Packaging material spend is usually tracked as a single line. That line is the purchase cost, and it is the smallest of the costs that packaging creates. Understanding where the rest goes makes the comparison between options clearer.
The first component is the purchase cost, which is the one that appears on the invoice. Void fill, cushioning, wrapping material, and any other protective packaging that gets bought. This is the number operations know, and it is the one they compare when evaluating alternatives.
The second component is freight. Packaging adds weight and volume to every shipment, and couriers charge for both. Lighter packaging reduces freight cost, and the reduction applies to every parcel rather than once. Paper-based cushioning is lighter than the materials it replaces in most applications, and honeycomb paper is around 50% lighter than traditional cartons, which can cut transport costs by roughly 35%. For operations shipping at any volume, this component can exceed the purchase cost, and it rarely appears in the comparison.
The third component is storage. Purchased material occupies space from delivery to use, and in most operations that means a designated area holding pallets or sacks. That area is not productive. It holds material that will eventually be used, but it generates nothing while it sits there. The cost is the value of the space, expressed as what could have been stored or done there instead. This component does not appear on any invoice, which is why it is usually excluded.
The fourth component is labour. Receiving deliveries, moving pallets, retrieving material, and managing stock levels are all tasks that someone performs. They are rarely assigned, rarely measured, and rarely attributed to packaging. In an operation with a packing team, that cost is distributed across the team, and it competes directly with packing time. The way to estimate it is to follow a single order through the facility and time the steps that do not involve packing.
The fifth component is disposal. Packaging material becomes waste when the customer opens the box, but the operation's own disposal costs come from the cardboard it receives and does not use. Collection fees for cardboard and general waste, charged by weight or by bin. Where cardboard is converted into packaging material on site, this component reduces, because the volume leaving the building drops.
Adding those five components gives the total cost that packaging creates. In most mid-sized operations, the purchase cost is between a quarter and a third of it, and the remaining components are larger. That is why comparing options on purchase cost alone usually produces the wrong answer.
On-site processing addresses several components at once. Material that would have been purchased is produced from cardboard already on site, which reduces the first component. Material is produced on demand at the pace of the line, which means no pre-production and no stockpile, which reduces the third component. The handling steps associated with receiving, storing, and retrieving material reduce, which affects the fourth component. And cardboard that would have been collected is converted instead, which reduces the fifth.
What determines whether the conversion works is matching the machine to the material. Standard corrugated cardboard is suitable, including single-wall and some double-wall. Clean, dry cardboard works best because it expands evenly and keeps structural strength after processing. Light tape and labels are acceptable. Staples, metal inserts, and reinforcing materials should be removed before feeding, because they damage cutting components. Damp or heavily contaminated cardboard cuts poorly and wears the components faster.
Machine capacity determines how much of the stream can be absorbed. Bench units handle up to around 10mm thickness and run on standard 110V or 220V power. Mid-range floor-standing models handle 15mm. The wider models handle 20mm and process board that arrives as double or triple-wall without separating sheets first. Width matters for the same reason. If incoming cardboard regularly exceeds the machine's working width, every box needs preparation before feeding, and that preparation is labour that recurs daily.
Output type determines what the material replaces. Strips are dense and uniform and stay where they are placed, which suits void fill for light goods where the concern is movement rather than impact. Mesh expands into a three-dimensional structure that absorbs impact and conforms around irregular shapes, which suits fragile items and products that are not rectangular. Some machines produce both, selected by the operator.
Power configuration is worth confirming early. Bench units run on standard 110V or 220V. Some floor-standing models support single-phase and three-phase. The widest units are 380V three-phase only, and a site without three-phase cannot install those without electrical work.
The useful exercise is to write all five components on one page and compare the current arrangement against the alternative. Most operations find that the component they were optimising was the smallest one, and the largest one was not being tracked at all.