Horizontal Labeling Machine Mechanical Operation:
Mechanical operation is generally performed manually with the power supply connected.
1. Conveyor Mechanism: Adjust the conveyor mechanism to ensure smooth delivery of products to the labeling position and delivery. Place the products to be labeled on both sides of the conveyor mechanism and make minor adjustments. The specific operation method is the same for conveyor adjustments at the labeling and receiving areas.
2. Labeling Position Adjustment: Place the product to be labeled under the peeling plate. Adjust the labeling head up and down, and forward and backward, to ensure that the label peeling area is aligned with the labeling position. Adjust the guide mechanism to ensure that the label is applied to the designated position on the product. Use a combination of the above two methods to adjust the labeling position.
3. Labeling Position Adjustment: Use the sensor to detect the label before or after the label is released to control the order of label release. Use the label release delay to control the order of label release. Use the label stop delay to control the length of the second label. Use a combination of the above three methods to adjust the label to the correct labeling position. Solutions for common labeling issues encountered during horizontal labeling:
Cracks on the edge of the label backing
After self-adhesive labels are die-cut into finished products, the backing paper is typically wider than the label itself. This is to facilitate label application by the customer. During shipping and handling of the label packaging, the backing paper can easily tear at the label edge, resulting in small cuts. During labeling, a certain amount of tension is applied, and labels with cracks on the backing paper edge can easily be pulled out under the tension, causing the label to break. Additionally, improper roller adjustment on the automatic labeling machine can cause the roller to tear the backing paper at the label edge, leading to label breakage. Typically, labels break due to the roller pressing against the backing paper, and the cracks in the backing paper are more regular.
Glue bleed caused by overtightening the label rewind
During labeling, if the finished label is rewound too tightly, adhesive can be squeezed out of the roll, causing bleed, and the bleed can adhere to the backing paper. This can make it difficult to release the entire roll of labels. This is especially true in the summer. If the label is relatively narrow, the tensile strength per unit area will be insufficient. Automatic labeling machines exert a certain amount of tension during the labeling process. When a roll of labels with leaking glue is used for automatic labeling, the tension in the labeling machine and the internal tension of the reel can cause the backing paper to pull off during the labeling process, resulting in label damage. In this case, the backing paper breaks irregularly due to the tension, but the fracture surface is relatively uniform.
Poor Die Cutting
Die cutting quality also significantly affects the likelihood of labels breaking during automatic labeling. Excessive die cutting pressure can cut through the backing paper, reducing its tensile strength and causing the label to break. Labels broken due to poor die cutting have a relatively uniform bottom surface, with the cracks located at the die cut line.
Overtightening the label rewind causes glue bleed.
If the release layer (usually the silicone oil layer) of the paper is damaged, the label can also break. This condition will cause the label to break during the labeling process of a horizontal self-adhesive labeling machine, and the fracture surface of the backing paper will appear jagged. Damage to the release layer can be caused by defects in the production and coating of the raw materials. Also, improper inspection and reprinting methods used in the printing plant can wear out the release layer.
Scope of Application:
Applicable Labels: Self-adhesive labels, self-adhesive films, electronic monitoring codes, barcodes, etc.
Applicable Products: Small products requiring labels or films attached to circular surfaces or small conical surfaces.
Application Industries: Widely used in the pharmaceutical, cosmetics, electronics, hardware, plastics, and alcohol industries.
Application Examples: Labeling of vials, shampoo bottles, dual labeling of wine, and fixed-point labeling of wine.
This concludes today's discussion of various labeling faults encountered during horizontal labeling machine operation and how to address them based on your specific situation. We hope this will be helpful for your future use of this equipment.