[Abstract]: We all know that with vacuum packaging, there will be great guarantees for food packaging in the future. Various packaging skills will continue to emerge in the modern market. The use of high technology provides a perfect foundation for the improvement of food packaging. In many packaging skills, each has its own technical advantage, and one of the packaging skills used today in food packaging machines is the atmosphere packaging skills. As the food packaging machine, the food packaging machine has a long history as a food packaging skill. As early as the 1930s, Europe and the United States began to use CO2 gas to preserve meat products. In the 1950s, N2 and CO2 were developed. Gas replacement of canned beef and cheese cans has extended the shelf life; in the 1960s, many foods such as meat, fruits, vegetables, cakes, tea and dairy products were successfully developed due to the developme
We all know that with vacuum packaging, there will be great guarantees for food packaging in the future. Various packaging skills will continue to emerge in the modern market. The use of high technology provides a perfect foundation for the improvement of food packaging. In many packaging skills, each has its own technical advantage, and one of the packaging skills used today in food packaging machines is the atmosphere packaging skills.
As the food packaging machine, the food packaging machine has a long history as a food packaging skill. As early as the 1930s, Europe and the United States began to use CO2 gas to preserve meat products. In the 1950s, N2 and CO2 were developed. Gas replacement of canned beef and cheese cans has extended the shelf life; in the 1960s, many foods such as meat, fruits, vegetables, cakes, tea and dairy products were successfully developed due to the development of various airtight plastic packaging materials. Gas replacement packaging technology was chosen; in the 70s, the inflatable packaging of fresh meat was widely used in Europe and the United States, and the atmosphere packaging was flourishing all over the world. It can be said that the atmosphere packaging technology is very experienced in the use of food packaging machines, and it is very common in the modern food packaging profession.
Vacuum packaging machine
The modified atmosphere packaging is also known as MAP or CAP, domestically called modified atmosphere packaging or replacement gas packaging, and inflatable packaging. The packaged materials with gas barrier function are used to package the food, and according to the customer's practical needs, a certain proportion of O2+CO2+N2, N2+CO2, O2+CO2 mixed gas is charged into the package to avoid food physical, chemical, biological and other aspects. The quality declines or slows down the rate of quality degradation, thereby extending the shelf life of food and increasing the value of food.
Three common applications for modified atmosphere packaging:
1, the use of CO2 in food packaging
China has successfully used nanotechnology to efficiently catalyze the formation of degradable plastics from CO2. That is, the catalyst for preparing plastic using CO2 is "destroyed" to the nanometer level, and the polymerization of the catalytic molecule and the CO2 is completed, so that about 130 g of CO2 per gram of the catalyst is catalyzed to constitute a new packaging material containing 42% of CO2. It is widely used as an environmentally-friendly material with excellent degradability.
2. The use of nitrogen in food packaging
Nitrogen (N2) is an ideal inert gas. It has special effects in food packaging: it does not react with food and is not absorbed by food. It can reduce the oxygen content in the package and greatly multiply the growth of microorganisms such as bacteria and mold. To slow the oxidation and decay of food, so as to keep food fresh. Nitrogen-packed foods can also avoid the kneading and breaking of food, food bonding or shrinking, and insist on the shape, dryness, crispness, color and aroma of food. Nowadays, nitrogen-filled packaging is rapidly replacing traditional vacuum packaging, which has been applied to fried potato chips and chips, oil cooking foods, etc. Affected by consumers, especially children and youth, nitrogen-filled packaging is expected to be used for more food packaging.
3. Application of compound gas in packaged food
The composite modified atmosphere packaging is collectively referred to as MAP packaging in the world. The modified atmosphere is generally composed of CO2, N2, O2 and a few special gases. CO2 can grow and multiply according to most aerobic erosive bacteria and molds; O2 grows and multiplies according to most anaerobic rot bacteria; insists on fresh meat color, maintains oxygen and oxygen and freshness of fresh fruits and vegetables; N2 is used as filling gas. The composition ratio of the composite gas is appropriately selected according to the type of food, the preservation requirements and the packaging materials, and the packaged food has a high preservation quality, a good nutritional composition, a true arrival of the original trait, and a delayed shelf life. Composite modified atmosphere packaging has been widely used at home and abroad.
With the rapid development of scientific skills, commodity packaging has become an important means of promoting sales and enhancing competitiveness. Many new skills, new processes, and new ideas have been applied to packaging planning, packaging processes, packaging equipment, packaging new materials, and packaging new industries. Packaging planning has entered a computerized era, and a planning approach that relies on computers and various information systems for rapid replacement has emerged. Today's planners need to have the basic skills of packaging planning, and more importantly, they will consider, appreciate, and understand, while computer skills are based on the aforementioned skills. Packaging planners also need to know the relevant packaging manufacturing process, how to choose materials, how to use modern packaging manufacturing equipment, such as prepress processing equipment, postpress processing equipment. Not only is the packaging planning moving toward computerization, but the application of packaging skills in the packaging machine is now combined with the computer. This is also an important trend in the current packaging machine career. In the future, there will be more skills, computers. The advantages will only get better and better.
The molding of the package includes the molding of metal packaging, the molding of plastic packaging, the molding of paper packaging and the molding of other composite data packaging. The packaging of many different materials has been simplified and scientifically completed by means of air pressure, impact, wet processing and vacuum skills. For example, the packaging boring process is also turned from the usual hot baking to the ultraviolet curing, making it dry, more energy-efficient, fast and reliable. The printing process of packaging is also more diversified; especially for high-end packaging printing, silk screen printing and gravure printing have been selected. There is also a security packaging manufacturing process that has shifted from partial printing or manufacturing to integral large-area printing and manufacturing security printing. The packaging process is the fastest, fastest-changing, and most diverse skill, and it is precisely because of its richness that it will bring more aspects to the advancement of the packaging machine.