Shipping cost per order is one of the most important variables in e-commerce profitability, and it depends on two factors that packaging directly affects: weight and volume. Carriers charge based on dimensional weight when the package size exceeds a certain threshold relative to its actual weight. That means a package that is bulkier than necessary costs more to ship, even if the actual weight is low.
Plastic bubble wrap creates a shipping cost problem because it is bulky. The material contains trapped air, and the cushioning has to be thick enough to provide protection. That thickness increases the volume of the package, which triggers dimensional weight charges on parcels that would otherwise ship at a lower rate. The air inside the bubble wrap is essentially shipping cost that the retailer pays for.
Paper cushioning is lighter and conforms to product shapes, which means it can reduce package volume. The material is made of specialty kraft paper and has a three-dimensional structure that wraps around the product rather than sitting flat against it. That conformability allows the cushioning to fit more tightly inside the carton, which means the carton can be closer to the product size and the dimensional weight charge is reduced.
There is a weight dimension as well. Paper cushioning is lightweight relative to its protective capacity, and it does not add the bulk and weight that rigid protective materials do. For products that are already heavy, reducing packaging weight helps keep shipping costs under control. For products that are light but bulky, reducing packaging volume has a larger effect on shipping cost.
Aircosan manufactures paper bubble machines at its own facility in Foshan, Guangdong, and builds units up to 80cm wide. The machines produce cushioning from specialty kraft paper using mechanical embossing rollers, with no inflation, heating, sealing, or adhesive involved. The material is made entirely of paper and is compatible with existing paper recycling streams.
The shipping cost calculation is not simple, because it depends on the product mix, the carton sizes, and the carrier's dimensional weight formula. But the general principle holds. A packaging material that is lighter and less bulky reduces shipping cost per order, and that reduction accumulates across thousands of orders. For a retailer shipping a high volume of parcels, a small reduction in average package volume translates into a meaningful cost saving over a year.
The comparison to plastic bubble wrap is not always favorable. Plastic bubble wrap is lighter per unit of volume than paper cushioning, because the material is mostly air. But the volume that the material occupies is larger, and the dimensional weight charge is based on volume. The right comparison is not weight per cubic meter of material. It is shipping cost per order, and that depends on how the material is applied, how much space it occupies in the carton, and whether the carton size can be reduced.
For retailers, the shipping cost comparison should be part of the packaging evaluation. The material that protects the product at the lowest total cost is not always the material with the lowest unit price. Shipping cost is a significant component of the total cost, and it depends on packaging decisions that are made before the first order is shipped.