Ⅰ. How to identify:
The environmentally friendly disposable plates and cutlery made of wheat straw are harder, not easy to deform, and can be recycled for many times. Tableware made of ordinary plastics has a low hardness. It can be deformed with a little force, and can not be recycled.
When tableware made of ordinary plastic is burned, it will produce unpleasant gas, which is toxic and can cause harm to the human body. High temperature environments can also cause plastics to decompose toxic components. Wheat straw fiber is a natural material and does not contain harmful substances. Biodegradable plates and bowls made of wheat straw will not produce toxins in high temperature environments.
The biodegradable plates and bowls made of wheat straw are meticulous in workmanship and generally brown in color. Tableware made of ordinary plastic is rough in workmanship and generally white in color.
4. Smell the taste by putting the two kinds of tableware into a container with boiling water
Generally, the plates and bowls made of wheat straw does not have pungent smell but a slight smell of plants, even if they are washed and disinfected by hot water for many times.
5. Burn it
Generally, the smell of tableware made of pure plastic material will be very pungent after being burned, while that of tableware made of wheat straw is not unpleasant.
6. Beat hard
Generally, pure plastic tableware is very tough and strong. However, the biodegradable plates and bowls made of wheat straw are not so tough. They can be easily broken under vigorous beating.
7. Utilization rate
The utilization rate of environmentally friendly disposable plates and cutlery made of real pure straw is very low, and some are even disposable. At present, the tableware made of wheat straw that is repeatedly used on the market is made by wheat straw added with some stereotyped chemical additives.
Wheat straw piles are not easy to be handled in the field. Incineration will pollute the environment. If they can be processed into products, it will not only realize resource utilization, but also reduce environmental pollution. Various disposable lunch boxes are produced through shredding, decomposing, pulping, shaping, trimming of piles of wheat straw.
The main components of wheat straw are cellulose, hemicellulose, lignin, polyuronic acid, protein and minerals. Among them, the content of cellulose, hemicellulose and lignin is as high as 35% to 40%. The active ingredients are cellulose and hemicellulose.
Features of wheat straw tableware:
1. With high temperature resistance, low cost, degradable, high toughness and no heavy metals, it is a good environmentally friendly product.
2. If you want to directly make wheat straw or starch and other raw materials into tableware, you need to add some fusion agents, which are PP (polypropylene) or PET in most cases so that the product can be formed. Some substances are added to tableware to ensure the normal use of the product.
3. The additives must be food grade as required by the state.