Identify the advantages and disadvantages of recycled plastic

All plastics industry can be recycled through some kind of processing and used again. The raw material is called plastic recycled material.

Standard classification of recycled plastics

Plastic pellets processed from recycled plastics are generally divided into one, two, or three levels of material.

First-class recycled plastic pellets

Is the raw material used for the edge of the ground, also known as the next corner, but also some of the water mouth material, rubber head material, etc., the quality is better, not used, in the process of processing new material, the remaining small edges, or the quality is not good back plastic pellets. With these raw materials out of the processing of plastic pellets, transparency is better, the quality of its plastic pellets can be compared with the new material, so-called the first-class plastic pellets, part of the top quality is called special plastic pellets.

Second grade recycled plastic pellets

It refers to the raw material that has been used once. Still, the high-pressure plastic pellets, except for high-pressure plastic pellets, high-pressure plastic pellets using imported large parts, imported large parts of the industrial film, which is not after the wind and the sun. Hence, its quality is also excellent, processing the plastic pellets back to good transparency, which should also be judged according to the brightness of the plastic pellets before and whether the surface is rough.

Tertiary recycled plastic pellets

It refers to the raw material that has been used twice or more, and the processed plastic pellets are not very good in terms of elasticity, toughness, and other aspects. Therefore, they can only be used for injection molding. The first and second-grade recycled plastic pellets can be used for film blowing, wire drawing, and other purposes.

From the point of view of the price of the recycled material, particular grade recycle plastic pellets: close to the raw material, 80-90% of the raw material price; first grade recycles plastic pellets: 70-80% of the raw material price; second grade recycles plastic pellets: 50-70% of the raw material price; third grade recycle plastic pellets: 30-50% of the raw material price.

Experienced procurement in selecting PP recycled material, summed up a recipe: a look, two-bite, three combustions, four hold.

First look, look at the luster, look at the color, look at the transparency.

Then bite, hard is good, soft is adulterated.

Re-combustion, no petroleum odor, no black smoke emitted, no molten dripping is good.

Four draws, molten state for drawing, a continuous picture is good, otherwise is adulterated.

11 programs to identify the advantages and disadvantages of recycled plastics

1, transparency: transparency is an essential indicator of the quality level of medium and high-grade recycled material particles; there is the transparency of the material, the quality is good.

2, surface finish: the surface of high-quality recycled material is smooth and lubricated.

3, color: color uniformity and consistency is an important indicator to measure the quality level of colored recycled material particles (white. Milky white. Yellow. Blue. Black, and other colors).

4 , smell:
Ignite it with a lighter.
Blow it out after 3 seconds.
Smell its smoke and identify the difference between it and the new material.

5 , drawing: after the recycled material is ignited and extinguished, use an iron object to quickly touch the melt, and then quickly pull it apart to see if the silk is evenly formed, is uniform is good material, after removing several times, the silk overlap, pull it apart again to see if it has elasticity, can be torn apart again without breaking, not broken or broken after pulling away for a distance is good material.

6 , melt: In burning, there is rapid black smoke or melt rapidly dripping, which is not good material.

7 , density of particles: poor plasticization of the regeneration process will lead to loose particles.

8 , bite with teeth: first to experience the strength of the new material themselves, and then compare, if relatively soft, adulterated with impurities.

9 , look at the cut section: the rough area has no luster and poor material quality.

10 , floating water: as long as there is sinking water, that is poor.

11 , tested by special equipment.

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