The difference between fully degradable plastic bags and degradable plastic bags

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Nowadays, in the environment of green environmental protection, more and more customers and consumers are beginning to pay attention to the environmental protection of plastic bags and begin to understand green degradable plastic bags. However, in fact, degradation can be divided into two categories: "degradable" and "fully degradable" kind. How to distinguish between the two, first we need to know what degradable plastic bags and fully degradable plastic bags are.

Biodegradable plastic bags refer to adding a certain amount of additives during the plastic production process to reduce their stability and make them easier to degrade in the natural environment. Although this kind of plastic product can be degraded, it cannot be completely degraded. And this kind of petroleum-based product is decomposed through chemical reactions rather than organically by microorganisms, so it cannot be completely decomposed into organic matter. Instead, it will be decomposed into tiny fragments and enter the environment. These microplastics are ingested by animals and enter the food chain, and can eventually be returned through the biosphere. Human society causes major problems.

Fully degradable plastic bags refer to plastic bags that can be completely degraded into water and carbon dioxide. The main source of this fully degradable material is corn, cassava, etc. that are processed into lactic acid, also known as PLA. It has good biodegradability and can be completely degraded by microorganisms in nature under specific conditions after use, ultimately generating carbon dioxide. It does not pollute the environment and is very beneficial to protecting the environment. It is a recognized environmentally friendly material.

Now that we understand the definitions of the two, we can learn how to distinguish them.

1. Observe the appearance: The raw materials of fully degradable plastic bags are PLA, PBAT, starch or mineral powder materials. There will be special marks on the outer bags, such as the common "PBAT+PLA+MD". For degradable plastic bags, the raw materials It is made of PE and other materials, and common ones include "PE-HD" and so on.

2. Touch with your hands: Due to different raw materials, the feel of the two is also very different. Unlike degradable plastic bags that feel plasticky, fully degradable plastic bags feel silky and soft to the touch.

3. Smell the smell: Biodegradable plastic bags are usually odorless or have a plastic smell, while fully degradable plastic bags, especially starch-based bags, will have a faint grain aroma, and the material itself will also have some corn, cassava and other aromas.

4. Combustion test: The burning of traditional plastic bags will produce black smoke and a pungent smell, and finally burnt particles will be left behind. There is no thick smoke or pungent smell when burning fully degradable plastic bags. After burning, only organic powder remains, which can be decomposed and absorbed.

3. Price difference: Due to the limitations of material production capacity and cost, the current price of good-quality biological plastic bags in large supermarkets is basically 0.5-2 yuan each, which is higher than traditional plastic bags which are only about 0.2 yuan. Quite a few.

Huawei New Materials

One of the biggest biodegradable plastic products and bio Plastic bag manufacturer in China.

The company has a registered capital of $7 million US dollars and covers an area of 100 acres, Annual output reaches 50,000 tons of

biodegradable resins

.

Our bio Plastic bag manufacturer covers

starch based biodegradable & compostable resins

,

Calcium Carbonate  based biodegradable & compostable resins

, PLA based biodegradable & compostable resins,  PBS based biodegradable & compostable resins.

As early as 2010, the production technology of biodegradable plastics had been developed and put into production in Huawei New Materials.