EPP material has light specific gravity, good energy absorption and recovery performance, shock resistance and compression resistance, and can be recycled. Therefore, since its inception in the 1990s, EPP foam material has quickly been widely used in the field of automobile manufacturing, becoming an energy absorption and shock absorption material New favorite. As a global leader in the field of EPP foam processing technology, Allenbach of Germany has developed a variety of EPP parts for vehicles in cooperation with many well-known automobile manufacturers around the world.

EPP foam material and its characteristics

Expanded polypropylene foam (English name: Expanded polypropylene, referred to as "EPP") is a foamed polypropylene composed of two phases, solid and gas, in the form of black, gray or white particles with a diameter The size is generally between φ2～7 mm. The outer wall of the EPP particle is closed, and the inside is filled with gas. Usually, the solid phase component only accounts for 2% to 10% of the total weight, and the rest is gas. The foam material has the following characteristics:

●It is light in specific gravity, and its density is generally 17-100 kg/m3. Customers can choose pre-foamed materials with different densities according to the needs of different molded products;

●Strong temperature resistance, usually can withstand temperatures of -40℃～110℃, and the temperature range that can withstand in a short time is even larger;

● Good cushioning performance, even when the cushion is not thick, it can also play a good cushioning effect;

● 100% recyclable. Compared with other foam materials, EPP is a pure hydrocarbon and does not contain any other chemicals that are not conducive to recycling such as plasticizers or foaming agents. Therefore, it can be decomposed after heating, and what remains after burning Water and carbon dioxide. Even if the fog test is carried out at 100°C, it can meet the requirements of environmental protection regulations. In addition, when EPP is combined with other polypropylene such as PP film, injection-molded skeleton, TPO fabric, etc., a so-called "material integration system" can also be realized, that is, the system does not need to be decomposed when it is recycled.

Based on the above characteristics, EPP is very suitable for the requirements of safety, environmental protection, and weight reduction in the automobile manufacturing industry. Therefore, since its advent in the 1990s, EPP has quickly been widely used in the field of automobile manufacturing, becoming the new favorite of energy-absorbing and shock-absorbing materials, and its application potential is very broad. At present, many models at home and abroad use EPP materials as energy-absorbing components, which can be used as bumper cores, side guards, door inner panels, energy-absorbing pads, cushions, headrests, sun visors, tool boxes, etc.