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Many book binding workshops have provided feedbackhot melt adhesive pelletsThere is a pungent odor after heating, and employees feel uncomfortable working in this environment for a long time. This issue is worth taking seriously – there are indeed industry standard restrictions on the smoke odor of hot melt adhesive particles.
| indicator | Ordinary EVA type | Low smoke and low odor type |
|---|---|---|
| Operating temperature | 170-190°C | 150-170°C |
| Visible smoke | moderate | very few |
| Odor Level | Level 3 (obvious) | Level 1 (almost imperceptible) |
| VOC release | higher | extremely low |
| price difference | benchmark | About+10% |
The workshop has good ventilation, and employees do not stay on the glue pot for long periods of time. The ordinary type has a higher cost-effectiveness. Closed workshops and small graphic stores → significant improvement in low smoke and low odor models. Sunlife offers two types of hot melt adhesive granules, choose according to your needs.
Q: Does the strong smoke smell indicate that the glue temperature has been set too high?
A: Very likely. After exceeding 180 ° C, the thermal decomposition of EVA hot melt adhesive particles accelerates, and the smoke smell increases sharply. First confirm if the glue temperature exceeds the standard before considering changing the model.
Q: Will the low smoke type have lower adhesion than the regular type?
A: I won’t. The formula of the low smoke type has optimized the ratio of resin and tackifier, and the bonding strength is equivalent to that of the ordinary type, but the operating temperature is lower.
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