Labeling machine plays an increasingly important role in the packaging industry. There are many kinds of labeling machines on the market. The labeling methods of labeling machines mainly include the rubbing method, the blowing method and the suction sticking.
These three labeling methods also have their own advantages and disadvantages.
1.Working principle of the rubbing method: When the leading edge part of the labeling machine label is pasted onto the product, the product immediately takes the label.
The advantage of this method is that the labeling speed is fast, and the labeling accuracy depends on the speed of the labeling machine and the speed of label distribution. If the speed of the two is same, the labeling accuracy is high. Otherwise, the labeling machine accuracy will be affected.
2. The working principle of the suction method: when the labeling machine label paper leaves the conveyor belt, it is sucked onto the vacuum pad, and the vacuum pad is connected to the end of a mechanical device. When the mechanism is extended until the label comes into contact with the product, it shrinks back and the label is attached to the product.
The advantage of this method is high precision, and it is suitable for the labeling process of difficult packaging products; the disadvantage is that the labeling speed is slow and the labeling quality is not good.
3, the working principle of the blowing method: on the basis of the suction method, the difference is that the surface of the vacuum pad remains stationary, the label is fixed and positioned on a "vacuum grid", the "vacuum grid" is a plane, above Covered with hundreds of small holes. The apertures are used to maintain the formation of an "air jet." A stream of compressed air is blown from these "air jets" and the pressure is strong, causing the label on the vacuum grid to move and attach it to the product.
The advantage of this method is that it is highly accurate and reliable; the disadvantage is that the process is complicated.
Comparison of the three labeling methods found that the rubbing method can greatly improve the working speed of the labeling machine, in line with the trend of pursuing high efficiency.