Completely degradable tableware, i.e. degradable tableware, has the following main differences from corn starch tableware:

1. Different production principles

1. Traditional plastic tableware: There are five main types of plastics commonly seen in life, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene- Styrenic copolymer (ABS). Tableware is usually made through processes such as heating and plasticizing, injection molding, cooling and solidification. The raw materials of these five plastics are petroleum and are non-degradable plastics.

2. Biodegradable tableware: It is a plastic produced from biomass as raw material, which can reduce the consumption of traditional energy such as petroleum. It mainly includes PLA (polylactic acid), PHA (polyhydroxyalkanoate), PGA (polyglutamic acid) )wait.

3. Corn starch tableware: Corn starch is used as the main raw material and is processed through high-tech production technology. It can degrade by itself under natural conditions. At present, most tableware is made of corn starch mixed with plastic materials.

4. Biodegradable pulp molded tableware: It is made of pure natural biological materials such as sugar cane pulp and straw. It originates from nature and returns to nature. Among them, sugarcane pulp tableware is made of sugarcane pulp fibers that are vacuum-adsorbed into the mold and then molded by a 300-degree high-temperature mold. It can be completely degraded in natural compost within 90 days.

2. Different characteristics

1. Traditional plastic tableware: safe and stable, does not release toxic substances, does not react with water, greasy and other foods; has good strength and toughness, good dimensional stability, can withstand general mechanical washing, is resistant to falling and is not prone to accidents Brittle fracture. High temperature resistance (100℃)

2. Biodegradable tableware: products with relatively harsh natural degradation conditions. The materials are PLA, PBAT, PHA and other materials. They can replace non-bioplastics to a certain extent. They have good biocompatibility, bioabsorbability, and good heat resistance. performance. Degradation conditions are relatively harsh and most products cannot be completely degraded.

3. Biodegradable pulp molded tableware: Made from sugar cane pulp, straw, and PLA+PBAT, it is a perfect substitute for plastic under the plastic ban policy. It has the characteristics of buffering, compression resistance, shock resistance, etc. Product features: It will not produce any garbage residue and pollution, and it is an environmentally friendly container from nature.

4. Corn starch tableware: no pollution to the human body. Because it is refined from corn starch and other environmentally friendly materials, it does not contain substances harmful to the human body and can be used for a long time. The zero-pollution product is buried in the soil and at a suitable temperature, It can be degraded into carbon dioxide and water after 90 days, without causing pollution to the soil and air; high-quality products have good dense texture, water resistance, oil resistance, and anti-penetration. They also have good high temperature and low temperature resistance, and are suitable for refrigerator freezing, cold storage, and preservation. Food, microwave heating, etc.

3. Different main ingredients

1. Traditional plastic tableware: the raw materials are petroleum and are non-degradable plastics.

2. Biodegradable tableware: made of plastic as the main component and added with starch, photosensitizers and other substances.

3. Corn starch tableware: The main ingredients are carrier resin, corn starch, coupling agent, wetting agent, phase solvent and other low molecular compositions, which are also mixed with some plastics to enhance the hardness of the tableware.

4. Practicality and experience are different

1. Traditional plastic tableware: Traditional plastic tableware has good strength and toughness, good dimensional stability, can withstand general mechanical washing, is resistant to falling and is not prone to brittle fracture, and is highly practical. However, it is easy to cause white pollution and cause irreparable damage to the environment. At present, the country has issued corresponding plastic ban orders.

2. Biodegradable tableware

The main degradable ingredients are modified starch + PLA.

Tableware is completely converted into carbon dioxide and water in the natural environment, and the degradation cycle in the natural environment is generally about 4 months. Fully degradable tableware theoretically causes zero harm to the natural environment and stems from the return of nature to nature.

However, the degradation conditions are relatively harsh, and the material cost is very expensive, and most of them are imported.

3. Biodegradable tableware

Sugarcane pulp, straw, as well as PLA, PBAT and other materials. Sugar cane pulp is a natural, highly concentrated fiber material. The product can be completely degraded in a natural state within 90 days and can be composted by households and industries. After degradation, the main components are water and carbon dioxide, and will not produce any garbage residue or pollution. As a packaging container, it has the characteristics of cushioning, pressure resistance, and shock resistance, and can effectively protect the packaged products. Through the most advanced technology, today's sugarcane pulp tableware can basically realize various application scenarios of traditional lunch boxes. Moreover, the material cost is lower than that of PLA and other high-tech materials, giving it a price advantage.

4. Corn starch tableware is currently divided into two types on the market, namely degradable and fully degradable.

The main ingredients of degradable tableware are modified starch + polypropylene PP as the main material; one is the main ingredient is modified starch + PLA.

After consumers use and discard them, they reduce carbon emissions when incineration. After consumers use them, they accelerate the decomposition of plastics into sheets and particles under natural conditions (sunlight, rain, microorganisms, animals, etc.), reducing the impact of plastics on the natural environment.

However, the corn starch tableware currently on the market is mixed with fish eyes and has some imperfections. Some manufacturers mix non-degradable plastics such as PP into the tableware to increase the hardness of the tableware.

For real corn starch tableware, the corn starch content can be close to 95%, and the remaining small part is some additives, but its practicality is not very good. If the corn starch content is low, it must be mixed with many other ingredients, but these ingredients Most of them are not easily degraded and are even similar to plastic. But there is too much cornstarch, and the cup is really useless. If it encounters hot water, the cup will be soaked within half an hour.