The hottest foreign experts talk about high barrie

Foreign experts talk about high barrier flexible packaging

since the 1990s, the application of high barrier flexible packaging in the retail food market has expanded significantly. Now many plastic companies and packaging material companies are concentrating on studying high barrier flexible packaging with different materials such as plastic film, paper and metal foil as the base film. High barrier flexible packaging has penetrated into every corner of the packaging. To this end, we invited American flexible packaging experts to talk about their views on the historical reasons, current situation and future trends of flexible packaging --

Mr. jdwivedi

(Senior Consultant of American Kline & Co consulting company)

the high barrier flexible packaging industry has been formed for at least 20 years, and the earliest company has been involved in this market since the 1970s. In terms of barrier flexible packaging, polyolefin composite adhesives are used to bond different polymers to form a multilayer structure, and these materials have been developed and used as early as 1976

meat packaging is the first place for people to "go to war". As soon as barrier flexible packaging technology has been developed and improved in this field, other parts, such as fast food, cheese and candy industries, have begun to adopt some of the same technologies to attract consumers, especially in the new fast food field with nutritional awareness

with the reduction of fat content in food, I also visited several neighbors of our experimental machine factory, and the fragrance preservation function became relatively poor. Low fat and fat free foods force film producers to provide flexible packaging to maintain food flavor for a long time

Mr. markfoot

(vice president of packagingpartners packaging company in the United States)

high barrier flexible packaging came into being when metal foil materials were really applied. At that time, many companies began to adopt polyethylene coextrusion process, and then made composite films

active packaging is also the development trend of plastic film packaging, although from a technical point of view, active or "variable" packaging does not belong to high barrier applications

however, active packaging has begun to be applied to agricultural products, which is currently the fastest-growing field in the flexible packaging industry

Mr. richknor

(senior research expert of equistar company)

in the North American market, pet food packaging is increasingly using high barrier films. Now when people walk into supermarkets or pet stores, they can see such packaged cat food and dog food. I call them "perforated game board" prizes. When you pay, you will see them hanging somewhere near the cash register

Mr. danward

(research expert of American equistar composites company):

economy supports the development and innovation of high barrier market. Production cost is the real driving force, and light packaging itself is also a factor

as composite packaging is replacing metal cans, glass or hard packaging, people need high barrier flexible packaging materials and co extrusion composite packaging. Over the years, the production equipment of high barrier film has been transformed and updated. The processing plant plays an important role in the development and progress of the equipment. The innovative solution developed by Solvay experts can increase the number of gears to 8. The real driving force for the emergence of CO extruded film products is the packaging processing plant. In order to improve their equipment for the production of coextrusion blown film and coextrusion cast film, many companies, including food companies, have also carried out equipment transformation today in order to produce their film packaged food to adapt to the influx of high barrier flexible packaging

the coextrusion technology in North America is far ahead of that in other parts of the world. The pioneering progress of coextrusion technology basically comes from some companies in the United States. The latest market shows that the refrigerator bushing also adopts high barrier flexible packaging to prevent the overflow of freon and other things

(equistar research expert)

defines high barrier flexible packaging materials as: any material that can prevent the invasion of another substance (whether gas or fragrance). The high barrier materials used today usually belong to oxygen barrier materials, among which EVOH and nylon resin are the most commonly used. They are used together with polyethylene, which has waterproof or moisture-proof effect

the definition of active packaging or "variable" packaging is: do not try to empty the gas in the packaging, but change the gas in the packaging. This kind of package contains the so-called deoxidizer. By putting different substances into the package, the reserved gap inside can be absorbed and eliminated. This is indeed very popular in Japan, and will become another evolution of packaging. It not only prevents gas from entering the package, but also really changes the internal condition or atmosphere of the package

Mr. garrettgee

(packaging business manager of Kline & Co consulting company in the United States)

it was consumer demand that initially pushed barrier films to the forefront of the packaging market. Cost is also a driving force for the development of high barrier films, and the number one driving force is to let consumers get as fresh food as possible. In order to make the products reach the most suitable use value, consumers certainly don't want to use a kind of film bag with too much attention and too many functions to package food. It is the best choice to use the film material with the most appropriate performance and the lowest cost

flexible packaging technology experienced two biggest leaps from 1992 to 1996 and from 1996 to today. In the early 1990s, there were basically four kinds of flexible packaging materials: nylon, PVDC (polyvinylidene chloride), EVOH (ethylene vinyl alcohol copolymer resin) and metallized composite film. However, consumers demanded fresh and delicious food with better quality covered with special interface mortar, which prompted the packaging industry to develop more advanced packaging solutions

today, consumers can enjoy food protected by up to 15 layers of composite film. Polypropylene and polyester are often used as the base film of high barrier composite film. The base film is compounded into multilayer film, and there are different manufacturing processes and technologies. The skill of selection is to weigh the comprehensive proportion between cost and performance. Many companies choose coextrusion process, some choose multi-layer bonding, while others use coating method, which largely depends on the end use. For example, if a packaging material processing plant that promotes production, trade, steel blending and development only needs films with general barrier properties, they may use polyethylene as the base film and coated with PVDC or EVOH. This is a very economical and effective method

the structural composition of packaging is related to many factors: the number of rolls to be compounded, the length of each roll, the physical properties that must be achieved, whether the final packaging adopts longitudinal forming filling or cold sealing, whether zippers are intended to be installed on the packaging bags, and so on

today, high-quality barrier films or high barrier flexible packaging are prominently used in the retail food market. Compared with the United States, Europe and Japan are more likely to accept high barrier packaging. Consumers in Western Europe and Japan have a much stronger preference and appreciation for high-quality food, and consuming food is to a large extent a social activity. In North America, food consumption pays more attention to "I need fast, I want hot, I want fresh"

current market situation: other fields using high barrier flexible packaging include medical devices, drugs and tobacco, but the application of this packaging form in the North American tobacco market is significantly reduced

the pet food packaging market is developing rapidly. One of the main reasons for the application of barrier flexible packaging in this field is to prevent infection. Many barrier flexible packaging forms have high barrier properties of metal foil and metallized film, and they are now equipped with resealable zippers

today, there have been great changes in this field. Now we can see garden lawn appliances with soft packaging or high barrier soft packaging, dry mixtures and salt containers used for deicing. (Hui Ying)