A cardboard shredder is only as good as the paper it processes. The machine can be well built, the operator can be skilled, and the maintenance can be perfect, but if the paper roll is wrong, the output will be wrong. This article focuses on one thing only: what determines whether a paper roll works in a cardboard shredder, and how to judge a roll before feeding it into the machine.
The first factor is grammage, which is the weight of the paper per unit area. Suitable paper for most machines is generally ≤80gsm. Paper that is heavier than this is harder to cut and expand, and it puts more load on the shaft and motor. Paper that is lighter produces output that is thinner and less protective. The grammage range exists because the machine is designed to work within it. Feeding paper outside the range is like driving a vehicle outside its rated load, it may work for a short time, but it wears the machine faster.
The second factor is moisture content. Paper absorbs moisture from the air, and damp paper behaves differently from dry paper. Damp paper cuts poorly because the fibers are softer and do not separate cleanly. It also produces output that does not hold its shape, because the moisture causes the material to compress rather than expand. In humid climates, paper rolls should be stored off the floor and away from condensation. In dry climates, moisture is less of a problem, but paper that has been stored near a leak or a damp wall can still be affected.
The third factor is the core. Paper rolls are wound around a core, and the core has to fit the machine's unwind mandrel. The standard core inner diameter for most machines is 75mm. A roll with a different core size will not fit, or it will fit loosely and cause the roll to wobble during unwinding. The maximum unwind diameter is also a factor. Most machines accept rolls up to 500mm in diameter. A roll that is larger will not fit in the machine, which means it has to be re-rolled or the machine has to be modified.
The fourth factor is the roll length. A standard roll is about 1700m, which is enough to produce a significant amount of cushioning material. The length matters because it determines how often the operator has to change the roll. A shorter roll means more frequent changes, which interrupts the packing flow. A longer roll means fewer changes, but it also means the roll is heavier and harder to load. The standard length is a compromise that works for most operations.
The fifth factor is the winding tension. Paper rolls are wound under tension, and the tension affects how the paper feeds. A roll that is wound too tightly can bind during unwinding, which causes the paper to tear or the feed to stall. A roll that is wound too loosely can telescope, which means the outer layers slide off the inner layers. Both problems affect output consistency. Rolls from established suppliers are usually wound to consistent tension, which is one reason the source matters.
The sixth factor is cleanliness. Paper that is clean produces clean output. Paper that has dust, debris, or contamination produces output that carries those particles. In operations where the output comes into contact with the product, cleanliness matters. The paper should be stored in a clean area and handled with clean hands or gloves during loading.
The seventh factor is storage. Paper absorbs odors, and paper stored near chemicals or strong-smelling materials can transfer those odors to the output. Paper stored in direct sunlight can fade or become brittle. Paper stored in a damp area absorbs moisture. The storage conditions determine how the paper performs when it reaches the machine, which is why storage is part of the paper selection process.
The eighth factor is consistency between rolls. Operations that process a lot of paper need consistent input, because the machine settings are set for one grammage and moisture content. If the next roll is different, the output changes. That consistency is one reason to buy from a supplier that controls its paper, rather than buying whatever is available at the lowest price. Aircosan machines are designed to work within a defined paper range, and the output is predictable when the input is consistent. 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#. A stable shaft handles paper within the range without producing inconsistent output.
Aircosan machines use overload protection: when a jam occurs, the machine automatically cuts power and stops, protecting the motor. Damp paper is more likely to cause jams, so the overload protection matters more when the paper is outside its ideal range. 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. 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 operator, the practical approach is to check the roll before loading it. Confirm the grammage is within range, check the core diameter, confirm the roll diameter is within the machine's limit, and inspect the paper for moisture or contamination. Those checks take a minute, and they prevent most output problems before they start.