Guardian takes steps to protect quality Guardian Protective Devices manufactures pepper spray and offers contract packaging services to private label customers that require high-quality aerosols. Used by law enforcement, military agencies, security personnel and civilians, Guardian’s precision products offer personal protection. In August 2015, it installed an SST checkweigher from Mettler- Toledo Hi-Speed to help ensure final product quality by detecting and rejecting under- and overfilled aerosol cans and improve yields by using data from the checkweigher to calibrate their filler. 34 Spray February 2016 When Guardian initially decided to add a checkweigher to weigh every can on its existing production line, the search proved challenging. Most checkweighers require an existing line be cut and several feet of conveyor length added, and room at Guardian was tight. “We learned about the SST checkweigher, which has an extremely small footprint and could fit over our existing conveyor,” said Herb Schreiber, CEO of Guardian Protective Devices. “It’s the only suspended scale checkweigher on the market, to my knowledge. Our sales rep, Joe Young from Reliant Packaging Systems, was extremely helpful in getting us the right solution for our situation.” The Hi-Speed SST checkweigher has a patented side-grip weigh conveyor that slightly lifts each can off the line to determine the package weight and gently places it back on the conveyor while maintaining proper line spacing. This is different from other checkweighers, which use a weigh module under a conveyor belt and require three or more feet of floor space, according to Mettler Toledo. The SST’s design allows it to be cantilevered over an existing conveyor, eliminating the need for time-consuming and expensive line modifications. Guardian Protective Devices CEO Herb Schreiber. The Hi-Speed SST checkweigher lifts cans off the line to determine the package weight and places them back on the conveyor while maintaining proper line spacing.
Spray February 2016
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