Nanotechnology Applications In The Packaging Industry
Nanotechnology is the twenty-first century, the most promising techniques, the use of nanotechnology Nano-packaging materials synthesis, add, or directly using the nano-modified nano-materials to product packaging to meet specific functional requirements of the technology or packaging products, said The nano packaging. Nano-packaging to change traditional packaging design, packaging technology and technical methods, give full play to the comprehensive characteristics of packaging materials to maximize the functions of packaging, protection products, conserve resources, protect the environment and create the best social and economic benefits.
Nano-materials and technology Nanometer is a unit of measurement geometry, is defined as 1 × 10-9m, slightly up is equal to 45 atoms in length. Nano-materials are mainly refers to the geometry of the material within at 100nm, with a special performance of materials. Nano-materials including nano-particle materials, nanocrystalline materials and nanocomposites.
Nanotechnology refers to the nanometer scale (1nm ~ 100nm) on the study material (including atomic, molecular manipulation of) the characteristics and interactions, and the use of these features interdisciplinary science and technology. When a substance is split to the nanometer scale, the quantum beginning to affect physical performance and structure. Nanoparticles made by the final materials and general materials, the mechanical strength, light, sound, heat and other aspects of performance are greatly different. The ultimate goal of nanotechnology is directly atoms, molecules and materials on the nanometer scale has shown these characteristics to create products with specific functions.
Traditional packaging materials by nano-modification, the material has high strength, high hardness and high toughness, high barrier, high degradability and high antimicrobial capacity to achieve the most beneficial in the packaging functions, while achieving a environmental performance of green packaging materials, resources, performance, performance reduction, recycling and processing performance requirements, demonstrate the superior value of green packaging, and promote the development and promotion of packaging design, production, use and recycling and other revolutionary changes in technology industries.
Nanotechnology applications in the packaging industry
Nano fresh-keeping packaging materials Nano packaging materials can improve the preservation of fresh fruits and vegetables and other food preservation effect and prolong shelf life. In the packaging, the fruits and vegetables release ethylene reaches a certain concentration, the fruits and vegetables will speed up the rate of decay. To solve this problem, in preservation, and packaging should be added to ethylene absorbent to reduce packaging in ethylene content, improve the quality of products, but the use of ethylene absorbent not ideal, nanotechnology can solve this problem. Ag nano-powder with catalytic oxidation of ethylene, in preservation, and packaging materials of Nano Ag powder, fruit and vegetable food can speed up the oxidation of ethylene release, so as to achieve a good preservation effect.
In addition, tissues, corrugated box manufacturing process, you can join the nano-porous ethylene gas absorbing powder to prevent ripening. Such nano-absorbing powder is made of white silica as raw materials to silicon dioxide as the main component of the porous powder. As the white silica for ethylene adsorption capacity than activated carbon, zirconium and rare earth zeolite to be good, so by adding nano-silica powder white paper as the corrugated board in mount better preservation effect.
Nano ink With the packaging and printing quality requirements on continuous improvement, customer packaging requirements of not only high quality, and to comply with environmental protection, security and other special needs, so the ink is also a higher demand. Fineness and purity of ink on the packaging greatly affect product quality. To print high-quality packaging products, must have fineness of ink as a guarantee of high purity. Fineness of ink and pigments, fillers, the nature and size of the particles are directly related to the fineness of the ink means the pigment ink (including filler) particle size and pigment, filler compound found in links uniformity, both reflected in the quality of packaging products, also affect the rate of plate printing resistance.
Research indicates that the semiconductor nano-particle surface through chemical modification, the particles in the surrounding medium can strongly affect their optical properties, absorption spectra showed a red shift or blue shift.
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