Removable hoppers make recipe changes extra easy in the injection molding process. This makes it easy to clean the batch blender. Injection molding often involves multiple color changes in a day. With fixed funnels, it is often a difficult task to get all the material out of the funnels. The removable funnels make this a simple job. The hopper loaders can remain in place during cleaning and no tools are required. In addition, the funnels are closed so that unnecessary material is not lost.
The removable weighing pan makes further cleaning of the dosing machine even easier. Only loosen an air coupling and the weighing pan can be easily removed without losing material.
The removable mixing chamber completes easy cleaning of the dosing machine. The mixing chamber is fully welded and equipped with a manual slide, so that no materials are lost unnecessarily here either.
The injection molding process often creates residual parts. These residual parts already contain the correct proportion of components. These can be reprocessed by grinding them to regrind. The regrind control ensures that the consumption of regrind by the GRAVIMIX follows the actual flow of regrind or regrind. The GRAVIMIX automatically adjusts the dosage between set percentages so that as much as possible of these residual parts is consumed, so that considerable savings can be made on additives and master batch.
Sensor cleaning is a standard feature on all our machines. The blow-off cleans the mixing chamber sensor every cycle. Sometimes it can give the signal that there is material in the mixing chamber due to static material or dust from regrind or regrind. By blowing off the sensor every cycle, this is remedied and the process will no longer be stalled due to the lack of material.
Low level sensors give an early warning when material threatens to run out. A hopper loader is not always necessary, especially for smaller percentages of additive or masterbatch in smaller production series. A timely signal prevents the process from unnecessarily stopping.
F4 and CF500 filters are used for the transport of materials before they are dosed and processed in the injection molding machine. Because there is often regrind or regrind used in injection molding, a lot of dust is created. A lot of dust can lead to a reduced capacity of the conveying system, which means that pleated filters or other filters that are cleaned with compressed air often also have to be cleaned manually. This stops the process. The F4 and CF500 filters work with filter bags and a vacuum-based self-cleaning that causes a very large airflow through the filter bags. This reverse jet cleaning is very powerful, so that the capacity of the system is maintained and there is hardly any manual cleaning required. This not only saves a lot of time, but also a lot of down-time.
Hopper loaders of the MOVAC series have been developed with great attention to detail. These details ensure that the process does not have to come to a standstill because a rubber is worn at the insert filter, because of clever design it is missing in our hopper loaders.
Good drying is essential for materials such as PET. A constant dew point is very important here. The drywell dryers work by means of a rotating disc, at the same time regenerating, cooling and absorbing moisture. This not only creates a very constant dew point, it also saves a lot of energy.