The performance and characteristics of EPS foam packaging materials are:
(1) The bulk density is very low, which can reduce the packaging weight and transportation costs;
(2) It has excellent absorption of shock and vibration energy, which can greatly reduce the damage of products when used for buffering and shock-proof packaging;
(3) It has strong adaptability to changes in temperature and humidity, and can meet the requirements of general packaging conditions;
(4) Low water absorption, low hygroscopicity, good chemical stability, will not corrode the contents, and have strong resistance to chemicals such as acids and alkalis;
(5) Low thermal conductivity, can be used for thermal insulation packaging, such as ice cream cups, fast food containers and thermal insulation fish boxes;
(6) The molding process is convenient, and various foam pads, foam blocks, sheets, etc. can be made by molding methods such as molding, extrusion, and injection. It is easy to carry out secondary molding processing, such as foam sheets can be made into various fast food containers by thermoforming. In addition, the foam block can also be bonded by itself or with other materials with adhesives to make various cushioning pads and the like.