The melting point of hot melt yarn is a critical factor in determining its performance and properties. Here are some ways in which the melting point can affect the hot melt yarn:
1. Adhesion strength: The melting point of the hot melt yarn can affect the adhesion strength between the yarn and the substrate to which it is being applied. If the melting point is too low, the adhesion strength may be weak, while if the melting point is too high, the adhesion may be too strong and may damage the substrate.
2. Flow properties: The melting point of the hot melt yarn can also affect its flow properties, such as viscosity and fluidity. If the melting point is too high, the yarn may be too viscous and difficult to apply evenly, while if the melting point is too low, the yarn may flow too quickly and unevenly.
3. Temperature sensitivity: The melting point of the hot melt yarn can also affect its temperature sensitivity. If the melting point is too low, the yarn may be prone to melting or softening at relatively low temperatures, while if the melting point is too high, the yarn may be difficult to melt or apply evenly at high temperatures.
4. Durability: The melting point of the hot melt yarn can also affect its durability and resistance to environmental factors such as heat and moisture. If the melting point is too low, the yarn may be prone to melting or degrading when exposed to high temperatures or moisture, while if the melting point is too high, the yarn may be too rigid and brittle and may crack or break under stress.
So, The melting point of hot melt yarn is a critical factor in determining its performance and properties, and it's important to carefully consider the melting point when selecting a hot melt yarn for a specific application.
