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Package integrity and tamper evidence are critical factors in pharmaceutical and personal care packaging, making hot melt adhesives a top choice for carton sealing and to secure package inserts.
Packagers can improve seal strength and reduce hot melt usage and costs by replacing adhesive beads with precisely-placed adhesive dots. Meler’s microprecision adhesive applicator utilizes advanced technology to accurately apply hot melt dots at high speed with repeatability and long term reliability, eliminating past barriers of converting from hot melt beads to dots.
The system‘s microprocessor-controlled timer and driver combine immediate signal response with device precision to apply 8,500 dots per minute with diameters as small as 1.125mm.
The high speed solenoid valve ensures the most consistent operation and dosing accuracy. The applicator has a robust design to provide extended cycle life, and features for reduced energy consumption include insulated pneumatic tubes and “Cool-Touch” insulated applicator covers.
An integrated filter keeps nozzles clean and is quickly changed without disassembling the hose or applicator. The compact applicator size ensures simple conversion from standard adhesive heads. Packagers will also save on equipment costs, as Meler technology is conservatively priced at 25 to 30% less than comparable dot application systems.
Adhesive bond integrity is important when sealing complex and multi-part pharmaceutical cartons and the applicator’s ability to meter hot melt dots with precision and spacing provides maximum sealing security.
For hot melt seals, the “start” of the bead is where the strength of the seal lies, and once broken, the seal integrity is compromised. Adhesive dots (or dashes) provide superior bonds by creating a new “start” at each dot, with the seal integrity intact until all the dots are broken.
Converting from beads to adhesive dots can reduce adhesive consumption up to 50%, greatly reducing consumable expenses.
