Now we are often in the use of paper bags, not only the advantages of environmental protection, more in line with the needs of modern people for food safety, and the use of paper packaging is also conducive to sales, it makes the packaging situation of goods more diversified, and because paper has a huge advantage in printing, so it is more conducive to the development of paper bag machine equipment.
1. Watermark. Because of its use of water-based elastomer as a printing medium, it is named after it is more common in textile printing, also known as printing. When printing, the color paste is mixed with water-based elastic glue. The printing plate does not need chemical solvents, can be washed directly with water. It is characterized by good coloring power, strong covering and fastness, washable resistance, and basically no odor.
2, gravure printing. The finished products processed in this way are usually used in high-end packaging products. This process is divided into two steps, that is, using the traditional gravure printing process to print the picture on the film, and then using the film laminating process to print the film on the paper bag. Generally large-area color pattern printing paper bag products use this process. It is characterized by exquisite printing, the whole process of machine production, and short production cycle.
3, heat transfer printing. Heat transfer is a special printing in printing! The method requires an intermediate medium, that is, the graphic is first printed on the thermal transfer film or thermal transfer paper, and then the pattern is transferred to the packaging product by heating the transfer equipment. The commonly used medium in textile printing is heat transfer film. Its advantages are: exquisite printing, rich layer version, comparable to photos. Suitable for small area color image printing.

Now we often use paper packaging products every day, it really entered our production, is an important branch of packaging products, and now we have its advantages in printing, we believe that with the paper bag machine technology into the no, we can use the production process more perfect products.