Cardboard is one of the most recyclable materials in commercial use, and it is also one of the most commonly discarded. Understanding what happens when it is not recycled makes the case for processing it on site rather than sending it away.
The first destination is landfill. Cardboard in landfill decomposes, but slowly, because the conditions are anaerobic. Decomposition in that environment produces methane, which is a more potent greenhouse gas than carbon dioxide over a shorter timeframe. Modern landfill sites capture some of that gas, but capture rates vary, and the material itself is lost as a resource.
The second destination is incineration. Cardboard burns, and in waste-to-energy facilities that combustion produces electricity or heat. That is better than landfill in terms of volume, but it destroys a material that could have been reused several times before reaching that point. The energy recovered from burning cardboard is a fraction of the energy saved by reusing it.
The third destination is export. Some markets ship collected cardboard overseas for processing, which adds transport emissions and creates a dependency on facilities in other countries. This route has narrowed in recent years as importing countries tightened contamination standards, and it is no longer reliable as a destination for mixed or contaminated loads.
The fourth destination, and the one that is usually overlooked, is storage. Cardboard that has not been collected yet occupies floor space. In a warehouse, that space has a value, and the value is usually expressed as what could have been stored there instead. A baler or a cardboard pile takes up an area that could hold inventory, staging, or a packing bench. That area is not invoiced, which is why it rarely appears in the calculation.
The fifth destination is the alternative. Cardboard fed into a machine at the packing bench is converted into void fill or cushioning, and it goes back into an outbound shipment rather than leaving the building. Material is produced on demand at the pace of the line, which means no pre-production and no stockpile. What sits on the shelf instead is flat cardboard, which stacks compactly and arrives with shipments rather than as a separate delivery.
What determines whether that 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, and they work for wrapping and separating items in the same box. 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, which covers a mixed product range without requiring two purchases.
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 choice between discarding cardboard and processing it comes down to a comparison that most operations never make explicitly. One path costs money at collection and again at purchase. The other costs a one-time investment and the labour to operate it. Once the four destinations and the fifth alternative are laid out side by side, the arithmetic usually points in one direction.