What are the main components of the disposable degradable lunch box

With the current global plastic ban and plastic restriction requirements, plastic-free or degradable has become an inevitable trend in the future. The treatment method of ordinary plastics is still incineration and cremation, causing a large amount of greenhouse gases to be discharged into the air, while disposable degradable lunch boxes are It is buried in the soil and degraded, and the generated carbon dioxide directly enters the soil organic matter or is absorbed by plants, and will not be discharged into the air and will not cause a greenhouse effect.

Today let's take a look at the disposable degradable lunch boxes on the market.

1. Pulp molded lunch box (plant fiber molded tableware)

Pulp-molded tableware products have certain advantages on the road of banning plastics. First of all, in terms of raw materials, pulp-molded disposable lunch boxes use plant fibers such as wheat straw and bagasse as raw materials without adding any PP materials. It is formed by wet pressing process, and food-grade additives such as waterproof and oil-proof are added to the pulp to achieve the effect of holding hot and cold food.

Plant fiber degradable lunch boxes are currently the most active type of lunch boxes on the market. Taking Hainan Province, which took the lead in banning plastics, as an example, Hainan Province has completely banned the use, circulation, sales and storage of plastic tableware. Pulp moulded cutlery is undoubtedly an ideal alternative to plastic.

The sugarcane pulp disposable lunch box is a fully degradable lunch box, which can be completely degraded into organic matter in 90 days under the conditions of industrial composting or household composting, returning to nature.

2. Cornstarch-based lunch box

The corn starch degradable lunch box is made of natural corn starch and plant fiber as the base material, supplemented by bio-polyester, polyol and other substances.

Corn starch lunch boxes can be naturally degraded in the soil and natural environment. The degradation rate can reach 60%-80% according to the ingredients of the lunch box. To a certain extent, it can replace plastic products and reduce white pollution to the environment. It is an ideal substitute for the widely used but controversial "sterilized tableware" in the catering market.

3. PLA degradable tableware

PLA degradable lunch box usually refers to a product that combines PLA composite film and pulp molding product in pulp molding process, that is, PLA film-coated product.

PLA composite film is a completely degradable film produced and processed from polylactic acid as raw material, which can be compounded on pulp molding and paper products by heating.

Polylactic acid (PLA) is a new type of biodegradable material made from starch raw materials proposed by renewable plant resources such as corn. Starch raw material is saccharified to obtain glucose, and then fermented from glucose and certain strains to produce high-purity lactic acid, and then chemical synthesis method is used to synthesize polylactic acid with a certain molecular weight. It has good biodegradability, and can be completely degraded by microorganisms in nature after use, and finally generates carbon dioxide and water, which does not pollute the environment, which is very beneficial to protect the environment and is recognized as an environmentally friendly material.

In view of the advantages of PLA, after the lamination process is combined with pulp molded products, it can not only save the use of water and oil repellents, but also better seal the pores of pulp molded products, making it impossible to prevent alcohol. The product prevents alcohol leakage. At the same time, after the air holes are sealed, the tableware reduces the air permeability of the product in the actual use process, the heat preservation performance is higher, and the heat preservation time is longer.