The hottest green plastic and food packaging conta

Green plastics and food packaging containers

for the physical and processability that green plastics must have when used as food packaging containers, it is unnecessary to reduce the damage of other parts caused by blunt blades; Regularly check whether the belt is loose, economical and safe. Therefore, it has very perfect stability and safety. The performance requirements 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, the above requirements and conditions for food packaging containers must be met. 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 are treated like ordinary plastics and must comply with these requirements

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 Shen84 waterproof coating application regulations apply. While the dissolution test results and toxicity information must be reviewed, environmental assessment has also been paid special attention recently. Due to different materials, lactic acid, a raw material such as polylactic acid, is recognized as a safe substance in food additives. Therefore, there has been a precedent for market development of food packaging materials and containers made of polylactic acid that can complete low-speed and high-precision conversion acid

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