As the “new darling” of the laminating market, hot melt adhesive omentum is being recognized and used by more and more industries. At the same time, since many industries are also contacting and using hot-melt adhesives for the first time, many questions and problems in use also need to be resolved urgently. For example, the most frequently consulted recently is whether the material after the hot-melt adhesive omentum will be degummed after it meets with water?
As for whether the hot melt adhesive omentum will be degummed when exposed to water, the editor has shared it in a previous article. Maybe it’s been a long time, and many new friends haven’t seen the article there. This article will analyze it again for everyone. Whether the material after the hot melt adhesive omentum is bonded will be degummed when it meets with water, the key depends on which type of hot melt adhesive omentum is used. We all know that there are four types of conventional hot melt adhesive omentum, namely pa hot melt adhesive omentum, pes hot melt adhesive omentum, tpu hot melt adhesive omentum, and eva hot melt adhesive omentum. The four kinds of hot melt adhesive membranes have relatively large differences in the properties of water washing resistance. According to the strength, it is: pes is stronger than pa, and tpu is stronger than eva. Regardless of other related comound conditions, pes hot-melt adhesive omentum is very resistant to washing, followed by pa and tpu hot-melt adhesive omentum, and eva hot-melt adhesive omentum has poor washing resistance.
If you are using eva hot melt adhesive membrane with poor washing resistance properties, it is not a big problem if the bonded material is exposed to water for a short period of time, and generally it is not likely to be degummed; if it is soaked in water for a long time, it is easy Degumming occurs. If you are using a hot melt adhesive membrane with good washing resistance, even if it is immersed in water for a long time, there is no need to worry about degumming!
Post time: Nov-01-2021