Problem:
Geary’s Bakeries, one of Britain’s best known craft bakeries, needed to ensure that seed toppings would consistently adhere to baked goods. A key market segment for Geary’s is sandwich production, which requires that rolls are sliced, buttered, filled and then repacked before sale. Ensuring that seeds adhere to the rolls throughout this process is an important measure of product quality. Precise application of water is critical for proper seed adhesion. Too much water can cause the
seed to sprout and too little water results in the seed falling off. Previously used automated systems hadn’t worked consistently, often spraying too much or too little water. Because of quality concerns, Geary’s had returned to the time-consuming, manual process of dipping each
dough ball in water and then pressing it into seeds before proofing. With weekly demand for seeded rolls in excess of 200,000 and increasing, the bakery needed to increase production speed while maintaining high quality standards.
Solution:
An automated spray system utilizing Pulse Width Modulated (PWM) flow control now applies the water, eliminating over- and under-application. The system applies a precise volume of water to the rolls and automatically adjusts the flow rate for variations in line speed.
Spraying Systems Co.’s solution uses a wall-mounted AutoJet ® Model 1550 Modular Spray System with PulsaJet® automatic spray nozzles. The system’s spray controller allows operators to conveniently set the delay time between detection of the leading edge of the baking tray and when the nozzles spray. The duration of the spray time for various baked goods is also easily set. Accurate control of these operating parameters ensures precise coverage of the rolls every time.
Results:
Using the AutoJet® Modular Spray System as a key component in its new seeding line, Geary’s Bakeries has reached new levels of product consistency and can apply seeds five times faster. Geary’s managing director says, “We can put a tray of 18 to 24 rolls through the new wetting/seeding line every 20 seconds – an average of 1 second per roll compared with 5 seconds when each roll was individually dipped.” The spray system, including a stainless steel pressure reservoir, two PulsaJet® nozzles and a controller incorporating Spraying Systems Co.’s dedicated software, was a small portion of the capital equipment cost for the new line. The payback on the total investment for the spray system plus the new conveyor and seed applicator was under three months.
Spraying Systems Co. has the right nozzle for your spray application, with nozzles readily available in thousands of sizes, hundreds of configurations and dozens of materials. Our innovative spray nozzles are designed to improve efficiency – from quick-change nozzles that require no tools for installation to anti-bearding nozzles that increase throughput.
Our in-house spray fabrication experts design and fabricate custom lances, manifolds and shower headers. Custom solutions can optimize spray performance, improve product quality, simplify system installation and minimize physical changes to existing operations. Choose from applications in every industry. Visit us at www.spray.com or call us on +27 11 618 3860
