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products | Machinery and software MATERIALS HANDLING Conair improves flake feeding

Conair has introduced two new developments for its TrueBlend blending systems to improve the handling of flake recyclate and other difficult-to-feed regrind materials. “Certain thin, flaky regrind

– like PET bottle scrap or thicker film and sheet scrap – has granules with relatively large, flat surfaces so they tend to pack together and bridge in conventional hoppers,” says Conair’s blend product engineer Jeff Bickel. The TrueBlend range uses

two different approaches to overcome feeding problems. For smaller throughput quantities, the units can be fitted with side feeders with steeply angled sides that help prevent regrind from hanging or bridging. The material can then flow easily

SOFTWARE Rowa completes its ERP integration

Germany’s Rowa Group says the integration of its Infor Blending Lab information and Management System (LIMS) into its ERP system is now complete, improving manage- ment of its quality systems. According to the company, the LIMS system allows customer-specific test profiles - which may deviate in either test criteria or in threshold values - to be created, recorded and recalled for subsequent testing. This


speeds up the administration and management of the entire testing process. The LIMS system also allows test compliance certificates to be generated for every product delivery and incorporated into the documents delivered to the customer. “LIMS records all control

results on a product, customer and batch basis, and manages them in a central database, which the ERP accesses. This means, among other things,


that ‘blending’ only releases a batch for delivery when all tests have been completed and fully documented”, says Wulf Hagemeister, technical manager at Rowa Master- batch.

“Because the system

makes all data for a product centrally accessible and interlinked, we can conduct statistical comparisons of the performance of different product batches quickly and comprehensively. We can thus

gain important data relating to the entire product history, such as the quality of the raw material deliveries. We can then assess this data and integrate our findings into production planning and control,” he says. The LIMS ERP integration

project commenced in September 2011, with the roll-out scheduled to take 12 months to complete. ❙

through an oversized opening at the base to a horizontal auger that positively conveys it to the mixing chamber. Where high volume

throughputs have to be accommodated, the company uses lift augers positioned at an angle in a corner of the regrind bin (pictured). Instead of forcing the material into the base of the bin, these lift it to

avoid compaction in the feed zone. According to Conair, this allows the flake to flow easily through into the mixing chamber. TrueBlend units are

available to handle through- puts of less than 23 kg/hour on the smallest TB45 unit to 5,455 kg/hour on the largest TB3500 models. They can be supplied with up to 12 ingredient bins. l Conair has also introduced the new TrueFeed LQ liquid feeder for handling liquid colours and additives. The unit

uses standard peristaltic pump dosing but the liquid container is mounted on a load cell to provide real-time loss-in-weight dosing. Conair claims the improved accuracy can enable significant savings on costly colorants. ❙


Kreyenborg upgrades mixer at Ponachem

Hamburg, Germany-based compounder Ponachem has slashed mixing times and reduced energy consumption from its 20-year old silo mixer system after Kreyen- borg upgraded its pipe auger to an open mixing screw. Kreyenborg Plant

Technology replaced the original pipe auger in the 20 m3

silo with an open mixing

screw incorporating a special segment design. The result was that Ponachem gained a reduction in the required mixing cycle for its plastic regrind from 4 hours to just 20 minutes. Similar results can be achieved with any free-flowing material, says Kreyenborg. ❙

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