The so-called "nano packaging" is the application of nanotechnology, using nano-composite (packaging) materials, so that the packaging has a super-functional or singular characteristics of a kind of packaging summary. The so-called nano packaging material is nano-composite packaging material with nanometer-scale structural unit, which is made of particles or crystals with a disperse phase size of 1 to 100 nm combined with other packaging materials or added. Nanostructures may become the basis for technological improvements. Once the critical dimensions of the material can be controlled, the characteristics of the new material and the functionality of the device can be enhanced, even beyond what we believe may be achieved.
Since the nano-sized grains are finer than those of the conventional materials, the number of atoms on the grain boundary is larger than the number of atoms inside the grains, forming a high-concentration grain boundary, thereby imparting properties of many different conventional materials for nanomaterials, such as high strength. , High hardness, high resistivity, low thermal conductivity, low elastic modulus, low density, etc. These excellent properties determine its wide application prospects in the future.
Green packaging aims to change people's traditional ideas, make full use of the comprehensive characteristics of packaging materials, pay attention to ecological balance, and make it greatly beneficial to the environment and human society. Nano packaging is the use of nanotechnology to change the traditional packaging materials and packaging technology, the most effective use of atoms and molecules, giving the material high-new features, focusing on saving resources, is greatly beneficial to human society.
New Progress in Nano Packaging Development in China
The research on nanotechnology in China started earlier. Some of the technologies are at the forefront of the world. Many new results have also been achieved in the field of packaging applications, and they have been partially commercialized.
In May 2004, Beijing Huajing Wufang Company launched its newly developed nano-composite functional film, which greatly improved the performance of the packaging film. The company uses nano-inorganic powder coating technology to modify the functional inorganic nano-powder to improve the compatibility of the nano-particles with the matrix resin and prevent the agglomeration of the nano-particles.
At present, the nanocomposite functional films developed by the company include antibacterial films, anti-UV films and antistatic films. The nano-composite antibacterial film effectively overcomes the problem of discoloration of silver-based antibacterial agents, and has high transparency, good weather resistance, non-toxicity, and low cost, and is common to most common microorganisms such as Escherichia coli, Staphylococcus aureus, and Aspergillus niger. Good antibacterial effect; its nano-composite anti-UV film utilizes a unique nano-powder dispersion process and polymer matrix composite preparation technology, so that the film not only has good UV shielding performance, but also has good transparency, weather resistance and chemical stability. Nano composite anti-static film using inorganic nano-materials and film substrate composite technology, can promote polymer grain refinement, so that the transparency of the film is good, and greatly improved the anti-static properties.
In July 2004, Gansu Province's key investment projects, investment of up to 200 million yuan "nanometer PET" beer bottle manufacturing projects to attract investment. The "nano-PET" beer bottle adopts nano-surface modification technology, which can meet the technical requirements for beer canning. Its barrier properties, acetaldehyde release, and fragrance dissipation are all lower than those of glass bottles. And beer bottled beer can be used for a shelf life of 12 months. The past glass beer packaging has the potential safety hazard of explosion, and the biggest advantage of the "nano-PET" beer bottle is that it will not explode. The project is preparing to install 35 production lines. After production, the annual output will reach 900 million, the output value will be 545 million yuan, the tax will be 127 million yuan, and the profit will be 159 million yuan. The investment can be recovered after 1 year and 3 months of production. This project is an original development project and has a whole set of technologies, including design and manufacture of equipment other than PET raw material production, preform design and production, and blow-molding. The technology combines nano-surface treatment technology with bottle manufacturing on a single production line. The cost is low and there is a good market profit margin. The overall cost of each bottle is only 0.21 yuan, and the cost of glass beer bottles is as high as 0.9 yuan. Once the beer bottle is put into production, the beer price is expected to drop.
China stipulated that during the 2008 Beijing Olympics, the audience could not bring metal and glass bottled drinks into the audience. Therefore, many companies have started to research and develop nano-scale plastic beer bottles to seize the market. Zijiang Enterprise and Zhongfu Industry have purchased equipment from HUSKY and plan to enter the nano-scale plastic beer bottle market. The Taiwan Plastics Technology Development Center is also interested in working with Taiwanese companies to develop nano-scale plastic beer bottles. The gas barrier performance of this kind of beer bottle is close to the level of the glass bottle, its strength and heat resistance are good, the quality is light, and the transportation cost is saved more than the glass bottle.
