Clean room
For your safety: machines built to comply with GMP rules
Systematic exclusion ofcontamination sources
ENGEL injection moulding machines, either with tiebars or with a tiebar-less clamping unit, offer the perfect conditions for part production with minimal risk of contamination. By measuring potential particle sources and adopting countermeasures ENGEL has removed potential sources of error throughout the whole supply range. The clamping unit for example is perfect for combining with local laminar flow modules.
The GmP qualification scheme provides the foundation forthe individual development steps en route to a clean roomcapable injection moulding machine.
One example of our systematic approach to remove potential
sources of contamination along the part flow is full encasement
of the discharge area in stainless steel. On the one hand,
this prevents blind angles, while at the same time facilitating
periodical cleaning. This advantage is enhanced by elevating
the machine‘s position.
One of the biggest sources of particulate contamination on
an injection moulding machine is the plasticizing cylinder.
Thanks to our ventilation housing we capture both the particles and the hot air and feed them into the clean room‘s exhaust air system. This reduces the climate control energy requirement in the clean room.
Ventilation of the pre-fill tanks on hydraulic injection moulding
machines, due to cyclical fluctuations of the oil fill level, is another source of turbulence and particulate contamination. This
potential source of contamination was removed by attaching
the ventilation opening to a flexible air reservoir to achieve a
closed airflow.
The hopper feedthroat for plastic material to the plasticizing
barrel is another potential source of particulate contamination
due to the dust content in the granulate material. modifications
to the feedthroat construction have improved the sealing
ability of the shut-off solenoid and thus removed the danger
of contamination.