With the development of human society, the demand for plastic products in People’s Daily life is increasing, such as plastic bags, plastic trays, plastic lunch boxes and so on. Meanwhile, the rise of the food delivery industry has increased the demand for plastic products. The demand is also having a huge impact on our environment, because plastic products are very harmful to the environment.
In the face of increasingly severe environmental problems, seeking alternatives to plastic has become a worldwide trend. After continuous research and improvement, PLA products have gradually stepped onto the stage of history. PLA products have the function of degradation, which can be completely degraded within 90 days at appropriate temperature and environment. At the same time, it also has a long service life, properly preserved, PLA tray and PLA container and other products can be stored for more than one year.
New environmentally Friendly PLA Material Biodegradable Trays and Containers for Packing Fruit Meat Food
Poly (lactic acid) has good thermal stability, processing temperature 170 ~ 230℃, good solvent resistance, can be processed in a variety of ways, such as extrusion, spinning, biaxial stretching, injection blow molding. In addition to being biodegradable, polylactic acid products have good biocompatibility, gloss, transparency, hand feel and heat resistance.
Polylactic acid (PLA) is a novel biodegradable material made from starch derived from renewable plant resources such as maize. Glucose was obtained from starch by saccharification, and then lactic acid with high purity was fermented from glucose and certain strains, and then polylactic acid with certain molecular weight was synthesized by chemical synthesis. It has good biodegradability, and can be completely degraded by microorganisms in nature after use, and eventually generate carbon dioxide and water. It does not pollute the environment, which is very beneficial to the protection of the environment, and is recognized as environmentally friendly material. The common plastic treatment method is still incineration, resulting in a large number of greenhouse gas discharged into the air, while the POLylactic acid plastic is buried in the soil degradation, the carbon dioxide directly into the soil organic matter or absorbed by plants, will not be discharged into the air, will not cause the greenhouse effect.
Poly (lactic acid) has a unique advantage in the field of disposable utensils, food packaging materials and other disposable products because it is absolutely harmless to human body. It can be fully biodegradable and meet the high requirements of the world, especially the European Union, the United States and Japan for environmental protection. In addition, after technological development, the market has been modified by PLA materials, which can effectively overcome the shortcomings of the original particle, and some even heat resistant temperature up to 120℃, can be used as microwave oven utensils materials.
However, in terms of the current market, the thermal insulation and freshness ability of PLA products are unmatched by other degradable products, but the price of PLA products is higher than other degradable products. Many people choose bagasse as a biodegradable product, but bagasse absorbs oil, absorbs water, and affects packaged products. Also bagasse pallets can become moldy if they are not dry enough
Post time: Jan-12-2022