Other packaging companies in China have also paid increasing attention to the development and application of nanotechnology. Zhejiang Shangfeng Packaging Group Co., Ltd. is a leading company in the packaging industry in China. The company has achieved gratifying success in the development and application of nanotechnology in the packaging field. In order to promote the application of nanotechnology in the packaging field, the company has specially set up a packaging nanotechnology application research center.
Nanotechnology applied in packaging
Nanotechnology that can be applied in the field of packaging: nano ink, nano paper, polymer based nano composite (PNMC), nano antibacterial packaging, nano plastic packaging, nano adhesive, nano security printing, nano military protective packaging, nano green Packaging, nano-magnetic printing and so on.
Nano ink
Nanotechnology brings a huge change to the ink manufacturing industry in terms of pigments, so that the ink is no longer dependent on chemical pigments, but can choose the appropriate volume of nanoparticles to present different colors, such as TiO2, SiO2 nanoparticles are white, Cr2O3 Green, Fe2O3 is brown.
Inorganic nanomaterials such as A12O3 have good fluidity, and if added to the ink, the abrasion resistance of the ink film can be greatly improved.
Nano-scale carbon ink is conductive and has a good shielding effect against static electricity. It can prevent electric signals from being disturbed by external static electricity. If it is added to ink, it can be made into conductive ink, such as large-capacity integrated circuits, modern contact panel switches. Wait. If Ag is made into nano-scale instead of micro-sized Ag in conductive ink, 50% of Ag powder can be saved. This conductive ink can be directly printed on ceramic and metal, and the ink film is thin and even and smooth. If the Cu, Ni material is made of nano-scale ultrafine particles, it can replace palladium and silver and other precious metals conductive.
Because the nanoparticles have good surface wettability, they are adsorbed on the surface of the ink pigment particles, can greatly improve the ink's lipophilicity and wettability, and can ensure the stability of the entire ink dispersion system, so the nanoparticles added with nanoparticles The ink has been greatly improved in printability. In electrostatic copying, the use of magnetic nanopowders instead of non-magnetic toners, which are widely used today, can eliminate the need to add ferromagnetic particles as a carrier in the latter, thereby producing a single-component copying developer, which can save raw materials. , And can improve copy quality.
Because of the poor lightfastness of fluorescent anti-counterfeiting inks and the fact that the anti-counterfeiting mechanism has been deciphered and the anti-counterfeiting function has been lost, the nano-anti-counterfeiting inks that have been successfully researched by Guangzhou University for near-infrared absorption have demonstrated reliability, safety, stability, and aging resistance in small-scale test samples. Both have reached a satisfactory level. At present, this product has been used in high-tech fields such as packaging, ticket security and infrared sensors.
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A training chair is a seat designed specifically for activities such as training and meetings. It has the characteristics of comfort, durability, and ease of movement, which can meet the needs of different groups of people. Training chairs can be classified into various categories based on material, structure, function, and other aspects. Below will be a brief introduction to the classification of training chairs.
1. Material classification
The materials of the training chair mainly include metal, plastic, and fabric. Metal training chairs typically have strong stability and durability, making them suitable for long-term meetings or training activities. The training chair made of plastic material has the characteristics of lightweight and easy to clean, making it easy to arrange the meeting site at any time and suitable for use in multifunctional halls and other places. The training chair made of fabric has a comfortable sitting experience and good breathability, making it suitable for long-term meetings or training activities.
2. Structural classification
The structure of training chairs mainly includes single chairs, linked chairs, and foldable chairs. Single chairs are the most common training chairs, with each seat being independent and adjustable as needed. Chainage refers to the connection of multiple seats together, usually in the form of one or more rows, suitable for use in large training venues. Stackable chairs are training chairs that can be folded and stacked, saving space and facilitating storage and handling.
3. Functional classification
The main functions of the training chair are adjustable, rotatable, foldable, and storable. The adjustable training chair can adjust the height and angle according to personal needs, providing a more comfortable sitting posture. The rotatable training chair can rotate 360 degrees, facilitating communication and interaction with people around it. The foldable training chair can be conveniently stored and transported, making it suitable for use in multifunctional halls and other places. The training chair that can store items is designed with storage space below or behind the chair, making it convenient to store items such as stationery and documents.
In summary, the classification of training chairs mainly includes material classification, structural classification, functional classification, etc. Choosing a suitable training chair can provide a better user experience and improve the effectiveness of training and meetings.
Meeting Chair,,Foldable Chair,Customized Chair
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.officeroutdoorfurniture.com