Paper and plastics in the hottest food packaging i

  • Detail

Paper and plastics in the food packaging industry

the food industry is the largest user and beneficiary of packaging. The development of food industry is inseparable from packaging. Sometimes, new packaging technology can greatly change the product structure, industrial structure and development process of the food industry. A typical example is the combination of packaged beverages and sterilization processes. The emergence of packaged beverages, the improvement of shelf life, and how to install the tension machine after purchasing have greatly expanded the sales channels of beverages, and created the intensive development of beverage enterprises and the emergence of beverage giants

This is due to the planned large-scale inspection of ethylene cracking plants in Japan

paper and plastic in the food industry

paper and plastic materials are most commonly used in the food industry. Generally speaking, paper bags are the most used in paper packaging, followed by paper cups and paper lunch boxes, and then paper outer packaging. There are many application forms of plastic in food, plastic bags and plastic bottles are the most important packaging forms. As the food industry is too large and complex, only a few major items are cited to analyze the application of paper and plastic


a few years ago, grain packaging was mainly cloth bags with single specifications. With the fine processing of rice noodles and other foods, packaging forms and specifications have also changed greatly. Plastic woven bags have become the main packaging form of rice. Packaging specifications also tend to be miniaturized, ranging from 20 kg to 5 kg or even 2 kg. In some supermarkets, paper bags are used in handheld laser rangefinders because of the small packaging of bulk rice, but plastic packaging is mainly used in general. Large packages of flour are still mainly packaged in cloth bags, while paper bags are widely used in small packages of flour


the packaging of edible oil is completely the world of plastic containers. PET bottles and PE bottles are absolutely dominant in edible oil, and paper packaging is completely useless; Aluminum foil paper is used on the packaging of butter, cheese and other products, but plastic packaging accounts for the majority, which is directly related to the excellent oil resistance of plastic; Most ice cream packages are packed in plastic bags, and some barreled products include cartons and paper cups


sugar paper used to be the only packaging form of candy, but now it has given way to plastic. Candy paper has basically become a collection. Some varieties still stubbornly use paper packaging, but sales have been affected, especially in summer, when soft and sticky sugar sticks to paper, people's appetite disappears. Gum is an exception. Except for the outer packaging, it is basically packaged in paper, but it will still be inconvenient to go out in hot weather

household sugar plastic bags are the preferred packaging. The paper bag has basically disappeared


composite paper packaging greatly extends the shelf life of ultra-high temperature sterilized milk and lays a foundation for the large-scale development of dairy enterprises. Roof style fresh milk packaging is also in its way. However, in cities like Beijing, which are close to large dairy production enterprises, high-temperature sterilized milk packaged in plastic bags also occupies a very important position and is the preferred dairy product for citizens


there are few fresh meat products packaged, and cooked meat products have a large demand for packaging. Paper packaging is basically not used for the packaging of cooked meat products. Plastic, especially composite plastic bags, is the main packaging form of cooked meat products. Only in gift packaging, cartons are used for outer packaging

aquatic products

aquatic products contain a lot of water and usually need to be frozen for storage. Paper packaging is rarely used, and plastic bags are widely used. Foamed plastic boxes are widely used for thermal insulation outer packaging

convenience food

among fast food that belongs to the category of convenience food, paper packaging is more, especially paper lunch boxes and paper cups are widely used; Bagged instant noodles are made entirely of plastic. Foamed plastic has been widely used in instant noodles cups, but with the promulgation and implementation of the national ban, paper cups will have the opportunity to show their talents. However, the rationality of this decree is being questioned by aluminum enterprises to enhance their R & D and design capabilities, and relevant state departments are also reviewing it; Plastic accounts for the majority of biscuit packaging. For individual biscuit varieties, a carton is used outside the plastic bag, and paper materials are less used for packaging directly contacting biscuits; The staple food of fast food is all plastic bags and trays, and there is basically no paper packaging market; Some kinds of snack foods use paper packaging, such as small foods such as melon, but the mainstream packaging is plastic bags

beverages and wine

in addition to the paper composite packaging that can barely be counted as paper packaging, plastic bottles, especially PET bottles, are the most important and eye-catching packaging in the beverage market. In the carbonated beverage, water and beer markets, there is no paper packaging market at all; In the fruit juice market, compared with plastic containers, paper composite containers have a relatively close market share; PET bottles have appeared in the Baijiu market. For example, pet plastic bottles have been used in all Jianzhuang liquor produced by Wuliangye Group. Plastic beer bottles are also under intensive development, and products have been launched in the United States and Europe. Although there are bag in box wine packaging in foreign countries, that is, aluminum-plastic composite bags are used inside and cartons are added outside, it has not appeared in China


