About the advantages of packaging sponge used in life, mainly including the following aspects:
1, excellent mechanical properties: the mechanical properties of packaging sponge such as tensile strength and tear strength are better than foam.eco washing up sponge Its tightening strength is lower than that of rigid polyurethane, but it still has a medium degree of tightening ability. This mechanical property makes the packaging sponge can firmly fix and protect the goods.
2, significant thermal insulation effect: packaging sponge adopts closed-cell structure, so it will not be affected by solid and wet, and has a low thermal conductivity. Since its thermal conductivity is lower than that of foamed polyethylene, and it can effectively isolate the transfer of external heat, so it becomes an ideal heat-insulating material. This has a wide range of applications in the field of refrigeration and preservation.
3, recyclable: packaging sponge has good elasticity and high impact energy absorption capacity, which makes it in the use of the process can effectively buffer and absorb external forces. At the same time, it also has the characteristics of recycling, can be processed and reused for other purposes, reducing the waste of resources.
4, excellent chemical resistance: packaging sponge relative to other foam, has better chemical resistance. It can withstand the corrosion of cooking oil, to meet the needs of greasy food packaging.wholesale loofah suppliers In addition, it is also resistant to seawater, oil, acid, alkali and other chemicals, odorless and non-polluting. It is also widely used in the field of water sports goods and so on.
5, good heat resistance: foam angle is usually used below 80 ° C, while the foam PP instruments can reach 70-80 ° C, foam PP and even up to 120 ° C. Foam PP placed in 120 ° C for 21 hours, the size of the dimensional reduction of less than 2%, while in the cross-condition of the size of the foamed PE shrinkage of about 40%. Therefore, in the case of application temperatures exceeding 100°C, foamed PP can be chosen to meet the demand.
In summary, packaging sponges have many advantages in life applications, including excellent mechanical properties, thermal insulation, recyclability, chemical resistance and good heat resistance. These features make packaging sponge an ideal packaging material, widely used in food boxes, delicate gift boxes, fruit packaging and other fields.
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