Application possibility of the hottest green plast

The application possibility of green plastics in food packaging containers

the physical, processability, economy, safety and other performance requirements of green plastics used as food packaging containers are exactly the same as those of ordinary plastics. Polylactic acid has these performance conditions, so there is no need to add new equipment, as long as the existing forming and processing equipment can reach the practical level. As for economy, just like the development history of synthetic resin, through technological innovation and expansion of production scale, production costs can be continuously reduced. It is expected that the price gap with ordinary plastics can be narrowed in the future. At present, the price of green plastic also includes the treatment cost after use (if referring to the situation in Germany, 3 marks per kilogram, about 170 ~ 180 yen), that is, the price of green plastic per kilogram is 300 ~ 400 yen, which is acceptable. As for safety, it must include the safety of the material itself, the safety of the packaging contents during use, and the safety of decomposition intermediates and products during post-treatment, all of which must be taken into account. In the research of Japan's Ministry of trade and industry, a safety evaluation plan has been proposed, which is reflected in the evaluation items of the identification and marking system

for polylactic acid, it is necessary to reduce the cost and meet the necessary requirements and conditions for the above food packaging containers. When green plastics are used as food packaging containers, now European and American countries apply the regulations that usually target resins

in Europe, the hygienic standards related to plastics in contact with food are the European Union decree published in 1990. After years of gradual revision, the transfer test standards and the standards that can also be generally related to monomers have developed a list of additives that are allowed to be used. Green plastics, like ordinary plastics, have a rapidly expanding technical foundation for processing thermoplastic fiber-reinforced composites, and these requirements must be observed

in the United States, the hygiene management of food is carried out on the basis of the federal food, drug and cosmetic law. Specifically, the food and Drug Administration (FDA) of the United States implements and implements management. For food packaging containers processed with newly synthesized resins, the current FDA indirect food additive application regulations apply. While the dissolution test results and toxicity information must be reviewed, recently, special attention has been paid to environmental assessment. Due to different materials, raw materials such as polylactic acid are recognized as safe substances in food additives. Therefore, there has been a precedent for market development of food packaging materials and containers made of polylactic acid that enter the experimental procedure

in Japan, the regulatory system for food containers, packaging and utensils is the food hygiene law. The specific standard is based on the Ministry of health and welfare Circular No. 370, Circular No. 20 of 1982, which has been revised as necessary. On the other hand, the detailed industry independent standards formulated on the licensed import list and sanitary test (composed of material test and dissolution test) are different from those in Europe and the United States, and the production companies undertake equivalent. As a new material, green plastics are recorded as items in the licensed import list, and dissolution test and toxicity test also need to be carried out, which must be reviewed and approved by Juwei Association