Dosing & mixing

FAQ for Experts. Answers by Experts.

68

What are the criteria for choosing a dosing screw?

Variedad de husillos: la elección correcta del husillo de dosificación es la clave para una dosificación precisa (Imagen: Motan-Colortronic)Screw variety – the correct choice of dosing screw is the key to precise dosing

Mo explains specific aspects of dosing

Choosing the correct dosing is the key to precise dosing. …


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67

What is the purpose of dosing systems with flexible bins?

The flexible material bin can be changed in no time at all (image: Motan-Colortronic)

The flexible material bin can be changed in no time at all 

Mo explains specific aspects of dosing

  …


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66

What is the purpose of a level control in the collection bin for loss-in-weight systems?

With level control a specified fill level of the collection bin can be set. For this, the load cell (red) continuously monitors the content. (Image: Motan-Colortronic)

With level control a specified fill level of the collection bin can be set. For this, the load cell (red) continuously monitors the content. 

Mo explains specific aspects of dosing

  …


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65

Why does a loss-in-weight system need seperate refilling?

On the left a material loader installed on a refilling hopper. On the right and in the middle material loaders with controlled outlet flaps for direct refilling (image: Motan-Colortronic)

On the left a material loader installed on a refilling hopper. On the right and in the middle material loaders with controlled outlet flaps for direct refilling

Mo explains specific aspects of dosing

  …


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64

How does the resolution of a load cell influence dosing accuracy?

Modern load cells are available with different resolutions and maximum loads depending on the demands (image: Motan-Colortronic)

Modern load cells are available with different resolutions and maximum loads depending on the demands

Mo explains specific aspects of dosing

  …


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63

How does the dosing order affect the dosing results with a gain-in-weight dosing system?

When dosing a very fine, free-flowing component it can be helpful to dose the coarser component first (image: Motan-Colortronic)

When dosing a very fine, free-flowing component it can be helpful to dose the coarser component first

Mo explains specific aspects of dosing

  …


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62

What needs to be considered when dosing very small amounts?

 

When dosing very small amounts every individual granule is important (image: Motan-Colortronic)

When dosing very small amounts every individual granule is important

Mo explains specific aspects of dosing

  …


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61

What needs to be considered when designing dosing systems?

Simplified time flow of a cycle with tool closing (1), injection unit moves forward (2) , injection (3), holding pressure (4), plastification (5), material intake (6), injection unit moves back (7), cooling (8) and tool opening (9) (image: Motan-Colortronic)

Simplified time flow of a cycle with tool closing (1), injection unit moves forward (2) , injection (3), holding pressure (4), plastification (5), material intake (6), injection unit moves back (7), cooling (8) and tool opening (9)

Mo explains specific aspects of dosing

  …


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58

What needs to be taken into consideration during initial or refilling of drying bins?

The dryer air flows through the granulate from below; in the newly filled bin on the left the material is still moist (blue), in the right bin dried material (green) in the bottom of the bin is ready for use after the staying time is completed. (Image: Motan-Colortronic)

In the newly filled bin on the left the material is still moist (blue), in the right bin dried material (green) in the bottom of the bin is ready for use. …


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12

Dosing technology sum-up

 

This ULTRACOLOR dosing and mixing unit, shown in the medical version, is a gain-in-weight system.

This ULTRACOLOR dosing and mixing unit, shown in the medical version, is a gain-in-weight system.

mo explains: There are so many dosing and mixing concepts that it’s easy to get confused. …


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