COLOUR | PIGMENTS
Right: CamoTek concentrates enable variegated colours to be produced even on processing equipment with optimal mixing
performance
automated plant for manufacturing liquid colorants and additives for plastics. Housed in an 18,580m2 facility at High Point, in North Carolina in the US, the new facility incorporates automated production of pigments and their dispersion in liquid carriers. “While the standard industry practice is to use the same equipment and containers for multiple colours, Riverdale Global is building dedicated hoppers, augers, and containers for each pigment, eliminating the need for cleaning when switching from one pigment to another,” says Riverdale Global President Paul Maguire. The containers all have built-in pigment mills and dispersion blades and remain closed and sealed to prevent cross- contamination and material waste. The containers allow the combination of any of 100 pigments with various types of liquid carrier to produce single-pigment dispersions (SPDs). Riverd- ale Global has hundreds of SPD formulations in its database. The SPDs are shipped to satellite plants where they are custom-blended for local custom- ers. Maguire says the new operation makes possible real-time inventory control that will reduce order lead times and allow for automatic traceabil- ity with raw material lot numbers. The company also offers a no-cost colour-track- ing capability that uses data from liquid-colour metering devices to automate many of its custom- er’s purchasing, production management, and compliance functions. The GlobalTracker system also makes remote troubleshooting possible. The system uses transmission boxes at the customer’s plant that receive data from the control- lers on liquid colour metering devices and transmit it to Riverdale Global via the internet or a cellular network. Software on the company’s server tracks the customer’s material usage and records job- specific data such as operator ID, work order, lot number, and colour ID. Customers can also obtain information on open, invoiced, and paid orders, search their order history by order or production job, see their current colour match status, submit
Right: Lioplax special-effect masterbatches (available in liquid and solid forms) yield an adjustable frosted finish to PET bottles
new colour matches, and document production runs for compliance with job specifications or regulatory requirements.
Variegated effects New concentrates for polyolefins from Teknor Apex enable injection and blow moulders to create variegated colours for aesthetic and functional effects in products used both indoors and outdoors. The concentrates, which were introduced at the NPE show earlier this year, contain proprietary formulations that yield mottled, swirled, streaked, or other variegated effects in products moulded on standard equipment. They can be used to impart decorative patterns and camouflage effects. “In the past, variegated effects were easy to
achieve, but this is no longer possible with today’s modern processing equipment,” says technical manager John Wood. “Improvements in screw design and mixing have defeated the old methods. CamoTek concentrates, combined with appropriate changes to process parameters, make such colours possible again.”
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.dominioncolour.com �
www.pigments.com (Lansco Color) �
www.ferro.com �
www.cappelle.be �
www.milliken.com �
www.dyes.com (Keystone) �
www.clariant.com �
www.basf.com �
www.lanxess.com �
www.toyo-color.com/en �
www.riverdaleglobal.com �
www.teknorapex.com
24 COMPOUNDING WORLD | September 2018
www.compoundingworld.com
PHOTO: TOYOCOLOR
PHOTO: TEKNOR APEX
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