Grain & Chaff Storage: How to Choose the Right Chaff Bag for Shearing Season

When shearing season rolls around, the last thing you want is to be caught short on bags — or worse, using the wrong size and losing product to spillage or poor storage. Choosing the right chaff bag comes down to three key decisions: size, closure style, and material.

Here's a practical breakdown of our full chaff bag range to help you stock up correctly before the season starts.

Why Woven Polypropylene Chaff Bags?

Our chaff bags are manufactured from woven polypropylene (PP) — the modern replacement for traditional hessian. The advantages for agricultural use are significant:

• Breathability: The woven structure allows airflow, reducing moisture build-up and grain spoilage
• Strength: High tensile strength handles the weight of grain, chaff, and wool without splitting
• UV resistance: Holds up in outdoor storage conditions without degrading
• Consistent sizing: Uniform dimensions make stacking and palletising more efficient

Choosing the Right Size

Chaff bag sizing is typically expressed as width x length. The right size depends on your fill weight target and how the bags will be handled (manual vs. mechanical).

Standard Flat Chaff Bags

Flat bags are the traditional choice — simple, stackable, and easy to sew or tie closed after filling. Available in three sizes to suit different grain volumes:

• Chaff Bag — 65 x 112cm — ideal for lighter fills or smaller operations
• Chaff Bag — 67 x 118cm — a mid-range option balancing capacity and handleability
• Chaff Bag — 76 x 122cm — the largest standard flat bag, suited to high-volume grain storage

Gusseted Chaff Bags

Gusseted bags have an expanded base that allows them to stand upright when filled — a major advantage for mechanical filling operations and when stacking on pallets. The gusset adds volume without increasing the footprint.

• Gusseted Chaff Bag — (40cm + 36cm) x 112cm
• Gusseted Chaff Bag — (40cm + 36cm) x 122cm

Specialty Options

Red Stripe Chaff Bags

The red stripe variant is a popular choice for operations that need to differentiate bag contents at a glance — useful when storing multiple grain types or separating treated seed from feed grain.

• Chaff Bag Red Stripe — 76 x 122cm

Transparent Chaff Bags

Transparent bags allow you to visually inspect contents without opening the bag — ideal for quality control, retail display of grain or seed, or any application where visibility matters.

• Transparent Chaff Bag — 76 x 122cm

How Many Bags Do You Need?

A standard 76 x 122cm chaff bag holds approximately 25–30kg of grain when filled to a safe handling weight. For a 100-tonne harvest, you'd need approximately 3,500–4,000 bags. We offer bulk pricing for large orders — plan ahead and order before the season to avoid delays.

Also explore our bulk bags (FIBCs) for large-volume grain and commodity storage, or our full woven sacks range for all agricultural bagging needs.

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Need bulk quantities or advice on the right bag for your operation? Contact Pacific Packaging — we supply farms, co-ops, and rural businesses across Australia.