Identification of the melting point of plastic PET raw material
How to distinguish between high temperature PET and low temperature PET? I believe that this is a question that everyone really wants to know. Today, experts have organized special questions for everyone in the form of one question and one answer, hoping to help everyone.
A: Is it possible for the recycled material to be separated by the naked eye or some simple method?
B: If you have a melting point tester, I believe you will do it very easily. By the way, telling you that a melting point tester costs about 20,000 yuan, it can be taken away like a briefcase. Do PET bottles without this stuff you can be left behind.
When the ignition is burning, the wire is pulled and stretched, and then the wire is broken. If the broken wire can be rolled into several rolls, the melting point is normal, and the more instructions are higher. In this respect, I am not qualified because of my lack of experience. I cannot do this with a few volumes. You have to experiment with yourself.
In addition, in the ignition, if the melting is rapid, it means that the melting point is low, and that the burned bottle pieces become particularly black, indicating that the melting point is also low, and that the taste is particularly sweet, it may also be a low melting point . This is what the older generation said.
1, first smell, PET taste different from ordinary plastic. Burn it with a lighter, and then it smells very aromatic and comfortable (by burning a bottle to smell it). If PET contains Other ingredients, the taste is very pungent. One type of bottle containing SEBS cannot be used.
2, to see the burning part, if the black or oil droplets are distributed quickly, most of the melting point is not normal, which is often found in PET film.
3, drawing, when burning in the lighter pull the wire, see the silk does not grow long, and then pulled out of the silk pull off to see the middle of the breakpoint, the wire is not rolled into a small circle, the volume of the more More to explain the high melting point. However, if it is a bottle tablet, there should not be any major problems. The most critical point! Is to distinguish whether it contains PVC, which can be fatal to PET.
Miscellaneous: When the ignition is burning, the wire is pulled and stretched, and then the wire is broken. If the broken wire can be rolled into several rolls, it means that the melting point is normal, and the more the instructions are higher. In this respect, because of my lack of experience, I can't specify several volumes to be qualified. In addition, when I ignite, if I melt quickly, it means that the melting point is low, and that the burned bottle pieces become particularly black, indicating that the melting point is low. If the taste is particularly sweet, it may also be low melting point.
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