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Solution to the drawing problem of hot melt glue filling mac

编辑:周周   日期:2019-11-04 09:02   浏览:

Generally speaking, the low concentration fluid is mostly used in spot coating of large area, such as coating, filling, large area bonding and other medium viscosity fluid applications are easier, more suitable for most of the bonding, sealing and other applications, the high concentration fluid is difficult to spit out, with weak or seemingly no fluidity. Because of the requirements of the process, some products must use a high concentration of fluid. In the process of glue filling, because of the high viscosity, sometimes the wire drawing will harm the quality and appearance of glue filling. How to deal with the wire drawing when the hot-melt glue filling machine is using a high viscosity fluid? The following explains a variety of solutions for you.
 
热熔胶涂覆阀
Hot melt adhesive coating valve
 
When the hot-melt glue filling machine starts to open the glue head, there is a distance between the glue outlet of the glue head and the glue filling valve, and there is no fluid in the middle. If it starts to start immediately after opening the glue outlet of the glue head, it will cause a short section of glue shortage at the beginning of the path. In order to prevent this situation, a certain time shall be postponed after glue injection, and the subsequent start-up shall be carried out after the fluid is discharged. These intervals are called glue filling time.
 
环保型热熔胶块
Environmental friendly hot melt block
 
After the hot-melt glue filling machine turns off the glue head, there is still fluid between the glue head outlet and the glue filling valve. If it is started immediately after the glue head is turned off, the fluid tailing will occur. In order to prevent the occurrence, after the rubber head is turned off, a certain time is delayed to wait for the rubber to flow out, and then follow-up actions are carried out. These time intervals are called guanjiaoting time.
 
Because of the high viscosity of some fluids, the hot melt glue filling machine can only be pulled off by lifting it for tens of meters at a slow average speed, which does not harm the glue filling path. This distance is called the drawing height.
 
落地式涂覆灌胶机
Floor type coating and filling machine
 
After each path is filled with glue, empty move to the starting point of the next path. In order to prevent the rubber head from hitting the needle, lift the height of each section of the rubber head at the end point to ensure the safety of the rubber head from hitting the needle, and then empty move to the starting point of the next path. These heights are called lifting heights.


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