We are professional in designing and
manufacturing various types of chair mould, like PC chair mould, PP chair
mould, gas assisted chair mould, child chair mould and so on. Almost most of
the mould company can make chair mould, but seldom of them know how to make a
high quality chair mould with good price. That’s why more and more company
closed down, while Sino become stronger and stronger.
Some key points to check if the chair moulds
high quality and not:
1. Chair mould running cycle time
If the chair weight from 1700g to 2400g, the
cycle time should be 35s to 50s. If the machine plastic melt and inject are
with accumulators. Please check how they make the cooling channel? The cooling
channel is extra in and out?
2. Chair mould guaranteed life
Most of manufacturers will say that their
moulds will have one millions guaranteed life. But God now how can they
guarantee. Can the mould run 1 million shorts without any flashes? Because if
you accept to cut the flash by your workers heavy labor, I think you can use this
mould for 10 millions shorts. So you need to check the steel hardness, and in
the mould if there is any parting area were welded. Normally the steel hardness
should be HRC33.
3. Double check the parting line finishing, if
there has any sharp edges?
First you have to check the chair mould
parting line is correct or not. You have to know how the CNC milling the cavity
and core. Are they one stage finishing or several stage finishing?
4. Double check the wall thickness, is it
even or not?
The uneven thick will cause the injection not
balance and also will cause the cooling time not even, which will affect the
injection speed slow down and also will cause the shrinkage marks. If the CNC
milling is too rough, you can never get a chair with thickness even.
5. Check the stackable
When the chair plastic design is doing, we
have to check its stackability. And you also need to consider the deform
possibility of the chair moulding.
All in all, one high quality chair mould must be with short cycle
time, long mould life, perfect parting line finishing, good stackability, well
air vent design, less weight but strong enough. If you have idea want to
develop chair mould, please kindly contact me, Iam glad to offer the whole chair production line for you.
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Email: auto@sinomould.com
Skype: sino.mould
