Use skills of heat shrink packaging machine

With the development of science and technology, automated machinery and equipment are now widely used in industrial production, and packaging machinery is widely used. There are some precautions in the use of mechanical equipment, otherwise it will not only damage the machine but also affect work efficiency. Today, the Henan automatic packaging machine sorted out some tips and adjustment methods for the heat shrink packaging machine.

(1) Adjustment of the temperature of the shrinking machine:

The power of PE shrinking machine is generally about 20-40KW, and the setting temperature is also relatively high, generally around 180°-220°. The settings are also different according to the thickness of the material, the speed of conveying the product, the size of the air flow, and the temperature. , If the product is not resistant to high temperature, low temperature can be used, and thin shrink film can be used. If the shrink film is thick, the temperature needs to be higher, and the shrink machine power needs to be larger. The speed of conveying products increases and the temperature increases accordingly, and vice versa, the temperature decreases correspondingly when the air volume increases, and vice versa. The power of POF and PVC shrinking machine is generally 5-20KW, and the temperature is generally set at about 140-°160°. The adjustment is basically the same as that of PE shrinking machine.

(2) Speed adjustment of conveyor belt:

Most conveying manufacturers will use frequency converters and electronic speed regulators to control the speed. If the product is long, the speed must be slow, and the conveyor of the shrinking machine must be long, generally adjusted to 20m/min-60m/min. If the product has very high requirements for the shrinkage effect, it is recommended to use a longer shrinking machine, and use low temperature slow conveying to meet the shrinkage. effect. Choose a model with a higher power. The conveying speed needs to be accelerated at a high temperature setting, and vice versa. When the air volume is small, the conveying speed slows down, and vice versa.

(3) Adjustment of wind flow:

The air volume is generally adjusted by frequency conversion to control the speed of the motor. However, many shrinking machines do not have this function. The strong function is also the adjustment of the wind direction, which effectively blows the hot air to the position where the product needs to shrink. The air volume also has a great influence on the shrinking effect. The air volume is too large and the shrink film is instantly heated and the expansion is very high It is easy to cause a burst after shrinkage and affect the shrinkage effect. If the air volume is too small, the film does not shrink within a short time, and fish scales will appear on the surface. The size of the air volume is also related to the size and angle of the wind wheel. The higher the temperature, the lower the air volume, otherwise the higher, the faster the speed, the higher the air volume, and vice versa.