Product classification of degradable tableware

Mar 24, 2025

There are two types of materials used for degradable tableware: one is made of natural materials, such as paper products, straw, starch, etc., which are degradable and are also called environmentally friendly products; the other is made of plastic as the main component, adding starch, Made of photosensitizer and other substances.

GB18006.3-2020 "General Technical Requirements for Disposable Degradable Tableware" has stricter requirements on tableware that can be marked as "degradable". For example, the biodegradation rate must reach more than 60%, and the starch content of degradable tableware with starch content must not be low. At 40%, most domestic manufacturers of biodegradable tableware can meet the above standards

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Classification of degradable plastics

According to the degradation pathway, degradable plastics can be divided into photodegradable plastics, thermally oxidizable plastics, and biodegradable plastics. According to the source of raw materials, it can be divided into petrochemical-based degradable plastics and bio-based degradable plastics.

Photodegradable plastics and thermal oxygen degradable plastics

Photodegradable plastics are plastics that degrade under the action of natural light; thermally oxygen-degradable plastics are plastics that degrade under the action of heat and/or oxidation. The problem in the application of these two types of degradable plastics is that they are restricted by the degradation conditions and do not degrade, so the application is restricted.

Biodegradable plastic

Biodegradable plastic refers to the action of microorganisms existing in nature under natural conditions (such as soil and/or sand, etc.) and/or under specific conditions (such as composting conditions or anaerobic conditions or aqueous culture fluids). Cause degradation, and eventually degrade into carbon dioxide or methane, water and mineralized inorganic salts of the elements contained therein, and new biomass plastics. Its attractiveness is that it can be decomposed in a short period of time under composting conditions, returning to nature and being environmentally friendly.

The meaning of biodegradability

Biodegradability refers to the possibility of environmental pollutants being degraded by microorganisms.

The possibility of environmental pollutants being degraded by microorganisms. According to their biodegradability, organic pollutants can be divided into: ① Biodegradable substances, such as monosaccharides, starch, protein, etc.; ② Non-biodegradable substances, such as cellulose, pesticides, hydrocarbons, etc.; ③ Non-biodegradable substances, Such as plastic, nylon, etc. The above classification has no clear boundaries. Due to the variation and adaptation of microorganisms, some non-biodegradable substances may also be degraded under suitable conditions.

Biodegradable natural material lunch box

Disposable degradable lunch boxes made of natural materials are also called biodegradable lunch boxes. The biodegradable lunch box is a relatively advanced environmentally friendly product. It uses starch as the main raw material, adds annual plant fiber powder and special additives, and is processed by chemical and physical methods to make a biodegradable fast food box. Because starch is a biodegradable natural polymer, it is decomposed into glucose under the action of microorganisms, and finally decomposed into water and carbon dioxide. In addition, the material blended with it is also a fully degradable material, so it can be said that it has no impact on the environment. The main source of raw material starch can be corn, potatoes, sweet potatoes, cassava and other annual-growing plants. Naturally, biodegradable lunch boxes are not perfect. For example, most of the production materials are food crops, and there are problems such as mildew resistance that need to be resolved.

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