InvisiPac hot melt delivery systems

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Graco’s InvisiPac tank-free hot melting system outperforms all existing tank and tankless systems on the market. With a true melt-on-demand design, the InvisiPac system delivers guaranteed savings and optimizes production. It makes your case and carton sealing operations more reliable, faster, safer, and more cost-effective.


With an industry-leading start-up time of just 10 minutes, InvisiPac tank-free technology results in a 48% reduction in start-up energy, helping you to achieve your sustainability goals. In addition, InvisiPac reduces adhesive usage by a minimum of 30% and potentially up to 70-80%. It also eliminates unplanned downtime caused by adhesive charring, nozzle plugging, and hose issues.


The InvisiPac Hot Melt System keeps adhesive at a consistent temperature and viscosity. By avoiding temperature fluctuations and the formation of char, the material output remains constant during production hours with zero downtime. The InvisiPac applicator’s integrated module filtering eliminated plugged nozzles and a consistent bead of adhesive on every box. Track adhesive usage, system performance and line data from anywhere at any time to achieve your Industry 4.0 initiatives.


As operators have no direct contact with the hot molten adhesive, the InvisiPac system eliminates safety hazards such as burning, toxic fumes and slippage. When the adhesive inside the melter reaches a certain level, a signal is automatically sent to the feeding system, causing adhesive to be sucked from the container directly into the melter-all without operator intervention.

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