Quality identification and grade division of plastic recycled materials

Quality identification method for plastic recycled materials :

1. Surface finish is an important indicator to measure the quality grade of various recycled materials. The surface of high-quality recycled materials is smooth and lubricated.

2. Transparency is an important indicator for measuring the quality grade of medium and high-grade recycled materials. The transparency is good and the quality is good.

3, the uniformity and consistency of color is an important indicator to measure the quality grade of colored recycled materials, white, milky white, yellow, blue, black and other colors.

4. Particle compactness is an important aspect of testing the technological level of recycled materials. The plasticization is poor and the particles are loose.

5. See if the recycled material particles float and water are used to inspect PP. The content of PE filler material is different for recycled materials. Different recycled materials have different uses, because it is difficult to formulate uniform standards to fully satisfy users. The process requirements are subject to change.

Grade classification of return materials:

The first-time return plastic granules refer to the raw materials used as non-flooring scraps, also known as undercuts, and some are spouts, rubber heads, etc., the quality is relatively good, not used, in the processing of new materials In the process, the remaining small corners, or the quality of the return plastic particles. The recycled plastic granules processed by these wool materials have better transparency, and the quality of the recycled plastic granules can be compared with the new materials, so it is called a first-grade plastic granule or a special-grade plastic granule.

The secondary return plastic granules refer to the raw materials that have been used once, except for the high-pressure recycled plastic granules. Most of the imported high-pressure plastic granules are imported. If the imported large parts are industrial films, they are not exposed to the wind. Therefore, the quality is also very good, and the processed plastic particles have good transparency. At this time, it should be judged according to the brightness of the plastic particles and the roughness of the surface.

The third-stage reclaimed plastic pellet refers to the plastic pellets that have been used twice or more. The recycled plastic pellets are not very good in terms of elasticity and toughness and can only be used for injection molding. The first and second return plastic pellets can be used for blown film, wire drawing and the like.

Special grade plastic pellets: close to raw materials, 80-90% of raw material price; first-class recycled plastic pellets: 70-80% of raw material price; secondary recycled plastic pellets: 50-70% of raw material prices; Plastic pellets: 30-50% of the price of raw materials. From the quality points: drawing, blown film, spinning, first, second, injection filling, etc., sometimes the same level and then grade.

Turning Machine

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Shaoxing Sunfong Intelligent Equipment Inc. , https://www.zjsxsunfong.com