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Polymer/Pigment Dispersion in Textile Manufacture

From Silverson Machines, Inc.

A textile manufacturer was faced with a dramatic increase in demand for one of their most popular products which required spinning a second line of fiber. The existing equipment used to produce the pigment and polymer paste was not capable of supporting the two line rate, so the company set up a product development team to investigate methods of increasing capacity without compromising quality.

A Silverson In-Line mixer was provided for on-site trials. Because of the extremely high degree of mechanical energy required to produce the paste, a Multistage In-Line mixer was used. The workhead comprises two concentric sets of blades and teeth running against two separate stators. This produces intense high shear, resulting in substantially faster mixing times. During the testing program a number of options were examined, including installation of the In-Line before and after milling, and in a separate recirculation system. For a two week period the In-Line mixer was used on its own, eliminating the vibromills altogether, with acceptable results.

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