plastic

FAQ for Experts. Answers by Experts.

34

How can material distribution be automated?

Operating principle of a selection station with base plate (grey) and turntable (orange) with connection pipe. The material is conveyed from the material feed line (A) through the connection pipe to the machine (B).

mo explains fully automated material distribution systems

As well as the distribution systems with proportioning valves or manually operated coupling stations described in Issue 33, automated material changes can also be performed. …


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33

How can material be optimally distributed?

The Metromix proportioning valve (left) can also be retrofitted. After removing the transparent lid, it is easy to clean. Right, a coupling station with 6 inlets and 36 outlets

mo explains how material proportioning valves operate
Supplying a single processing machine with only one material is relatively simple. It becomes a little more complicated when regrind, as well as virgin material, should be supplied to the processing machine. …


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32

When is it necessary to purge material lines?

When conveying powder, filter and powder must be suited to each other, otherwise particles may permeate the filter or block the filter

mo explains why purging can contribute to plant safety

The point of purging is to remove or minimise transported material deposits from a material line. …


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31

How does the dedusting of granulate work?

The material is dedusted while it is being conveyed in the material loader.

mo explains the dedusting units and implosion purging of filters

For the production of high quality parts, fine dedusting of the material may be required at the end of the conveying process, even if the material is virgin 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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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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13

Why should plastic granules be dried?

By using a suitable dryer, you can ensure defined, consistent moisture levels for your plastics.

mo explains: The moisture content of the feed material has a significant impact on the reliability of processes and the quality of the end product.

When manufacturing plastics, it is essential to ensure that the moisture content of the feed material is just right. …


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