The core of making pet food packaging environmentally sustainable lies in transitioning from traditional multi-layer composite plastics to materials that are "monomaterial-recyclable" or "compostable under specific conditions." This shift aims to resolve the structural conflict between the need for high-barrier freshness preservation and the difficulty of recycling the packaging at the end of its life cycle.
1. Recyclability: Packaging should utilize recyclable materials to minimize environmental pollution. For instance, cardboard boxes should be made from recycled pulp.
2. Biodegradability: Certain packaging materials should possess biodegradable properties, allowing them to decompose in the natural environment and reduce "white pollution" (plastic waste). For example, the degradation rate of biodegradable plastics should be no less than 60%.
