With the rapid development of packaging industry, the innovation of material application technology and the increasing attention of people’s environmental protection concept, more and more plastic packaging are made of environmentally friendly materials.If according to the production of raw materials, then the main three categories of environmental plastic bags: recycled plastic, degradable plastic and edible plastic.
Recycled Plastic
Recycled plastic is the reuse of plastic, through the mechanical blade grinding operation, so as to complete the reuse of plastic.
Recycled plastic refers to the plastic raw materials obtained again after processing waste plastic by physical or chemical methods such as pretreatment, melting granulation and modification, which is the reuse of plastic.
The greatest advantages of recycled plastic is definitely cheaper than the new material price, though it’s on the overall performance and properties are not as good as new material is strong, but we don’t need to use in a lot of products made the properties and performance of all the good material to make it, so that wasted a lot of a lot of unnecessary attributes, and the reworked material is different, according to different needs, Only need to process a certain aspect of the attribute, can make the corresponding product, so that there is no loss of resources.
Degradable Plastic
Degradable plastics refer to the plastics that are easily degraded in natural environment due to the addition of certain additives (such as starch, modified starch or other cellulose, photosensitizer, biodegradation agent, etc.) in the production process. Degradable plastics fall into four main categories:
1.Biodegradable Plastic
Dry, do not need to avoid light, a wide range of applications, not only can be used for agricultural plastic film, packaging bags, and widely used in the field of medicine. With the development of modern biotechnology, biodegradable plastics have been paid more and more attention and become a new hot spot in research and development.
2.Photodegradable Plastic
A photosensitizer is added to the plastic to gradually break it down under sunlight. It belongs to the earlier generation of degradable plastics, and its disadvantage is that the degradation time is unpredictable due to sunshine and climate change, so it is impossible to control the degradation time.
3.Water Degradation of Plastic
Add water absorbent material in plastic, after use, discard in water can dissolve, mainly used in medicine and health appliances (such as medical gloves), easy to destroy and disinfection treatment.
4. Light/biodegradable Plastic
Photodegradation and microbial combination of a class of plastic, it has both light and microbial degradation of plastic characteristics.
Edible Plastic
Edible plastic is a kind of edible packaging, that is, edible packaging, generally composed of starch, protein, polysaccharide, fat, compound substances, widely used in such as plastic wrap, packaging film, high point packaging, food packaging, pastry packaging, seasoning packaging, etc.
With the development of modern food industry, food packaging is constantly updated. A new kind of food packaging technology material, edible packaging, which can improve the contradiction between packaging materials and environmental protection, stands out. Edible packaging material refers to a special packaging material that can be transformed into an edible raw material for animals or people after the function of packaging is realized. Edible packaging material is a kind of packaging without waste, is a kind of resource-based environmental protection packaging material.
Post time: Oct-13-2022