When Should Low-Temperature (Low-Melt) Hot Melt Adhesives Be Used?
Low temperature hot melts are designed to work at lower application temperature than standard hot melt systems. It can reduce the risk of deformation in heat sensitive foam, film, fabric and some plastics; reduce thermal load around the operator. However, the standard product is not only a low melt solution to use short temperature.
What surfaces provide benefits?
EPS and so on foams, fine films, some textiles and coatings can melt at high temperature, shrink or trace. Proper low melt formulation limits this risk by providing lower temperature flow and soaking. On the actual heat sensitivity of the surface, both instant appearance should be controlled by the next mechanical behavior.
Safety and energy size
The lower application temperature does not eliminate the risk of burn, but it can reduce thermal intensity and ambient heat load in contact. Energy consumption depends on the system size, waiting time and production tempos; it should not be removed as a result of exact savings that are aware of the temperature alone. The protective equipment and hot surface procedures continue.
Viscosity and open time
Low melt product should provide suitable viscosity at low temperature designed. It can break the standard adhesive to lower the same temperature and soak. Ambient and surface temperature affect open time; faster freezing can be seen in cold substrates. The applicator should be verified to low temperature adjustment range and product format.
When the standard system can be more accurate?
Another formulation that works at standard temperature in high service temperature, very fast setting or demanding surface weting requirement can be more convenient. Low melt choice should be done not only with security perception, but with bond performance and process requirements. Supports TDS range and actual test result decision together.
Application control list
- Check the deformation temperature of the surface in the sample.
- Match the product and applicator designed for low melt.
- Measure open time at real surface temperature.
- Maintain protective equipment and hot surface procedure.
- Complete service temperature and aging test.
Conclusion
Low melt can be controlled and efficient solution in heat sensitive materials. The success depends on the selection of suitable formulation and equipment to low temperature.
Manstechnic approach
Manstechnic conducts low melt trial surface damage, gramm and bond performance simultaneously.