Food Marking with Blue Laser System

Food marking and labeling

The term “food laser labeling” describes a phenomenon that primarily affects the packaging of fresh produce. Laser marking of food replaces physical labels on the surface of perishables with laser marking.

This is just one of many uses for compact blue lasers, a technology that is once again proving to be environmentally friendly. Labeling products directly on the skin, rather than using materials such as paper or plastic, reduces the environmental impact of the packaging process. A wide range of information can be engraved with a blue laser, including traceability codes, manufacturer names and brands, and expiration dates. All this data was typically printed on a conventional label that was affixed to the surface of the object.

Low energy usage, low use of potentially polluting chemicals, and fast operation make this laser labeling process ideal for the environment and the entire packaging process. The ideal tool for manufacturers

How it is done?

Laser marking of food is a special application of blue semiconductor lasers.
The laser marking process is basically based on the high energy density that the laser transmits to the workpiece surface. This process creates the desired marks on the surface.
A traditional laser marking system consists of his three parts: a scan head (galvano scan head) with an F-theta lens, a blue laser light source, and a computer with control software.
The scan head consists of two galvanometer motors fitted with high-reflection mirrors and her two components of an F-theta lens. The purpose of this device is to deflect and focus the laser beam onto the workpiece surface. A laser scanning head allows the laser beam to be directed over the entire workpiece surface.

Both the blue laser source and scanning head are controlled by an external controller connected to a computer. The computer is equipped with marking software that uses the appropriate parameters to achieve the desired marking. In this way, the speed, position and power of the laser beam can be controlled to obtain all types of images, logos, codes and markings. Laser marking systems are adaptable to many situations and easily integrated into existing systems.

Blue laser marking is suitable for all kinds of fruits and vegetables. However, best results are achieved with woody or thin-skinned fruits and vegetables such as: tomatoes, apples, grapefruits, walnuts, chestnuts, coconuts, pumpkins and more. Information such as traceability codes, expiration dates, manufacturer logos, and other personal information can be entered in this area.

Benefits of laser labeling
1. No consumables
2. Fast processing speed
3. Small power consumption
4. Greener production process

Laser marking is a safe process. Labeling affects only the most superficial layers of fresh food. All organoleptic properties of food are respected. They do not change taste, color, or smell. Also, durability remains the same. Some papers emphasize that laser marking does not affect product quality.