Blow moulding solutions

Ferlin has the solution

The blow moulding process is used to make hollow products such as bottles, jerry cans or tanks. This creates a large flow of residual material, also called tops and tails. The GRAVIMIX dosing and mixing machine is very accurate. By using this accuracy smart, we are able to bring the residual streams back into the process optimally, which means that a lot of savings can be made on additives and masterbatch. The hopper loaders and filters are also very suitable for working with dusty materials such as grist.

Removable hoppers make it easy to clean the machine. Because regrind or grinding materials are often used in the blow moulding process, dust is created during the process. With fixed hoppers, it is often a difficult job to get all the dust out of the hoppers. The removable hoppers make this a simple job. The hopper loaders can stay in place during cleaning, and no tools are needed. In addition, the hoppers are closed, so no unnecessary material is lost.


The removable weighing pan makes further cleaning of the dosing machine even easier. Just loosen an air coupling, and the weighing pan can be removed without any problems and without any loss of material.

The removable mixing chamber completes the easy cleaning of the dosing machine. The mixing chamber is fully welded and equipped with a manual slide so that no materials are unnecessarily lost.


Plunger slides are used in hoppers to dose larger materials. An additional advantage is that these plunger slides pull through the material so that even difficult flowing materials such as regrind or grinding material can be easily and consistently metered.


Sensor deflashing is standard on all our new machines. The blow-off cleans the mixing chamber sensor every cycle. Sometimes static material or dust from regrind or grinding materials can cause the sensor to signal that there is material in the mixing chamber. By blowing off the sensor every cycle, this is solved and the process will no longer come to an unjustified halt due to a lack of material.


F4 and CF500 filters are used to transport materials before they are dosed and processed in the blow moulding machine. Because regrind or grit is often used in blow moulding, a lot of dust is generated. A lot of dust can lead to a reduced capacity of the transport system, so pleated filters or other filters that are cleaned with compressed air often have to be cleaned manually as well. This brings the process to a standstill. The F4 and CF500 filters work with filter bags and a vacuum-based self-cleaning system that creates 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 manual cleaning is hardly necessary. This not only saves a lot of time but also a lot of downtimes.


Hopper loaders of the MOVAC series have been developed with a lot of attention to detail. These details ensure that the process does not have to come to a halt because rubber has worn out at the inlay filter, which is missing in our hopper loaders due to smart design.

View our hopper loaders.


For materials such as PET, proper drying is essential. A constant dew point is very important here. The drywell dryers work by means of a rotating disc that simultaneously regenerates, cools down and absorbs moisture. This not only creates a very constant dew point but also saves a lot of energy.

Check out our Drywell dryers.

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