An appropriate gap needs to be maintained between the pearl cotton and the product.

As a cushioning material, pearl cotton can provide better cushioning and protection by leaving an appropriate gap between it and the product. If there is not enough space between the pearl cotton and the product, the pearl cotton may not be able to fully exert its cushioning function and effectively absorb impact, thereby failing to protect the product from damage. In addition, appropriate gaps can also provide channels for air circulation, helping to dissipate heat and prevent moisture from the product. Therefore, when packaging products, the appropriate gap size should be selected based on the characteristics of the product and the thickness of the pearl cotton.