List of novel packaging materials

Polyester

At present, 77% of global bottle polyester resins are used for food packaging, and non-food packaging accounts for only 23%. Food packaging is mainly carbonated beverage bottles, accounting for about 50% of the total. 21% of Other beverages are packaged, and about 6% are consumed in edible oils and salads. In the past five years, the annual growth rate of polyester bottles reached 18%. With the improvement of people's living standards, the demand for packaging materials is also increasing, and polyester packaging containers just meet this requirement. Especially in beverage packaging, PET bottles have gradually replaced PVC bottles, tin cans, and aluminum cans with their excellent performance.

2. PVC

In recent years, with the improvement of people's living standards, various convenient, health care, medical, and flavor foods have become the development direction of the food industry. In order to adapt to the market's development, we must produce more high-barrier single membranes and composite membranes to meet the requirements of various steamed food packaging and aseptic food packaging. Grain anti-mold and insect-proof packaging, fresh-keeping packaging for cakes, preservation of vegetables and fruits, long-term frozen food packaging, microwave food packaging are all huge markets for PVC packaging materials.

3. CT

The world's oldest qualified plastic food container development expert, Japan's Central Chemical Corporation, announced that after ten years of hard work, they have successfully developed a plastic for food packaging containers that meets the principles of environmental protection—CT. The surface of the vessel made of CT plastic is not much different from other food packaging containers, but the internal quality is greatly changed. According to experts, this kind of plastic is filled with about half of the amount of talc powder produced in Liaoning Province of China from polypropylene plastics and blended to make new composite materials. CT is not only resistant to high temperatures, but also has one of the most outstanding advantages, that is, its function is similar to the PSP plastic product commonly called "foam plastic", and its volume is only equivalent to 1/4 of the latter. In this way, many troubles caused by the bulkiness are avoided during recovery, and extremely favorable conditions are created to eliminate the negative impact on the environment. Japan's Central Chemical Corporation believes that CT will be a more suitable plastic packaging container based on the Chinese food culture, which is dominated by oil, hot food, and heavy color; and CT is expected to make it difficult for China's "white pollution". This situation has been alleviated to some extent.

4. Sterilized absorbent food bags

The Russian Institute of Applied Biotechnology has recently developed a food packaging bag that can absorb water, sterilize, and can be reused many times, allowing foods, such as cheese and sausages, to be preserved for a long time. Russian experts added dehydrated mineral salts and enzymes to polymers in food packaging materials. The inner surface of the packaging bag rich in these substances can absorb excess moisture and kill bacteria, thus improving the internal environment of the packaging bag. The enzyme in the additive also regulates the odor of the food and creates a living space for nutrients in the food. In order to make the new type of bags available for repeated use, researchers have also researched that the bags can be reused nine times in a specific process, thereby reducing the packaging cost and reducing the production cost.

5. Straw container

Disposable straw catering containers are made of pure natural plant fibers such as abandoned crop stalks, added safe and non-toxic molding agents that meet the hygienic standards of food packaging materials, and can be completely degradable green environmental protection products manufactured by unique processes and molding methods. The product is oil-resistant, heat-resistant, acid-alkali-resistant, and freeze-resistant. The strength is better than foam plastic and paper cutlery. The price is much lower than paper cutlery. This project not only eliminates white pollution, but also provides an effective way for the comprehensive utilization of straw.

6. Detective film

The latest development of a special film that can detect bacteria, that is, a special coating on the surface of ordinary food Packaging Film, so that it has the special function of detecting bacteria. For example, in the case of the biofilm used in raw and cooked meat packaging, if the packaged meat is not fresh and the harmful bacteria content exceeds the food hygiene standards, packaging with this film will make the original transparent and colorless film become a warning. Color, so that customers immediately know they can no longer eat.

7. Corn plastic

Not long ago, American researchers developed a corn plastic packaging material that was easily decomposed. It is made of corn starch mixed with polyethylene. This plastic is suitable for the production of food packaging integrated packaging bags. The bag can be quickly dissolved in water, which can avoid the contact of pollution sources and bacteria.

8. Canola plastic

A rapeseed plastic packaging material was recently developed by the United Kingdom. It extracts three kinds of genes that can produce plastics from the bacteria that make biopolymers, and then transfers them to the rapeseed plants. After a period of time, it produces a plastic polymer liquid that can be obtained after being refined. Seed plastic. The packaging material or snack food packaging material made of this plastic can be decomposed on its own without any contaminated residue.

9. Wheat plastic

This is the use of wheat flour added glycerin, glycol, polysilicone, etc., mixed and dried, and then heated to 150 kg per square meter pressure to become translucent thermoplastic plastic film, the advantage of using wheat plastic packaging food can be decomposed by microorganisms .

10. Wood flour plastic

Recently, Japanese scientists and technicians researched and developed a wood-foil plastic packaging material from pine wood, and produced polyurethane by removing polyhydric alcohol from wood flour and then reacting with isocyanate. This wood powdered plastic is extremely heat resistant and can be biodegraded and can be used to make temperature-resistant packaging bags.

11. Bacterial plastic

British researchers recently developed a PHB bacterial plastic. It uses sugar to grow a kind of bacteria, and then it is processed to make it similar to polypropylene. This material is non-toxic and easy to biodegrade. It is an ideal material for processing food packaging bags. At the same time, there is no pollution to the environment after abandonment.