Analysis of the influence on the quality of PET preform blow molding productsPET bottles are very common in life, such as beverage packaging bottles. The blowing equipment used for blowing PET bottles can usually be divided into two-step blow molding machines and one-step blow molding machines, as well as semi-automatic blow molding machines and fully automatic blow molding machines.These two kinds of blow molding machines currently have a good market share. If you can choose between these two blow molding machines, then it is better to consider which one is more suitable. However, in general, under the trend of the industry's tendency to become fully automatic and intelligent, the fully automatic one-step blow molding machine is showing an outstanding development trend, which is increasingly recognized by a wide range of manufacturers. The semi-automatic two-step blow molding machine involves storage and transfer in the production process, and some other problems may occur during the time between the cooling of the preform and the reheating of the preform, which makes the final bottle less ambitious.At PTI, Ohio, USA, a study was conducted on the relationship between preform storage time and blowing effect.The research results show that although the moisture content of the new preform may be close to 0, over time, if the storage environment is bad enough, that is, the storage environment called "extremely humid conditions" in terms of PTI. Under such conditions The moisture content of the stored preform may be as high as 10000ppm, and the PET preform will absorb a certain amount of moisture during the storage process and cause a series of problems. The storage time of the preform and the storage environment will affect the performance. The storage time of the preform The longer it is, the more difficult it is to handle and the harder it is to meet performance requirements.
