Differences in degradation conditions between pulp molded ta
NEWS / 2021-08-10 14:32
The uncontrolled production and use of disposable plastic tableware will cause a global energy problem. The solution to disposable plastic tableware The two solutions to disposable packaging plastic use proposed in China are the use of paper tableware and biodegradable plastic tableware.
First of all, let's briefly talk about what is paper tableware and biodegradable plastic tableware? Paper tableware refers to the pulp molded tableware material (the main material plant fiber). And biodegradable plastic tableware can be divided into three basic categories: photodegradable, biodegradable and starch-degradable.
Here we will talk about the degradation of pulp molded tableware and degradable plastic tableware.
What are the conditions of degradable plastic tableware?
Producer's statement: It is only possible to achieve such a process in 6 months in industrial composting conditions.
What are industrial composting conditions?
A certain temperature: usually 50-60 degrees Celsius, which the average soil does not reach. In addition, a certain level of humidity, a certain amount of bacteria, and a certain amount of oxygen consumption are needed to achieve industrial composting conditions. These conditions are not achievable in any natural environment.
Putting aside the material itself, there is no widespread industrial composting industry in China, and the waste separation and recycling system is not working well. Promoting the use of "biodegradable plastics" will probably bring new "white pollution". The propaganda of "biodegradable plastic" will easily mislead the public into thinking that it is a material that "disappears on its own without disposal".
What happens when it enters ordinary soil?
In 2010, the Agricultural University of Athens, Greece, used actual soil in the Mediterranean Sea to test the degradation of PLA biodegradable plastic, and it only partially disintegrated and partially broke up in 11 months. 2014, the Central South University of Forestry and Technology simulated natural soil, and PLA was used to test plastic for 12 months, and its mass loss was only 0.23% after 12 months, almost no degradation.
What happens when it enters the ocean?
A 400-day trial at the University of Maillot, Germany, in 2017, put a variety of biodegradable plastics in industrial compost to achieve degradability, laid out in seawater and freshwater, and the final PLA only about 0.5% mass loss. Look at the degradable plastic tableware needs to degrade then it is really not simple ah, so many demanding conditions.
Then we look at the degradation of pulp molded plastic conditions as long as the pulp molded plastic tableware buried in ordinary soil on the line.
Figure 1 shows (20 days of degradation)
Figure 2 is (60 days of degradation)
As the pulp molded tableware is made of pure natural plant and pulp fiber as raw material. (straw pulp, wood pulp, bamboo pulp, reed pulp, etc.)
So it can be 100% degradable and the impact on the environment is much lower than that of biodegradable plastic tableware.
Advantages of pulp molded tableware
1、Environmental protection and hygiene, non-toxic and harmless.
2、Resistant to 120℃ hot oil and 100℃ hot water, no deformation and leakage.
3, suitable for microwave oven baking, refrigerator freezing and preservation, high temperature steaming.
4, with recycling value, the waste can be recycled, saving resources and protecting the environment.
5, natural degradation mudification into organic fertilizer, reduction to carbon dioxide and water.
6, generous appearance, practical, low cost, easy to be accepted by consumers.
We are a science and technology environmental protection enterprise mainly producing and processing disposable straw environmental protection tableware using straw fiber such as wheat straw, sugar cane, rice straw and reed and selling products. Our disposable environmental protection tableware can be completely degraded into organic fertilizer after use, and the indicators of waterproof, heat-resistant, oil-resistant, and refrigerable fully meet the international environmental health requirements.
We will take advantage of the comprehensive utilization of straw, continue to promote technological innovation and new product development, the straw into an alternative to plastic and other chemical products of emerging materials, should be to food packaging, agricultural packaging, medical packaging, industrial packaging, entertainment toys, new construction materials and other fields, to reduce pollution, create a blue sky and a livable living environment and contribute to!