Pet preform suppliers
The success of any Pet bottle recycling concept is hidden in the efficiency of purification and decontamination at the right place during processing and to the necessary or desired extent.Generally, the Pet Preforms following applies: the sooner foreign substances are removed, in the process, and the more thoroughly this is done, the Pet Preform suppliers more efficient the process is.The high plasticization temperature of PET in the range of 280°C is the reason why almost all common organic impurities such as PVC, PLA, polyolefin, chemical wood-pulp and paper fibers, polyvinyl acetate, melt adhesive, coloring agents, sugar and protein residues are transformed into colored degradation products which, in their turn, might release reactive degradation products additionally. Then, the number of defects in the polymer chain increases considerably. Naturally, the particle size distribution of impurities is very wide, the big particles of 60–1000 µm—which are visible by naked eye and easy to filter—representing the lesser evil since their total surface is relatively small and the degradation speed is therefore lower. The influence of the microscopic particles, which—because they are many—increase the frequency of defects in the polymer, is comparable bigger.
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