Three categories of environmental plastic packaging

If you press the raw materials that so environmentally friendly plastic bags mainly into three categories: recycled plastics, biodegradable plastics and edible plastic.

First, the recycled plastic

Recycled plastic is reused plastic, after grinding operation by mechanical blade, thereby completing the re-use of plastics.

Recycled plastic refers to the processing of waste plastics by pretreatment, melt granulation, modified, and other physical or chemical means re-obtain plastic raw materials, plastic is reused.

Plastics recycling biggest advantage is the price is cheaper than the new material, although it is the performance of the property as a whole are not as strong new material, but we did not need to use the kind of performance in all aspects of property and many products are good material productions to make it, so no need to waste a lot of attributes, and recycled materials will be different, depending on the needs, only one aspect of the process attribute, it is possible to create a corresponding product can be, so do not let the loss of resources .

Second, biodegradable plastics

Biodegradable plastics is the added amount of the additive in the production process (such as starch, modified starch or other cellulosic, photosensitizers, biodegradation and the like), decreased stability, easier in the natural environment biodegradable plastic. Biodegradable plastic is divided into four categories:

1, biodegradable plastics

Holding dry, without dark, wide range of applications, not only it can be used for agricultural film, bags, and is widely used in the field of medicine. With the development of modern biotechnology, bio-degradable plastics more and more attention, it has become a hot research and development of a new generation.

2, the light-degradable plastics

Photosensitizer incorporated in the plastic, the plastic in the sunshine gradually decompose. It belongs to an earlier generation of degradable plastics, the drawback is the time due to sunlight degradation and climate change are difficult to predict, and therefore can not control the degradation time.

3, water degradable plastics

Add water-absorbing material in the plastic, disposable after use in water that can dissolve away, mainly for medical and health aspects appliances (such as medical gloves), to facilitate destruction and disinfection.

4, light / biodegradable plastics

The combination of light and microbial degradation of a type of plastic, it also has the characteristics of light and microbial degradation of plastics.

Third, edible plastic

Edible plastic, is an edible packaging, ie, edible packaging, generally composed of starch, protein, polysaccharide, fat, complex class composition of matter, is widely used as plastic wrap, packaging films, high packaging, food packaging, Pastry packaging, flavoring and packaging.

With the development of modern food industry, food packaging constantly updated, one can improve the contradiction between environmental protection, new packaging materials and food packaging technology materials - edible packaging stand out. Edible packaging material means that after the realization of the function when the packaging, the material can be transformed into an animal or human edible raw materials, packaging materials can be achieved is a function of the transformation of special packaging materials. Edible packaging material is a waste-free packaging, is a resource-based environmentally friendly packaging materials.

Source: Internet