Currently, the hardware (technical methods, devices) systems and software (regulations, standards, systems) systems for waste recycling, treatment and regeneration are relatively weak. In the urban garbage, various packaging wastes account for about 30% to 40%, and plastic packaging wastes account for about 4% to 5% (among which pulp molding machinery accounts for a large proportion), which continues to grow at a rate of 10% every year . According to the current level of pulp molding machinery technology, the comprehensive cost of direct and indirect treatment (including recycling, landfill, incineration, and regeneration) of one ton of plastic waste is more than 10 times the original value. Therefore, the phenomenon of “white pollution” in the environment continues, and major cities are facing increasing pressure on environmental management.

In view of the large transportation volume of styrofoam gaskets, the difficulty of natural degradation of waste, the generation of environmentally harmful gases in incineration, and the high cost of resource recovery and regeneration, in recent years, relevant international conventions and trade regulations of various countries have successively imposed restrictions on EPS, etc. Packaging materials are restricted from use until prohibited. The United States, Canada, Japan, the European Union and other regions have successively formulated strict packaging waste restriction laws, prohibiting the use of EPS materials in transportation packaging and sales packaging, and requiring pulp molded products instead. In order to adapt to the general trend of the world’s “green revolution”, in September 1991, the 12 countries of the European Community jointly promulgated the mandatory standard “New Packaging Rules”, which clearly stipulated that from 1992, the use of polystyrene ( EPS) foam plastic packaging, and replaced by pulp molded product packaging, which has created favorable conditions for the promotion of pulp molded products.

As one of the parties to the Montreal Protocol, my country has made solemn commitments to the international community for many times to protect the human environment and reduce the harm of EPS to humans and the environment. Article 17 of the Prevention and Control Law of the People’s Republic of my country clearly stipulates that “products should be packaged in materials that are easy to recycle, dispose of, or easy to consume in the environment”, “the prevention and control of environmental pollution by solid waste, the implementation of reducing solid waste, Principles of Rational Utilization of Solid Waste and Harmless Disposal of Solid Waste”. Then, on February 13, 2003, the EU announced the ROHS Directive, which stipulates: “From July 1, 2006, the following six hazardous substances shall not be contained in the electrical and electronic equipment newly placed on the EU market: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE).”

my country has also successively promulgated some laws and regulations, which echo the ROHS directive. Styrofoam is therefore limited. With the strengthening of people’s awareness of environmental protection and the rational use of resources, styrofoam should be used in very few products that cannot be replaced by pulp molding.