What are the special requirements of hot melt adhesive for glue loader?
Hot melt adhesive as a plastic adhesive, in the use of glue machine selection, then, the following by the small series to introduce how to select hot melt adhesive.
The use of hot-melt adhesive with temperature changes, physical changes and chemical properties remain unchanged, used in binding art, the wide application of adhesive binding machine has become the main method of war end measurement, but the use of adhesive binding machine, the important thing is the selection of hot melt adhesive.
(1) the color requirements of hot melt adhesive used by adhesive mounting machine are different. If the adherent has no special requirements for color, yellow hot melt adhesive is recommended. Generally speaking, yellow hot melt adhesive is better than white hot melt adhesive.
(2) the surface treatment of the adherent. The surface treatment of hot melt adhesive is not as strict as other adhesives, but the dust and oil on the surface of the adherent should also be properly treated to make the hot melt adhesive play a better bonding effect.
(3) heat resistance of hot melt adhesive. Hot melt adhesive is sensitive to temperature. When the temperature reaches a certain degree, the hot-melt adhesive begins to soften. If it is lower than a certain temperature, the hot-melt adhesive will become brittle. Therefore, it is necessary to fully consider the temperature change of the product environment when selecting hot-melt adhesive.
(4) operation time of hot melt adhesive. Fast operation is a major feature of hot melt adhesive. The operation time of hot melt adhesive is generally about 15 seconds. With the wide application of modern production mode - 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 is required to reach about 5 seconds for book binding and speaker manufacturing.
(5) the stickiness of hot melt adhesive during gluing. Hot melt adhesive viscosity is divided into early viscosity and late viscosity. As long as the early viscosity and late viscosity are common, the hot melt adhesive and the adherent can be stable. The adhesive effect of hot melt adhesive is different when the adhesive is used because of different raw materials. Therefore, different hot melt adhesives should be selected according to different raw materials.
Source: Jiangmen glue installation machine http://www.jmhuayue.com/