Classification of Plastic Particle Grades

Recycled plastic pellets are mainly classified into grades based on the different raw materials used and the characteristics of the processed plastic pellets, generally divided into first, second, and third grade materials.

Primary material

It refers to the use of raw materials that have not fallen to the ground, or are called bottom corner materials, some of which are water outlet materials, rubber head materials, etc. The quality is also relatively good, that is, unused. In the process of processing new materials, the remaining small corners or raw materials with poor quality. The particles processed from these raw materials have good transparency and their quality can be compared with new materials, so they are classified as first grade or special grade materials.

Secondary material

It refers to the raw materials that have been used once, except for high-pressure granulation. Imported large pieces are mostly used in high-pressure granulation. If the imported large pieces are industrial films, they have not been exposed to wind and sun, so their quality is also very good. The transparency of the processed particles is good. At this time, it should also be judged based on the brightness and surface roughness of the particles.

Third grade material

It refers to particles processed from raw materials that have been used twice or multiple times, and whose elasticity, toughness, and other aspects are not very good.