Hot melt adhesive choice of hard or soft
Whether it is hard or soft hot-melt adhesive, its fundamental purpose is to bond things. For users who are not demanding, they may only focus on whether the hot-melt adhesive can stick well, and some are strict about the bonding effect. However, for users of high quality hot melt adhesives, some performances other than softness and hardness will be noticed. Therefore, in front of different users, do you say hot melt adhesive is hard or soft? Your needs are everything.
The physical characteristics and performance of hot melt adhesives with different feel are different. Let’s not say anything else, if you use hot melt adhesive all year round, you may also notice that the hot melt adhesive used in winter and summer has a different feel, even if it is used for bonding applications to the same substrate superior. The higher the bonding requirements, the more careful we must control the performance of hot melt adhesives, because slight changes in the environment will also cause corresponding changes in hot melt adhesives.
Suitable for use is the most important, hard or soft hot melt adhesive is only one of the factors to consider. When people think about problems, they always like to judge the quality of things or things in a single state. If the problem can be handled simply, it is fine, but if it encounters something more complicated, it will cause serious consequences if it is not fully considered. For example, when a hot melt adhesive with soft colloid and good initial adhesion and a hot melt adhesive with hard colloid and no initial adhesion are placed in front of you, how would you consider which one is easier to use? Most people will think back to the last time they used hot melt adhesive in production to judge! This is one-sided and unscientific. The characteristics of hot melt adhesive can be ever-changing, so it can meet the adhesive needs of various industries. From this, we can think that the hot melt adhesive is not simply developed based on softness and hardness, but is developed based on the user’s production environment, gluing process, and the acceptability of the adhesive to the glue. of. The current state of use is the best proof for judging whether the hot melt adhesive works well or not.
It can be seen that the softness and hardness are not the only criterion for judging the quality of hot melt adhesives. We should consider whether the hot melt adhesives are suitable in all aspects from the application conditions, not just whether the colloid is hard or soft.
