A brief discussion of green packaging (in)

1. Package designers should use green packaging materials and design life-span packaging materials as much as possible, which can greatly reduce the environmental pollution caused by discarded packaging.
2, reduce the packaging. Minimize the use of materials in packaging design, eliminate unnecessary packaging, and promote simple packaging to save resources.
3, the packaging material is simple. Use as few materials as possible. Do not mix dissimilar materials for recycling.
4, the packaging design can be disassembled. Packagings that require a composite material structure should be designed as a detachable structure that facilitates recycling after disassembly.
5, packaging materials can be reused. Use recyclable, multiplexed, and recycled packaging to increase the life cycle of the package and reduce packaging waste.
6, the harmlessness of packaging materials. The regulations prohibit the use or reduction of the use of packaging materials containing certain harmful ingredients and stipulate the content of heavy metals.
Green packaging materials are divided into the following categories:
1. Repeated reuse of reusable and recyclable packaging materials, such as glass bottles for beverage packaging, can be used repeatedly. Recycling, that is, regeneration after recycling, there are two methods of regeneration: one is the physical method, refers to the direct and thorough purification and smash, without any residual contaminants, the treated packaging material is used to regenerate packaging containers; the other is The chemical method means that after the recovered plastic is pulverized and washed, the depolymerization agent is used to depolymerize into a monomer or partially depolymerize into an oligomer under the action of a basic catalyst, and the monomer or oligomer is polymerized and regenerated after regeneration. Packaging Materials.
The repeated use and regeneration of packaging materials only prolongs the service life of polymer materials as packaging materials, and when they reach the end of their useful life, they still have to deal with waste disposal and environmental pollution.
2. Edible packaging materials Synthetic edible packaging film matured is the pullulan resin that has been industrialized in the 1970s. It is a non-ionic, non-reducing, stable polysaccharide that is easily dissolved in water and is colorless. Odorless, non-toxic, tough, high oil resistance, can eat.
3. Degradable materials Degradable materials are plastics whose chemical structure changes in a specific environment that causes performance loss in a specific period of time. It not only has the functions and characteristics of traditional plastics, but also can be split and degraded and reduced in the natural world through the action of ultraviolet light in the sunlight or the micro-environment in the soil and water after the service life is completed, and finally reenters the ecology in non-toxic form. In the environment, return to nature.
4. The raw material of paper waste potato is mainly natural plant fiber. It will rot quickly in nature and will not cause pollution to the environment. It can also recycle paper. Pulp molded products not only have the advantages of light weight, low cost, shock resistance, etc., but also have the characteristics of good air permeability, and are widely used in the packaging of fragile, fragile, and afraid of extruded articles.
The application of paper packaging in green packaging Among the four packaging materials: paper, plastic, metal, and glass, paper products have the fastest growth, paper and plastic are the cheapest, raw materials are widely available, and are not as fragile as glass. Also not as heavy as metal, easy to carry. Therefore, paper and plastic packaging are widely used in daily life. The International Health Organization and domestic environmental protection experts believe that domestic and foreign markets will gradually ban the use of plastic bags, and regulations must use environmentally friendly paper bags. Paper products are prone to decay and can either recycle recycled paper or make plant fertilizers, reduce air pollution, and purify the environment. The waste paper imitation plastic packaging materials now developed have good air permeability, flexibility, toughness and strength. The products are non-toxic, non-polluting, rich in raw materials and low in cost, and can be widely used for packaging various products. Therefore, compared with plastic, metal and glass, paper packaging will become one of the most promising green packaging materials.
There are three ways to deal with waste products after paper products are packaged in graves: one is to recycle and reuse paper or continue to make paper products; the other is natural degradation and use as fertilizer; The situation can be burned without producing toxic gases. The recycling of paper packaging waste has the following significance: It can reduce the consumption of natural fiber raw material resources, solve the problem of shortage of packaging resources; greatly reduce production costs, achieve greater social and economic benefits; reduce packaging pollution, To protect the environment, we must actively promote recycling of paper packaging waste.
Eco-friendly ink - The effect of ink in green printing on the environment is very large, and when used in food packaging and printing, the harmful components of ink directly harm the health of consumers. The environmental issues related to ink are: (to be continued)