What Is An Environmentally Friendly Plastic Packaging Bag?

 Then there are three main categories of environmentally friendly plastic packaging bags: degradable plastics, edible plastics and recycled plastics.

1. Degradable plastics

Degradable plastics refer to plastics that are added with a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) during the production process, and their stability is reduced, and they are easier to degrade in the natural environment. Biodegradable plastics are divided into four categories:

1. Light-degradable plastics

The photosensitizer is mixed into the plastic to gradually decompose the plastic under sunlight. It belongs to an earlier generation of degradable plastics. Its disadvantage is that the degradation time is difficult to predict due to sunlight and climate changes, so the degradation time cannot be controlled.

2. Biodegradable plastics

It is dry, does not need to be protected from light, and has a wide range of applications. It can not only be used in agricultural mulch film and packaging bags, but also widely used in the field of medicine. With the development of modern biotechnology, more and more attention has been paid to biodegradable plastics and has become a new generation of research and development hotspots.

3. Light/biodegradable plastics

A type of plastic that combines photodegradation and microbes. It has the characteristics of both photodegradation and microbe degradation of plastics.

4 Water-degradable plastics

Water-absorbent substances are added to plastics, which can be dissolved after being used up and discarded in water. They are mainly used for medical and sanitary appliances (such as medical gloves) for easy destruction and disinfection.

2. Edible plastics

Edible plastic is a kind of edible packaging, that is, edible packaging, which is generally composed of starch, protein, polysaccharide, fat, and composite substances. It is widely used in plastic wrap, packaging film, high-point packaging, food packaging, Pastry packaging, seasoning packaging, etc.

With the development of the modern food industry, food packaging is constantly updated, and a new type of food packaging technology material that can improve the contradiction between packaging materials and environmental protection-edible packaging stands out. Edible packaging material means that when the packaging function is realized, the material can be transformed into an edible raw material for animals or humans, and it is a special packaging material that can realize the transformation of the packaging material's function. Edible packaging material is a kind of waste-free packaging and a resource-based and environmentally friendly packaging material.

3. Recycled plastics

Recycled plastic is the reuse of plastic. After the mechanical blade crushing operation, the reuse of plastic is completed.

Recycled plastics refer to plastic raw materials that are re-obtained after processing waste plastics through physical or chemical methods such as pretreatment, melt granulation, and modification, and are the reuse of plastics.

The biggest advantage of recycled plastics is that the price is definitely cheaper than new materials. Although its overall performance and attributes are not as strong as new materials, we do not need to use materials that have good properties and performance in many products. To make it, it wastes a lot of unnecessary attributes, and the recycled material is different. According to different needs, only a certain aspect of the attribute needs to be processed to produce the corresponding product, so as not to lose resources.