Type of green packaging film

With the continuous deepening of people’s environmental protection concepts, the current demand for green packaging in the packaging field is also getting higher and higher, and its varieties are also emerging. The current green packaging films include: edible films, degradable packaging films, and water-soluble plastic packaging films. The edible film is a film having a porous network structure formed by the interaction of different molecules by using natural edible substances f such as polysaccharides, proteins, and the like. Such as corn protein packaging film, modified cellulose edible packaging film and composite edible packaging film, etc., edible film can be used in a variety of ready-to-eat food packaging, has a huge market in the food industry.

The obstructed packaging film mainly solves the difficulty of the recovery of discarded and non-degradable packaging materials. Buried in the ground will destroy the soil structure, and incineration processing will produce toxic gases causing air pollution.

The barrier 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 of soil and water or ultraviolet rays in sunlight after the function is lost, and finally it is in the form of reduction. Re-enter the ecological environment and return to nature.

Barrier-free plastics are generally divided into biodegradable plastics, photodegradable plastics, and biodegradable plastics. The application of its products in packaging has covered common packaging films, shrink films, bags for more sentences, 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, the United States, IJ, and other countries and regions. It has complete degradation, safe and convenient use, and environmental protection. Therefore, the The more attention is paid to it.

(Liu Gonghua)

Source: Plastics Science and Technology-2006-04