Nanotechnology has become a hot topic in today's science and technology. Its scope of application is not limited to cosmetic ingredients, but also directly relates to the field of product packaging. Many major global operators have started to research nanotechnology. What is nanotechnology? It is estimated that the demand for nanotechnology products in the global market has reached several hundred billion U.S. dollars each year. By 2015, nanotechnology goods and services may even be worth as much as $1 trillion.
The term "nanotechnology" generally refers to the control of atoms, molecules, and supramolecular structures so that they can create the same, but more complex, structure of the original molecules. One nanometer (nm) is equal to one millionth of a millimeter or one billionth of a meter [1]. When people talk about structures smaller than 100 nanometers (such as atomic structures or atomic polymerization structures), or when it comes to using certain large structures that cannot achieve chemical or physical effects, people often involve nanotechnology. Engineers can use nanotechnology to make fine nanoscale structures and use these structures to produce certain effects. When we observe some materials at the nanometer level, we see some behaviors that are usually difficult to observe. Nanoparticles usually have a large specific surface area, and they have a strong exclusivity between each atom inside. These nanoparticles can form a scratch-resistant hard layer on the outside of the metal, making the metal look "transparent" and resistant to low temperatures, and also become plastic-like soft at high temperatures. The surface of nanotechnology-treated materials can be waterproof or dust-proof, and when combined with a large number of other materials, it may even become an "explosive" material. Therefore, it can be said that nanotechnology can infiltrate into any substance in the world infinitely small.
About 35 countries around the world have joined the "nano" innovation competition [2]. Annual public or private research projects for nanoscience and nanotechnology can reach a budget of 9 billion U.S. dollars.
Inno International Co., Martin Kobenko stressed that paper is a flexible, versatile material that is composed of a variety of materials. Paper is undoubtedly an ideal choice for nanotechnology advancement, but it is curious that the paper industry (paper, paperboard, and specialty papers) seldom involve nanometer equations.
However, paper using nanotechnology has quite a few benefits:
The coating is thinner, smoother, tougher, and non-toxic;
The surface of the paper is smoother, so that the printing effect is better, and nano inks can also be selected for printing.
The whiteness and brightness of the paper surface are higher;
If paper is rich in minerals, it can enhance the properties of minerals and reduce the amount of fiber used;
Higher grades and lighter weights for paper and board;
"Smart" document (RFID) technology;
Reduce the demand for raw materials for paper products. At the same time, paper can be biodegradable and easier to recycle.
Nanofiltration technology helps clean production wastewater.
However, some paper industry chemists and engineers have already studied leading-edge nanotechnology. Changes in pore structure have now been observed at the nanoscale, which will likely bring significant changes to the optical and printing industries. In addition, nanotechnology has also demonstrated its superiority in the field of light metal surface treatment such as aluminum. For example, electroplating a chromium layer on a light metal surface using “sol-gel†nanotechnology can eliminate the toxic substances contained in this material. In fact, the metal and metal oxides of the contained nanoparticles have already started to form a gel during the drying process (in the liquid state, they are lacquer-like). The material is heated to about 160°C, a layer of lacquer solvent is evaporated, and then the nanoparticles are bound to a stable polymer network.
Claire Garnier pointed out in her article "Alchemy of Nanotechnology" () that Quertech Ingenierie, which was established in 2005 by Dennis and Geirnalek, uses nanotechnology to make "aluminium harder than ever," and thus gains international Socially recognized patents. Another example that shows the impact of nanotechnology comes from the glass industry. Canadian safety glass manufacturer Prelco has proposed a protective hydrophobic coating. We know that water can adhere to the glass surface because of the so-called "surface tension" of the molecule. The protective layer using this patent is called "nano-fusion" and the water molecules are no longer in direct contact with the glass. The physical properties of the coating remove the beads from the glass surface. The main advantages of this technology are: waterproof and anti-oil, good scratch resistance, prevent dust and stains, prevent handprints, antibacterial, effectively increase the gloss of the glass surface (by 20%), and make the glass surface Smoother (30% smoother).
In the field of plastics, the latest example is the invention of nanoimprinting hydrophilic films. The researchers designed a nanostructured mold for imprinting on a normal hydrophobic plastic film, using nanostructures to increase its hydrophilicity. With just one shot, water droplets can be driven off the surface of the film. Forming techniques can also modify the surface properties of materials, whether they are hydrophilic or hydrophobic.
Some packaging manufacturers are also actively preparing to launch nanotechnology products in 2011. And these "nano-packs" are only involved in the production process (including the production of raw materials, components, etc.), or are they going to turn packaging into nano-packages? The field in which nanotechnology is actually involved is very broad. We are now in the experimental stage and actually are "capturing risks." And there is a question behind this topic – what packaging manufacturers want to bring to the two groups they value most (customers and consumers). However, when we look at the process of nanoscale technology toward large-scale production, it may reduce production costs from long-term interests, but it will also lead to disputes among manufacturers. We must realize that this is not the main purpose of nanotechnology research.
The final question is: "Does nanotechnology be the new leading technology or the future of mass production?"
Thorn, of Alcan Packaging Beauty, said that his company has been following and following the progress of nanotechnology, because the integration of nanotechnology into polymers, paints and even glue production can effectively improve basic material properties such as hardness and strength... In fact, the follow-up effect of the project research was very good. We participated in the "nano-hybridization" project of the European project. There are also many other companies joining together, such as Fiat, French CEA, Pirelli and many other companies. The purpose of the project study is to obtain more scratch-resistant polyolefins or polyolefins with improved barrier properties. There are still other projects that continue this study. After years of research, although everything we hoped for initially was still ahead, the application of nanotechnology has now become possible. We are now shifting our assets to specific applications.
Pennyffer Yanni Brunett said: “When it comes to the topic of hot topics, the expression of nano-components, there are two opposite situations. First, some manufacturers use nanotechnology and Nano-components, in addition to some manufacturers are waiting patiently until the definition of nano-compositions enters European regulations[3] in 2013, and then introduce nanotechnology.â€
Saidel CEO Andre said: "Obviously, this new technology is one of Seidel's main challenges in the coming years. We are keeping close cooperation with this special university. Of course, our project not only involves aluminum. There are many other materials. In addition, the application of nanotechnology is not limited to the surface treatment of materials, but also involves other, for example, environmental issues."
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