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Supporting Info

Material hopper loadersare used for transferring plastic raw material between storage hoppers and/or material storage containers. This may involve transfer from a material storage bin to a machine in-feed hopper, or to and from a material drying station. Single phase units are usually used for low to medium duty applications, whereas heavier duty three phase units are often used where higher rates of material transfer are involved, movement is over larger distances, or material is difficult to handle.

Material dosing units are used for adding a set amount of a single additive (a fixed percentage of colour masterbatch for example) to a base raw material. Units are typically located between the main material in-feed hopper of a machine and the machines ‘throat’. Cheaper Volumetric units use a small auger type screw that runs for a set amount of time at a constant speed. More accurate Gravimetric units work by weighing the additive.

Gravimetric Blenders can be specified to weigh and also mix a number of additives into the primary raw material. These units are typically machine mounted and have a number of hoppers, one for each additive and one for the primary material.

Centralised Material Feed Systems A Central Material Feed System, also known as a Material Handling System, allows polymer to be automatically distributed to your processing machines; such as injection moulding machines and extruders, sometimes long distances, through a series of solid pipes using a centrally positioned vacuum pump.
Vacuum Receivers (Hopper Loaders) on all machines are linked via a central control system that enables any machine to process any material from various locations. Material is generally sited away from the production area. Drying, blending and scrap reclaim can also be integrated into a Central Feed System.

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