In the modern food industry, labels and markings are not only important means of product identification, but also important tools for brand promotion and anti-counterfeiting. However, traditional paper labels often have problems such as easy to fall off, easy to tamper with, and pollute the environment. With the advancement of science and technology, laser marking machines, as a non-contact, high-precision, and environmentally friendly marking method, have gradually been applied to the field of fruit marking, bringing revolutionary changes to the fruit industry.
The basic principle of laser marking machines
The laser marking machine uses a laser to generate a high-intensity laser beam, and after adjustment of the optical path system, including reflectors, lenses, etc., the laser beam is focused on the surface of the material to be marked. When the laser beam irradiates the surface of the material, the material absorbs part of the laser energy, causing the surface temperature to rise, and then phase change or ablation occurs, forming a permanent mark. This mark can be text, pattern, barcode, etc., which is wear-resistant, clear, and not easy to fall off.
Advantages of laser marking on fruits
Environmentally friendly and pollution-free
Laser marking technology does not require the use of paper labels, inks, and glues, which reduces the pollution of traditional labels to the environment, and also reduces energy consumption and carbon emissions in the production process.
High precision and high definition
The laser marking machine can accurately control the displacement and energy of the laser beam to achieve high-precision marking, making the labels on the fruit clearer and easier to read.
Good anti-counterfeiting effect
The marks formed by laser marking are difficult to forge, which can effectively prevent criminals from tampering with information such as production date and production batch number, and ensure food safety.
Enhance brand image
Laser marking can directly print brand LOGO, date and other information on fruits to enhance the brand value and market competitiveness of products.
Does not affect the quality of fruits
The laser marking machine only acts on the fruit skin, has no effect on the flesh, and will not damage the taste and nutritional value of the fruit.
Practical application of laser marking on fruits
At present, laser marking machines have been successfully used for marking a variety of fruits, such as citrus, watermelon, pomegranate, etc. These fruits usually have a waxy layer on the surface. The laser beam can penetrate the waxy layer and interact with the pigment in the peel to change its color and evaporate the moisture in the peel, thereby achieving the purpose of marking. At the same time, the laser marking machine can also print information such as PLU code, QR code and barcode on the surface of the fruit, which is convenient for consumers to identify and trace the source.
Development prospects of laser marking technology
With the continuous development of laser technology and the continuous expansion of application fields, the application prospects of laser marking machines in the field of fruit marking are very broad. In the future, laser marking machines will be more intelligent and automated, achieving more efficient marking and wider application. At the same time, as consumers’ awareness of food safety and environmental protection increases, laser marking technology will gradually become the mainstream way of marking in the fruit industry.
The innovative application of laser marking machines in fruit marking not only solves the problems of traditional labels, but also enhances the brand image and market competitiveness of products. With the continuous advancement of technology and the continuous expansion of application fields, laser marking machines will play a more important role in the fruit industry.