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New green packaging material polylactic acid
Source: | Author:xinxinghuanbao | Published time: 2018-05-24 | 1845 Views | Share:
Polylactic acid (PLA) is a new polyester material produced from organic acid lactic acid. As an important raw material, the PLA can be like polyvinyl chloride, polypropylene, polystyrene and other thermoplastics as processing into a variety of downstream products, such as production into film, packaging bags, boxes, food containers, the disposable fast-food containers, beverage bottle, doing drugs slow-release agent of low molecular packing such as poly (lactic acid) (PLA).

PLA has good mechanical and physical properties and is suitable for various processing methods such as blow molding and thermoplastic. The PLA also has the characteristics of moisture resistance, good grease resistance and strong tightness.

Since lactic acid, the basic material of PLA, is one of the inherent physiological substances of human body, it is harmless to human body. PLA performance is stable at room temperature, but the temperature is higher than 55 ℃ or oxygen enrichment and automatically decompose under the action of microorganisms. The packaging materials produced with PLA can be completely degraded by the microorganisms in nature after use, and eventually generate carbon dioxide and water, without pollution to the environment.

Europe, America, and Japan have developed a variety of PLA as the raw material of packaging materials, such as Farm brand candy made of PLA material packaging film, natural appearance and performance is the same as the traditional candy packaging film, has excellent crystalline transparency, kink properties, can be printed and strength, and high barrier property and better able to keep the smell of candy. The Danish Faerch plastic company USES the PLA as a packaging material and can be used to pack various pasta, meat and salads. Using PLA as raw material, a German company has successfully developed a green food cup with the function of rapid natural decomposition, which has solved the problem of degradation of one-time plastic packaging in the past. Carkildo polymer is the world's largest corn - based PLA manufacturer. Panasonic battery industries of Japan has teamed up with mitsubishi resins to replace the packaging material for a dry battery with the PLA.

The PLA has become a new star in the field of environment-friendly packaging materials precisely because it is harmless to human body and pollution-free to the environment.