Goya Foods ups output with16 automated bulk bag dischargers

Founded in 1936, Goya Foods is the largest Hispanic-owned food company in the US. It imports ingredients from around the world to create more than 2,500 food products of Latin cuisine traditional to Mexico, Spain, Central and South America, and the Caribbean.

Goya Foods packages beans, rice mixes, corn meal and other dry products packaged at its new facility in Secaucus, New Jersey, US.

In 2015, the company opened its new headquarters and distribution center in Jersey City, New Jersey.  At the same time, it invested in its existing distribution center in Secaucus. At 22,300 sq m, the new site is four times larger than the previous facility and relieves several long-standing bottlenecks, said Luis Valencia, the new site’s Plant Engineer.

“We had run out of capacity for rice mixtures at our previous site. In fact, all of the existing lines, including the bean and flour lines, were over-utilised. We were overdue for a change.”

Higher capacity equipment in four times the space

To prevent supply disruptions, Goya continued operating all 12 of its rice, bean and flour lines at the previous site while outfitting the new site with a new high speed pouch filling rice line, and more efficient bulk handling and packaging equipment, including 16 bulk bag and rigid tote IBC discharger systems supplied by Flexicon Corporation.

“We had Flexicon equipment here already, so we knew they were reliable systems,” Valencia said.

"Efficiency is the focus because the product and process demand it," he added. "The processes are relatively uncomplicated, so the simpler the process, the higher our efficiency must be. We’re always looking to increase quality, safety and efficiency.”

A bucket conveyor moves material from two bulk bag dischargers and one rigid tote discharger through the wall of a packaging room, to a weigh hopper that feeds a pouch filler.

Cutting bulk bag unloading times

Goya receives rice, beans, dry vegetables and flour in 998 kg bulk bags, while the spice mixtures are mixed into rigid 498 kg totes. Ingredients are batched to the packaging machines by gain-in-weight control.

To increase productivity, Goya needed to accelerate its handling of bulk bags. The Bulk-Out® BFC bulk bag dischargers load bags quickly by means of a cantilevered I-beam, hoist and trolley. Valencia says the fast-loading units allow just two forklift drivers to serve the site's 16 bulk bag dischargers. A single operator can load and discharge bulk bags across several product lines.

In operation, a forklift places a palletised bulk bag in front of the discharger. The operator connects the bag loops to Z-Clip™ bag strap holders on the lifting frame and, using a pendant, hoists the bag into the discharger.

A cantilevered I-beam with hoist and trolley allows bags to be raised and rolled into the discharger using a pendant.

Rice mixes batched to high-capacity pouch filler

To match the production capacity of a new high speed pouch filler for rice mixes, Goya installed a gain-in-weight batching system for the rice, vegetable and spice components. For rice, palletised bulk bags are delivered by fork truck to side-by-side BFC bulk bag dischargers that unload into two large 2,268 kg capacity floor hoppers. The hoppers feed a common 6 m long bucket conveyor leading to a weigh hopper which empties into the pouch filler. Each discharger unloads a 998 kg bulk bag of rice in 4 minutes.

Similarly, dry vegetables move from their respective bulk bag discharger to the pouch filler via bucket conveyor and weigh hopper.

Each weigh hopper rests on load cells that transmit weight-gain signals to a controller that stops each conveyor once the target weight is reached for each ingredient, automating and expediting a process that previously required manual verification that batches reach the pouch filler.

Spices for the rice mixes are supplied in rigid totes, which are hoisted above a Model BFH-C-X half frame discharger mounted on a 1134 kg capacity hopper. From the hopper outlet, a 7.6 m long flexible screw conveyor, also from Flexicon, is inclined at 32 degrees, moving the spices to a weigh hopper which discharges to the pouch filler.

A flexible screw of specialized geometry for difficult-to-handle spices rotates within an 11.4 cm polymer outer tube of the flexible screw conveyor. The screw is the only moving part contacting material and is driven beyond the point of discharge, preventing material contact with seals or bearings.

“Goya Foods Secaucus has received an A++ rating by the British Retail Consortium’s certified auditors, the highest, for two years in a row,” says Valencia, adding, “In this case the conveyor is sanitised daily by disconnecting the flexible screw from the drive shaft and removing the screw for cleaning.”

The plant specified Flexicon flexible screw conveyors for both the rice mix spices and flour lines because they are enclosed, simple, dust-tight and prevent the separation of blends.

Flexible screw conveyors transfer rice blend ingredients from two bulk bag dischargers through small openings in a wall separating the warehouse from a packaging room.

Flexible screw conveyors transfer ingredients from bulk bag dischargers in the warehouse, through a packaging room wall, and transfer into horizontal flexible screw conveyors that feed packaging machines. The screws are driven beyond the point of discharge, preventing product contact with seals or bearings.

Bean and flour lines operate at high capacity

The bean line deploys six BFC model bulk bag dischargers, mounted over 2,268 kg capacity floor hoppers and arranged in three pairs. Each pair shares a bucket conveyor that feeds a weigh hopper which discharges into a pillow-bag packaging machine.

The flour line employs three BFC bulk bag dischargers, each with Flow-Flexer™ bag activator plates that increasingly raise and lower opposite bottom edges of the bag on timed cycles, ultimately forming a steep "V" shape that promotes total discharge.

Dialing it in

Goya Secaucus packages products of 50 different varieties of beans and 30 different flours. Each has slightly different flow characteristics. “We change over constantly, and when you change a bean or a flour or a rice mix, there’s a lot of fine-tuning,” Valencia said. Fine flours are among the tougher products.

“It’s a challenge to dial it in; the higher the speed, the more precision is required. Flexicon helped us with upgrading our electronics. They made sure the dischargers were feeding correctly and the controls were reading the hopper levels correctly. We control the weights better now and avoid process loss,” Valencia said.