Summary of the reasons for poor transparency of PET bottles in the bottle blowing machine and corresponding solutions:

            1. Excessively high heating temperature - Lower the temperature.

            2. Excessively long heating time - Shorten the heating time.

            3. The compressed air contains moisture - Use an adsorption dryer to dehumidify the compressed air.

            4. The injection-molded preform itself is not transparent - Improve the quality of the preform, select raw materials and increase the drying degree of the raw materials.

            5. Unsuitable preform design - Improve the dimension design of the preform.

            6. Too small blow-up ratio - Reduce the diameter of the preform.

The commonly used equipment for compressed air water removal is SR modular desiccant dryer, which can make the compressed air dew point in the compressed air system drop to -70 ° C, compared with the cold dryer, its advantage is low dew point; Compared with the traditional drying machine, it has the obvious advantage of small size, only the general size of the traditional drying machine, or even smaller. Light weight, less than 40% of the traditional dryer, is a compact compressed air water removal equipment.

SR modular desiccant dryer is the use of pressure swing adsorption principle (PSA) to achieve compressed air water removal, a tower adsorption, a tower regeneration, through the PLC to complete the periodic working state switch, the switching cycle is much shorter than the traditional drying machine switching cycle, the switching cycle is short, which means that the reverse blowing air consumption is less. It can improve the efficiency of compressed air drying, thus more energy saving, improve the service life of activated alumina and other desiccant, and reduce the cost of use. SR modular desiccant dryer is pre-installed in the drying pipe, as long as the top cover is opened, it can be removed, installation is very convenient, SR modular desiccant dryer has a variety of advantages, and reliable operation, stable dew point.

In addition, it should be noted that the front end of the SR modular desiccant dryer must be fitted with a precision filter for pre-filtration of compressed air.