Single Use Water Bottles
It should be noted that some microwave lunch boxes, box to the №5 PP manufacturing, but the lid was made on the 1st PET, PET can not withstand high temperatures, it can not be put together with the box into the microwave oven. 6 — PS polystyrene common in the bowl of instant noodles, fast food boxes. Can not be placed in the microwave oven, so as to avoid the high temperature and the release of harmful chemicals. Avoid using fast food boxes to pack hot food, do not use microwave oven to cook noodles with instant noodles. 7 — PC other types common in the kettle, space cup, bottle. Department store companies often use these materials when the cup of gifts. However, this material cup is easy to release toxic substances bisphenol A, harmful to humans. In addition, do not use this cup when the heat, do not sun in the sun. PET does not require additional reactants or chemical reagents to be added or removed, thus reducing costs and obtaining high purity PET products. The recovery process shown in Figure 1. Fig.1 Schematic drawing of recycle of waste PET bottleby glycolysis-1.2.1 Physical recovery method The physical recovery method is a method in which waste PET bottles are separated, broken and washed. And a method of performing granulation after drying. There are two main types of physical recovery: one is to cut waste PET bottles into tablets, from the PET separation of HDPE, aluminum, paper and adhesives, and then the PET fragments by washing, drying and granulation; the other is The first waste PET bottles on the waste PET caps, base, labels and other impurities with mechanical separation, and then by washing 56. Plastic industry in 2005.
Pet bottle production process Blowing process is a two-way stretching process, in the process, pet chain was two-way extension, orientation and arrangement, thereby increasing the mechanical properties of the bottle wall, improve the tensile, tensile, impact strength , And have a good air tightness. Although the stretch helps to improve the strength, but can not be too much to stretch, to control the good stretch blow ratio: radial not more than 3.5 to 4.2, axial not more than 2.8 to 3.1. The preform wall thickness should not exceed 4.5mm. The blowing is carried out between the glass transition temperature and the crystallization temperature, and is generally controlled between 90 and 120 degrees. PET in this range of performance for the high elasticity, rapid blow molding, cooling and forming a transparent bottle. In a one-step process, this temperature is determined by the length of the cooling time in the injection molding process (such as Aoki Blow Molding Machine), so to connect the good note — blowing the relationship between the two stations. Blowing process: stretching — a blow — the second blow, three action time is very short, but must be with the good, especially the first two steps determine the overall distribution of the material, the quality of the blown good or bad. It is advisable to adjust the temperature of the preform, such as the timing of the start of the drawing.