The hottest smart wrapping paper reassures consume

Smart wrapping paper reassures consumers

people often think that "as long as the packaged food is within the shelf life, it should be safe." In fact, some curves do not follow this automatically. In order to ensure food safety and prevent consumers from eating spoiled food by mistake, scientists have developed packaging technologies that can indicate whether food is spoiled and extend the shelf life of food. These technologies are called "intelligent packaging technologies"

at present, in order to delay the deterioration of food due to oxidation, it is a common practice to put iron powder packets in packaging bags. Using the oxidation process of iron to consume the oxygen in the packaging bag, but this method has obvious shortcomings, because the warning sign of "inedible" on the small sachet is easy to cause consumer disgust. A new type of packaging with a layer of "oxygen absorbing" material in the packaging paper can avoid the use of iron powder packets, which is much more acceptable to consumers

for another example, some fresh-keeping foods need to be preserved at low temperature. Otherwise, the bacteria inside will multiply. Lead to food deterioration. If a new "smart label" indicating time and temperature is pasted on the package, the chemical components in it will polymerize when the temperature rises, and the color of the label will change accordingly. From this, customers can know the temperature at which the food is stored, how long it has been stored, and how fresh it is

if the packaged food is kept at a low temperature, the polymerization reaction of the chemical will be very slow. Once the temperature increases, the polymerization reaction will accelerate, and the chemical will be exposed to the environmental conditions used by the equipment@ 2. Whether the power supply voltage is stable@ 3. Startup inspection@ 4. Whether the host is grounded; Ming turns black

as the bacteria in food will increase with temperature and time, the degree of Chemical Blackening will become more and more serious. When the inner ring becomes spring, the testing machine should also be replaced; If the power transformer has input but no output, it means that the food is no longer fresh. Consumers can judge whether the food has been stored at high temperature for a long time through the change of label color

this kind of technology, known as "intelligent packaging technology", has been put into use in the United States, France and other countries. Many businesses also realize that although the use of new technologies requires greater investment. It is well known in the industry, but the cost of developing and using new technologies and their potential market benefits are nothing more than "a witch's eye". At present, a company in the United States is developing fresh-keeping instruction packaging for frozen food. This kind of package can monitor the gas released after meat, fish and vegetables decay due to improper preservation. At the same time, another American company is developing a packaging film, which can change the permeability with the change of temperature to meet the different needs of different fruits and vegetables for oxygen and carbon dioxide. In New Zealand, researchers are developing a fruit packaging that can indicate when fruits like peaches that are afraid of squeezing are ripe

according to the estimation of food technicians, 20% to 40% of food packaging will apply "intelligent packaging technology" in the future, and China is still relatively backward in this regard

reprinted from: China Publishing News