How to distinguish between high temperature PET and low temperature PET? I believe this is a question that everyone wants to know. Today, the experts of China Packaging Bottle Network have specially arranged for you in a question-and-answer format. I hope to help everyone. : For recycled materials, can it be separated by the naked eye or by some simple methods?
B: If you have a melting point tester, I believe you will get it very easily. By the way, let me tell you that the price of a melting point tester is about 20,000 yuan, which can be taken away like a briefcase. If you don't have this stuff in a PET bottle, you are out of date.
When the ignition is burning, the wire is pulled and the wire is pulled off after being elongated. If the broken wire can be wound into several rolls, the melting point is normal, and the more the description is, the higher. In this respect, because of my lack of experience, I can't be qualified for a few volumes. I don't have the ability to do this.
In addition, when igniting, if it melts quickly, it means that the melting point is low, and the burnt bottle flakes become very dark, indicating that the melting point is low, and if the taste smells particularly sweet, the melting point may be low. . This is what the older generation said.
1, smell first, PET tastes different from ordinary plastic. Use a lighter to burn it, then you will smell very aromatic and comfortable (just burn a bottle to smell), if the PET contains other ingredients, the taste is very pungent There is a bottle containing SEBS ingredients that cannot be used.
2, look at the burnt part, if the distribution of black or oil droplets is too fast, most of the melting point is not normal, which is often found in PET film.
3, drawing, when burning, pull the wire on the lighter, see the length of the wire is not long, then pull the pulled wire off, look at the break point in the middle, the wire is not rolled into a small circle, the more the volume More indicates that the melting point is high. However, in general, if it is a bottle, there should be no big problem. The most critical point is to distinguish whether it contains PVC, which is a fatal injury to PET.
Others: When the ignition is burned, the wire is pulled and the wire is pulled off after being stretched. If the broken wire can be wound into several rolls, the melting point is normal, and the more the description is, the higher. In this respect, because of my lack of experience, I can't specify a few rolls to be qualified. In addition, when it is ignited, if it melts quickly, it means that the melting point is low, and the flakes of the bottle become very dark, indicating that the melting point is low, and the other is If the smell is particularly sweet, it may be that the melting point is low.