Newly developed food packaging paper

Foods are heavily used in plastic packaging and plastic waste is difficult to handle because plastics are extremely difficult to degrade naturally. Therefore, some developed countries have partially restricted the use of plastic packaging. For this reason, the development of food packaging paper has become the consensus of the industry. According to the different angles of food packaging papers, new food packaging papers can be initially divided into the following categories. This is an important achievement made by countries in the world since the beginning of 2003.

First, waterproof

Dehydrated wrapping paper

This kind of packaging paper, called P and S, has a semi-permeable membrane that can only pass through water as the surface material, and a high-permeable pressure material and a polymer water-absorbing agent on the inside. The wrapper does not damage the cells of the food tissue, but also inhibits the activity of the enzyme, prevents the decomposition of the protein, reduces the proliferation of microorganisms, and achieves the effect of maintaining the freshness of the food, concentrating the umami component, and improving the toughness.

2. Absorbent functional paper

The biggest feature of absorbent functional paper is its strong ability to absorb water. It can maintain the water absorption capacity of the material 10 times its weight, and it is safe and harmless. There is a significant difference between the water absorption capacity and the water retention capacity of the absorbent functional paper and the non-woven fabric, and the absorbent functional paper is obviously excellent. This is because non-woven fabrics can only retain moisture in the pores between the fibers of the raw material, while the water-absorbing functional paper not only has the above capabilities, but also the fibers themselves can absorb water. When the absorbent paper absorbs water, it becomes very soft. Due to the above properties, the water absorbing functional paper can be used as a film (sheet) for absorbing condensation such as ham and sausage, a film (sheet) for absorbing fresh food drip, and a thin film for cosmetics and sanitary materials.

3 acid-free waterproof archives

The new type of waterproof packaging paper and paperboard (without acid and water proof archival paper) independently developed by Hunan Changde Cigarette Factory Jin Furong (Special) Paper Co., Ltd. has successfully filled the gaps in the country. The company has started projects since 1996 and has invested 3.15 million yuan to develop new waterproof packaging paper. According to relevant experts, the scope of application of new waterproof packaging paper and board is very wide.

4 screen wet cardboard

Libery/Mining Paper Co., Ltd. of Minnesota, USA, has developed M-Guard screen wet cardboard, which resembles corrugated paperboard. It is also similar to the commonly used inner liner, which is printable, recyclable, and regrind. The board's screen wet performance has a visual effect. This screen wet performance is due to the effect of internal chemical bonding properties in the process of making paperboard, saving time without any conversion. The board achieves good screen wet performance through its inherent absorption.

5. Water resistant paper

Water-resistant paper has good water resistance and air permeability because it does not have water repellency. Therefore, the soaking rate is higher than that of other materials. The surface yarns have high surface yarns and interlaminar strength, antibacterial properties, and ammonia absorption. These characteristics are not obtained by adding resins and chemicals, but rely on raw materials for the pulp and are therefore safe and harmless. Since MWS has the above features, it can be expected to be applied to food packaging materials, dew condensation absorbent films (sheets) and other fields. At present, MWS has been applied to the vacuum packaging of wine trough foods, and it is compounded with other materials. As a wrapper for multi-moisture semi-finished foods, MWS gives full play to its advantages of mildew proof, water absorption and water resistance.

Second, thermal energy

Protein coated wrapping paper

A Japanese food company has also developed a protein-coated wrapper, which is a wrapper made by dissolving the protein in a special process. The protein-coated wrapping paper film made of protein as a coating on the paper can withstand a certain temperature, prevent water erosion, non-toxic, convenient for food processing, and does not pollute the environment.

2. Solar energy converted to thermal energy paper

The United States has developed a paper that converts solar energy into heat, which can function as a solar collector. Use this type of insulation paper to package foods and place them in a place exposed to sunlight. The food in the package will be heated. Only when the package is opened, the heat can be dissipated.

3. Heat sealable wrapping paper

Heat-sealing packaging paper has heat-sealing property, air permeability, and has the characteristics of oil resistance, water resistance, safety and harmlessness. In order to make the package heat-sealable, the surface of the heat-sealable resin must be covered with a coating or adhered with polyethylene to make it heat-sealable. No secondary processing is required to obtain air permeability. Its ventilation can be based on user requirements. control. The food contained in this breathable wrapper can be heated by electron waves, and there is no steam in the package, which can keep the food surface fresh. Because of its characteristics, the heat-sealable wrapper can be expected as a packaging material for frozen food heated by electron waves, which has been used for hamburgers.

4. Insulation wrapping paper

The function that this kind of paper should have is to maintain the freshness, freshness, and freshness of the cooked food after it is packaged, so that people can eat it conveniently at different venues and times to meet the fast-paced needs of people today. The principle of this insulation paper is to convert light energy into heat like a solar collector. Usually, people only need to put this special paper on the place where the sun can shine, the space surrounded by the paper will be continuously replenished with heat, so that the food in the paper will maintain a certain degree of heat, so that people can eat it at any time. Food.

Third, fruit and vegetables

1. Fruit residue paper

Japan's Takasaki Paper Co., Ltd. uses fruit pomace discarded from the food industry to produce pomace paper. The method is simple, and the grains in the pomace are removed and pulverized into pulp. After the appropriate amount of wood fiber is added, the pomace paper can be used. Easy to decompose, can be burned or composted, recycled paper can also be recycled, and it is not easy to pollute the environment.

