Dot-break lines are usually used to facilitate the removal of plastic packaging bags, and are commonly seen in the design of roll bags, pre-opened bags or whole bags. The position and quality of the dot-break lines directly affect the ease of use and production efficiency of plastic packaging bags.
1. Design of dot-break lines
Uniform spacing: The spacing of the dot-break lines needs to be designed reasonably. Too dense will make the bag difficult to remove, and too sparse may affect the packaging efficiency. The common spacing design is 1-2 cm, depending on the thickness of the bag and the occasion of use.
Appropriate aperture: The aperture of the dot-break line needs to be appropriate. Too large holes will cause the strength of the film to decrease, and too small holes may make it inconvenient to remove. Ensure that the aperture can provide sufficient removal convenience without affecting the mechanical strength of the bag.
2. Position of dot-break lines
Position consistency: The dot-break lines should always be kept in the designed position to ensure consistency between each plastic packaging bag, and prevent the bag from being difficult or uneven to remove due to inaccurate dot-break line positions.
Avoid excessive overlap: The design of dot-break lines should not cause the holes between multiple plastic packaging bags to overlap, so as to avoid affecting the separation and subsequent use of bags.
3. Strength of dot-break lines
Appropriate weakening treatment: dot-break lines are generally weakened, that is, the tensile strength of the area is reduced by indentation or micro-hole punching so that the bag can be easily separated. During the weakening process, excessive punching will cause the strength of the film to decrease, so it is necessary to ensure that the strength of the dot-break lines meets the packaging requirements.
Durability: The durability of the dot-break lines must be ensured that the plastic packaging bags will not break prematurely due to external forces even during transportation and storage. The use of appropriate punching methods and techniques can improve its durability and stability.
4. Equipment and process control
Precise control: The processing of dot-break lines should use high-precision equipment and technology to ensure that the dot-break line position is accurate and the hole diameter is consistent. Automated punching equipment can improve production efficiency and accuracy.
Regular inspection and calibration: During the production process, the dot-break line equipment should be checked regularly to ensure the accuracy and consistency of its punching. After long-term use, the equipment may wear out, affecting the punching effect.
