Are you planning to increase production of PET preforms or start a new PET preform business? Then this article is very suitable for you to read, we have compiled a guide for you to choose a PET preform injection molding machine, I hope it will help you!
The Importance of Choosing PET Preform Injection Molding Machine
Choosing the right PET preform injection molding machine can increase production, improve efficiency, reduce costs for your company, and make your products more comPETitive in the local market. This will allow you to sell more products and make more money while building a premium brand reputation. Even better, you'll have the protection of long-term customers.
The Main Points of Choosing PET Preform Injection Molding Machine
- Sufficient clamping force
- Pay attention to the actual injection volume and screw diameter of the machine
- The tie-bar distance, mold height and minimum mold size should be considered
- According to the size of the mold and preform, judge whether the opening stroke and ejection stroke are sufficient for product demoulding
Preparation Before Selecting PET Preform Injection Equipment
In the preparation process, you should make sure of three points: preform weight, the neck diameter of preform, and daily capacity. Based on the info, PET preform device supplier will recommend a mold cavity and calculate the mold dimension for you.
The Correct Steps to Choose PET Preform Injection Molding Machine
When we have the above information, we can select suitable plastic machines by following steps:
1. Full injection
In general, most PET preform mold is multi-cavity, in order to full injection, we should pay attention to the actual shot volume and screw diameter.
Actual shot volume= preform weight*mold cavity
For better stability, the theoretical shot weight of machines should be 1.35 times at least of actual injection weight.
2. Enough big machine to mold
PET preform mold need put on an injection machine for mass production. So the PET equipment should be big enough to put the mold. We have to consider the tie-bar distance, mold height, and minimum mold sizes. The height and width of molds should be smaller than the tie-bar distance. Mold thickness should between max mold height to min mold height. It will be better than the mold dimension is bigger than the minimum mold size.
3. Enough clamping tonnage
Usually, the machine tonnage is bigger, and the clamping force will be stronger. In order to ensure plastic material melt into each mold cavity shot, it will require the PET injection machine with high pressure to push. Without enough clamping force, the mold will be open and raw material will leak, even causing accidents for molds and operators.
4. Enough stoke to take out the product
Based on the mold and PET preform size, we need to judge if the toggle stroke and ejector stroke is enough for product demould. It’s better to keep the toggle stroke at least twice longer than the product's sizes in the direction of mold open and close. Ejection stroke should be enough distance to eject out the products.
Conclusion
SUNBUN provides customized PET preform injection molding machine solutions for customers with different needs, from tube preform project planning, and complete equipment supply to thoughtful after-sales service, whether you are interested in PET injection molding machines alone or are interested in our solutions.
If you are interested, you can leave a message for us, and our sales engineer will contact you as soon as possible. Or you visit our catalog of PET preform injection molding machines!