We use a standardized dynamic load test on a tensile testing machine. The specific tensile strength of the paper (measured in kN/m) is used for material selection. The assembled bag, specifically the reinforced handle attachment point (using the structural patch and high-shear adhesive), is subjected to a load that is typically 2.5 times the specified maximum fill weight. The handle system must withstand this force for a minimum duration without detachment or catastrophic material tearing, guaranteeing structural integrity.

The size and structural flatness of the bottom gusset directly correlates to the stability of the containers placed inside the bag. A sufficiently wide and rigid bottom gusset minimizes the rotational momentum and lateral shifting of food containers during transit, preventing them from tipping, spilling, or collapsing upon each other. This is a crucial design element that ensures the structural stability of the entire packaged meal, preventing catastrophic failure and maintaining food safety compliance.

The COF is measured to ensure efficiency in logistics. The outer surface typically requires a relatively low Static COF to facilitate easy sliding for bulk stacking on pallets, maximizing packing density and ease of manual handling. However, the surface must not be so slick that stacked bags slide off pallets. We calibrate the paper's inherent texture and any external coatings to maintain a measured COF range that balances stack stability with handling efficiency.