The printing of bags is a technical and extensive subject. A variety of printing methods are adapted to print the packing stuff. The technology is getting more diverse and powerful in occupying the space in every field. Similarly, the printing process has also influenced remarkably by this modernized technical methods. The shopping bags and containers are not complete without printing. The final and stunning looks are displayed after designing and printing appropriately. Some of the best methods are shared as follows.

Lithography or Offset Method

An aluminum printing plate is used to print the images. The plate contains the ink and transferred it from this plate to rubber blanket for printing surface. This process is easily applicable to print the plastic bags, cardboard custom boxes, paper bags such as kind of other stuff. But they all must have the flat surface. The individual sheets can be automatically fed in this method. The papers get printed in various color in a specific order started from black then cyan and magenta followed by the yellow. This method is also used to print the wholesale custom packaging. The huge volume can easily printed. Nowadays, it is considered as most widely used the method to print the books, stationery, corrugated boards, newspaper, and posters.

Flexography Method

In this process, the rubber plate is used to print the images on the surface. The ink is transferred from the rubber plate to get the printed packing. The papers, metals, cell phones, plastic and many other materials related to packing are printed by using this technique. The main purpose of flexography is to print versatile labels for the brands. You can also print the labels and logo for your custom printed boxes by using this method.

Digital Printing Method

The popular and highly demanded technique is digital printing. There are several ways of digital printing. But the most popular and dominating technologies are inkjet and xerography.

• Inkjet

The images are printed by creating small droplets from the ink. This is done by the nozzle of the print head. It may be one head or more than one. You can print the wide range of the paper bags, customized packing, plastic bags, posters, books printing and even floor tiles. It is the cost-effective way to get the printing of the desired bags.

• Xerography

The printers like laser printer are known as Xerography printers. The images are formed by applying the charge to the metal cylinder known as the drum. The tonner particles are attracted by electric charge. Then they are transferred to the media for printing. Make sure that the toner is fixed appropriately or not before using. They are using in offices, small-scale business, packaging industry and for documentation. Labels and billboards are also printed by this digital technology.

The Names of Some Other Digital Technologies Are As Follows.

• Direct thermal printing
• Dye-Sublimation
• Thermal ink transfer method

The digital method is mostly used to print corrugated box, cartons, prototypes, and labels.

Screen Printing Method

The name of this method is showing that printing process relies on the screen that is woven fabric piece. Some segments are filled with the non-permeable stuff while the remaining parts can also be filled with the ink. It is not necessary that the surface must be flat. It is the great advantage of this technique. It easily prints the extensive range of packing materials including paper, glass, bottles, folding cartons and metal tins.

Gravure/ Rotogravure

The images are engraved in the printing cylinder. The cylinder is filled with ink and then transferred it on the materials that are needed to be print. It is beneficial because the high volumes of the packing stuff can easily be printed. It is suitable for the stand-up pouches and flexible packing materials.

Some Additional Methods

There are come general printing methods that are used for printing.

• Flocking
• Intaglio
• Thermography
• Latter press
• Pad printing method