The most effective change many businesses are making is shifting certain packaging from paper to plastic. While paper is the traditional choice for fresh loaves that need to breathe, it cannot deliver the crucial protection required for high-moisture, extended shelf-life, or speciality bakery products where staling and mould are primary concerns.

At UPAC, we see this strategic shift helping manufacturers reduce product loss, extend shelf life, and increase supply-chain efficiency across the bakery sector.

1. Better Moisture and Mould Protection

Paper absorbs moisture naturally, which is a major accelerator for staling and mould growth. This is particularly devastating for high-moisture bakery items like premium sourdough loaves or moist goods like muffins and artisanal rolls.

Plastic packaging, especially food-grade flexible films, offers a consistent barrier against moisture. Research shows that barrier films and flexible packaging help reduce spoilage by limiting exposure to oxygen, water vapour, and microbial contamination. This protective barrier can significantly reduce the number of products rejected in production or distribution due to visible mould growth.

2. Improved Shelf Life for Sourdough and Enriched Goods

Shelf-life extension is one of the clearest benefits of using plastic for bakery items. Studies indicate that vacuum-sealed or high-barrier plastic packaging can extend shelf life by up to 60% for certain products.

For a high-quality sourdough loaf, paper allows moisture to rapidly escape, causing the product to go stale (dry out) quickly. Using a sealed, plastic-based high-barrier film locks in the moisture and acidity—key characteristics of a high-quality sourdough—maintaining the bread’s texture and preventing staling for a significantly longer period. A longer shelf life means fewer expired products and fewer returns from retailers.

The shift from a paper bag or a simple cellulose-windowed paper bag to a resealable, high-barrier plastic bag or film is critical for sliced bread in the bakery sector. The paper format prioritises appearance over protection, leading to rapid moisture loss once the loaf is sliced. The plastic format, specifically designed for a controlled atmosphere, is the only way to effectively prevent the staling that drives consumer waste of this popular item

3. Stronger Protection in Transport

Paper is more likely to tear, crush, or weaken when exposed to moisture, condensation, or heavy stacking, common in the transport and storage of bulk bakery goods. Damaged packaging often leads directly to perfectly edible products being discarded.

Plastic bags, liners, and films provide higher puncture resistance and durability. According to packaging-performance research, properly designed flexible packaging significantly reduces food losses in transport by maintaining product integrity across long distances. For high-volume manufacturers, even a 2–5% reduction in transport-based spoilage can deliver substantial annual savings.

4. Better Visibility and Consumer Information

Plastic packaging allows manufacturers to include: clear allergen labels, ingredient details, batch codes, and immediate visibility of the product itself.

Studies by RMIT University and the Fight Food Waste Cooperative Research Centre show that Australian consumers “waste 4 times more food than packaging,” highlighting the important role well-designed packaging plays in helping consumers store and use food correctly. Clear visibility helps consumers instantly assess the product’s quality, reducing the chance of discarding a product unnecessarily.

5. Reducing Food Waste Supports Sustainability

Reducing food waste is one of the most effective ways to improve environmental impact. The energy, water, transport, and labour behind wasted bread and bakery items far outweigh the environmental cost of the packaging that protects it.

Given that 70% of Australia’s food waste is considered edible, improving product protection is one of the fastest ways for the bakery industry to cut its overall environmental footprint. UPAC offers recyclable plastic options that maintain food protection while supporting responsible material choices.

Packaging Designed for the Product

Paper remains an excellent choice for many applications, particularly for fresh, crusty loaves intended for immediate consumption. However, for foods requiring moisture control, durability, and extended shelf life—especially high-value products like sourdough or moist cakes—plastic simply performs better. The key is choosing the right material for the right product.

If you are experiencing food-waste issues in the production or distribution of your bakery products, speak to the UPAC team. We can help you select the customised plastic packaging that protects your product and reduces waste.