Wrapping paper is a porous material composed primarily of plant fibers and additives; it is highly hydrophilic. Exposure to moisture causes the paper to deform; severe cases may result in mold growth, discoloration, and a loss of structural strength during storage.
Storage warehouses must be kept dry, with environmental humidity strictly controlled. When stacking, the paper should be elevated on dunnage (such as wooden bearers) at least 25mm off the floor and kept away from walls; adequate gaps should be left between pallets to ensure ventilation, and the stacked paper and pallets can be secured together with stretch wrap. Inventory should be inspected regularly-paying particular attention to the condition of the bottom pallets-and the "First-In, First-Out" (FIFO) principle should be followed to prevent deterioration caused by prolonged storage. Any paper remaining after slitting or printing should be promptly sealed with stretch wrap to prevent moisture absorption.
When transporting fragile items, crumpled wrapping paper can serve as void-fill material to prevent movement and surface scratches. Cartons made from this paper also require moisture protection; furthermore, due to their low ignition point, special fire safety precautions are necessary during storage. Cartons used for food packaging should not be reused, as this can lead to bacterial growth and compromise food safety.
