Hot melt adhesive film is a material with a very wide range of applications. It can be found in the clothes and shoes we wear, the cars we ride in, and the protective cases of electronic products such as mobile phones and computers we use every day. Now that you know the wide range of applications of hot melt adhesive film, do you know what the "three elements of hot pressing" of hot melt adhesive film are?
1.The first element: Temperature
Hot melt adhesive film will only become sticky when heated and melted, otherwise it is almost the same as an ordinary plastic film, so temperature is the primary condition for hot melt adhesive film to achieve good adhesion.
By precisely controlling the temperature, we can make the adhesive film reach a melting state and effectively combine with the substrate or other materials. However, if the temperature is too high, it will cause burning or deformation, and if the temperature is too low, the adhesive film will not be completely melted and bonded. Therefore, we need to use the appropriate hot pressing temperature according to the adhesive film material and specific material requirements.
2.The second element: Pressure
When we bond materials, we place the hot melt adhesive film between the bonded materials and apply a certain amount of pressure to achieve a good bonding effect. The purpose of applying pressure is to allow the melted adhesive to spread on the surface of the bonded objects as quickly as possible, thereby forming a uniform adhesive layer. Some bonded objects have pressure themselves, so cold pressing is required after hot pressing, which can effectively avoid bonding failure caused by pressure release.
3.The third element: Time
It takes time to heat the hot melt adhesive film, and it also takes time for the hot melt adhesive film to spread on the surface of the adherend after it melts. The hot pressing time should not be too long or too short. If the hot pressing time is too long, the adhesive will penetrate excessively, and if the hot pressing time is too short, the hot melt adhesive film will not spread well. Therefore, when using hot melt adhesive film, you need to listen to the advice of professionals to better use this film product.
The temperature, pressure and time introduced above are the three elements of hot pressing of hot melt adhesive film. These three elements are the process parameters that we must consider and determine when using hot melt adhesive film products. Have you remembered them?
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