[Packaging Belt Supply] General domestic production of recycled materials is more difficult to distinguish, because many factories waste contains miscellaneous materials.
1. The color is transparent, no matter what color it is.
2. The gloss is much brighter, and the gloss is not very good, but the gloss is the material itself.
3. Odor: Ignited with a lighter, blown off after 3 seconds, and smelled of the smell of smoke. Among them, it should be noted that the flavours of the colored toners will be relatively large, which will mask the partial taste of PP (PP recycled material).
4. Drawing: After the fire is extinguished, quickly contact the melt with an iron object, and then quickly pull it apart to see if the formation of the wire is uniform. The uniform material is good material. After several pulls, the wires are overlapped. Pull it open again to see if it has any elasticity. Can it be pulled open again and again. It is good to break without breaking or breaking apart.
5. If the above cannot be confirmed, please use fire again. Quickly smoky or melt in the process of burning. Dripping quickly, not good material 6. Biting with teeth: First experience the new material PP (PP recycled material) The intensity, and then compare it, if relatively soft, absolutely add PE inside.
7. Look at the section of the incision: The section is rough and unsharp, and the material quality is poor.
8. Float: As long as there is submerged or poor, if the above is not sure, or uncertain, it is only the test machine. My personal opinion is that whether it is good or bad, it must be certified by machine, because it is the most secure. Other materials can also be applied to the above, of course, they have to understand the new material, the price is too cheap, sure quality will be a problem, the actual cost will be cheaper.
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