In recent years, with the rapid development of business super stores and convenience stores and the formation of cold chains, frozen foods are becoming more and more popular because of its convenience and quick characteristics. At the same time, the rapid development of frozen food and the implementation of "food safety law" also put forward higher requirements for the performance and safety of frozen food packaging materials.

 

Zhang Jie, deputy general manager of the plastics industry, believes that the packaging materials for frozen food should not be deformed or cracked at low temperatures of the packaging machine and freezing equipment. "From the processing point of view, many kinds of frozen foods have fat oxidation and aerobic microorganisms, so it is necessary to prevent the contact between the products and oxygen. In storage, in order to prevent the moisture from the frozen food from volatilizing from the packaging, the free fat is permeated to the outside of the film, it has an effect on the flavor and internal quality of the products. Packaging materials have barrier properties and oil resistance. They must be highly blocked for gases and liquids. "

 

At present, the blowing plastic film widely used in the industry basically meets these conditions, but at the same time, there are several problems, such as "easy to run, not high transparency, not uniform material" and so on.

 

In the production process of blowing plastic film, "in the production process of blowing plastic film, there is probably 8%-10% error, that is to say, if the customer wants 65 micron membrane, in order to ensure the thickness of the thin film is not less than 65 microns, at least it should be made into 70 microns, and the wave costs a lot of material, this part cost only self. It's digested.

 

The new packaging film allows the automatic packaging machine to take 20% effect

 

In view of the above problems, Zhang Jie started the inspection and research all over the country from the end of 2012. What advantages do these new packaging films have compared with blown film?

 

In order to be more intuitionistic, there are two bags made of plastic film and new film made by the large plastic workers. It is obvious that the new film made of the new film is more transparent and transparent. "The new membrane technology, as well as the protection membrane technology used by computers and mobile phones, is very transparent and smooth, and the storage and transportation process is not easy to appear." Zhang Jie introduced that the new membrane can also make three layers of CO extrusion treatment, the middle layer can be aluminized, and the hardness and brittleness are all good.

 

"The production error of the new membrane is only 1%-2%, which can avoid a lot of material waste." He introduced that, in addition to reducing waste from the source, because of the low temperature and high smoothness of hot air, the packaging bag made of new type film is not easy to run off in the packing link. It can make the automatic packaging machine lift the efficiency 20%, greatly improve the packaging efficiency, and do not waste the packaging bag.

 

Jiao Jun, deputy general manager of Qingdao superior packaging machinery Co., Ltd., who are interested in this new type of film, said, "the packing speed of the packaging machine is generally fifty-six packs per minute. If it can really make 20%, it can be wrapped up to seventy or eighty packages. This is a great progress for the fast frozen food industry, I believe that the users are not." It will refuse.

 

"In addition, due to geographical differences, the southern air is humid, and the film made of the same material and technology is printed, and there is a gap between the colors of the north and the south." Zhang Jie said that the spec