How does the hot melt adhesive work?

The hot melt glue is applied to the surface material while it is in the molten state and then achieving maximum adhesion when solidifying and crystallizing at ambient temperature. The essence of hot melt adhesive is thermoplastic, easy to use, and reusable many times. The process of changing physical states and creating cohesion between the material layers is described in detail as follows:

Step 1

The hot melt adhesive melts and becomes a liquid state when heated at a high temperature (140-200 degrees Celcius). Liquid state, the hot melt glue easily flows into a stream and is then applied by putting them between two layers of the material to be bonded. Once the heat is lost, it will quickly solidify and crystallize. Depending on the usage needs, we can change the temperature and volume glue applied to the surface material. Most hot melt glues have an operating temperature range, so if the adhesive applies to the surface with too low a temperature, it will dry quickly and do not stick on the surface of the material. Conversely, at high temperatures, the wetting process will be easy and gives a better adhesion.

Step 2

After the insertion of glue between the surface of the two layers of the material, the pressing process takes place afterward. The purpose of this process spreads the adhesive evenly on the surface of the material and increase the contact area between them. The sudden drop in temperature causes the glue to dry quickly to solid-state and create a quick adhesion between the layers of materials together. 

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