2. Okara paper

A Japanese research institute, using new technology, uses bean dregs as a raw material to produce a kind of wrapper that can be eaten with heat and has certain nutritional value. The package is suitable for the packaging of instant noodles seasoning and can be eaten together when eaten.

3. Carrot wrapping paper

The carrot paper developed in the UK uses carrots as a base material, adding appropriate thickeners and plasticizers, making use of the natural color of carrots to produce inexpensive, pleasing edible colored vegetable paper. This product can be used as an individual (inner) package of boxed foods or eaten directly as a convenience food, which can not only reduce environmental pollution, but also increase the beauty of food, and increase consumers' food interest and appetite. Carrot paper is an edible color paper, with strong flexibility and a certain degree of waterproof, with packaging and eating functions. If we can further improve the strength and plasticity, improve the texture of the surface, and make products with various shapes (boxes, bowls, etc.), we can further expand its use, better protect the environment, and provide new ways for deep processing of vegetables.

IV. Anti-metamorphism

1. One company introduced a type of anti-corrosion paper that can be used for food packaging

It is produced by immersing the base paper in an ethanol solution of 20% succinic acid, 33% sodium succinate and 0.07% sorbic acid in acetic acid, and then drying it. Foods with marinade using this paper can be stored at 38°C for 3 weeks without deterioration.

2. Long-term anti-mildew paper

A new type of wrapping paper produced by a company in Japan that can prevent food moldy and spoilage for a long time and does not damage the flavor of food. The paper is an aqueous solution in which a special monoglyceride is fused with a compound therein, dissolved as an effective component in water and ethanol, and then sprayed or infiltrated on paper and finally heated and dried. It can be used to package a variety of foods.

3. Fruit fresh paper

In order to maintain the freshness of fruit, Singapore developed and produced a fresh-keeping wrapping paper that has antibacterial and bactericidal properties. The apple was stored on this type of paper and opened after six months. The fruit was still full. Another fresh-keeping paper can keep fresh citrus for 3 months, and litchi can also keep fresh for more than 30 days.

Fifth, environmental protection

1. Environmental protection paper roll

A British company developed and developed an environmentally friendly paper roll that can replace foam plastic packaging materials. There are many small nicks on the top and occupy less space. When the paper roll is pulled open, it becomes a three-dimensional peak and the volume is 10 times the original. It can act as a cushion cushion and is suitable for filling and holding packaged goods. The paper roll is made from recycled fiber and can be recycled for reuse; when it is discarded, it can be biodegraded.

2. PLMEX food packaging paper

There is also a brand new PLMEX food packaging paper on the European and American markets. It is 100% pure pulp, contains no fluorescent agents and chemical substances harmful to the human body. It is waterproof, oil-repellent, anti-stick, and heat-resistant (up to 200°C to 250°C. °C high temperature) features. It is easy to use, easy to clean, safe and sanitary, and meets the FDA and German BGA food hygiene standards. This food special paper can be recycled after cleansing with clean water after use, and can be used repeatedly 50 times. This type of food paper is rolled and pressed into various paper shapes. Whether used for steaming, baking, or microwave heating, it will not be distorted and faded.

Sixth, other

Artificial peel

A type of artificial peel paper that can be recycled has been favored after its introduction in foreign markets. This artificial peel paper is made of special materials, it is completed on the factory's automatic line together with the production of food. It is a strict PRODUCT INTRODUCTION product field transparent pouch or transparent shaped ring, which is tough and flexible. The shelf life of foods can be prolonged, and peeling of artificial peels is just enough to eat.

2. Paper cans

At present, the annual consumption of aluminum cans in China is 6 to 7 billion, raw materials are imported in large amounts, and the price is expensive. Together with environmental pollution and other factors, the country is no longer building new aluminum cans production lines. The ability to find new packaging containers that replace aluminum cans has become a constant concern in the industry. The birth of paper cans overcomes the drawbacks of aluminum cans and has broad prospects for development. The construction of an aluminum easy can production line requires at least 17 million yuan, while the paper can production line only needs 2 million yuan; the minimum batch of aluminum cans is 20 million, and the economic volume of paper cans is more than 20,000. Paper cans can be used in paint, chemical, food, medicine and other packaging, but also used to produce paper boxes, paper cups, paper drums and other products. Experts estimate that the annual demand for paper cans in China will gradually reach 15 billion, and its outstanding characteristics will inject new vitality into Chinese packaging.

3. Acrylic synthetic paper

Japanese experts made a synthetic paper using propylene from petroleum gas as raw material. This paper is strong, not easy to break, has a smooth surface, no wrinkles, no moisture, and no discoloration. This kind of paper is lighter than ordinary paper and is not easily stained with dirt. It is a good material for printing, writing and food packaging.

Foam paper

The German company PSP has developed a new process for the production of foamed paper. The packaging materials produced with it can replace foamed plastics. The foam paper uses old books scrap paper and flour as raw materials. The old newspapers are first cut into shreds, then ground into fibrous pulp, and mixed with flour in a ratio of 2-1. The mixed pulp stock Injected extruded cylindrical particles. During the extrusion process, the raw material is subjected to steam as a foam paper. Using this type of foamed paper pellet as raw material, various shapes of plastic packaging can be produced according to different needs. Foam paper can be molded once, without chemical additives, and can be recycled after use.

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