When the sensor sends a labeling object to prepare the labeling signal, the driving wheel on the labeling machine rotates. Since the reel label is tensioned on the device, when the bottom paper is in close contact with the peeling plate, the label is forcibly detached and ready for labeling due to the certain rigidity of the label. At this time, the labeling object is located at the lower part of the label, and under the action of the labeling wheel, synchronous labeling is realized. After labeling, the sensor under the reel label signals a stop, the drive wheel is stationary, and a labeling cycle ends. Regardless of the type of labeling machine, the labeling process is roughly similar, the difference is that the labeling device is installed at different locations, the labeling object is transported differently, the positioning method is different, and the labeling roller is in different forms.
*, the strength of the surface material label is the key to the bidding, therefore requires a certain strength and hardness of the surface material, the stiffness of the label is related to the thickness of the material and the area of ​​the label, so when using soft film materials, it is necessary to increase The thickness is generally controlled to be 100 μm or more. Thin paper-based materials, such as 60~70g/m2 labeling paper, are generally not suitable for large labels, but are suitable for processing into small labels, such as price labels used on price guns. The poor stiffness of the label will result in no labeling when labeling, or the label will be re-rolled with the liner to invalidate the automatic labeling.
Second, the release force is also called the peel force, which is the force when the label is separated from the bottom paper. The release force is related to the type and thickness of the adhesive and the silicon coating on the surface of the liner, as well as the ambient temperature at the time of labeling. The release force is too small, the label is easy to drop the label during the conveying process (out of the bottom paper); the release force is too large, the label is difficult to get out of the bottom paper, and the label cannot be produced. All technical indicators should be comprehensively controlled so that the release force is within a reasonable range.
Third, the bottom paper is also an important indicator to control automatic labeling. It is required that the surface of the bottom paper is coated with uniform silicon and the release force is consistent; the thickness is uniform, and the tensile strength is good, so as to ensure that the label is not broken; the thickness is uniform, and the light transmittance is good, so that the sensor correctly recognizes the position of the label.
Fourth, the processing quality requires that the sides of the bottom paper are flat and have no cracks after cutting, to avoid the breakage of the bottom paper when the tension changes. During die cutting, it is necessary to avoid cutting through the bottom paper or destroying the silicon coating layer. The bottom paper and the silicon coating layer are damaged. The bottom paper is broken or the adhesive in the label penetrates into the bottom paper, and the paper is not marked and the bottom paper is peeled off. . In addition, it is necessary to eliminate the static electricity in the web label before labeling, because static electricity will cause the label to be unmarked or inaccurate.
Knowing the requirements of the labeling machine for the label, it can avoid many common problems such as labeling and labeling.
*, the strength of the surface material label is the key to the bidding, therefore requires a certain strength and hardness of the surface material, the stiffness of the label is related to the thickness of the material and the area of ​​the label, so when using soft film materials, it is necessary to increase The thickness is generally controlled to be 100 μm or more. Thin paper-based materials, such as 60~70g/m2 labeling paper, are generally not suitable for large labels, but are suitable for processing into small labels, such as price labels used on price guns. The poor stiffness of the label will result in no labeling when labeling, or the label will be re-rolled with the liner to invalidate the automatic labeling.
Second, the release force is also called the peel force, which is the force when the label is separated from the bottom paper. The release force is related to the type and thickness of the adhesive and the silicon coating on the surface of the liner, as well as the ambient temperature at the time of labeling. The release force is too small, the label is easy to drop the label during the conveying process (out of the bottom paper); the release force is too large, the label is difficult to get out of the bottom paper, and the label cannot be produced. All technical indicators should be comprehensively controlled so that the release force is within a reasonable range.
Third, the bottom paper is also an important indicator to control automatic labeling. It is required that the surface of the bottom paper is coated with uniform silicon and the release force is consistent; the thickness is uniform, and the tensile strength is good, so as to ensure that the label is not broken; the thickness is uniform, and the light transmittance is good, so that the sensor correctly recognizes the position of the label.
Fourth, the processing quality requires that the sides of the bottom paper are flat and have no cracks after cutting, to avoid the breakage of the bottom paper when the tension changes. During die cutting, it is necessary to avoid cutting through the bottom paper or destroying the silicon coating layer. The bottom paper and the silicon coating layer are damaged. The bottom paper is broken or the adhesive in the label penetrates into the bottom paper, and the paper is not marked and the bottom paper is peeled off. . In addition, it is necessary to eliminate the static electricity in the web label before labeling, because static electricity will cause the label to be unmarked or inaccurate.
Knowing the requirements of the labeling machine for the label, it can avoid many common problems such as labeling and labeling.
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