Analysis of the impact on the quality of PET preform blow molding finished automatic blow molding machine
Both of these two blow molding machines currently have a good market share. If you can choose between these two blow molding machines, it is better to consider which one is more suitable. But in general, under the trend that the industry tends to be fully automatic and intelligent, the fully automatic one-step bottle blowing machine is showing an outstanding development trend and is more and more recognized by the vast number of manufacturers. The semi-automatic two-step bottle blowing machine involves storage and transportation in the production process, and some other problems may occur during the period from cooling to reheating and blowing of the preform, making the final bottle unsatisfactory. .
At PTI (Plastic Technologies Inc.) in Ohio, USA, a study was conducted on the relationship between preform storage time and blowing results.
The results of the study show that although the moisture content of new preforms may be close to zero, over time, if the storage environment is sufficiently harsh, which is what PTI calls "extremely humid conditions", under such conditions The moisture content of the stored preforms may be as high as 10000ppm, which will cause a series of problems due to the absorption of certain moisture during the storage process of the PET preforms. The storage time of the preforms and the storage environment will affect the performance, and the storage time of the preforms. The longer it is, the harder it is to handle and the harder it is to meet performance requirements.