Inventory carrying cost is one of the most underestimated expenses in a packaging operation. It includes rent for the space, utilities, insurance, handling labor, and the opportunity cost of cash tied up in stock. Most operations track the purchase price of packaging material and miss the carrying cost entirely, which is why they underestimate how much a shredder actually saves. Understanding what carrying cost includes, and how on-demand production reduces it, is what turns a hidden expense into a visible saving.
Start with what carrying cost includes. There are five components. The first is space cost, which is rent or mortgage allocated to the area where material is stored. The second is utilities, which covers heating, cooling, and lighting for that space. The third is insurance, which covers the value of the stored material. The fourth is handling labor, which is the time spent receiving, moving, and organizing stock. The fifth is the opportunity cost of cash tied up in inventory, which is what that money could earn if it were used elsewhere. Adding these five components gives the true cost of holding packaging material in stock.
The first way a shredder reduces carrying cost is by consolidating material types. Operations that stock bubble wrap, air pillows, foam inserts, and paper padding have four separate inventory items, each with its own space, its own handling routine, and its own risk of obsolescence. A shredder replaces most of that with a single input: paper rolls. The number of inventory items drops, which reduces handling labor and simplifies space planning. Aircosan desktop models weigh between roughly 29kg and 45kg and can be positioned near the packing area. Industrial models range from around 140kg to 715kg and stay in one place. Either way, the machine occupies about one square meter, which is often less than the space freed by consolidating filler storage.
The second way a shredder reduces carrying cost is by reducing buffer stock. Purchased filler arrives in batches, and batches require buffer stock. Operations hold extra material because running out during a busy period is worse than storing extra. On-demand production from paper rolls reduces the need for buffer stock, because material is produced as needed. The paper rolls themselves still take space, but they are a single material type, and the total volume is usually lower than the equivalent purchased filler.
The third way a shredder reduces carrying cost is by reducing obsolescence. Purchased filler has a practical shelf life even if it does not expire. Bags get damaged. Rolls get crushed. Boxes get opened and partially used. Over time, some percentage of purchased filler becomes waste without ever being used. On-demand production eliminates that category, because material is produced in the quantity needed rather than in the quantity purchased.
The fourth way a shredder reduces carrying cost is by shifting the input supply. The input for a shredder is corrugated cardboard, which arrives with incoming goods. That cardboard is already on site, and it has already been paid for as part of the goods. It sits in a corner or a bin rather than on a shelf. When the machine processes it, the material moves directly into outgoing orders. This shifts the inventory model from holding purchased filler to processing existing cardboard, which reduces the amount of material held in stock at any given time.
The fifth consideration is the space value. Warehouse space has a cost, and freeing space has a value even if it is not directly invoiced. Some operations use freed space for additional inventory, which supports growth without relocation. Others use it to improve workflow, which supports throughput. Either way, the space savings contribute to the return on investment alongside the material savings. Waste cardboard disposal is a hard cost in many countries, with fines for improper disposal and no payment for material delivered to collection points. Buying paper filler, air cushions, and foam is a recurring cost. A machine that turns existing boxes into packaging material addresses both at once, and the output is biodegradable packaging and degradable packing material, a practical alternative of plastic packing materials.
The sixth consideration is machine selection for operations focused on carrying cost. Desktop models cover 350mm, 450mm, and 550mm cutting widths at 10 m/min and up to 10mm thickness, with a ZD brand geared motor rated for 8 to 10 hours of continuous work. These are the right choice for operations with limited space because they can sit beside the packing bench rather than in a dedicated storage area. Industrial models start at 550mm and reach 900mm and 1200mm, with cutting thickness up to 15mm or 20mm and speeds up to 18 m/min with variable frequency control. The 1200mm model matters for operations handling wide cartons, because it removes a pre-cutting step from every box. Producing shafts above 500mm is a genuine technical barrier, and Aircosan produces 550mm desktop shafts stably while reaching 1200mm on floor-standing models, a width essentially no peer on the market produces.
The seventh consideration is output type, because different outputs take different amounts of storage space. Mesh output is bulkier because it expands into a three-dimensional structure, which means the same weight of material takes more volume. Strip output is denser and more compact, which means it takes less space. For operations with limited storage, strip output has an advantage. Some machines cover both. The P50-X uses two sets of cutter shafts to produce honeycomb mesh and strips at the same time. The P50-3 shreds a 550mm board into three equal pieces in one pass, with customizable cut width and quantity, and this function can be applied across the entire Aircosan range.
The eighth consideration is the cutter shaft, because a machine that breaks down does not reduce carrying cost. Aircosan shafts are large, one-piece units rather than thin blades, designed for a service life of over five years and processed through lathe machining, high-frequency treatment, quenching, blackening, and multiple other steps. The material is 40Cr rather than ordinary 45# steel. 40Cr has lower brittleness and stronger impact resistance, and its machining time is more than twice that of 45#. At the same 550mm width, Aircosan shafts are visibly larger and thicker than thinner competing units and cost about 30% more, which shows in the overall machine weight. Some suppliers use thinner shafts that deform or break above 7mm, and downtime forces the operation back to purchased filler, which restores the carrying cost the machine was supposed to reduce.
The ninth consideration is the regulatory backdrop, because it affects inventory planning. On August 12, 2026, the core provisions of the EU Packaging and Packaging Waste Regulation fully entered into force, replacing a directive in use for nearly 30 years. Plastic bans are spreading, and for operations still using large amounts of plastic filler, switching to paper-based cushioning is a question of when rather than whether. Operations that make the switch early reduce their inventory of regulated materials before those materials become a compliance risk.
Aircosan machines have side sheet metal that fits tightly with no gaps, so paper dust cannot enter the gears and cause abnormal noise or long-term wear. They use a branded motor with ample power, so thick and hard cardboard feeds smoothly. Overload protection automatically cuts power and stops the machine when a jam occurs, protecting the motor. Aircosan runs its own parts processing factory, controlling part quality in-house rather than assembling from mixed outside sources. The company supports logo customization from one piece and color customization from ten pieces. Products carry CE, ROHS, and UKCA certifications and hold an exclusive EU patent. After-sales responds within 12 hours and connects customers directly with engineers.
For an operation reducing storage cost, the practical approach is to calculate the carrying cost of current packaging material stock, estimate the carrying cost of a single paper roll system, and compare the two. The difference is usually larger than expected because carrying cost includes components that are rarely tracked. Once those numbers are on paper, the storage saving becomes a reported figure rather than an assumption.