EOS P 396, Training Manual

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Basic information on materials
4.5
Training manual • Basic training • Status 03.14
EOS P 396
4
Storage of the powder
For consistent quality of the parts and a trouble-free building process, EOS
recommends the following storage conditions for plastic powder.
1)
From a storage time of 2 years from the test date on the material certificate a loss of quality due to
ageing is possible.
2)
On opening the sacks, temperature and atmospheric humidity should correspond to the installation
conditions for the machine in the operating state.
3) In the case of open bins the powder must be protected against soiling.
4) The storage duration is necessary for the electrostatic charging of the powder produced by mixing to
dissipate.
Temperature
[°C]
Atmospheric
humidity [%]
Storage
duration
New powder, used powder,
sieved used powder (recycled powder),
refreshed powder
-> In closed bins 5 - 35 20 - 70
2 years 1)
New powder
-> Prior to opening the sacks 15 - 20 50 - 80
Min. 24 h 2)
> 20 - 25 40 - 60
> 25 - 30 30 - 45
New powder, used powder,
recycled powder, refreshed powder
-> In bins with air change
3)
20 - 25 40 - 60 Max. 6 months
25 - 30 30 - 45
Powder after sieving/mixing
In bins with air change 3)
20 - 25 40 - 60
Min. 24 h 4)
25 - 30 30 - 45
Refreshed powder (conditioned)
-> In multibox (closed bins) 5 - 35 20 - 80
non-
condensing
Min. 24 h 4)
For long-term storage the plastic powder should be stored in closed bins to avoid
soiling.