We can expect that the development and application of PP three-layer materials will be of great significance to the development of China's polypropylene industry. But also very important, stationery, food packaging, packaging materials and environmental protection.

The basic conditions for manufacturing PP three-layer foam board with good structure. The advantage of recycling is that the inner layer (in contact with food) is suitable for FDA food grade PP materials, the middle layer uses recycled materials for foam, and the outer layer uses printable PP materials. This can save costs.