In the marking operation of the food packaging industry, compared with traditional inkjet printers and laser printers, laser marking machines have the features and advantages of permanent, high precision, high speed, clear, environmental protection and pollution-free.

For a long time, consumers like to look at the information on the packaging bag when buying food to judge whether the food is fresh. Generally speaking, the labeling information on these packages is an important and intuitive basis for consumers to judge whether the food is safe, and can effectively inform consumers about food sources, food materials, food expiration dates, storage conditions and precautions. But at present, the news has reported that criminals in the market have tampered with information such as the production date of food, which has caused hidden dangers to food safety. This issue deserves attention.

As an important part of commodities, food packaging protects food all the time. The safety of packaging materials and the correct information are directly related to food safety. Obviously, there are many problems in the current packaging industry: some manufacturers blindly pursue novelty and beauty, and ignore the quality of packaging materials; some personalized packaging design and production processes are complicated and difficult to mass produce; and some unscrupulous manufacturers directly produce The date and other information were altered, which seriously affected the reliability of the information. There are still many problems of this kind, and packaging design methods need to be upgraded urgently to allow consumers to buy with confidence.

In the process of marking product packaging information in the food industry, the main processing equipment is ink jet printers and laser printers. Obviously, the widely used ink jet printers cannot keep up with the development of this industry: the markings of ink jet codes can be tampered with and erased, and are easy to wear; ink jet printers often block the nozzles, requiring professional maintenance personnel carry out maintenance; people’s awareness of environmental protection continues to increase, and the requirements for ink safety and low pollution are getting higher and higher; inkjet printers are difficult to achieve high-efficiency one-item one-code marking for large-volume assembly line products. The emergence of laser marking has solved these problems and has been widely used in the industry. Laser marking can evaporate the surface material of the package and expose the deep material, thereby engraving exquisite patterns, trademarks and text.

Laser marking can use high-energy density laser to locally irradiate the workpiece to vaporize the surface material or produce a chemical reaction of color change, thereby leaving a permanent mark. It is a marking method with high marking accuracy, high speed and marking. Clear and other characteristics, and environmental protection and pollution-free, the entire marking information is portrayed on the product packaging, so it is difficult to tamper and counterfeit. On the whole, laser marking is better than traditional coding methods. 

Released by Jinan APEX Machinery Equipment Co., Ltd.