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The importance of product packaging is twofold: it helps maintain the safety and reliability of the contents and provides consumers with attractive products. The packaging process is one of the most important stages in product manufacturing and distribution. With decades of experience as a packaging hot melt adhesive manufacturer, Sunlife Hot Melt Adhesive is delighted to have the opportunity to share its professional knowledge with customers.
In the flexible packaging industry, speed is of paramount importance, and hot melt adhesive is the preferred technology. However, high production speed sometimes introduces a potential side effect called pulling. When the extruded packaging hot melt adhesive is not completely separated from the nozzle tip, wire drawing occurs, which can cause fine hot melt adhesive strands to interfere with the sealing process of the assembly line. These filaments can be stacked on application devices and present the appearance of ribbons or angel hair as described by the user.
The main reason for pulling wires is:
The application temperature of the extrusion tip is too low. The adhesive is too thick. The application tip is too far away from the surface of the substrate.A simple adjustment is to slightly increase the temperature of the hose and nozzle – by 5 ° C each time. The next adjustment is to bring the tip of the nozzle closer to the surface of the target substrate. If possible, adjust the solenoid valve pressure at the tip of the applicator, but if this is not helpful, clean or replace the nozzle to clean the cut-off. Finally, it is recommended to install the fan or
The airflow of HVAC circulation is redirected away from the application area.
Eliminating wires will reduce downtime, defect count, and avoidable waste during cleaning. This can be achieved by selecting suitable hot melt adhesives for the packaging industry, optimizing application equipment settings, and controlling the workplace environment.
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