Nonwoven shopping bag is a common shopping bag in China to promote the plastic limit, to promote environmental protection and to reduce the use of plastic bags. But the promotion of the use of non-woven environmental protection bags will undoubtedly increase the business cost of businesses. Most businesses will print advertisements on the environmental bags and use advertising fees to offset the cost of use. Now we have a brief introduction of several mainstream non - woven bag printing methods.

1. Water printing is used as a printing medium for water printing. It is more common in textile printing and also in printing. In printing, the color pulp is blended with the water - based rubber. There is no chemical solvent in the wash plate, and it can be cleaned by water. Its characteristics are good coloring force, strong cover and fastness, water washing, and basically no odor.

2, silk screen printing is often called "silk screen", which is the most common non woven cloth bag printing method, many manufacturers use this type of printing. Generally, it is manual printing, the advantage is: the price is cheaper; its disadvantage is: the color is not good control, the printed pattern is uneven.

3, heat transfer printing is special printing. This method needs intermediate medium, that is, first print the picture and text to the heat transfer film or heat transfer paper, then transfer the pattern to the non-woven fabric by heating the transfer device. The common medium in textile printing is the thermal transfer film. The advantages are: printing, rich patterns, comparable to photos. It is suitable for small area color image printing. The shortcoming is high price and high printing cost.

4. Intaglio printing is usually called a compound film nonwoven bag. The process is divided into two steps: first, the traditional intaglio printing is used to print the picture and text on the film, then the patterned film is combined on the non-woven fabric by the compound membrane process. This kind of printing method is used in the non-woven bags with large area color patterns in general. It is characterized by fine printing, machine printing in the whole process, and short printing cycle. In addition, the product has excellent waterproof performance, and the durability of the finished product is better than other non - woven cloth bags. The disadvantage is that it is in conflict with the concept of environmental protection, because its composite film is difficult to degrade.

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