Packaging and reinforcement of honeycomb paperboards before transportation is the basis for preventing damage from squeezing. For single or small quantities of honeycomb paperboards, wrapping film can be used to fully wrap the paperboard, using the tension of the film to compact and fix the paperboard to reduce the shaking space during transportation. If the paperboards are stacked, cardboard or plastic partitions need to be placed between each layer to avoid edge wear caused by friction between layers. At the same time, a custom-sized cardboard tube or wooden frame is placed on the outside of the whole, and the gap between the frame and the paperboard is filled with cushioning material to form a rigid protective shell to resist the pressure caused by external squeezing. This packaging method can make honeycomb paperboards form a stable whole before transportation, reducing the risk of deformation of a single paperboard under stress.
The loading method of the transport vehicle directly affects the stress state of honeycomb paperboards. Avoid stacking heavy objects on top of honeycomb paperboards when loading. If other goods must be stacked, ensure that the honeycomb paperboards are at the bottom of the stack and the weight of the goods above is evenly distributed. If necessary, place a load-bearing board on top of the honeycomb paperboards to disperse the pressure from above to the entire board surface to prevent local excessive force from causing collapse. For long-distance transportation, honeycomb paperboards should be fixed to the inner wall of the carriage or a special bracket, and fixed horizontally and vertically with ropes or buckles. Soft pads should be placed at the contact point between the ropes and the paperboard to avoid local indentation or tearing when the ropes are tightened, and to ensure that the paperboard will not be displaced or collided due to vehicle bumps during transportation.
Reasonable planning of loading space can reduce the squeezing between honeycomb paperboards. Before loading, the loading layout should be designed according to the size and quantity of honeycomb paperboards, and try to leave a gap of 5-10 cm between the paperboards as a buffer area to avoid mutual squeezing caused by overfilling the carriage. Honeycomb paperboards of different thicknesses should be placed in different categories. Thicker paperboards can be placed upright, while thinner ones should be stacked flat. The stacking height should not exceed 1.5 meters to prevent the bottom paperboard from collapsing due to long-term heavy pressure. If the transportation space is limited, corrugated buffer boards should be inserted between the paperboards to use the elasticity of the buffer boards to absorb the impact during transportation and reduce direct collisions between paperboards.
Environmental control during transportation is also important for protecting the structure of honeycomb paperboards. Honeycomb paperboards should be avoided from being exposed to rain and snow. Moisture will reduce the strength and rigidity of the paperboard, making it easier to deform under compression. Therefore, the transportation vehicle needs to be equipped with rainproof tarpaulins, and waterproof mats should be laid on the bottom of the carriage to prevent moisture from penetrating the ground. In a high temperature environment, the glue in honeycomb paperboards may soften, affecting the bonding strength. In summer, it is necessary to choose a cool time to start the vehicle, or place an insulation board in the carriage to control the temperature below 30℃ to ensure that the stability of the paperboard structure is not affected by temperature changes.
Operational specifications during short-distance transportation can reduce collision damage. When carrying manually, avoid dragging with one corner or lifting with one hand. Two people are required to lift steadily from both sides to keep the cardboard vertical or horizontal to prevent bending caused by uneven force. When using mechanical tools such as forklifts, the forklift arm must be inserted from the entire width of the bottom of the cardboard to avoid inserting only one end to cause the cardboard to tilt and break. After lifting, it should be moved slowly to reduce the shaking caused by inertia. When placing, place it gently and keep a safe distance from other goods to prevent mechanical operation from causing damage to the edges and corners of the cardboard.
Dynamic protection during transportation can cope with sudden collisions. For high-value or fragile honeycomb paperboards, an inflatable cushioning bag can be added to the packaging. The gas in the bag can quickly absorb the impact force when a collision occurs, forming an elastic protective barrier. Paste anti-collision strips on the inner walls and corners of the transport vehicle. The soft texture of the anti-collision strips can reduce the direct collision between the cargo and the vehicle compartment. Especially when the vehicle starts, brakes or turns, it can effectively buffer the impact force caused by inertia of honeycomb paperboards and avoid structural damage to the corners. This dynamic protection measure can make up for the shortcomings of fixed loading and deal with various emergencies during transportation.
The meticulous operation of the unloading link is the last line of defense to protect honeycomb paperboards. When unloading, the order of "outside first, inside second, top first, bottom second" should be followed to avoid the overall stacking imbalance caused by extraction from the middle. When extracting a single cardboard, it is necessary to grasp both sides of the cardboard and apply force evenly to prevent the board surface from bending due to unilateral force. The appearance and structure of the honeycomb paperboards should be checked immediately after unloading. If the edges are slightly worn, they can be reinforced with tape in time; if there is obvious collapse or tearing, they need to be stored separately and evaluated whether they can be repaired to avoid further expansion of the damaged parts in subsequent processing. Through standardized unloading procedures, potential damage during transportation can be discovered in time and remedial measures can be taken to ensure that the performance of honeycomb paperboards is not affected.
