[Chinese Packaging Network News] In today's daily life, the development of many industries, the expansion of each area will be with the progress of society, the increase in population will increase the demand for Blister, but also more and more.
Progress, starting with material innovation
In recent years, new aseptic packaging materials have emerged in an endless stream, further promoting the development of aseptic packaging. Nano antibacterial packaging materials have become a hot topic.
Of course, paper-based composites are also evident. Paper-based composite materials are generally composed of various materials such as paper, polyethylene, aluminum foil, etc. Aseptic packaging in many countries in Western Europe uses such containers more often, especially aseptic brick boxes produced by the Swedish Tetra Pak Packaging Company. Diamond bags are typical. It has excellent resistance to oxygen and water vapor, and has good printing and decorative effects. The paper container is sterilized by a combination of hydrogen peroxide and heating. The packaging material is first passed through a hydrogen peroxide bath, and then the tube-shaped heating element is used to fill the air at high temperatures during filling. The hydrogen peroxide liquid film on the inner surface of the paper rapidly decomposes into water and new ecological oxygen. Since the oxygen has a strong sterilizing ability, the container can be made sterile.
If it is based on the nano-transformation, what will happen? With the transformation of nanotechnology, pure natural basic materials can exert an amazing bactericidal effect, can make bacteria cells degenerate or precipitate, and once they encounter water, they will exert greater killing power on bacteria.
The product made of nano-antibacterial packaging material has strong adsorption capacity, strong penetration, and strong antibacterial effect after multiple washings. Composite cans are a new type of packaging products that have developed rapidly in recent years. It is made of cardboard, plastic film and aluminum foil in a certain way and then sealed with a metal or plastic cover. The product has good barrier property, water resistance and oil resistance, can replace metal and glass cans, and reduce product cost, which is beneficial to waste treatment. However, due to the difficulty of killing heat-resistant bacterial spores in the current composite tank, it is limited to the filling of highly acidic juices.
Demand Brings Plastic Packaging Environment
The quest for blister brings new opportunities for sterility.
Plastic bottle aseptic packaging has been popular in developed countries, but its first-phase investment is relatively high, plant sanitation conditions and quality requirements of staff are strict, and it will take a long time to popularize in the Chinese market.
Generally, people think that aseptically packaged dairy products have the advantages of good taste and high nutritional value compared with double-sterilized dairy products. As a result, dairy companies are considering actively deploying aseptic packaging. At present, the popular aseptic packaging in China is mainly a carton. Packaging, paper pillow packaging and membranous pillow packaging. The sterile barrier system is also called primary packaging or Sterilization Barrier System (SBS). This type of packaging is required to be sterilized, to achieve aseptic processing and clean opening, to provide acceptable microbial barrier properties, to protect the product before and after sterilization and to maintain the sterility of the system within a certain period of time after sterilization Environmental packaging system. For the second and third types of implanted medical devices, such as orthopedic products, cardiovascular intervention products, surgical implants, etc., hard blister packaging is almost a hard demand.
In today's daily life, the development of many industries and the expansion of each area will follow the progress of society. The increase in population will increase the demand for plastics and will increase. It will also be more and more critical in many aspects such as quality, appearance, shape, price, design and so on. Blister packaging is born in this environment, and has great potential for rapid development in recent years. Today, it has been widely used in tobacco, food, medicine and other industries.
List of various aseptic packaging materials
At present, the advanced representative of the aseptic packaging of metal cans in the world is the Dole aseptic filling and irrigating system in the United States. The system adopts a dry heat sterilization method. When the empty tank passes through the sterilization chamber on the conveyor chain, the superheated steam vehicle is sprayed up and down for 45 seconds. At this time, the tank temperature rises to 221-224°C. In addition, the tank cover also uses 287-316°C. Superheated steam sterilizes for 75-90s, these temperatures are sufficient to kill all heat-resistant bacteria. Since all containers and equipment are sterilized with superheated steam, the metal tanks passing through the system have a high degree of sterility, and there is minimal residual air in the headspace of the tank. The quality of the product is safe and reliable.
Glass bottles and glassware packaging technologies are increasingly oriented towards high strength and light weight. At the same time, the thermal shock resistance of glass bottles is greatly improved. Even if the temperature difference between inside and outside is above 800°C, it will not cause cracking, which greatly promotes the Its application in aseptic packaging. The British Dairy Research Institute is one of the early developing units for the aseptic packaging of glass bottles. They use saturated steam to sterilize glass bottles at a temperature of 154°C and for a sterilization time of 1.5 seconds. After sterilization, they are filled with sterilized milk and sealed. Aseptic packaging products.
The application of plastics in aseptic packaging provides a vast space for the development of aseptic packaging. For example, plastics can be made into a bag-type package suitable for milk, soy sauce, vinegar, etc., with excellent heat sealability. This package has a long shelf life without preservatives and without refrigeration. In addition, heat-resistant polyester (PET) bottles have developed rapidly in recent years, especially the application of PET liquid plastic bottle coating technology and plasma technology, so that the permeability of plastic bottles is almost the same as glass, and can withstand high temperature sterilization Processing, which makes its scope of application expanded. Similar plastic aseptic packaging products are not uncommon in our lives.