Heat shrink film packaging machine shrinkage is not flat how to do it? The heat shrink packaging machine is heated by a heating strip to bond the vacuum packaging bags together, the use of too much time will appear uneven sealing, when this happens is not necessarily a heat shrink packaging machine failure, what is the cause?
Caused by the following.
1, the heating strip moved, misalignment
2, silicone strip and steel box are not correct
3、Heating gap is too large
4、Heating time and heating temperature are not well adjusted
5, insulation cloth wrinkled
Uneven shrinkage will be manifested as the same piece of production shrinkage effect is mixed, causing this situation there are many factors affecting the temperature, conveying speed, the wind will affect the shrinkage effect, in the absence of adjustment to the appropriate product shrinkage environment, the shrinkage effect is difficult to good. Therefore, we need to solve the layout of the heating tube; improve the effective air volume, and have the ability to adjust the wind speed; be able to adjust the wind direction; solve the impact of the wind source on the film heat shrinkage process.
Adjust the above three to the right position between the contraction effect is also easy to meet the requirements, which an important factor is wind because the wind brings out the temperature, if there is no wind, the meaning of temperature is not strong, the characteristics of the temperature is to rise, this is more important, so we have to consider if the upper and lower will not have a temperature difference.