Performance Data

1. Superior Puncture Resistance

• Verdict: PASSED.
• The Data: In independent testing, Compostar reinforced paper resisted piercing from 1kg of sharp organic waste (including chicken bones and seafood shells). In contrast, standard compostable film liners were easily pierced by the same material.
• Why it matters: This makes our bags the safest choice for heavy kitchen scraps and outdoor waste management.

2. 10kg Industrial Static Load Limit

• Verdict: 10kg+ Capacity.
• The Data: Tested with a 10kg solid iron dumbbell, Compostar bags maintained 100% structural integrity with zero handle failure or base ripping. Standard bio-plastic liners typically fail or sag significantly at only 3-5kg.
• Why it matters: Engineered for high-volume organic waste from large gatherings, BBQs, and commercial use.

3. Verified 72-Hour Liquid Retention

• Verdict: Zero Seepage.
• The Data: After holding 500ml of liquid for 72 consecutive hours, the Compostar waterproof barrier showed no leakage. Standard film liners often "sweat" and allow moisture to permeate through (the "bin juice" effect) within 12-24 hours.
• Why it matters: Keeps your kitchen caddy, car floor, or campsite completely dry.

4. Extreme Heat Stability (Up to 45°C)

• Verdict: Thermally Stable.
• The Data: Unlike PLA/PBAT bio-plastics that become tacky or lose tensile strength in the heat, Compostar’s paper technology remains stable in temperatures up to 45°C.
• Why it matters: Reliable performance in harsh Australian summer conditions for picnics and camping.

5. Reinforced Structural Integrity

• Verdict: Self-Standing Design.
• The Data: Our multi-layer paper maintains its 3D shape even when wet, allowing it to stand independently. Standard film bags frequently collapse and sag, making food waste disposal difficult and messy.
• Why it matters: Perfect for "stand-alone" use at campsites or on kitchen benches without a dedicated bin.

Standard green bioplastic bin liners act as a sealed trap for humidity, causing food scraps to rot anaerobically (which creates the "stink bomb" effect). Compostar kraft paper bags are highly breathable. Evaluated during household storage, the breathable fabric of paper allows for higher weight losses ranging between +29% and +44% compared to bioplastics. This natural moisture evaporation significantly reduces the "bin juice" and foul odours in your kitchen caddy.

Fruit flies and maggots are attracted to damp, rotting environments. Because Compostar paper bags evaporate up to 44% of moisture, they keep your organic waste significantly drier. This creates an aerobic storage environment that actively reduces the humid conditions that attract pests, keeping your kitchen fresh even on a 40°C day.

In our 10kg Strength Test, a single Compostar multi-layer paper bag is subjected to a vertical static load using a 10kg solid iron dumbbell. Under ambient temperature (22°C), the reinforced handles and base maintained 100% integrity with zero ripping. This ensures our bags can handle heavy food scraps from large gatherings or commercial kitchen use without failure.

We verified our waterproof barrier using 500ml of liquid (milk and water). The liquid was held in the bag for 72 consecutive hours at room temperature. The results showed zero seepage and no structural softening of the paper. Unlike film liners that allow moisture to permeate through (the "bin juice" effect), Compostar’s paper technology keeps the bin or caddy dry.

Yes. While bio-plastic liners (PLA/PBAT) can become "tacky" or lose tensile strength at temperatures exceeding 35°C, Compostar’s reinforced paper remains stable. Our bags have been tested to maintain performance in temperatures ranging from 20°C to 45°C, making them the most reliable choice for outdoor camping and picnics in the Australian heat.

Our Puncture Resistance Test involves dropping 1kg of sharp organic waste (including chicken bones and seafood shells) from a height of 30cm. The thickened, multi-layer paper wall prevents piercing—a critical advantage for hiking and camping where waste must be "packed out" securely without mess.