The hottest cigarette packaging changes with time

2022-07-23
  • Detail

Cigarette packaging changes with time gravure cigarette labels focus on environmental protection (Part 1)

with the continuous development of the transformative restructuring of the tobacco industry, especially the adoption of the Framework Convention on tobacco control and the implementation of the Cleaner Production Promotion Law of the people's Republic of China and the law of the people's Republic of China on the prevention and control of environmental pollution by solid waste, the development trend of cigarette packaging has become increasingly clear. This puts forward higher requirements for gravure cigarette label printing enterprises

the development trend of cigarette packaging

1. the demand for the development of the tobacco industry determines the centralization of trend objectives

packaging quality is one of the eternal themes of the tobacco industry, which involves environmental protection technology, decoration and structure design, material selection, printing technology and technology, anti-counterfeiting means, etc. A survey of the development and statistics of tobacco packaging at home and abroad shows that the development trend of tobacco packaging in the world is mainly reflected in the following three aspects:

environmental protection: reducing and eliminating the impact on human health and environmental pollution

anti counterfeiting: it is necessary to protect the legitimate rights and interests and intellectual property rights of famous and high-quality enterprises, maintain the reputation of enterprises, establish a good image of enterprises, facilitate identification and reduce the cost of anti-counterfeiting labels

packaging cost: reduce the packaging cost in various ways to offset the price impact caused by the zero tariff on the import of foreign cigarettes

2. the improvement of policies and regulations will speed up the implementation process of the trend objectives.

. For the first time, the prevention of environmental pollution caused by excessive packaging has been written into the law, and the polluter pays principle and relevant payment regulations have been added. The tobacco industry is currently discussing the revision of the general rules for cleaner production of cigarette enterprises, which will make clear provisions on the environmental requirements of cigarette labels

in order to adapt to the process of global economic integration and enhance the coping ability of cigarette label printing enterprises, the state and industry authorities have issued and will soon take effect a series of policies. The promulgation of these regulations and policies will certainly promote the process of "green packaging" in China

improve the coping ability of gravure cigarette label printing enterprises

in order to actively respond to the development trend of cigarette packaging and enable gravure cigarette label printing enterprises to constantly adapt to changes and meet requirements in the process of reform, cigarette label printing enterprises need to timely adopt coping strategies of technology upgrading, identifying the new and discarding the old, accelerating efficiency and strengthening cooperation

comply with the trend and accelerate the pace of environmental protection

the environmental protection of cigarette labels is reflected in many aspects. But one of the most important indicators is "solvent residue". It has a direct impact on the environmental protection of cigarettes and is the main factor for cigarette enterprises to encounter the "green trade barrier" of western developed countries in the future

the generation of cigarette label odor is mainly due to the residual volatile chemical components in the cigarette package, which will continue to volatilize after the cigarette package is printed and processed, and then produce odor. The paper, ink, printing process, packaging and storage form of finished cigarette labels used in cigarette package printing and processing are all the factors that cause the smell of printed products

1. factors constituting paper odor

printing paper is composed of mountain plant fiber, auxiliary materials, color materials and other chemical additives. The latex in the surface coating (such as benzene latex in domestic paper) has a greater impact on the odor of the paper itself, and other auxiliary additives such as hydration resistance agent, lubricant, dispersant and defoaming agent also have a slight impact. Some organic monomers are easy to escape and produce slight odor during UV irradiation and high-temperature drying.

2. the main factors contributing to the non environmental odor of cigarette labels are inks and solvents.

the inks used in gravure printing are volatile dry inks, and the connecting materials in the inks are composed of resins and solvents. During the evaporation and drying process of Shantou ink, if the solvent is not volatilized completely, some solvents will remain in the ink layer to produce odor

(1) selection of solvent

● selection of solvent suitable for environmental protection

the world famous tobacco group has clear requirements for "cigarette label solvent residue limit". Specify in detail the volatile substances strictly prohibited in the gravure printing products of the factory. The allowable amount of volatile substances is also limited and variable, and the total amount per square meter is clearly specified. These advanced technical standards undoubtedly point out the way for our choice in cigarette label printing

● select the solvent with appropriate volatilization rate

similar solvents. The lower the boiling point, the faster the volatilization rate. However, the volatilization rate of different solvents with the same boiling point may not be close. Therefore, when setting the process, the selection of solvent needs to be very careful

