Colloid Mill Case Study – Pigment Dispersions

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The Problem: Inconsistent Colorant Caused by Pigment Production Methods

A manufacturer approached Sonic with an application to disperse and de-agglomerate a pigment used to color a plastic part they were manufacturing. The pigment would agglomerate and cause color bursts inside the plastic. While there was no damage to the integrity of the product, the color appeared inconsistent and was perceived by the end-user as problematic. The application was defined as a 4-5 gallon per month run of pigment in a carrier medium.

The Solution: A Lab Scale Colloid Mill

After initial trials at the Sonic lab which showed improvements in the pigment dispersion and eliminated the inconsistent color, Sonic recommended a 2.5” lab scale colloid mill for the dispersion application.  This scale colloid mill would more than handle the low volume demand for colorant.

Upgraded Equipment for Increased Demand

After installation of the colloid mill, the client’s demand increased appreciably within the first six months. It was obvious to the manufacturer and Sonic that the duty for the mill had changed dramatically and the production capacity of the 2.5” mill could not handle the job.  Sonic issued a full credit for the purchase of the 2.5” mill toward purchase of the production scale 4” RotoMillTM Colloid Mill. This mill was designed to handle the new demand with plenty of capacity for the future.

Sonic now has a used 2.5” mill in inventory and a very pleased client. In general, Sonic does not enter the used equipment market, because we manufacture and sell new equipment. However, in this case, serving the best interests of our client meant gaining a lightly used 2.5” mill. Standing behind our customers is not just an idea on a poster at Sonic – it is how we operate day to day for over 50 years.

Above: Images of used 2.5″ lab scale Colloid Mill 

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About the Author:

Rob Brakeman
Owner & Director