How are bags printed?

Plastic bags are printed using a process called flexography, which uses a flexible relief plate to make imprints. Each color of the print job requires its own plate. We can print a total of up to six colors, combined between both sides of the bag. 6 colors on one side, or 3 colors on each side. 

Flexographic plates can usually be used for many years without any degradation. However, after long use, the plate surface can develop cracks which will affect print quality. When plates do develop cracks, we recommend replacing the plates. When ordering plates through us, we will replace any cracked plates free of charge. 

Our manufacturing process is fairly simple. Film is extruded by heating small resin pellets and blowing the film into a tube, which is then wound onto a large roll. The roll of film is then wound through rollers on the press where it is printed, and then rolled up again as it comes off the machine. The next step is converting the film into bags. Different converting machines make different types of bags. 

American Plastic Mfg., Inc. |  526 South Monroe St, Seattle, WA 98108

(888) 763-1055  |  (206) 763-1055  |  FAX (206) 763-3946

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