Selection of hot melt adhesive for hot melt adhesive coater

Selection of hot melt adhesive for hot melt adhesive coater

Customers often ask me that I have bought a hot melt adhesive coater, but I don't know how to choose the hot melt adhesive. I often buy it, but I find it useless at all. Now let's answer the selection of hot melt adhesive for the hot melt adhesive coater:

1、 Color: due to the different colors of the adherend, the color requirements of hot melt adhesive should be different. If the object to be followed has no special requirements for color, it is recommended to use yellow hot-melt adhesive. Generally speaking, yellow hot-melt adhesive is better than white adhesive.

2、 Surface treatment of the object to be followed: the hot-melt adhesive of the hot-melt adhesive coater is not as strict on the surface treatment of the object to be followed as other adhesives, but the dust and oil stain on the surface of the object to be followed should also be properly treated in order to make the hot-melt adhesive play a better role in bonding. 

3、 Operation time: fast operation is a major feature of hot melt adhesive. The operation time of hot melt adhesive in hot melt adhesive coater is generally about 15 seconds. With the wide application of modern production mode I. assembly line, the operation time of hot melt adhesive is required to be shorter and shorter. For example, the operation time of hot melt adhesive in book binding and speaker manufacturing is required to be about 5 seconds.

4、 Temperature resistance: hot melt adhesive of hot melt adhesive coater is sensitive to temperature. When the temperature reaches a certain level, the hot-melt adhesive begins to soften. If it is lower than a certain temperature, the hot-melt adhesive will become brittle. Therefore, the temperature change of the product environment must be fully considered when selecting the hot-melt adhesive.

5、 Viscosity: the viscosity of hot melt adhesive is divided into early viscosity and late viscosity. Only when the early viscosity is consistent with the later viscosity can the hot melt adhesive and the adherend remain stable. In the production process of hot melt adhesive, it should be guaranteed to have oxygen resistance, halogen resistance, acid and alkali resistance and plasticization. The stickiness of hot melt adhesive varies with the material of the object to be followed. Therefore, different hot melt adhesives should be selected according to different materials.

The above information is provided by the small editor of Yitong industry and trade hot melt adhesive coater.