FAQ for Experts. Answers by Experts.

29

Which marginal conditions are important when choosing a material loader?

From the left: Material loader with side mounted vacuum valve and angled material inlet, material loader with membrane vacuum valve for clean room use, dedusting module, material inlet flap with reinforced deflector

mo explains details regarding the configuration of material loaders
In addition to the throughput and the local conditions, numerous other criteria are important for the conception of a material supply, which can also affect the configuration of material loaders. …


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28

How can multiple machines be supplied with different material?

Scematic representation of a machine related conveying system

mo explains the concepts of multi-point conveying systems

If multiple machines in plastics processing need to supplied with different plastics, then normally the installation of a multi-point conveying systems would be sensible. …


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27

How does the material reach the processing machine?

Different versions of stand-alone material loaders for vacuum conveying: Venturi material loader METRO VL (lower left) and METRO HES 50 (middle) for throughputs of up to 50 kg/h back and right material loaders of the METRO HBS range to be connected to a separate blower station.

mo explains how vacuum material loaders work

Vacuum conveying, or suction conveying, has established itself in plastics processing as the method of supplying machines with material. …


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26

What are the different types of pneumatic conveying?

Schematic representation of a conveying system

mo explains how vacuum material loaders work

The two main conveying systems are pressure and vacuum conveying for pneumatic conveying within the plastics industry. …


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25

Which types of material conveying are relevant for plastics processing?

The most important conveying principle in plastics processing in pneumatic conveying, where the material is conveyed with air

mo explains the procedural principles of bulk material conveying

Hydraulic, mechanical, and pneumatic conveying systems are options for material handling in the plastics industry, in regards to the conveying of bulk material. …


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24

Which criteria need to be considered for material flow?

Silos

mo explains some of the significant aspects for the concept design

The set-up of an economically sustainable as well as technically sensible material supply concepts start with the storage of the source material. …


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23

What is important for material flow in plastics processing?

Conveying line

mo explains the background information and details of plastics conveying

Now that mo’s corner has dealt with the dosing and drying of plastics extensively, this issue will turn to the third chapter of material handling in plastics processing with the topic “conveying”. …


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22

How does drying work?

Moisture content in g/m³ at various dew-points

mo explains the physics of drying

Drying material means removing its moisture, which sounds very simplistic. The first method that comes to mind is to use the highest possible drying temperature to dry the material rapidly. …


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21

How does the dew-point impact plastic granulate drying?

Moisture content [g] in m³ air at various dew-point temperatures.

mo explains the correlation between dew-point and (residual) moisture

To recap, there are four key parameters involved in drying plastic granulate: drying temperature, air-flow, dew-point temperature and the drying time. …


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20

What other drying options are there?

Blanketing bins keep granulate dry

mo explains: drying cabinets, blanketing bins, infrared dryers, and vacuum dryers

As is the case with many fields of industry, when it comes to drying plastics, there are common, and less common, technologies. …


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