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How to reduce the drawing problem of packaging hot melt adhesive? The manufacturer’s downtime may come at a high cost. Preventing production issues and maintaining production line operation are crucial for brand owners. Threading is a common issue that affects consumer packaging. Reduce the drawing of hot melt packaging adhesive by making some easy to implement changes to three variables (equipment, environment, and adhesive).
Equipment: Check the settings every time the production line is changed
1. Check the position, angle, temperature, nozzle size, and condition
2. Confirm that the nozzle head is not blocked and in good condition
3. Check the distance between the nozzle and the substrate to determine if it can be reduced
4. Check the filter and hose to confirm that there is no accumulation or carbonization
5. Check the solenoid valve and fuel tank pressure
Environment: Environmental temperature and airflow can impactPackaging hot melt adhesive
1. Reduce direct airflow to avoid high viscosity and premature adhesive drying
2. Review the airflow in the production area to ensure that the fans and; HVAC The system will not directly blow towards the application point. This is more critical in applications where the distance between the nozzle and the package is large.
3. Substrate temperature is also a factor
Adhesive: Specific operating parameters are set by the formula
1. Check if the temperature of the hot melt tank is correct. If the hot melt adhesive is too sticky, the temperature may be too low
2. If the applicator and hose are not hot enough, please confirm to set the applicator temperature according to the recommended operating instructions, and then the adhesive will start to cool when moving from the can to the applicator
3. Confirm with the adhesive supplier that the correct adhesive has been used in the application. Some adhesives are easier to draw than others.
What is the softening point The softening point ishot melt adhesive pelletsThe temperature at which a solid state transitions to a soft plastic state is typically measured using the globe method. It directly affects the heat resistance, curing speed, operating temperature window, and storage requirements of the adhesive particles. When selecting, looking at the softening […]
The raised edges after composite should not be directly attributed to glue. This article investigates the interfaces of substrate, coating, composite, and curing one by one, helping to narrow down the scope of problems in packaging production sites. Core keywords: packaging composite adhesive, edge warping, composite process, substrate surface Sunlife The edge of the composite […]
There is no separate “drop standard” for sealed hot melt adhesive particles, and the industry is concerned about itWhole box drop test——If the sealed cardboard box is dropped according to the national standard/transportation standard and the glue seam does not open, it is qualified. The core reference is GB/T 4857.5 Drop test, as well as […]
Conclusion: Complianthot melt adhesiveParticles are basically non-toxic at room temperature, and the risks mainly lie in “high-temperature melting” and “ingestion” Conventional EVA and APAO based hot melt adhesive particles are 100% solid content, solvent-free bulk adhesives that are stable at room temperature, non-volatile, and safe for daily contact and storage. What really needs to be […]
