What are the characteristics of PET preforms? How to solve the problem of insufficient temperature during preform production?

PET bottle preform is a part of bottle manufacturing, which is mainly processed by injection molding. Compared with other raw materials, the advantages of PET are more obvious, and it can play a role in the manufacture of bottles such as reagents, medical insurance and beverages. During the specific bottle tying process, the preform may have a problem of insufficient temperature. If you have any confusion in this regard, let's take a look.


Introduction to the characteristics of pet preforms

1. The transparency is as high as more than 90%, the surface gloss is excellent, and the appearance is glassy.
2. Excellent fragrance retention and good air tightness.
3. It has excellent chemical resistance, and it can resist almost all organic chemicals, including acids.
4. No poisonous gas will be generated when burning.
5. Excellent strength properties, after biaxial stretching, various properties can be further improved.

The solution to the insufficient temperature of PET preform manufacturing

1. Strengthen heat insulation measures.
2. Increase the temperature of the nozzle here.
3. Properly increase the material temperature.
4. Accelerate the injection rate.
5. Reduce the holding pressure.
6. Slow down the flow rate of cooling water.

Features of PET preform material:
1. PET is the main variety of thermoplastic polyester, commonly known as polyester resin.
2. PET is a condensation polymer of terephthalic acid and ethylene glycol, and together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester.
3. PET is milky white highly crystalline polymer with smooth and shiny surface.
4. PET has good creep resistance, fatigue resistance, friction resistance and dimensional stability, low wear and high hardness, and has the greatest toughness among thermoplastics;
5. PET has good electrical insulation performance and is less affected by temperature, but its corona resistance is poor.
6. PET is non-toxic, weather-resistant, chemical-resistant and stable, low water absorption, and resistant to weak acids and organic solvents.

48MM PET Preform