New gravimetric blenders dispense up to 12 ingredients; accommodate virgin and recycled materials

A new series of gravimetric blenders for large-throughput applications precisely dispenses up to 12 different types of materials and can be configured to dose up to six major ingredients, including virgin polymer, regrind and post-consumer resin (PCR).

Maguire WSB 1200 blender
The new blenders enable processors working in a smaller throughput range to meet growing demand for products that incorporate regrind and post-consumer resin along with virgin resin. Image courtesy Maguire.

The Weigh Scale Blender (WSB) 1200 series from Maguire (Aston, PA) has a throughput range of 900 to 2,040 kg/hr (2,000 to 4,500 lb/hr) and is suitable for extrusion, high-volume injection and blow molding, and central blending applications. The series is the latest addition to Maguire’s WSB product range, which includes more than 120 models with throughputs ranging from 40 to 5,500 kg/hr (90 to 12,125 lb/hr).

The 1200 Series blenders can dispense as many as 12 batch ingredients, from pellets, powders and liquids to poorly flowing ingredients such as regrind, flake, wood flour and talc filler, said Maguire in a press release. Each ingredient hopper has a dispensing device designed for a material in a specific form. Like the larger units in the WSB-2400 and WSB-3000 series, the new blenders can be outfitted with up to six large-component slide gates for dispensing major ingredients, along with any combination of large corner valves (11,000 g/sec), 4-inch vertical valves (2,000 g/sec), 2-inch vertical valves (400 g/sec), auger feeders and liquid color pumps.

“By providing the same capability as the 2400 and 3000 Series units for dispensing up to six large-component ingredients, the WSB-1200 Series blenders enable processors working in a somewhat smaller throughput range to meet growing demand for products that incorporate regrind and PCR along with virgin resin,” said Frank Kavanagh, Vice President, Marketing and Sales. “Like all Maguire blenders across the throughput range, the 1200 Series WSBs provide consistent accuracy of ±0.1% for every material dispensed into the weigh chamber, regardless of its form.”

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