Single Wall

Single Wall is a professional term in corrugated cardboard packaging, referring to a three-layer structure consisting of one layer of corrugated medium (fluted) sandwiched and glued between two layers of containerboard (linerboard). Its thickness is typically 3-5 mm, and it features low cost, light weight, and moderate cushioning performance. It is widely used for transport packaging of small to medium-sized, light to medium-weight products, such as electronics, consumer goods, and food. Usage scenarios include export carton specification descriptions, packaging material procurement, and logistics cost calculation. Note: Single Wall has lower load-bearing and compression strength than Double Wall and Triple Wall, so it is not suitable for long-distance transport of heavy or fragile goods; its strength decreases in humid environments, requiring moisture-proof treatment. The difference from Double Wall lies in the number of corrugated layers: Single Wall has only one corrugated layer, while Double Wall has two corrugated layers with a partition paper in between, offering greater total thickness and strength. In foreign trade contracts, the corrugated type, grammage, and burst strength should be clearly specified to avoid cargo damage or claims due to packaging non-compliance.