Label Printing Processing (5)

Failure 1 The hot stamping is not possible or the hot stamping is not firm Cause: The low hot stamping temperature, the low printing plate pressure, the crystallized or too smooth surface of the printing ink layer, the thick ink layer and the inappropriate type of anodized aluminum may cause this malfunction.
The solution to the problem is:
1, properly increase the stamping temperature;
2, increase the pressure on the plate;
3, change the ink composition, so that the ink layer table modification;
4, reduce the ink layer thickness, reduce overprinting;
5, change other types of aluminum.
Fault 2 Electro-aluminum anti-draw with ink Cause: Insufficient drying of the printing ink layer, too low ink adhesion and excessively high separation force of the electro-aluminum are the causes of this failure.
The solution to this problem is:
1. Before stamping anodized aluminum, let the ink be fully dried;
2, change the ink composition;
3. Switch to electro-aluminum with low separation force.
Failure 3 imprinted blotchy hair causes: improper pressure adjustment or plate temperature is too low to solve the problem is:
1, adjust the pressure, local pad version;
2, properly increase the temperature of bronzing.
Fault 4 Metallic gloss reduction Cause: The plate temperature is too high.
The solution to the problem is:
1, reduce the electric heating temperature;
2. Reduce unnecessary downtime and reduce downtime.
Fault 5 is unclear, and lack of strokes causes: When encountering this type of failure, it is necessary to first consider whether there is a defect in the bronzing itself. In addition, the galvanized aluminum is too tight, the stamping pressure is uneven, and the galvanized aluminum is too narrow or Misalignment of the paper guide is also the cause of such failures.
The solution to the problem is:
1, replace the printing plate;
2, reduce the tension of the aluminum;
3, local pad version, keep the same hot stamping pressure;
4. Switch to a wider range of electro-aluminum;
5, adjust the guide mechanism.
Failure 6 Adhesive labeling The most prone to quality problems in bronzing - film materials and UV ink surfaces are difficult to bronze. Imprints are unclear. The solution to this problem is:
1. Select special, matching foils and try to use imported materials;
2, protect the printing plate, require the plate to be smooth, no dirt on the surface;
3, film material should be corona treatment to increase its surface tension;
4, reduce the hot stamping area, to ensure that the plate's smoothness and stamping pressure uniformity;
5, the use of hard liner material requires the liner to be flat and uniform;
6, through the test to find out the best combination of stamping pressure, speed, turbidity, waste discharge.
VII. Labeling failures and troubleshooting 1 Bubbles appear when applying large area paper labels on containers such as oil drums. Causes: The temperature and humidity of the label's storage environment are too different from the labeling environment, resulting in rapid label absorption after labeling. Moisture forms bubbles; or because the surface of the labeling object is uneven or dirty with blisters, labeling is not secure and bubbles appear.
The solution to the problem is:
1. Before labeling, place the label in the labeling environment for a period of time to bring it into balance with the environment.
2. Keep the surface of the labeling object dry and clean, and apply it firmly when labeling.
Failure 2 Transparent film label attached to the transparent bottle after the emergence of bubbles, affecting the appearance of the reasons: the surface of the bottle is not flat, there are tiny pits or labels, the degree of hardness and hardness will match the bottle will create a bubble; and labeling machine The labeling method does not match the shape of the bottle body or the labeling method is not suitable. It will cause air to remain in the label and generate bubbles.
The solution to the problem is:
1. Check whether the bottle is balanced before labeling. If it is not balanced, trim the bottle mold.
2, transparent special labeling machine, with rubber scraper labeling.
3, choose the material bottle matching bottle material matching.