Sterile high barrier packaging film nanotechnology applications

The betel nut industry in hunan province has three hundred years of history, packaging of betel nut, as using paper bag packaging, after upgraded to a polyethylene plastic bags. More betel nut packing is used currently is dry lu: su composite flexible packaging bags or plating aluminum plastic composite packaging bags. From the point of the effect of packaging, with the improvement of packaging materials, packaging quality is higher and higher, but the current widely used lu: su composite packaging cost is higher, and composite process using the chemical agent of uf resin, unavoidably exist in composite packaging film chemical, brought certain influence to the safety of the betel nut. And composite packaging have residual solvent smell, the serious influence the taste of betel nut, also have an adverse effect on consumers' body. Although existing lu: su composite packaging good barrier property, but did not solve the problem of antibacterial, betel nut mildew phenomenon appeared after long storage time. In order to solve the problems of betelnut composite flexible packaging, we adopt co-extrusion salivate technology, combined with nanometer antibacterial technology, developed by nanometer antibacterial high barrier packaging film, used in hunan betelnut industry has obtained the good effect. 1, nanometer antibacterial high barrier packaging film structure due to the ripe fruits of betel nut is a through special processing, has a special fragrance, packaging materials with high barrier property, in order to prevent betelnut mold in the process of storage, extend the shelf life, co-extrusion composite packaging film polyethylene lining using antibacterial layer, polyethylene has a good heat sealing performance at the same time, provide the bag behind the operation is convenient, the middle layer using barrier effect very good EVOH, ethylene - the material is Vinyl alcohol copolymer, resin is a kind of barrier performance is very good, its role is to provide enough for co-extrusion composite membrane barrier performance, outer using ordinary polyethylene, to keep them at low cost. With stable performance of import resin bonding layer, to ensure the quality of co-extrusion composite. Concrete structure is: the PE/AD/EVOH/AD/antibacterial, PE film thickness is 120 microns. Betel nut of betelnut packaging application as mentioned above, finished product is specially processed products, each manufacturer processing areca technology is also different, but the resulting product is pure taste, strong fragrance, for a long time to guarantee the quality of the products, using antibacterial high barrier packaging technology is an efficient way. We cut off the antibacterial packaging with the current widespread use of aluminum-plastic composite packaging contrast experiment. Two kinds of packaging materials production into bags, specifications for the commonly used ( 150 X 110mm） , 64 g per bag. And then stored under normal temperature, observe changes in appearance, aroma. Traditional lu: su composite packaging betel nuts around the shelf life of three months, upgraded to nanometer antibacterial high barrier packaging after its shelf life is at least more than six months, and solved the betelnut mildew problem due to the storage time is too long. From a cost point of view, nanometer antibacterial high barrier bag has a big advantage compared with the traditional lu: su composite bag also, lu: su composite bag currently costs ( 64 g bags) At zero. 15 yuan/a, and nanometer antibacterial high barrier packaging form the scale production cost about 0. 11 yuan. In conclusion is: 1, using nanometer antibacterial technology, the process can be made through co-extrusion salivate nanometer antibacterial high barrier packaging film, the film has excellent antibacterial properties and high barrier property. 2, nanometer antibacterial high barrier packaging film production process is simple, stable product quality, product performance indicators meet the betelnut packaging requirements, the production cost is lower than dry after legal production of blister packaging. 3, nanometer antibacterial high barrier packaging film for betel nut packaging can improve the shelf life.