The following error reasons have a great impact on the accuracy of carton window stickers—Anhui Hongyonghua Machinery

Compared with the high-grade special-shaped packaging carton window sticking machine developed in recent years, it has the characteristics of high filming precision, fast filming speed and high pass rate. However, there are often problems of poor film accuracy and high rejection rate. There are many reasons for the large pasting error of the high-precision window sticking machine, some of which are difficult to control or eliminate. Therefore, only by comprehensively analyzing the causes of errors, and taking corresponding effective control measures and elimination methods, can the performance of window sticking equipment be improved and higher sticking accuracy be obtained. The following error reasons have a great influence on the accuracy of carton windows:

1. The influence of carton material and carton die-cutting quality

The carton materials that can be used for equipment filming are mainly gray cardboard, cardboard, and corrugated cardboard. Among them, gray cardboard is relatively soft, and it is easy to deform during the transportation and positioning of the carton, and the filming error is relatively large, so it should be avoided when designing the carton. Cardboard and corrugated paper are better, the carton conveying precision is high, and the window sticking precision is high. There are many factors that affect the accuracy of the pasting window during the process of carton die-cutting, mainly the die-cutting accuracy, the burrs generated by die-cutting, and the quality of the die-cutting fold line. Generally, when the carton is die-cut with a flat die-cutting machine, each version will be lined with multiple cartons, and there will be errors between the cartons cut out of one version, which is not conducive to the filming of the equipment. Anhui Hongyonghua Machinery Window Patching Machine
2. The thickness of the special-shaped film and its influence on the quality of die-cutting

Most of the special-shaped films are made of PVC and PET, with a thickness of 0.2mm~0.5mm. Films with a thickness of less than 0.2mm are soft, easy to deform, and have large pasting errors. They are rarely used in high-end packaging cartons. If the thickness of the film exceeds 0.5mm, the film is too hard, and the suction cup cannot absorb it, making it difficult to take the film, which affects the continuous film taking and causes the failure of pasting. Choosing the right film thickness can help reduce sticking errors and improve carton quality. When die-cutting special-shaped film, similar to a die-cut carton, each die-cutting board is lined with multiple pieces of film, and there will be errors in the multiple pieces of film cut by one die-cutting board, resulting in a large lamination error.

3. The influence of carton window size and window structure

The larger the carton window, the greater the pasting error, and the structure of the window also affects the pasting accuracy. This impact needs to be analyzed in detail. Generally, when the window is located in three or more cartons, it is difficult to paste the window, and the pasting accuracy is low, and the larger the window area, the more windows, and the lower the pasting accuracy.

4. The effect of static electricity generated in the carton and film

In the process of pasting windows, the carton box film will generate static electricity. Although the static electricity generated by the carton is very small, it will also affect the rapid transmission accuracy and transmission continuity of the carton. However, static electricity generated in thin films is a very difficult problem. It is not only easy to generate static electricity, but also generates a large amount of static electricity, which is not easy to eliminate, which seriously affects the absorption, separation and sticking of the film, and even causes scratches between the film and the film. The quality of the film cannot be guaranteed, resulting in unnecessary waste.

5. Carton conveying positioning error

For the window sticking machine (dynamic sticking), the sticking speed is high, but due to the influence of motion inertia, position detection error, deviation correction error and other factors, the positioning error will be larger. For the window sticking machine (static window sticking machine) that sticks the film after the carton is stopped, the positioning gauge is used to accurately position the carton in the static state, and the suction cup is attached to the carton, the window sticking precision is high, but the window sticking speed is low.

6. The influence of the quality of the glue on the edge of the window

There is a layer of glue between the carton film and the carton film, which should be firmly bonded and sealed. Uneven gluing or leakage of gluing on the carton window will cause film deviation, which will affect the accuracy of window gluing and the quality of carton forming.
7. Errors in taking the film and sticking the film

When using a suction cup to suck the film, each film must be in the same position, and measures to eliminate noise must be taken, otherwise the film accuracy cannot be guaranteed. When filming, if the carton is dynamically attached to the carton during the movement, the filming error will be larger, and if the carton stops static filming, the error will be smaller.

8. Bonding, pressing and stacking

After sticking on the carton film, it needs to be pressed together, otherwise the adhesive layer will be slightly raised, and it will take a certain time to cure, and the carton will rub against each other during the stacking process, which will cause the film to shift and bring unnecessary errors.

9. Methods and measures to improve the precision of film sticking

Although the material of the carton box film has an impact on the accuracy of the film, it has nothing to do with the window sticking equipment. The carton factory should consider these issues when designing the carton box film. As mentioned above, the reasons for filming errors are directly related to the filming of the film laminating machine equipment. Corresponding elimination methods and control measures should be taken to reduce errors and improve the accuracy of the carton. quality.

For more information about the automatic window sticking machine of Anhui Hongyonghua Packaging Machinery, please leave a message for consultation.