cans are a large category of products in the food industry, but their packaging is mainly the market of metal and glass. Although plastic soft cans appear, their proportion is still very limited, and there is no paper packaging


cartons of salt have appeared, and plastic bags are no longer the only packaging material; Plastic bags of soy sauce have also appeared, and plastic barrels of soy sauce and vinegar have broken the dominance of glass bottles. Small packages such as monosodium glutamate and pepper powder are basically the market of plastic bags, and paper packaging is rarely used


in general, plastic is more widely used in food packaging than paper. This is consistent with the material characteristics of paper and plastic itself, especially in the packaging of liquid products. Compared with paper, plastic has incomparable advantages. Although in recent years, the voice of using paper packaging has become increasingly louder, except for fast food boxes, drink cups, instant noodles cups and a small number of shopping bags, "replacing plastic with paper" is basically empty talk, because this formulation itself has great problems

food packaging is a very active field. New products emerge in endlessly, but these improvements have no essential impact on the application proportion of paper and plastic in food packaging. Plastic packaging is mainly to improve the design and provide more convenience; Improve the structure of composite materials to meet more stringent requirements; The new products of paper packaging focus on the improvement of functionality. For example, the United States and Japan have developed paper mats for fruit and vegetable packaging, which can absorb ethylene and carbon dioxide gases released by fruits and vegetables, and developed some products such as heat preservation paper and anti-corrosion paper

get out of the misunderstanding

in recent years, the voice of "replacing plastic with paper" has become increasingly louder. But this claim lacks evidence. People are keen on such a reference, first, because they see a large number of plastic packaging waste around, and second, the media contribute to the flames

who is more environmentally friendly

in fact, any one-time consumption material, if its waste is not properly treated and a reasonable consumption and use system is not established, will cause environmental pollution. Europe is the region that has done the best in environmental protection, but plastic materials are still widely used for food packaging. Their packaging waste disposal rate is very high, and they have taught their children to form the habit of protecting the environment from littering since childhood, instilled the concept of "no waste, garbage is also a resource", and implemented the establishment of classified garbage cans, which is helpful for packaging production enterprises to collect packaging waste recycling and treatment fees and establish recycling and treatment plants. China has not formed a reasonable waste treatment system, nor has it given support to the development and application of plastic waste treatment technology. It is unscientific and not serious to simply think that plastic materials are not as environmentally friendly as paper

in the evaluation of environmental materials, Europeans adopt the method of whole process evaluation, and do not think that paper is more in line with environmental protection requirements than plastic. In terms of resources and energy consumption, plastic is more than 1/2 less than paper; 1//5 less in material consumption; In terms of the degree of water pollution caused by the processing process, 300 plastic bottles are equivalent to a paper can with the same capacity

on the other hand, people think that paper is more environmentally friendly, which mainly means that pure paper is easier to recycle, but in fact, the paper used in food packaging basically needs to be treated separately, or coated or compounded, to achieve the required characteristics. For example, the paper composite container used for high-temperature sterilization is a 7-layer composite product of paper, plastic and aluminum foil. Can this kind of thing be called paper? Waste composite containers cannot be decomposed and reused at all, but can only be incinerated. Compared with pet, which can also be used for fruit juice packaging, the latter can be completely recycled and reused

reduce misleading

people's understanding of whether materials are environmentally friendly is mostly derived from media reports. Unfortunately, many Chinese media are keen on the hype of hearsay, and the voices of experts are often drowned out

for example, foreign countries restrict the use of PVC as packaging materials because PCV waste will produce harmful gases when burned, but the news came to China and evolved into PVC materials toxic; Foreign countries restrict the use of foamed plastics, mainly prohibiting the use of the foaming agent freon, which will destroy the ozone layer, but in China, it has become a banned foamed plastics; What's more, a packaging newspaper reported that "due to the increasing lack of wood resources and the need of environmental protection, some foreign manufacturers began to produce paper furniture and thought it was promising..." I really don't understand what his paper was made of. Obviously, straw is not good. Only wood pulp paper with good wood can have such strength! How can furniture made of paper that wastes energy and causes pollution be more environmentally friendly than furniture made of wood

paper and plastic will coexist in food packaging for a long time. Media reports should also be more professional, and do not mislead the public because of their linguistic hegemony

Copyright © 2011 JIN SHI