Flexo Technology: Four Corrugated Box Printing Techniques

[China Packaging Network News] The packaging carton printing industry is booming, and customers are increasingly demanding higher quality for their products. As a result, improving the print quality of cartons has become a key focus for many companies. Below are some essential tips to achieve high-quality and precise printing on carton boxes. **Tips for Flexographic Printing on Low-Gram Surface Paper:** When using low-gram base paper for corrugated cardboard, surface corrugation marks may appear, leading to blemishes or incomplete printing in the depressions. To address this, it's recommended to use flexible resin plates with good elasticity to prevent printing defects. For example, A-type corrugated boards made from low-gram paper can suffer from reduced flat-pressing strength after going through the printing and embossing rolls, which can also damage side pressure strength. Additionally, if the corrugation surface is uneven, it may cause warping during production, resulting in misregistration and irregular printing grooves. It’s best to flatten warped boards before printing to avoid such issues. **Troubleshooting Color Variations in Carton Printing:** During mass production, even if individual sheets are printed accurately, color inconsistencies across the batch can occur, affecting post-processing. This issue often stems from improper positioning. If the front gauge isn't set correctly, the stacked sheets may not align properly, causing variations in product size. Similarly, incorrect side alignment—whether due to improper height of the side plate or incorrect tension from the pull roller—can lead to misalignment. To prevent this, the side pressure plate should be set at three times the thickness of the paper, and the distance between the plate and the paper should be around 5–8 mm. **Printing Pressure Adjustment Techniques:** Adjusting the printing pressure ensures even ink transfer and clear, sharp prints without deformation. Once the correct pressure is set, it should not be changed frequently. The printing pressure between the anilox roller and the printing plate is crucial for proper ink distribution. If the pressure is too high, it can cause excessive ink pickup and reduce print quality, while too low pressure may result in poor ink coverage. Therefore, careful adjustments during the process are necessary to maintain smooth and consistent printing. **Flexographic Printing on Different Paper Surfaces:** The texture and smoothness of the paper significantly affect the printing outcome. Rough, loose-textured paper absorbs more ink and dries faster, so more ink should be applied. In contrast, smooth, dense paper retains ink longer, requiring less ink. Sizing also plays a role: unsized paper dries quickly, while sized paper allows for better pattern reproduction. For instance, coated whiteboard paper has lower ink absorption and slower drying than container board or tea board, but it offers better resolution and clarity for small details. Its smooth surface also improves pattern reproducibility compared to other types of paper. By following these practical tips, printers can enhance the quality and consistency of their carton printing, meeting customer expectations and maintaining a competitive edge in the market.

Hand Push Brush Cutter

Small hand push Brush Cutter is also called small harvester, cutting and irrigation machine. It has broken through the operation bottleneck of rural areas unable to enter the large harvester harvest, promoted the mechanization of harvest operations, shortened the labor cycle, and freed people from heavy manual labor. The mower can harvest rice, harvest wheat, harvest soybeans, harvest corn, and make it tidy, and can also cut shrubs, weeds, branches, etc. Mower with gasoline power powerful, convenient and practical, high efficiency, easy to carry and field operations. The gasoline engine has low noise. Quiet and comfortable characteristics. Let people everywhere work long hours without feeling tired

Hand Push Brush Cutter,Grass Trimmer With Wheels,Cordless Brush Cutter

Shaoxing Haotuo Machinery CO., LTD. , https://www.haotuochinatools.com