The big green packaging (below)

Start with reusable, renewable, edible, and degradable aspects
Repeated use of packaging such as the implementation of beer, beverages, soy sauce, vinegar and other packaging using glass bottles, repeated use. In Sweden and other countries, PET PET beverage bottles and PC milk bottles have been reused for more than 20 times. Wellman Holland and Holmson of the United States have recycled 100% PET containers. For example, polyester bottles can be regenerated in two ways after they are recycled. The physical method refers to the direct and thorough purification and comminution without any residual contaminants. The treated plastics are then used directly in the recycling of packaging containers; the chemical method refers to the recycled PET. After crushing and washing, depolymerizing agent such as methanol, ethylene glycol or diethylene glycol is used to depolymerize PET into monomers or partially depolymerize into oligomers under the action of a basic catalyst. After purification, monomers or oligomers are polymerized again. Recycled PET resin packaging material.

Eatable For decades, the familiar glutinous rice paper used for candy packaging and corn baking packaging cups for packaging ice cream are typical edible packaging. Among the more mature synthetic packaging films is the pullulan resin that has been industrialized since the 1970s. It is an odorless, odorless, amorphous, amorphous white powder that is non-ionic, non-reducing and stable. Polysaccharides. Since it is a polyglucose composed of a-glucoside, it is easily dissolved in water and can be used as a viscous, neutral, nonionic, non-gelatinized aqueous solution.

Its 5%-10% aqueous solution can be made into a film with a thickness of 0.01mm by drying or hot pressing. It is transparent, colorless, odorless, nontoxic, has toughness, high oil resistance, can be eaten, and can be used as food packaging. . Its gloss, strength, and folding resistance are all better than films made from high-chain starch.

Recently, researchers in Wuhan developed a new edible packaging film for inner packaging materials. The product is made from raw materials such as dried husks, potatoes, broken rice, etc. through fermentation to convert into polysaccharides, which are then stretched into films. The membrane is a macromolecule made of glucose, which has the characteristics of edible, degradable, colorless and transparent, and good oxygen barrier. As a food packaging film, its right-angle tear strength, mechanical strength, light transmission, etc. can reach the film standard of plastic packaging. After the film is made into a bag, milk powder and salad oil do not leak oil, and can be consumed together with milk powder in water.

Degradable packaging

Degradable material refers to a plastic whose chemical structure changes under a specific environment at a specific time. Degradable plastic packaging materials not only have the functions and characteristics of traditional plastics, but also can be decomposed and reduced in the natural environment through the action of ultraviolet light in the sunlight or microorganisms in the soil and water after the service life is completed. Re-enter the ecological environment. The degradable plastics are mainly divided into synthetic photodegradable plastics, photodegradable plastics and biodegradable plastics added with photosensitizers, and multi-functional degradable plastics that are combined with various degradable plastics. According to the environmental conditions of degradable plastics, it can be divided into photodegradable plastics, biodegradable plastics (fully biodegradable plastics, partially biodegradable plastics), chemically degradable plastics (oxygen degradable plastics, water degradable plastics), and composites composed of the above three degradable plastics. Degradation material.

China's active development of packaging materials for green packaged export goods can only be allowed to enter the importing country if it meets the requirements of the importing country, otherwise the customs of the importing country will not release it. Many countries restrict or impose mandatory supervision and management on the packaging materials of imported goods in the form of laws and regulations. For example, the United States stipulates that the packaging of imported goods must not use straw, otherwise it will be forcibly burned. The packaging of imported goods by the Ministry of Agriculture and Fisheries of Xinxi Temple shall not be hay, straw, bamboo mats, etc. For this reason, our country has done a lot of work. The first is to avoid the use of toxic materials. Pigments, dyes, and paints used on packaging containers or labels should be made of materials that do not contain heavy metals. Adhesives used as bonding materials should not only be toxic or toxic, but also be easily decomposed during separation.

The second is to use recycled materials as much as possible. At present, recycled recycled materials used in the world are mostly recycled paper, recycled cardboard boxes, molded pulp, peak pulp boards, and paper tubes made after recycling waste paper. The third is to actively develop plant packaging materials. Plants can basically reproduce continuously and multiply, and the extensive use of plants generally does not harm the environment, ecological balance and maintenance of resources, and is favored by the international packaging market. Fourth, choose a single packaging material. This eliminates the need to use special tools to disassemble the material. It also saves time for recovery and separation, and avoids the difficulties of recovery and separation due to the use of bonding methods.

Move closer to the international community on environmental signs

The ISO14000 environmental management system international standard stipulates that any product that does not meet the standard can be rejected by any country, so that products that do not meet the standard are excluded from international trade. China's environmental labeling system has fewer product categories and can not meet the needs of foreign trade development. Only by following this international trend and adopting active and effective means to catch up, can we fundamentally protect our country's foreign trade interests. At the same time as typical routes, this standard system is popularized. In addition, international environmental standards should also be studied as soon as possible. The international standards can be translated into national standards through administrative and legislative procedures, and can be used throughout the country. Domestic supporting regulations related to this international standard should also be formulated as soon as possible.

Packaging design must highlight the connotation of environmental protection

Designers must investigate the specific requirements of the international market for environmentally friendly packaging, such as regulations on environmentally friendly packaging in exporting countries, the depth of consumer environmental protection consumption concepts, green organization activities, and development trends in environmental packaging, so that these factors can be fully taken into account in the design of packaging. In addition, the design of environmental protection should also be considered in the packaging design. This sign is different from the environmental label and can be designed by manufacturers, suppliers or wholesalers to indicate that a certain product has a specific environmental quality in order to obtain a consumer. The goodwill has reached the goal of expanding marketing.