Is composite packaging bag suitable for pet food packaging?

Ⅰ.Highly Suitable Pet Food Types and Core Advantages

• Freeze-dried food, jerky/fish treats (oil-resistant and puncture-resistant required): use PET/NY/PE composite material, utilizing the puncture resistance of polyamide (NY) to prevent oil penetration
• Wet food, cat strips and other liquid food (high barrier and fresh-keeping required): adopt PET/AL/PE four-layer composite structure, the aluminum foil layer can block oxygen and ultraviolet rays, extending the shelf life by more than 30%
• Small-sized dry food trial packs (lightweight and sealable required): use lightweight PET/PE composite bags, with a zipper design for resealing

• Composite materials can combine functions (barrier, puncture resistance, moisture resistance) on demand, with wider adaptability than single-material packaging
• Self-standing composite bags improve shelf display effect, meeting the needs of brand marketing
• Some bio-based composite materials (such as PLA/PE) comply with the environmental protection trend, satisfying the demand of 60% of consumers who are willing to pay an environmental premium

Ⅱ.Unsuitable Scenarios and Scientific Alternatives

• Large-sized staple food (≥10kg): ordinary composite bags have insufficient load-bearing capacity and are prone to damage during long-term stacking
• Treats with sharp bones: conventional composite bags are easy to be punctured, leading to leakage
• Products requiring high-temperature sterilization: some composite materials (such as ordinary PE composite layer) have insufficient heat resistance, and the sealing performance is prone to failure

• For large-sized staple food: use thickened kraft paper/PE/PA composite bags to enhance load-bearing and stacking performance
• For treats with sharp bones: use PET/AL/RCPP high puncture-resistant composite bags, with explosion-proof edge technology
• For products requiring high-temperature sterilization: prioritize PET/AL/RCPP high-temperature resistant composite materials to ensure good sealing after sterilization

Ⅳ.Practical Optimization: Material Selection, Compliance Requirements and Design Details

• Match the composite structure according to food characteristics (PET/NY/PE for dry food, PET/AL/PE for wet food)
• Prioritize materials containing PCR recycled materials (30%-50% proportion) or compostable materials, in line with ISCC PLUS sustainability certification requirements
• Provide SGS test reports to ensure that heavy metal migration meets the standards (lead ≤100mg/kg, cadmium ≤2.0mg/kg)

• Equip with a dual design of zipper + easy-tear opening, balancing sealing performance and convenience
• Add a one-way exhaust valve to freeze-dried Food Packaging to avoid bag expansion during transportation
• Use an eight-Side Sealing structure for large-sized packaging to improve load-bearing capacity and stability

• Comply with China's GB4806 food contact material standards and relevant EU regulations, clearly mark material composition and recycling labels
• Avoid using composite materials containing bisphenol A (BPA) to reduce the risk of sensitization