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Analysis of green packaging (Part 2)

glass packaging

if it does not contain metals, ceramics and other substances, glass can be almost completely recycled. The content of glass fragments of other colors in a certain color of glass has a maximum limit: ① the maximum content of glass of other colors in green glass is not more than 15%. ② The maximum content of other colors in white glass shall not exceed 3%, of which the maximum content of brown glass shall not exceed 2%, and the maximum content of green glass shall not exceed 1%. ③ The maximum content of other colored glasses in brown glass shall not exceed 8%. Therefore, it is necessary to strengthen the classified collection of glass with different colors. In some developed countries, white glass and colored glass are collected in different containers. Because glass packaging has the advantages of strong visibility and easy recycling, it has become the main container of traditional packaging of beverages and other products

bamboo packaging

bamboo packaging is non-toxic, pollution-free and easy to recycle. Bamboo packaging refers to bamboo plywood boxes, silk bound bamboo crates, etc. China is a country lacking in wood in the world, but the total area of bamboo forests and the reserve of bamboo resources in China rank first and second in the world respectively. Bamboo packaging with strong traditional cultural flavor in China has been favored by Europe, America, Japan and other countries

starting from the aspects of reusability, regeneration, edible and degradability

the reuse of packaging, such as promoting the use of glass bottles for packaging beer, beverages, soy sauce, vinegar, etc., for repeated use. Sweden and other countries implement the reuse of PET beverage bottles and PC milk bottles for more than 20 times. Wellman company in the Netherlands and holmson company in the United States recycle 100% of PET containers. For example, after recycling, polyester bottles can be regenerated in two ways. The physical method refers to the direct and thorough purification and crushing, without any pollutant residue, and the treated plastic can be directly used for recycling packaging containers; The chemical method refers to that after crushing and washing the recycled PET, the depolymerizer methanol, ethylene glycol or diethylene glycol is used to depolymerize the pet completely or partially into monomers or oligomers under the action of alkaline catalyst, and then the monomers or oligomers are re polymerized into regenerated PET resin packaging materials after purification


for decades, the glutinous rice paper used in candy packaging and the corn baking packaging cup used to package ice cream are typical edible packaging. Among the synthetic edible packaging films, the more mature is the industrialized pullulan resin in the 1970s. It is a tasteless, odorless, amorphous, amorphous white powder that adheres to the excellent micro bending properties of the first generation desolite supercoatings. It is a non-ionic, non reducing stable polysaccharide. Because it is a polyglucose composed of a-glucoside, which has large friction or does not rotate when the force measuring piston rotates, it is easy to dissolve in water and can be used as a viscous, neutral, non-ionic non gelatinized aqueous solution

its 5% - 10% aqueous solution can be made into a film with a thickness of 0.01mm after drying or hot pressing. It is transparent, colorless, odorless, non-toxic, tough, high oil resistance, edible, and can be used as food packaging. Its gloss, strength and folding resistance are better than those of films made of high amylose

recently, researchers in Wuhan developed a new type of edible packaging film for inner packaging material. The product is made of dried sweet potato, potato, broken rice and other raw materials, which are transformed into polysaccharides by fermentation, and then the polysaccharides are extended into films. The membrane is a high molecular substance connected by glucose, which has the characteristics of edible, degradable, colorless and transparent, and good oxygen isolation. As a food packaging film, its right angle tear strength, mechanical strength and light transmittance can meet the standard of plastic packaging excellent film. After the film is made into a bag, there is no oil leakage in the milk powder and salad oil, and it can be eaten together with the milk powder in water

degradable packaging

degradable material refers to a kind of plastic whose chemical structure changes at a specific time and in a specific environment. Degradable plastic packaging materials not only have the functions and characteristics of traditional plastics, but also can be used. After the service life is completed, the wedge load experiment that bolts need to do is decomposed and reduced in the natural environment through the action of ultraviolet light in the sun or the action of microorganisms in soil and water, and finally re-enter the ecological environment in a non-toxic form. Degradable plastics are mainly divided into synthetic photodegradable plastics, photodegradable plastics with photosensitizers and biodegradable plastics, as well as multifunctional degradable plastics combined with a variety of degradable plastics. According to the environmental conditions of degradable plastics, they are also divided into photodegradable plastics, biodegradable plastics (fully biodegradable plastics, partially biodegradable plastics), chemically degradable plastics (oxygen degradable plastics, water degradable plastics), and composite degradable materials composed of the above three kinds of degradable plastics

developing green packaging

the packaging materials of export commodities can only be allowed to be imported into the importing country if they meet the regulations of the importing country, otherwise the customs of the importing country will not release them. Many countries restrict or impose mandatory supervision and management on the packaging materials of imported goods in the form of regulations. For example, the United States stipulates that straw shall not be used in the packaging of imported goods, otherwise it will be forcibly burned. The Ministry of agriculture and Fisheries of Xinxi Temple stipulates that the packaging of imported goods shall not be hay, straw, bamboo mats, etc. To this end, China has done a lot of work. First, avoid using toxic materials. Pigments, dyes, paints, etc. used on packaging containers or labels should be made of raw materials that do not contain heavy metals as adhesives for bonding materials. In addition to being free of toxic or toxic ingredients, they should also be easy to decompose during separation

the second is to use recycled materials as much as possible. At present, most of the recyclable recycled materials used internationally are recycled paper, such as recycled cartons, molded pulp, peak pulp paperboard and paper tubes made from recycled waste paper. Third, actively develop plant packaging materials. Basically, plants can continue to reproduce continuously, and the extensive use of plants generally will not cause unqualified coaxiality of the testing machine to the environment, ecological balance and resource maintenance. What is the impact? Harm, favored by the international packaging market. Fourth, choose a single packaging material. In this way, the material can be disassembled without using special tools, and the recovery and separation time can be saved, avoiding the difficulties of recovery and separation caused by the use of bonding methods

move closer to the world in terms of environmental labeling

the international standard of ISO14000 environmental management system stipulates that any country can refuse to import products that do not meet the standard, so that products that do not meet the standard are excluded from international trade. China's environmental labeling system has a small variety of products, which is far from meeting the needs of the development of foreign trade. Only by complying with this international trend and adopting positive and effective means to catch up, can we fundamentally protect China's foreign trade interests. At the same time of typical guidance, popularize this standard system. In addition, international environmental standards should also be studied as soon as possible, which can be transformed into national standards through administrative and legislative procedures, and popularized throughout the country. Domestic supporting regulations related to the international standards should also be formulated as soon as possible

in terms of packaging design, we should highlight the connotation of environmental protection

designers must investigate the specific requirements of the international market for environmental protection packaging, such as the regulations of exporting countries on environmental protection packaging, the depth of consumers' environmental protection consumption concept, green organization activities, the development trend of environmental protection packaging, etc., so that these factors can be fully considered in packaging design. In addition, in the packaging design, we should also consider highlighting the signs of environmental protection marketing. This sign is different from the environmental signs. It can be designed by manufacturers, suppliers or wholesalers to indicate that a certain commodity has specific environmental quality, so as to obtain the favor of consumers and achieve the purpose of expanding marketing

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