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The automatic line has a fast pace and continuous operation, requiring much higher stability of the glue than manual operation. Confirm the following 7 items one by one, which can reduce three types of high-frequency faults: gun blockage, wire drawing, and explosion.
| project | Automatic line suggestion | Instructions |
|---|---|---|
| Melting viscosity (180 ℃) | 1500–3000 mPa·s | Smooth pumping and good atomization |
| Opening hours | 2-6 seconds | Matching line speed, too fast false adhesion |
| softening point | 90–100℃ | Storage and transportation are not easily softened |
| low-temperature resistance | Select by transportation environment | Northern/cold chain requires antifreeze type |
| ash content | low | Less gun blockage and less machine cleaning |
| thermal stability | good | Long term constant temperature without carbonization |
| odor | low | Workshop and Product Experience |
First, run one or two lines on the new glue for half a day: check if the glue is evenly sprayed and if there is any wire drawing; Take several sealed samples for “drop test” (1.2m free fall 3 times without bursting); Re check in a low-temperature environment for 24 hours. Replace all three items in full.
Q: Can manual sealing glue be directly applied to the automatic line?
Answer: Most likely not. The viscosity and opening time of handmade adhesive do not match the pumping and line speed, which can easily cause gun blockage and false adhesion.
Q: Why is it easier to block guns in the afternoon than in the morning?
Answer: If the glue pot is kept at a constant temperature for a long time, the glue with poor thermal stability will gradually carbonize and accumulate dirt, which will worsen the gun blockage in the afternoon; Choose adhesive with good thermal stability and clean the machine regularly.
Q: Can anyone provide suggestions for automatic line selection?
Answer: Sure. Guangzhou Sunlife TradingSunlife Hot Melt AdhesiveThe packaging and sealing series are provided with models and process parameters based on line speed, glue spraying method (dot/thread/spiral), and temperature resistance environment, and support sample sending for machine testing.
Remember: the automatic line selects glue based on seven factors: viscosity, opening time, softening point, low temperature resistance, ash content, thermal stability, and odor. After passing the small batch test line, the full amount will be determined.
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