Plastics production

FAQ for Experts. Answers by Experts.

49

How can material stress be reduced during conveying?

The image illustrates the concept of the control: For a smaller material feedline (ø=45 mm) a reduced blower speed (here: 38 Hz) is sufficient; respectively, an increased blower speed is needed for larger feedline

The image illustrates the concept of the control: For a smaller material feedline (ø=45 mm) a reduced blower speed (here: 38 Hz) is sufficient; respectively, an increased blower speed is needed for larger feedline

mo explains how material can be conveyed gently
In issues 35 and 37 we described some different forms of abrasion and signs of wear, as well as listed some possible precautions to reduce wear and abrasion. …


Read More

45

How can disturbances in the vacuum supply be avoided?

A standby pump replaces the line pump in case of disturbance or servicing

A standby pump replaces the line pump in case of disturbance or servicing 

mo explains measures to maintain the vacuum

Disturbances in a conveying system can lead to expensive production downtimes. …


Read More

44

What is to be taken into account with regard to the material discharge?

Various concepts of the material discharge flapsmo describes various concepts of the material discharge flaps

One task of the material supply is to convey material to the hopper loader on the processing machine. …


Read More

43

How is the plastic granulate separated from the conveying air?

By increasing the line diameter of the material line (d1) to the internal diameter of the hopper loader (d2), the air speed (red arrows) decreases, while the air volume (yellow arrows) remains the same

By increasing the line diameter of the material line (d1) to the internal diameter of the hopper loader (d2), the air speed (red arrows) decreases, while the air volume (yellow arrows) remains the same 

mo reveals the secret of the “suspended plastic granule”

In the broadest sense, operation of a hopper loader can be compared with a vacuum cleaner – but with one significant difference: …


Read More

42

How can metallic impurities be eliminated?

The separator shown is installed directly on the extractor of the processing machine. Its sturdy design allows installation of further peripheral units, such as conveying, dosing and mixing units. Via the control unit, the separator can be adapted to the intrinsic conductivity of the material to be inspected (e.g. additives with metal oxides or rust).

The separator shown is installed directly on the extractor of the processing machine. Its sturdy design allows installation of further peripheral units, such as conveying, dosing and mixing units. …


Read More

41

How can noise emissions during material handling be reduced?

„Pipe within a pipe system“; the inner pipe is used as the material feed line, the air-filled space in-between the pipes reduces noise emissions and prevents pre-warmed, dried material from cooling

„Pipe within a pipe system“; the inner pipe is used as the material feed line, the air-filled space in-between the pipes reduces noise emissions and prevents pre-warmed, dried material from cooling (image: …


Read More

40

What is a permanent central vacuum?

Example for a permanent central vacuum, installed in motan-colortronic’s new Tech Center in Friedrichsdorf: in the centre two central filters, left two side channel blowers on top of each other

Example for a permanent central vacuum, installed in motan-colortronic’s new Tech Center in Friedrichsdorf: in the centre two central filters, left two side channel blowers on top of each other

mo explains the characteristics and advantages of a permanent central vacuum
For large productions with numerous material loaders and consequently many delivery points, large throughputs, frequent conveying cycles, and long conveying distances, there are two solutions for automated material supply: …


Read More

39

Which processes are important for material conveying?

Material loader with adjustable fill level sensor (on the glass cylinder) and outlet flap with sensor

Material loader with adjustable fill level sensor (on the glass cylinder) and outlet flap with sensor 

mo explains: what is important to consider for time or sensor conveying
The principle of suction conveying relies on the vacuum pump generating a vacuum that is great enough to range through the material feed lines and the material loaders to the material feed. …


Read More

38

How do the various vacuum generators differ?

Central vacuum generation station with side channel blowers and safety filters in the background

Central vacuum generation station with side channel blowers and safety filters in the background

mo briefly presents the most commonly used vacuum generators in the plastics industry

Part of the heavy workers of pneumatic suction conveying – the precise term for the most important conveying method in plastic processing – are without a doubt the vacuum generators. …


Read More

30

What happens with the dust in the conveying system?

Filter: Central filter system with dust collection

Filter: Central filter system with dust collection

mo explains explains security measures against dust contamination

Dust particles can cause a variety of problems in plastics processing, from quality loss and waste to problems during processing. …


Read More

We use cookies to enable you to make the best possible use of our website and to improve our communication with you. With your consent, you accept the use of cookies in accordance with our privacy policy.

Privacy Settings saved!
Your cookie settings for this website

We use cookies to make the best possible use of our website and to improve our services with you. Make your personal preference here:

These cookies are used for functions of this website that allow you to tailor your use to your interests. Furthermore, the analysis of user behaviour also helps us to improve the quality of our website.
  • _ga
  • _gid
  • _gat

These cookies are used for functions of this website that allow you to tailor your use to your interests. Furthermore, the analysis of user behaviour also helps us to improve the quality of our website.

Decline all Services
Accept all Services