With the advancement of science and technology, there are many printing processes for paper bags, shopping paper bags, environmentally friendly paper bags, gift paper bags, and paper packaging bags. According to statistics, there are five common paper packaging printing processes, as follows:

　　Shopping Paper Bags

　　Gift Bags

　　Jewelry Paper Bags

　　1. Hot stamping process: The hot stamping process is expressed by making the desired hot stamping or hot silver pattern into a convex plate and heating it, and then placing aluminum foil paper of the required color on the printed matter, and after pressing, the aluminum foil is attached to the printed matter superior.

　　2. Laminating process: Laminating process is a surface processing process after printing, which refers to a product processing process formed by covering a layer of transparent plastic film on the surface of a printed product with a laminating machine.

　　3. Concave-convex embossing process: This process uses the relatively high pressure of the letterpress printing machine to press the partial patterns or characters on the printed semi-finished products into concave-convex and three-dimensional graphics. The embossing process is mostly used in the post-processing of printed matter and paper containers. In addition to packaging cartons, it is also used in the printing of bottle labels, trademarks, book binding, calendars, greeting cards and other products.

　　Cosmetics Paper Bags

　　Wine Paper Bags

　　Kraft Paper Bags

　　4. Gravure printing: Contrary to letterpress printing, the graphic part of the printing plate is lower than the non-graphic part, forming a groove shape. The ink is only covered in the groove, there is no ink on the surface of the printing plate, the paper is covered on the upper part of the printing plate, the printing plate and the paper are pressurized, and the ink is transferred from the concave part of the printing plate to the paper. The printed products of gravure printing have thick ink layer and bright colors, and the printing plate has the advantages of high printing durability, stable printing quality and fast printing speed, so it has been applied in practice.

　　5. UV imitation metal etching printing process: UV imitation metal etching printing, also known as matte or sand surface printing, is to print a layer of uneven translucent ink on substrates with metal mirror luster (such as gold and silver cardboard). Later, it is cured by ultraviolet light (UV) to produce the appearance of etched or frosted metal surface similar to bright. UV imitation metal etching ink can produce suede and matt vision, which can make printed matter look soft and solemn.

　　Christmas Paper Bags

　　Special Paper Bags

　　Clothes Paper Bags

　　Shoes Paper Bags

　　In addition to the several printing processes introduced above, paper packaging printing processes also include printing processes such as refraction, die-cutting and indentation, hydrothermal transfer, plastic drop, ice flower, and scrape silver.

　　Dongguan Shishangmei Printing Co., Ltd.

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　　Tina

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