 | Why use Polymer Processing Aid Masterbatches : Polymer Process Aids (PPA) masterbatches are specifically designed to enhance extrusion ability of plastics (PE Films, pipes, tubes...) leading to PRODUCTIVITY and / or QUALITY improvement. If you are not using polymer processing masterbatches today in your film or pipe extrusion processing, you are probably missing great opportunities in getting higher quality products at lower cost. AddKan Polymer Processing Aid Masterbatches:- AddKan Polymer Processing Aid Masterbatches are manufactured to offer you :
During processing the applied shear-field causes the process aid to phase separate from the carrier polymer and migrate to the die wall gradually forming a continuous layer. Once the coating is complete, the backpressure of the extruder decreases to a minimum as the differential between the surface energies of the polymer and the coating allow for reduced friction during extrusion. Other additives in the system, such as pigments and anti-blocks, as well as process conditions affect the coating and removal rates. A number of factors affect the coating equilibrium including concentration, dispersion, throughput, viscosity, shear gradient and temperature. To achieve the coating in a reasonable time the process aid masterbatch is typically added at 1% until the beneficial effects are seen. After this the addition rate can be reduced to 0.5% down to even 0.25% as long as the effect continues to be evident. A small addition must be maintained as the coating is dynamic, with the polymer melt both abrading the coating and depositing further process aid. Normally there is a common practice to process at higher temperatures to get maximum out put which causes degradation, die deposition and reduction in mechanical properties. By adding PPA MB , processing is possible at lower temperature with higher output without compromising the mechanical properties We welcome you to please speak to our Marketing representatives for your specific requirements. We will be more than happy to cater to your needs. |
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