What are the mainstream printing methods for non-woven bags?

The mainstream printing methods for non-woven bags mainly include the following:
1、 Screen printing
Screen printing, also commonly known as "silk screen printing", is the most common and widely used process in non-woven bag printing. It uses a screen as a pattern carrier and is suitable for non-woven bags of various colors and materials. The advantages of screen printing are low cost, good printing effect, and the ability to meet the needs of different customers for patterns and colors. However, when the printing quantity is large, the cost will gradually increase. In addition, due to the manual operation of screen printing, there may be certain challenges in color control.

2、 Watermark
Watermark printing is named after its use of water-based elastic adhesive as the printing medium, and this printing method is more common in textile printing. When printing, the color paste is mixed with water-based elastin paste, and no chemical solvents are needed for plate washing. It can be directly rinsed with water. The characteristics of watermark printing are good coloring power, strong coverage, high fastness, and water resistance, while there is basically no odor. This printing method is suitable for customers with high environmental requirements.
3、 Gravure printing
Gravure printing is commonly used for printing large area colored patterns on non-woven bags. This process is divided into two steps: first, traditional gravure printing technology is used to print graphics and text onto a film, and then the patterned film is laminated onto non-woven fabric through a laminating process. The characteristics of gravure printing are exquisite printing, machine production throughout the process, short production cycle, and the product has waterproof performance and good durability. However, due to the difficulty of degrading composite films, this printing method conflicts with environmental protection concepts to some extent.

4、 Heat transfer printing
Heat transfer printing is a special printing method that requires printing the pattern onto a heat transfer film or paper, and then transferring the pattern onto non-woven fabric by heating it with transfer equipment. The advantages of heat transfer printing are exquisite printing, rich pattern layers, and comparable photo effects, especially suitable for small area color image printing. However, the disadvantages of heat transfer printing are high prices and printing costs.
In summary, the mainstream printing methods for non-woven bags include screen printing, watermarking, gravure printing, and heat transfer printing. Different printing methods have their own characteristics, and customers should weigh their needs and budget when choosing. Meanwhile, with the continuous improvement of environmental awareness, more and more customers are paying attention to the environmental performance of printing methods, which will also promote the continuous innovation and development of non-woven bag printing technology.