| Product: | Household Product |
|---|---|
| Product Material: | Plastic |
| Shaping Mode: | Plastic Injection Mould |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
gas assistant char injection molding, plastic chair air moulding
How to apply gas injection into your chair mould?
How to design the mould?
What you will face during injection?
Now let's discuss each point and make your injection chair mould easily.
1st, design of chair.
The design of chair is usually with two or four chair legs hollow inside.
This is in order to make the chair less weight, but still beautiful in appearance.
This is in order to make the chair less weight, but still beautiful in appearance.
2nd, design of chair mould.
There must be gas outlet entrance space for the mould, then after first shot, the material is hot,
the gas start blow into the channel, and can flow along the hot material.
Then come out of the cavity by the movement of slider to have the gas exit.
the gas start blow into the channel, and can flow along the hot material.
Then come out of the cavity by the movement of slider to have the gas exit.
3rd, how much pressure you need for gas injection? And what technology it works.
Usually, we need 100bar for the injection gas blow. But if you want to blow two legs throw, you need 180bar for blow it. Here is the draft to show what it works.
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Chair mould and molding quality control is sole of the chair mould.
We can control good chair mould quality and moulded chair quality.
Checking chairs by:
1. good flow of chair injection molding
2. chair strength test by 125kg weight pressure on the chair,
with the chair free standing on the glass surface.
3.stacking test of the chairs.
4.thickness test of the chair in each piont.
5. surface finish of chairs.
6. runner system for suitable chair
7. gas outless and air venting system for chair mould
8. smooth ejection and balance drop for chair demolding.
9. fast cooling and high speed cycle for chair mould
10. well finish on parting line of the chair.
11. high polish of chairs.
12. easy interchangeable for logo and backrest inserts.
13. weight control of the chairs.