(2) main factors affecting solvent volatilization

the volatilization rate of solvent is not only related to its own volatilization rate, but also affected by resin and pigment. Generally speaking, the easier the resin dissolves in the solvent, the slower the solvent escapes; The resin with high melting point has low solubility and the solvent is easy to volatilize. Therefore, the melting point of the resin used for high-speed gravure printing ink should not be lower than 150 ℃. However, if the melting point of the resin is too high and the ability to dissolve in the solvent is too low, it is easy to cause other problems

the surface properties and concentration of pigments also affect the volatilization of solvents. The pigment particles are fine and the density is small, and the solvent volatilizes less per unit area and unit time

at the same time, the volatilization rate of the solvent is also related to the external vapor pressure, temperature and air volume. In general, the greater the external vapor pressure, the higher the temperature, and the greater the air volume, the faster the solvent volatilizes

3. measures to reduce product odor

at present, in the process of intaglio cigarette label printing, we can adopt the following measures to improve:

(1) select environmental friendly raw materials. Among similar products, paper with high quality, relatively environmental protection and low odor (such as paper coated with pure virgin wood pulp or acrylic emulsion) and ink and solvent with low toxicity, low odor and not easy to retain odor are selected for production (such as environmentally friendly alcohol ink or water-based ink)

(2) the product shall be designed to avoid influence. In the design of new cigarette label graphics and text, the technology of large area ink lamination should be used as little as possible; Try to avoid using materials that can easily increase the smell of prints

(3) formulate a reasonable gravure printing process. Adjust and improve the printing process at any time according to the temperature and humidity of different pictures and texts, different materials and different periods, so as to minimize the residual volatile organic components that are prone to produce odor in the printed products. For example, the matching of ink system and the proportion of solvent used; The relationship between appropriate drying temperature, circulating air volume and machine speed; Formulate reasonable printing color sequence to accelerate solvent volatilization; Select the correct packaging form, etc

Qingdao limadon company attaches great importance to the smell of cigarette labels. Since the beginning of business, the imported base ink with high-quality alcohol soluble system has been used to print cigarette labels by means of self mixing ink

as Amcor group, the foreign shareholder of the company, is the largest cigarette label printing enterprise in the world, since 1997, according to the requirements of Amcor group, the company has stopped using any solvent that European and American countries require to be prohibited during cigarette label printing. At present, the solvents used by the company are absolute ethanol, ethyl acetate and n-Propyl Acetate. The solvent release of the ink is good, and its purity is more than 99.5%. Among them, n-Propyl Acetate is an imported product, which is expensive but has a small odor. It is a low toxic solvent and is the first choice for foreign gravure cigarette label manufacturers. It can completely avoid the residue of aromatic solvents in the carbon graphite anode materials for 10000t lithium-ion batteries with a total investment of 349million yuan. However, it is rarely used by domestic manufacturers

Qingdao limatun Co., Ltd. is also the first printing enterprise in China to use water-based Guangshan. As early as 1997, it has been used in small hard boxes and strip boxes. Since 2000, it has solved the curling and drying problems on flexible packaging through technical research, and began to be used on flexible packaging Jiong label. During the printing process of gravure cigarette labels, the company organized the production in strict accordance with the requirements of big tobacco companies in Europe and the United States on "limitation of solvent residue in gravure cigarette labels" to make your change laboratory machine give full play to its working effect, and ensured that the solvents in various inks in the printing process could be fully released

rely on technological innovation to improve coping ability

in the process of cigarette label processing, gravure printing technology has its unique advantages, but it also has significant limitations, which is an indisputable fact. It is suitable for long-term products, but not for multi variety and small batch orders; Suitable for conventional ink and metal ink printing, but not suitable for large particle size ink printing. Therefore, it is an important way to broaden the advantages of gravure printing by increasing the applicability of 10 large plastic markets to materials. In recent years, we have closely followed the steps of tobacco integration, and made some modest cuts as a whole. We have seized the favorable opportunity to realize large-scale production by focusing on brands and increasing the output of a single brand. Relying on technological innovation, we have made great efforts to improve the production efficiency of cigarette labels while expanding the adaptability of gravure printing, and actively responded to the development trend of cigarette packaging

(top) (middle) (bottom)

information source: packaging Report

Copyright © 2011 JIN SHI