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Firstly, the conclusion is that the construction temperature of low-temperature hot melt adhesive particles is usually between 110-150 ℃, which is about 30 ℃ lower than that of ordinary adhesive particles (150-180 ℃). The advantages are energy saving, equipment protection, reduction of burns and smoke, and it is suitable for thin paper, thermal sensitive materials, and high temperature sensitive scenarios; Ordinary rubber particles have a higher softening point and better heat resistance, making them more suitable for summer logistics and high load production lines. The two are divided according to materials and environment, not who eliminates whom.
| Comparison item | Low temperature hot melt adhesive granules | Ordinary hot melt adhesive granules |
|---|---|---|
| Construction temperature | 110-150℃ | 150-180℃ |
| energy consumption | Fast heating and more energy-efficient | Relatively high |
| heat resistance | Low softening point, afraid of high temperature environment | High softening point, more stable in summer |
| Applicable Materials | Thin paper, thermal paper, aluminum plated film and other heat-resistant materials | Conventional cardboard boxes, books, and cardboards |
| Homework experience | Low smoke and burn risk | Attention should be paid to high temperature protection |
Priority should be given to low-temperature adhesive particles in three situations: firstly, the adhesive material is prone to deformation or discoloration when heated, such as ultra-thin inner pages and thermal sensitive labels; Secondly, the ventilation in the workshop is average, and we want to reduce smoke and odors; The third is intermittent small-scale operations, with fast low-temperature heating and short startup waiting times. When making digital thin books and fine folding in graphic and text fast printing stores, low-temperature adhesive particles can significantly reduce the problems of ironing wrinkles and excessive penetration. The Sunlife hot melt adhesive low-temperature series can operate stably at around 130 ℃.
In scenarios such as high-temperature storage in summer, long-distance logistics, and high-speed sealing lines that require high heat resistance and initial adhesion, ordinary rubber particles have a high softening point and more stable resistance to rebound adhesion. The suggestion from Guangzhou Sunlife Trading is to determine based on the three points of “material temperature resistance+ambient temperature+production line speed”, and if unsure, send the materials for testing.
Q: Is the bonding strength of low-temperature adhesive particles worse?
No. At its applicable materials and temperature, the low-temperature adhesive strength of the adhesive particles is fully sufficient. The key is not to use it to withstand high-temperature environments, otherwise it is easy to re stick.
Q: Can ordinary rubber particles be used as low-temperature glue by lowering the temperature?
no way. Ordinary formulas have high viscosity and uneven glue application at low temperatures, resulting in wire drawing and weak adhesion. Therefore, corresponding formulas must be used.
One sentence: Choose low temperature for fear of heat, choose ordinary for heat resistance, and select according to materials and seasons to avoid pitfalls.
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