How to deal with hot melt adhesive particles burning and smoking? The complete steps of cooling down first and then troubleshooting

How to deal with hot melt adhesive particles burning and smoking?

First, give the order of disposal:Immediately lower the temperature of the glue pot by 20 ℃ → exhaust and ventilate → stop adding new glue → remove the coking glue from the pot → check if the temperature control is malfunctioning again.The essence of smoking is that the colloid exceeds the decomposition temperature and begins to pyrolyze. Continuing to harden will cause carbonization, slagging, nozzle blockage, and even trigger a smoke alarm. The complete steps for handling such issues through the Guangzhou Sunlife Business Technology Hotline are as follows.

Five step disposal process

1. cool downRegardless of the displayed temperature, lower it by 20 ℃ first. If there is still smoke after cooling down, it indicates that the actual pot temperature is much higher than the displayed temperature, and the temperature control probe or solid-state relay may malfunction.
2. improve air circulationTurn on the exhaust and avoid direct inhalation of smoke by personnel; Although EVA pyrolysis flue gas has low toxicity, prolonged inhalation can still irritate the respiratory tract.
3. Stop material supplyWhen smoking, do not add new rubber particles to suppress the odor. Covering the coke with new rubber will cause the carbonization layer to accumulate thicker and thicker.
4. Clear the potAfter the temperature drops to the operating temperature, scoop out the black haired and charred colloid, soften the burnt residue on the pot wall with a special cleaning agent, and scrape it off.
5. VerificationCompare the actual temperature inside the pot with the displayed temperature using an external thermometer. If the deviation exceeds 10 ℃, replace the temperature control probe.

Comparison of smoking causes

Frequently Asked Questions

Q: Can the glue still be used after smoking?
Slight green smoke and no change in gel color can continue to be used; The adhesive strength that has turned black and thickened has significantly decreased, and it must be removed.

Q: What kind of rubber particles are not easy to smoke?
The formula with good thermal stability and complete antioxidant system allows for longer continuous melting time. Sunlife hot melt adhesive books, magazines, and sealing series all indicate the longest retention time, and operating according to the standard will not burn the adhesive.

Q: Do I need to scrap the entire pot?
Not necessarily. Clean the coke first and then take a sample for adhesive testing. If the strength is normal, the base adhesive can be retained.

Remember the mnemonic: One drop, two connections, three stops, four clearances, five verifications, burning glue and smoking can be solved on duty.