The role of green packaging film popular

The current green packaging films mainly include: edible films, degradable packaging films, and water-soluble plastic packaging films. The following are brief introductions to these types of films.

The edible film is a film with a porous network structure formed by natural molecular interactions (eg, polysaccharides, proteins, etc.) as raw materials through the interaction of different molecules. Such as chitosan edible packaging film, corn protein packaging film, modified cellulose edible packaging film and composite edible packaging film, etc., edible film can be applied to the inner packaging of various ready-to-eat foods, in the food industry should Has a huge market.

The biodegradable packaging film mainly solves the problems of waste and non-degradable packaging materials. It is difficult to recover the packaging materials. When burying it underground, the soil structure will be destroyed, and incineration processing will produce toxic gases that cause air pollution.

The biodegradable plastic packaging film not only has the functions and characteristics of traditional plastics, but also can be split and degraded in the natural environment through the action of microorganisms in the soil and water or the ultraviolet rays in the sunlight after the service life is completed, and finally be restored in a reduced form. Enter the ecological environment and return to nature.

Biodegradable plastics are generally divided into biodegradable plastics, photodegradable plastics and biodegradable plastics. Domestic research and development of products have covered light degradation, photobiodegradation, photo-oxygen biodegradation, high-starch content biodegradation, high-starch content biodegradation, high-calcium carbonate filled photo-oxygen degradation, and biodegradation; The application of products in packaging has been widely used in ordinary packaging films, shrink films, shopping bags, garbage bags, etc., and has played a positive role in improving the quality of the environment.

As a novel green packaging material, water-soluble plastic packaging film is widely used in the packaging of various products in Europe, America, Japan and other countries. Due to its complete degradation and safe and convenient use, it has been widely recognized by developed countries in the world. .