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Frequently Asked Question About Aman Plstic Moulding

About Extrusion Blow Mould Questions

1. Can PETG material share same blow mould with PP/PE blow mould?

No. It can not share the same mould, PETG request the mould to use a different steel mould like it must be anti-rust steel mould material, like 2316 or S136.

2. How many ways are there to automatically de-flash the bottom?

The auxiliary mould is pushed out, or the machine pulls the bottom.

3. How many ways are there to de-flash the mouth, and which way is suitable for each situation?

You can use pushing off or rotary cutting.

4. How to calculate the production and the cycle time ?

It depends on the product itself, normally containers smaller than 200ML, cycle time can control to 25s.

5. How many steel materials, what's the difference and lifetime and necessity?

There is some common mould steel, such as P20/718/2738/2316/S136/ALU ALLOY The specialty is Al alloy has better cooling and is also very light. But it’s too soft and crispy, so life is not there.

6. How to make sure if the final product can drop freely or not, by machine tie bar distance?

The maximum mould thickness of the machine – the thickness of the actual mould is greater than the maximum width of the finished product, and it can fall off.

7. What is the difference between the automatic in-mold labeling molds? Can ordinary blow molds be transformed by punching holes and connecting to vacuum valves?

As long as the position of the corresponding air hole is marked to avoid the cooling water channel.

8. What is the distance between them in the case of multiple cavities ?

Center distance – Bottle diameter = Spacing (25MM minimum)

About injection mould Questions

1. How to arrange the number of cavities and how to calculate output?

The number of cavities is arranged according to the injection volume, and the minimum number of cavities is 25MM.

2. How to judge where the feed port is?

Point gate, side gate.

3. There are several demoulding methods, how to judge which is reasonable?

Ejector pin demoulding, push plate demoulding, strong demoulding.

4. What are the specifications of the mold material and what is the difference?

2083、2344、H13

5. Is the product an independent cavity?

The circular regular machine is an independent cavity.

6. What is the hardness range of commonly used die steels? where to be hard and where to be soft?

The hardness range is 30-52, and the moving parts are generally soft. For example, the slider uses NAK80

7.What are the benefits of hot runner technology over conventional cold runners?

“1. Save raw materials and reduce costs.
2. Shorten molding cycle and improve machine efficiency
3. Improve the surface quality and mechanical properties of products.
4. Point gate can be used without three-plate mold.”

8. Where are the common problems of the hot runner and how to solve them?

The feed port of the hot runner and the mold interface are easy to leak glue.

9. How to judge whether it can be a full hot runner or a semi-hot runner?

Half of the flip cap is hard to do full hot runner.

10. The slider is always broken, is it a structural problem, and how can it be avoided? (Example: eye drop bottle cap)

Yes. Pulled-off sliders are easy to break

About PET Tube Preform Mould Questions

1. What is the difference between the dies without tail, short tail and long tail? Why do some tailless molds still have tails, and what is the problem?

1. Without a tail gas seal, there should be no tail at all. The short tail is very short after the air seal, and the long tail is longer.
2. Some mold factories use precision machining equipment such as slow-moving wires and mirror sparks in mold processing. After each link is processed, they pass the three-dimensional inspection. However, after they make plastic molds, there will still be large jaws and assembly stage differences. Big and so on the defect. But our molds rarely have such problems. Because we understand the importance of these three-level positioning.
The accuracy of the mold cavity does not guarantee the production of good products. It must be considered from many aspects. If the positioning design of the plastic mold is unreasonable, it will cause problems such as poor mold movement, damage, and dislocation. In addition to the precision of the plastic mold, the mold base, the side lock, and the tiger’s mouth are collectively referred to as three-level positioning, which is a very important system in the plastic mold.

2. The blown bottle has flow lines and bubbles. What are the reasons?

The reason is that the runner and PET material are not dry well

3. How to calculate the output?

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About PET stretch blow mold Questions

1. Under what circumstances, it can only be used for semi-automatic?

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consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Quis ipsum suspendisse ultrices gravida. Risus commodo viverra maecenas accumsan lacus vel facilisis.

Lorem ipsum hdiwp ametvel facilisi

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