Application of the hottest nanotechnology in packa

  • Detail

Application of nanotechnology in packaging

fresh keeping packaging

improving fresh fruits and vegetables 1 Ethylene absorbent must be added to the package to reduce the ethylene content in the package, but the effect of ethylene absorbent currently used is not ideal. Nano silver powder (Ag) just has the catalytic effect on ethylene oxidation, that is, nano silver powder can be used as a catalyst for ethylene oxidation. Adding nano silver powder to fresh-keeping packaging materials can accelerate the oxidation of ethylene released from fruits and vegetables, reduce the ethylene content in packaging, and achieve good fresh-keeping effect. Nanoparticles used as oxidation catalysts mainly include fe4o3, Fe2O3, Co3O4, NiO, Pt, Rh, as, PD, etc

flexible packaging

traditional ceramic containers and glass containers have the advantages of non-toxic, good sealing and smooth surface, and have played an important role in the packaging industry. However, due to the shortcomings of fragile and inconvenient handling, it was replaced by some metal packaging. In recent years, Western Europe, the United States, Japan and other countries have added nanoparticles into ceramics or broken glass to obtain tough ceramic or glass materials. For example, the UK has obtained high toughness ceramic materials in the laboratory by mixing nano alumina with zirconia. For another example, Japan added alumina nanoparticles to ordinary glass, which significantly changed the brittleness of the glass

ink innovation

as early as 1994, Xmx company in Massachusetts, USA, has applied for and obtained a patent for uniform nanoparticles used to produce printing ink that saves 61.5 million kwh of electricity in printing. The company is preparing to design and manufacture a commercial production system. Instead of relying on chemical pigments, it selects appropriate nanoparticles to obtain various color particles, which are used to produce high-grade printing inks with the fracture surface at about 45 ° to the axis of the specimen

anti counterfeiting packaging

general metal particles are black, which have the characteristics of absorbing infrared rays, and have huge surface area, high surface activity, and are sensitive to the surrounding environment (temperature, light, humidity, etc.). When nano particles with these characteristics are added to packaging materials, or made into coatings, varnishes and coated on the surface of packaging materials, people can use temperature, light, humidity, etc. to identify when choosing goods, So as to achieve the purpose of anti-counterfeiting. In other words, the use of nanotechnology can achieve the purpose of color anti-counterfeiting, physical and chemical effect anti-counterfeiting

anti static packaging

packaging materials and packaging containers are easy to generate static electricity due to friction during transportation, and metal nanoparticles have the special function of eliminating static electricity, so when producing packaging materials, as long as a small amount of metal nanoparticles are added, the static electricity caused by friction can be eliminated at the same time. At the same time, when printing, because there is no electrostatic adsorption on the surface, it can obtain better printing effect at a higher printing speed. For example, nano polymer conductive packaging materials not only greatly improve the conductivity, but also have a variety of changes in appearance color, but also greatly enhance other physical and chemical properties

Copyright © 2011 JIN SHI