Physical property metrics for food packaging paper-such as basis weight, stiffness, and burst strength-represent a balanced design approach intended to meet the dual needs of food safety protection and logistics. Together, these parameters form a technical triad comprising barrier performance, mechanical strength, and ease of handling.
Consider the combination of a 45 g/m² basis weight and a 0.07 mm thickness: this thin yet high-density structure controls material costs while enhancing mechanical properties through the tight arrangement of fibers. An opacity level of 50% strikes a balance between light-blocking capabilities and visibility, while a stiffness rating of 70 mN ensures structural stability once the packaging is formed. The burst strength metric reflects the resistance of the sulfate-treated fiber network; this treatment enhances puncture resistance while maintaining the paper's flexibility.
The industry generally regards a basis weight of approximately 60 g/m² as the benchmark for general-purpose food packaging, as it supports printing ink without compromising foldability. Industrial-grade transport requirements-specifically regarding stacking stability-are reflected in specifications such as wooden pallet packaging and a load weight of 650 kg per pallet. The design philosophy emphasizing customizability stems from the food industry's diverse packaging needs, with requirements varying widely across products ranging from ready-to-eat meals to baked goods.