bags-500-2000kg-durable-safety-factor/) can be specified at 6:1 for this kind of program. For outdoor storage between trips, specify UV-stabilized fabric such as our [Outdoor UV Stabilized FIBC Bag Weather Resistant](https://www.egpbags.com/products/fibc-bulk-bags/outdoor-uv-stabilized-fibc-bag-weather-resistant-for-gravel-long-term/).

### Reuse rules for UN and food grade bags

- **UN certified bulk bags** for dangerous goods are subject to transport regulations that restrict reuse; follow those rules and your dangerous-goods adviser, not general reuse guidance. See [types of FIBC bags](/blog/types-of-fibc-bags-type-a-b-c-d/).
- **Food grade bags** are generally single use unless a validated hygiene program says otherwise. See [food grade bulk bags](/blog/food-grade-bulk-bags/).

### What about reusing 5:1 bags without lifting?

A single-trip bag that is no longer lifted can still have a second life: as a ground-level collection container for light waste, as cut fabric for covers, or as a stationary storage bin that is emptied by hand. The rule is simple: once a 5:1 bag has made its trip, it should never again be suspended from its loops.

## How to reduce bulk bag waste before it starts

The most effective step comes before reuse or recycling: buy fewer and better-specified bags.

- **Right-size the bag** to the product's bulk density so you are not shipping half-empty bags (see our [bulk bag dimensions calculator](/blog/bulk-bag-sizes-dimensions-calculator/)).
- **Right-size the fabric** to the SWL; overbuilt bags use more resin than needed, underbuilt bags fail and are wasted with the product.
- **Use baffle bags** for light products, so fewer bags and containers move the same tonnage ([baffle bulk bags](/blog/baffle-bulk-bags-q-bags/)).
- **Design for recycling:** keep bags mono-material PP, use loose or tabbed liners, avoid glued paper labels and prefer light colors.

## Comparing the options

| Option | Requirements | Main benefit | Main limitation |
|---|---|---|---|
| Reuse (6:1) | Closed loop, inspection, records | Lowest cost per trip; least material | Needs returns logistics and discipline |
| Recycle | Clean, sorted, baled bags; recycler access | Material returns to new products | Collection and contamination |
| Energy recovery | Waste-to-energy or kiln access | Recovers energy | Material is lost |
| Landfill | Non-hazardous waste route | Simple | Wastes resin; costs rising in many regions |

## Buying bags that fit your reuse and recycling plans

EGP (Yantai Evergreen Packaging) manufactures woven PP bulk bags in Yantai, China, in single-trip 5:1 and multi-trip 6:1 constructions, with loose or tabbed liners and plain or printed fabric. If you are setting up a reuse program or want bags that are easier to recycle, [tell us how your bags circulate](/contact/) and we will recommend a construction — for example the cross-corner [Durable PP Woven FIBC Jumbo Bulk Bags 500-2000kg](https://www.egpbags.com/products/fibc-bulk-bags/durable-pp-woven-fibc-jumbo-bulk-bags-500-2000kg-capacity-cross/). Browse our [FIBC Bulk Bags](https://www.egpbags.com/products/fibc-bulk-bags/).

## Frequently asked questions

### Can bulk bags go in household recycling?
No. Household and curbside programs are not set up for woven PP bulk bags, and the bags can jam sorting equipment. Use an industrial bulk bag recycler, a waste contractor that handles plastics, or a supplier take-back scheme.

### What plastic number are bulk bags?
FIBC bulk bags are woven polypropylene, resin identification code 5 (PP). Their polyethylene liners are code 4 (LDPE) and should be removed and recycled separately where possible.

### How many times can a 6:1 bulk bag be reused?
There is no single number. It depends on the product, handling and storage, and on the inspection program that decides when a bag is retired. Programs set a maximum trip count or age and remove any bag that fails inspection earlier.

### Do bulk bag recyclers pay for used bags?
Sometimes. Clean, sorted, baled bags in light colors can have a positive value in some markets, while mixed or contaminated bags usually cost money to collect. Contact local recyclers with your volume, colors and previous contents for a quote.

### Can I reuse a 5:1 bulk bag if it looks undamaged?
Not for lifting. A 5:1 bag is designed and tested for a single trip, and damage from UV, abrasion and seam stress is often invisible. Retire it to recycling or a non-lifting use instead.

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Contact: doristeng2013@yt-evergreen.com · +86 186 6389 6305