The hottest new packaging technology kaleidoscope

New packaging technology "Kaleidoscope" (I)

products will change or damage in the process of circulation. In order to protect the quality and use value of products, we must pay full attention to many factors in the circulation environment and reasonably choose packaging methods. In the transportation and sales of goods, packaging technologies often used include blister, body fitting, shrinkage, stretching, vacuum, inflation, oxygen absorption, sterilization, cushioning, moisture-proof, rust proof, insect proof, mold proof and other packaging technologies. In view of the fact that many scholars have made a very in-depth study on the above packaging technology, the author will not repeat it. This paper will mainly introduce several new packaging technologies that have attracted more and more attention

unpacking warning (visible theft) packaging technology

unpacking warning packaging is also called visible theft packaging, which means that consumers can identify whether the commodity packaging has been opened from the appearance of the commodity to a certain extent. The U.S. Food and Drug Administration defines "open package" as: "a package of internal products can be obtained only by opening or destroying a display or barrier." At present, there are many kinds of unpacking warning packaging used around the world, including wrapping film, bundling, blister (blister) or body fitting packaging, heat sealing film or elastic wrapping film, internal sealing, unpacking warning bottle cap, sealed cardboard box, metal cans and composite containers

for any packaging manufacturer, the most important thing is to ensure that when the goods reach the following standards, please carefully understand the hands of consumers. When consumers can identify whether the goods in the package have been tampered with, and eliminate all potential safety hazards. The landmark event with serious consequences due to passive handling of packaging occurred in the United States in the 1980s. Tylenol pain tablets were artificially contaminated with highly toxic cyanide, resulting in death. Therefore, the design of unpacking warning has been paid more and more attention by many convenience food and drug manufacturers

the unpacking warning design has the characteristics of enhancing the trademark effect, but it is often ignored by many manufacturers. Seanfortune, head of Siebert head structural design, said: "people often regard the use of the unpacking warning design as a mandatory requirement, and then regard it as a part of the packaging process or packaging technology, which is separated from the original intention of the trademark in the process of application." "Any unpacking warning and child misuse prevention function should be regarded as an opportunity to enhance the brand effect. It can highlight the product personality and strengthen the three-dimensional effect of the trademark. They can not only express the characteristics of the product, but also enhance the affinity of the product through packaging." The simplest way to increase the trademark specific performance of the unpacking warning device is to press or print the company's logo or name on the unpacking warning device

environmental regulation packaging technology

the so-called environmental regulation packaging is to change the gas state in the packaging and ensure the quality of packaged products for a long time. For example, there are packages sealed with desiccants (oxygen getters), air replacement packages, etc. These packages can usually better protect drugs and extend the shelf life of drugs. Desiccants and oxygen absorbents used in environmental regulation packaging are used according to the characteristics of drugs, generally including calcium chloride, silica gel, fiber desiccants, etc. these substances will not react with drugs to make drugs ineffective or modified. At the same time, some new materials are gradually applied to environmental regulation packaging

briefly introduce several commonly used environmental conditioning packaging desiccants:

1 Silica gel: the greater the humidity of silica gel, the stronger the moisture absorption capacity, and the higher the temperature, the weaker the moisture absorption capacity. With the chlorinated diamond being classified as a class II carcinogen by the European Union in 1998, blue gum has been banned from production in Europe and the United States and phased out. A new type of safety color changing silica gel has emerged. It has the properties of blue glue, non-toxic, reusable, deep enough to fix the high dryness of the spring, etc

2. Sieve: molecular sieve is a synthetic polyhydrate aluminosilicate with cubic lattice, which has strong moisture absorption and can be deeply dried. At low temperature and high humidity, the moisture absorption capacity is stronger than that of silica gel and alumina

3. Fiber desiccant: fiber desiccant based on plant fiber is a recently developed dry product that does not pollute the environment and is easy to recycle. It soaks the plant fiber into the drying stock solution (including sodium salt and calcium salt), and after the process treatment, it can be made into a sheet form. It uses thousands of absorption gaps on the surface to absorb moisture, and overcomes the defects of drug volume increase caused by too large desiccant. It has the characteristics of convenient carrying and low cost. In addition, the integrated moisture-proof bottle cap that combines desiccant and plastic bottle cap has gradually come into people's attention

high barrier packaging technology

the so-called high barrier packaging technology refers to a packaging technology that uses packaging materials with high barrier performance to prevent external gases, moisture, etc. from entering the container and prevent the loss of gases and other substances in the container. With the improvement of food protection requirements, high barrier packaging technology is more and more widely used in processed food, vacuum packaging, inflatable packaging and so on. High barrier packaging materials are defined as materials with a thickness of less than 25 microns and a gas transmission of no more than 10ml/m2 · 24 hours · ATM. The films that meet this condition include aluminum foil composite film, vacuum aluminum coating film, PVDC coating film, Eval film and silicon coating film. Commonly used high barrier packaging materials include aluminum foil, nylon, polyester, polyvinylidene chloride, etc

composite technology and nanotechnology have made great contributions to the improvement of barrier technology. Although the composite process is complex, it helps to reduce the cost, and the size of products can ensure better performance. In the composite process, polyester is generally used for the inner and outer layers, and EVOH or nylon is used for the barrier layer. Nanotechnology is one of the main methods to realize the functionalization and barrier of products. For example, the American polyester factory and Eastman Chemical Company jointly developed the nylon nanocomposite imperm for pet coextrusion multi-layer blow molding, which is used as the barrier core material of PET/nylon/Pet three-layer bottles. The Chinese Academy of Sciences has also successfully developed nano PET beer bottles for beer packaging to meet the requirements of long shelf life. （1）

reprinted from: China Packaging News