Future analysis of the hottest food packaging

2022-07-29
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Future analysis of food packaging

Abstract: from the perspective of changing consumer demand, based on the development of modern food packaging technology, this paper discusses in detail the development trend of food packaging in this century, including packaging materials, packaging technology, transportation packaging and electronic information combination packaging. Food packaging is developing in the direction of more convenient for customers, improving food quality and ensuring food safety, so as to better meet people's health needs

key words: food packaging packaging materials packaging technology transportation packaging 1. Introduction

we can predict the development of food packaging in this century from the current situation of food packaging, including people's living habits, eating habits, social and economic development, advanced packaging technology and food processing technology, sales of packaged food, etc. Modern food packaging not only meets the basic requirements of packaging, but also ensures the high quality and safety of food. The future development of food packaging includes the development and improvement of food packaging system, packaging materials and sales channels. The food packaging system will integrate a variety of active packaging technologies to meet the requirements of food packaging, sales, consumers and the environment. The development of new packaging materials mainly focuses on renewable and degradable materials, improving the barrier performance of packaging containers and film materials, and developing new active materials, with the focus on active packaging materials. At present, many researchers are committed to studying active packaging materials to make them have antibacterial activity. In the process of storage and sales, this material can release antibacterial agents to inhibit the growth of microorganisms in food. Food sales channels mainly include retail, intelligent sales and e-commerce sales

II. Changes in consumer demand

in the 1950s, customers were very happy to buy food in grocery stores or market markets. With the intensification of business competition, customers begin to take the initiative in food packaging. In developed countries, hundreds of goods have disappeared from the shelves due to the mistakes of market research

the emergence of supermarkets gives people more choices. In the early 1990s, the fast food industry appeared instead of family dining (Japan already appeared 20 years ago). It is reported that at the beginning of this century, American family cooking food will no longer start with basic ingredients, and the same is true in Japan and some European countries. People can buy semi processed or processed food, which can be eaten at home after a little processing, which is convenient and fast. This requires packaging to ensure the quality and safety of food and meet the needs of people's health

in many developed countries, customers have a new demand, that is, what we call "smart shopping", which can order food directly at home. Customers can order through their home computers, watch the products, and find all the information about the products (first started in Germany). Experts believe that in the near future, retail stores and intelligent stores will maintain rapid development, and each channel has put forward corresponding packaging requirements

1. retail stores

are suitable for simple, cheap and light food packaging. This is because the shelf life of the food sold in this way is often short, ranging from a few hours to two days, without infringing or affecting the service performance of the inspected object. These foods are often fresh or slightly processed, and the latter have safety instructions. The packaging is in the form of tray, cup or box, and is made of foamed plastic, cardboard or aluminum foil, which are easy to recycle

2. intelligent sales

in view of the food supply through this channel, food packaging is required to not only have the basic protection function, but also have the following points: considering the interests of customers, there should be clear signs to facilitate customers to understand the relevant information of food; From the perspective of retailers, it is necessary to improve the image quality of packaging and better show packaged food to consumers; From the point of view of the seller, the packaging volume shall be minimized, the traceability shall be provided, and the order shall be standardized; From the perspective of food processors, food should be clearly identified to provide retailers, sellers and customers with food related information; In terms of packaging containers, special packaging containers are used for convenient transmission. The selected packaging containers are required to have the advantages of low cost, high strength, recyclability, easy processing and cleaning. At the same time, special designs are made for different food packaging, such as frozen food. The packaging is required to be suitable for frozen occasions. In addition, the packaging strength should be improved, and the ordering system should be standardized. This kind of shopping method is just the need of efficient and fast food supply chain. Orders are no longer from various retail stores, but directly from the distribution center, shortening the intermediate link

3. e-shopping

smart store is a form of e-shopping. Another form of shopping channel has emerged in the UK, which aims to facilitate customers and will develop rapidly in the future. A microcomputer processor with a scanner is installed on the cart in the supermarket, which can scan the price of each item selected by the customer, and then calculate the total value. For customers, this is a new type of service. Customers use credit cards when shopping in supermarkets, and do not need to pay in cash. This method uses more complex integrated chips. When customers choose a commodity, they can read or even listen to some information about the commodity, verify its storage, and then decide to buy. He can even scan the information of all products of this series of commodities, record it on the microcomputer chip, and display the comparison information of commodities on the display through some simple operations

