Shrink tunnel machine as a new type of packaging machinery, its practical value has been recognized by most people.The reason why the
shrink tunnel machine can become the core of the development of the packaging industry, and its packaging efficiency and packaging effect is inseparable.If we want to make the
shrink tunnel machine can fully play its own advantages, it is necessary to understand the factors affecting the packing rate.
The first factor that affects the
packaging rate of
shrink tunnel machine:
temperature adjustment.
Shrink tunnel machine power is generally around 5-40 kw, the temperature of the set is in commonly 140 ° to 220 ° or so, according to the thickness of the material, transmission products of the size of the wind speed, air flow, temperature Settings are different, you can use the low temperature of the product is not high temperature resistant, thin shrink film.Film thickness need higher temperature and contraction tunnel machine power also needs to choose bigger one. The temperature increases correspondingly when the product speed increases, whereas the temperature decreases correspondingly when the air volume increases.
The second
factor that affects the packaging rate of shrink tunnel machine: adjustment of the speed of the conveyor belt.
Most manufacturers will use frequency converter, electronic governor to control the speed. If the product is long, the speed must be slow. If the tunnel machine is long, it is generally adjusted to 20m/min-60m/min. If the product requires very high shrinkage effect, it is recommended to use a longer
shrink tunnel machine and use low temperature and slow transmission to meet the shrinkage effect. Choose a more powerful model. Temperature setting high transmission speed needs to be accelerated, otherwise slow down. The transport air volume is small and the transmission speed is slowed down.
The third
factor that affects the packaging rate of shrink tunnel machine: the adjustment of air flow rate.
Air volume generally uses frequency conversion speed regulation to control the motor speed. But many
shrink tunnel machine does not have this function, strong function and wind direction adjustment, effectively blow the hot air to the position of the product needs to shrink, the size of the air volume also has a great impact on the shrinkage effect, the shrinkage film is too large, the expansion is easy to lead to contraction after the explosion effect. The wind volume is too small for a short time the intima does not shrink well and the surface will appear fish scale. The size of the air volume is also related to the size and Angle of the wind wheel. The higher the temperature is, the lower the air volume is; otherwise, the higher the speed is, the higher the air volume is; otherwise, the lower the air volume is.
In the operation of shrink tunnel machine, we need to pay attention to three points: temperature, speed and air volume. Only when these three points can be better mastered, can we use them more easily.
