The Characteristics, Use and Selection Methods of Hotmelt Adhesive
2025-06-08
Hot melt adhesive pellets are malleable adhesive products. Within a specific temperature range, their physical state changes with temperature fluctuations, while their chemical properties remain constant. These pellets are non-toxic and odorless, classifying them as eco-friendly adhesive products. They can be applied in the packaging of various industries.
The hot melt adhesive pellets produced by high-temperature hot melt adhesive manufacturers are melted by a hot melt adhesive machine through heat. Once melted, the adhesive turns into a liquid state. It is then conveyed to the surface of the objects to be bonded via the hot melt adhesive hoses and guns of the machine. The bonding process is completed once the hot melt adhesive cools down.
The hot melt adhesive pellets produced by high-temperature hot melt adhesive manufacturers are melted by a hot melt adhesive machine through heat. Once melted, the adhesive turns into a liquid state. It is then conveyed to the surface of the objects to be bonded via the hot melt adhesive hoses and guns of the machine. The bonding process is completed once the hot melt adhesive cools down.
Selection Methods
Color Requirements: The color requirements for the adhesive may vary. If the objects to be bonded have no specific color demands, yellow hot melt adhesive is recommended. Generally speaking, yellow hot melt adhesive exhibits better viscosity than white ones. Surface treatment of the objects to be bonded is also important. Although hot melt adhesive is less stringent in terms of surface treatment compared to other adhesives, dust and oil stains on the surface of the objects should still be properly removed. This ensures that the hot melt adhesive pellets can exert their bonding function more effectively.
Color Requirements: The color requirements for the adhesive may vary. If the objects to be bonded have no specific color demands, yellow hot melt adhesive is recommended. Generally speaking, yellow hot melt adhesive exhibits better viscosity than white ones. Surface treatment of the objects to be bonded is also important. Although hot melt adhesive is less stringent in terms of surface treatment compared to other adhesives, dust and oil stains on the surface of the objects should still be properly removed. This ensures that the hot melt adhesive pellets can exert their bonding function more effectively.
Operation Time: Rapid operation is a significant feature of hot melt adhesive. The typical operation time of hot melt adhesive is around 15 seconds. With the widespread application of modern production methods, such as assembly lines, the requirement for the operation time of hot melt adhesive is getting shorter. For example, in bookbinding and speaker manufacturing, the operation time requirement for hot melt adhesive has been reduced to about 5 seconds.
Temperature Resistance: Hot melt adhesive is highly sensitive to temperature. When the temperature reaches a certain level, the hot melt adhesive starts to soften; when it drops below a certain temperature, it becomes brittle. Therefore, when selecting hot melt adhesive, it is essential to fully consider the temperature variations in the environment where the product will be used.
Temperature Resistance: Hot melt adhesive is highly sensitive to temperature. When the temperature reaches a certain level, the hot melt adhesive starts to soften; when it drops below a certain temperature, it becomes brittle. Therefore, when selecting hot melt adhesive, it is essential to fully consider the temperature variations in the environment where the product will be used.
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