Settsu Carton (Japan): Low-Temperature Resistant and High-Strength Corrugated Paper Shelf Technology, Breaking Free from

Core Technological Innovation: To meet the display needs of frozen foods, a dedicated paper shelf that maintains structural stability at -20℃ has been developed, breaking the bottleneck of traditional paper shelves being prone to embrittlement at low temperatures. Adopting LB210×MA180×LB210 AF composite corrugated material and an original "frontal edge structure" design, the upper flip cover is folded and embedded into the bottom, which not only enhances the load-bearing capacity of the opening but also prevents deformation under pressure during stacking. Tests show it can meet the requirement of 7-layer stacking, with a static load-bearing capacity of 18kg and a compressive strength of 3188N (safety factor 5 times).

Meanwhile, the assembly process is optimized. Compared with traditional fully die-cut combined boxes, the assembly time is reduced by 50%, enabling quick forming without tools. The surface waterproof coating meets Japanese food contact safety standards, preventing structural damage caused by low-temperature condensation.