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This results in high and excessive raw material costs to our customers. This excessive material usage is almost always a minimum of 10 percent and frequently much more.


Indeed, excess masterbatch usage of between 20 and 50 percent is not uncommon, resulting in inconsistent product quality, function and form.


In contrast a gravimetric blender solves the problem of incorrect dosage as it automates the job of calibration and correction by it checking and adjusting addition rate every cycle.


Furthermore gravimetric blending facilitates the blending of multiple materials with different and/or variable bulk density.


The relative merits of principal blending methods Distribution


Consistency Hand Blending


Tumble Blending


Volumetric Blending


Gravimetric Blending


Poor Good Good Good Poor Poor Good Good Risk of Separation High High Low Low


Risk of Error High High Low Low


Capital Cost Low Low Medium High


Life-time Cost High High High Low


Plastribution is the UK’s leading distributor of plastics raw materials, delivering reliability, know-how and true business partnership to the world’s best polymer suppliers and our UK customers.


In the event that you require further information about the colouring of plastics, please do not hesitate to contact a member of the Plastribution team for further information by emailing sales@plastribution.co.uk or phone 0845 3454560


© Plastribution Limited. All rights reserved. 2011


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