Packaging Technology introduces five kinds of insects - pest control packaging, food packaging - Food Industry
Shrink film is a specially processed polyethylene stretch and cool film, because film directed tension residual shrinkage stress, this stress will be after the elimination of certain heat, making it both horizontal and vertical abrupt contraction while making the film thickness increased, shrinkage is usually 30?? 70% contraction in the cooling stage of the maximum, and to long term.
Pest control Package Technology can be divided into the following five: (1) inflatable packaging. Inflatable packaging is carbon dioxide gas or nitrogen gas replacement packaging container is not active in the air as a method of packaging technology, it is also known as gas replacement packaging. This package is based on aerobic metabolism aerobic microbial properties, in sealed containers to change the composition of the gas, reducing the oxygen concentration, inhibit the physiological activities of microorganisms, enzyme activity and respiration of live goods, to mold, corrosion, and fresh-keeping purposes.
(2) vacuum packaging. Vacuum packaging of articles into airtight containers, the vacuum in the container before sealing, so that sealed containers a little air packaging.
General meat products, processed grain products, and certain easily oxidized goods can be vacuum packaging, vacuum packaging can prevent, or reduce fat oxidation, and inhibited the growth of certain fungi and bacteria. Heated while its bactericidal, because of gas within the container has been ruled out, therefore accelerating the conduction of heat. Improve the efficiency of high-temperature sterilization, heat sterilization is also avoided, due to the expansion of Er Shi gas containers rupture.
(3) Shrink Packaging. Shrink packaging is shrink-wrapping materials (or within the package), then the film proper heat treatment, so that film shrinkage close to objects (or within the package) packaging technology methods.
Shrink film is a kind of specially treated polyethylene stretch and cool film, because film directed tension residual shrinkage stress, this stress will be after the elimination of certain heat, making it all happen horizontal and vertical sharp contraction, while making the film thickness increased, shrinkage is usually 30?? 70% contraction in the cooling stage of the maximum, and to long term.
(4) stretch wrap. Stretch wrap is used since the seventies a new packaging technology, which is evolved by the shrink packaging, stretch packaging is to rely on mechanical devices at room temperature, the elastic film are wrapped around the lap, Jin Guo, and In the end to seal a packaging. As the stretch wrap without heating, so consumption Energy Only one-twentieth of shrink packaging. Stretch wrap packing individual items can also be used for Tray Collection of packaging like packing.
(5) oxygen packing. Oxygen packaging is the second inflatable packaging vacuum packaging and the emergence of a new type of oxygen removal after packaging. Oxygen packaging is in sealed containers, the use of chemical reaction with oxygen with the oxygen dose response to remove the containers of oxygen, in order to achieve the purpose of protecting the contents. Oxygen packing is applicable to some items particularly sensitive to oxygen, the use to those who will encourage even trace contamination of oxygen Food Packaging In.
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