Put on green clothes for food

With the continuous improvement of materials and processing technology, gravure plastic flexible packaging is playing an increasingly important role in many areas. People's lives are inseparable from shopping bags, merchandise bags, garbage bags, and refrigerator storage bags; and industrial products packaging. , Household daily necessities packaging, clothing packaging, pharmaceutical packaging also uses a large number of plastic flexible packaging film.

With the impact of the environmental protection wave, consumers have increasingly higher requirements for product packaging. Green packaging is the need for the development of international environmental protection, but also represents the development trend of packaging industry in various countries. It is one of the important contents of improving product market competitiveness and avoiding new trade barriers.

Corresponding to this, the greening of plastic flexible packaging films has become one of the important trends. There is not a completely unified definition of green packaging. In general, moderate packaging that can be reused, reused, or degraded, and that does not pose a hazard to the human body or the environment throughout the product's lifecycle is called green packaging. The most important meaning of green packaging is to protect the environment, but it also has the significance of resource regeneration.

In addition to doing enough work in recycling, countries all over the world have recognized the importance of environmental protection, and therefore have made efforts in degradable green packaging films. New products are emerging in an endless stream.

Edible packaging films are made of natural edible substances (eg, polysaccharides, proteins, etc.) and have a porous network structure formed by the interaction between different molecules. Such as chitosan edible packaging films, corn protein packaging films, modified cellulose edible packaging films and composite edible packaging films, etc., edible films can be applied to the inner packaging of a variety of ready-to-eat foods, in the food industry huge market.

Degradation film mainly solves the waste and non-degradable packaging materials, and it is difficult to recover. Buried underground will destroy the soil structure, and incineration will produce toxic gases and 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.

Domestic research and development of the variety has covered photodegradation, photobiodegradation, photo-oxygen biodegradation, high-starch content biodegradation, high calcium carbonate filled photo-oxygen degradation, and biodegradation. Degradable plastic products have been used in packaging applications such as ordinary packaging films, shrink films, shopping bags, garbage bags, etc., and have played an active role in improving the environment.

Water-soluble film water-soluble plastic packaging film as a novel green packaging material is widely used in the packaging of various products in Europe, America, Japan and other countries. At present, foreign countries, mainly Japan, the United States, France and other countries, produce and sell such products, and domestic companies have already put into production. Their products are moving toward the market.