威廉希尔官方下载Feb 07, 2020
Food safety has always been a very important issue for the State Administration of Supervision. In the past incidents, food safety has caused a lot of distress to our lives. At the food level, we must strictly guard and make our lives a little more joyful. Fewer substandard foods. Therefore, the application of new technology laser marking in the food industry has become inevitable.
Application of laser marking machine in the food industry The requirements of food packaging in the packaging industry are the highest, and they are closely related to people's daily life, so they have always been highly concerned by people. With the continuous improvement of living standards, while the consumption power of people is increasing, the requirements for packaging are also constantly being strengthened. In fact, food packaging has a negligible effect on the sales of food. After all, everyone likes things that look beautiful and easy to use ... In the consumer goods industry, packaging has always been an important aspect of special attention, especially Food safety is the top priority of food packaging. However, while attaching importance to food safety and beautifully packaged appearances, people often overlook many details, such as neglecting how people feel when they open food packaging. For the most commonly used sealed packaging at present, problems often occur, and sometimes even cause some minor injuries.
The current advanced laser technology gives us a solution to the problem. The laser system can select a single film layer in the flexible packaging for scribe. In this way, the perfect easy to tear effect of the flexible package is achieved, and the integrity of the film can be maintained, so that the outer film is intact and not damaged, which can effectively prevent the problems of light and moisture in the package. Today's advanced laser marking machine systems can completely scribe lines in a freely combined manner. For example, many snack packages are currently used to design a line based on the outline of the printed pattern on the package. The advantages of laser scribing systems. And when the packaging belt needs to have holes, the laser system can make "ventilation and freshness" perforation of the packaging. This is the most advanced technology in the world. Perforation can increase the shelf life of the products in the packaging, or cater to the product through the microwave oven. Pressure on food packaging after heating. Now, the laser perforation line can achieve the effect of tearing the entire package along the dotted line. Unlike mechanical tools such as screwdrivers or punches, laser work does not require direct contact, and only minimal wear and cutting can provide the best processing method. Application of laser scribing technology: Laser scribing is a technology that uses laser to achieve "easy tearing" effect on multilayer composite packaging materials. Traditional tools tend to draw the line too deep, causing damage to the composite layer of the product packaging; or the line is too shallow, making consumers need to spend a lot of effort to tear the packaging.
Laser scribing technology is a more advanced and flexible technology. Laser scribing technology focuses the laser energy on the film layer that needs to be scribbled without damaging the entire film. Because composite films, such as PET, PP, or PE, have different absorption and emission wavelengths of carbon dioxide lasers, when one film absorbs laser energy and disappears, the other material film layers remain 100% intact. To any impact. On the other hand, the aluminum foil layer or other metal-plated film becomes a barrier that prevents laser light from reaching other material layers. Therefore, the characteristics of these materials can enable laser technology to accurately position and scribe on packaging materials. At the same time, the tear line is clearly visible through the human eye, so tearing the packaging apart is a breeze for consumers. It is worth noting that the laser scribing technology is a non-contact and wear-free process for food packaging, so it also ensures that the products in the package will not be damaged due to the packaging process, ensuring the stability of the products. And reliability.
Advantages of laser marking technology for food packaging:
1 Only scribe the selected film layer, other film layers are not affected
2 Free to choose the shape of the line
3 less loss during production, reliability
It is well known that the quality and shelf life of perishable foods depend on the balance of air circulation and humidity in the packaging of the product. Therefore, in order to achieve sufficient small holes in the packaging, laser technology has become the first choice for perishable food. With the current leading position in the field of laser scribing and laser punching technology: high-pulse carbon dioxide laser can be used in processing equipment to punch holes in each film layer of packaging materials. Special technology, each small hole has melting around it. , Can effectively prevent the expansion of small holes and avoid damage to the integrity of the package, and can have good ventilation and moisturizing effect at the same time.
Advanced laser equipment can provide a variety of solutions based on product output or process requirements. It can provide a beam splitter with multiple focusing heads to control the direction of drilling. It is achieved by using a polygonal prism to distribute the speed of light to multiple focusing heads Scroll at high speed. Now, the best flexible packaging climate management packaging has a pore size between 60 and 300 microns. The arrangement of the pores can be changed more practically and can be synchronized with printing. Laser drilling technology is also suitable for packaging with pressure changes, such as food packaging that requires microwave heating. For some relatively hard packaging materials, such as PE / PE composite materials, laser drilling technology can make perforation lines that contain 5-50 small holes per 1 cm, which can completely achieve the effect of tearing the packaging along the dotted line. (Article source: News Online)