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01 - What is meant by “dosing” in the context of injection moulding?

mo explains: Dosing is a way of combining two or more components in the right ratio

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02 - What is the difference between volumetric and gravimetric dosing?

mo explains: A volumetric system doses material according to the space it occupies i.e. its volume; a gravimetric system determines the amount of material to be dosed by weight

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03 - How do the various types of dosing devices work (1)?

mo explains: The choice of dosing devices depends on which materials and method you are using, and what throughput you require

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04 - How do various types of dosing device work (2)?

mo explains: The choice of dosing device depends on which materials and method you are using, and what throughput you require

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05 - Why do volumetric dosing units need calibrating?

mo explains: In volumetric dosing, the output is not weighed – which is why it is important to establish a link between the volume of material being dosed by the unit and the…

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06 - How do asynchronous dosing systems work?

mo explains: With asynchronous dosing the individual material components of a recipe are dosed in portions independently from the processing machine cycle, therefore an additional…

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07 - How do volumetric synchronous dosing units work?

mo explains: Synchronous dosing stations meter all components simultaneously. The mass flow corresponds to the recipe at all times, and there is no need to actively blend the…

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08 - What is the “gain-in-weight” Method in the context of gravimetric asynchronous dosing?

mo explains: Gravimetric asynchronous dosing stations meter the components of a mixture into a weighing chamber one after another. As each ingredient is added, the system measures…

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09 - How do “loss-in-weight” dosing systems work?

mo explains: In the context of continuous gravimetric dosing, “loss-in-weight” systems work by weighing the entire dosing module – the dosing hopper and its contents, the dosing…

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10 - Why do we mix materials when dosing? And what should we keep in mind?

mo explains: Separately dosed materials need to be correctly mixed to ensure that plasticisation results in a homogenous output material

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