PP foam sheet rigidity than polyethylene (PE), PP flexural modulus of about 1.52Gpa, PE only 207Mpa, similar chemical resistance and PE. Polypropylene, glass transition temperatures below room temperature, and impact resistance superior to PS, but also compared to the difficult recovery of the PS foam, polypropylene foam is an environmentally friendly material. Polypropylene has a higher heat distortion temperature, a high temperature can be applied in some fields. Foamed polypropylene resistant to high temperature is generally 130 ℃, and much higher than the maximum use temperature of the polyethylene foam 80 ℃. Closed-cell structure makes the thermal conductivity of moisture will not be affected, and therefore can be used as insulation material. Good low temperature properties: when the article even at -30 ℃ also showed good performance. Energy Absorption: As PP foam sheet product having a good energy absorption properties, has excellent energy-absorbing performance of the compression. Widely used in automobile bumpers energy processing systems and other anti-collision energy-absorbing components. Size and shape recovery stability: PP foam products will soon be restored many times in a row by the impact and flexural deformation original shape without permanent deformation.