Hollow boxes are lightweight, environmentally friendly containers widely used in logistics, warehousing, packaging, and other fields. Their core material is hollow board (also known as hollow lattice board or corrugated board). Hollow boxes are typically made of polypropylene (PP), polyethylene (PE), and some modified materials. These materials give hollow boxes excellent properties, making them a key component of numerous packaging solutions.
Polypropylene (PP) hollow board is one of the most commonly used materials for hollow boxes. PP offers high strength, impact resistance, and chemical resistance, while also being lightweight, moisture-proof, and waterproof, making it suitable for packaging and transporting a wide range of industrial products. PP hollow boxes also have excellent heat resistance and maintain stability within a certain temperature range, making them suitable for applications requiring high-temperature resistance. Furthermore, PP is recyclable, meeting modern environmental standards and making it an ideal choice for sustainable packaging.
Polyethylene (PE) hollow board is another common hollow box material. PE offers excellent flexibility and strong impact resistance, making it particularly suitable for packaging applications requiring cushioning and protection. Compared to PP, PE's heat resistance is slightly inferior, but its flexibility and low-temperature resistance are superior, making it an excellent choice for cold environments or applications requiring shock absorption.
In addition to pure PP and PE materials, some hollow cardboard boxes also utilize modified hollow cardboard, such as those containing flame retardants, UV inhibitors, or reinforced fibers, to enhance their fire resistance, weather resistance, or structural strength. These modified materials further expand the application range of hollow cardboard boxes, enabling them to adapt to more demanding environments.
In summary, hollow cardboard boxes, primarily made of PP and PE, combined with various modification technologies, can meet diverse packaging needs while balancing environmental friendliness, durability, and cost-effectiveness, making them a valuable choice for modern logistics packaging.