III. Development of food packaging technology

according to the change of customer demand and the development of industry, we can foresee the future development trend of new food packaging technology. The development of packaging technology is no longer like that from the 1970s to the early 1990s, and there will be fundamental changes. The focus of packaging technology development includes packaging materials, packaging technology (related to new food processing technology), transportation packaging and electronic information combination devices

1. packaging materials

high barrier packaging materials in this century, high barrier packaging materials will develop rapidly, especially the barrier packaging materials based on plastics, including flexibility and rigidity. The development of new high barrier packaging materials often focuses on improving the existing barrier properties through material modification, rather than inventing new resins

biodegradable plastics will be further studied to produce polymer materials from natural materials such as plant fibers and crops. This material has biodegradable properties, and will have good comprehensive properties through coating and appropriate treatment. At present, this type of polymer material has appeared in Europe and the United States. After long-term research in many countries, glass packaging materials will become cheaper, recyclable, thinner, lightweight and have very good strength characteristics. The manufacturing process includes melting the components, extruding them into thin films or tubes, or using mechanical or pneumatic devices to make containers of multi-layer coextruded glass materials like thermoplastics

modified atmosphere packaging materials use films with gas selective permeability as modified atmosphere packaging to package fresh food. It will stimulate the demand for extruded products such as plastic pipes and wall panels. At present, modified atmosphere packaging is still in the initial stage of development. The working principle of modified atmosphere packaging is to adjust the atmosphere in the packaging by using the selective permeability of porous film to gas. The side chain of this film can crystallize alone, which is not related to the main chain. The melting point of the polymer changes with the length of the side chain. Once the melting transition temperature is reduced, the side chain forms a crystalline structure, which has a barrier property to the gas. When it reaches the thermal transition temperature, the side chain can melt immediately and become a porous structure, so it has very good gas permeability. This transformation process is only a physical change, not a chemical change, so the process is reversible. This physical change process can compensate for the respiration of the food in the package. The change range of temperature is between 5 ℃ and 12 ℃, which can maintain the same permeability of carbon dioxide/oxygen

non wood fiber paper packaging materials non wood fiber paper making technology will develop rapidly, mainly because cardboard and carton occupy a large proportion in packaging, about 40%. In developing countries, wood resources are scarce, so other resources should be used to produce cardboard or cartons. There are about one million tons of non wood fiber resources in the world every year. People think they are the best substitute for wood fiber. At present, the technology of non wood fiber papermaking has been developed to a certain extent. Potato starch and limestone can be used to produce recyclable or biodegradable food packaging trays for retail stores at a low price

2. packaging technology

packaging technology will be more perfect, some of which are developed on the current basis, and these are often related to new food processing technology

active packaging has appeared in some countries and will be further developed in this century. For example, Japan's "zeomic", a new type of plastic with antibacterial function, is added with ceramic materials with antibacterial function, which can convert oxygen in the external environment into active oxygen and penetrate into the packaging, damaging the enzymes of microorganisms in food. At present, this process is only used in aseptic packaging system and has the function of self sterilization. In the future, this kind of plastic can also be used to kill the bacteria that pack food

deoxidizing packaging uses deoxidizing agent and other active agents in packaging materials in the active packaging, which can absorb the strange flavor in the packaging, maintain the original flavor of the food, and prevent the food from being damaged by other factors except oxygen

food irradiation technology has been studied intensively. It has been proved that food irradiation technology is a safe processing technology and will be widely used. Irradiation can destroy most harmful bacteria and parasites in food without affecting the quality of food. There is no need to keep the vitamins and other nutrients in food by canning, making it dry or freezing. In addition, the irradiation technology is suitable for general packaging materials, which is very conducive to the promotion of the tensile testing machine for the gold tested metal coating

pulsed strong light treatment technology this technology will not affect the quality of food. Pulsed light is a very short pulse of high-intensity white light, which can kill microorganisms on the surface of food. The high-intensity white light is similar to sunlight, but it is only reflected at the speed of a fraction of a second. It is stronger than sunlight and can quickly kill bacteria. Under the strong pulsed light, the microorganism has obvious lethal effect and can be used for thorough sterilization. Different light intensity and time should be controlled for different foods and different strains during operation. This technology has been improved. It can not only be used for the treatment of some food in retail stores, but also use cheap packaging materials

there have been some technologies for easy opening packaging, which are low-cost but not very effective. In the next few years, this technology will be applied to every type of packaging. Customers will not buy food whose packaging is inconvenient to open. The laser opening technology has been further improved. By controlling the laser intensity and the released energy, it is very convenient to open the cardboard box

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