China's Packaging and Printing Industry's "Tomorrow" (Part Two)

High production efficiency Because the preprinted printing method uses web gravure printing machine, the printing speed can reach 150-300 meters per minute, the gravure printing machine can currently reach 17X1.7 meters printing in China, the most foreign gravure printing machine With a web width of 3.4 meters, it can print 5-12 colors and special inks for gold and silver inks. The traditional large-format color offset printing format is generally 1.2X0.9 meters and the printing format is narrow. Preprinting can produce 120,000 cartons in 8 hours of work time, whereas traditional methods can only produce 2-3 cartons.
High quality ink prints can be obtained Because gravure inks are larger than other printing methods, inks are more saturated; gravure multi-color printing is fully dried, the prints are bright and solid, plus gravure Better overprint accuracy, can also be printed, glazing once completed, so you can get very high quality ink printing.
For large batches of long-lived low-cost traditional printing offset printing rate is only a few square India, while the gravure printing force of up to 300-400 square printing, can save a lot of man-hours, so the large volume long gravure printing Live production costs more than offset paper.
The corrugated paper has high strength because the preprinted corrugated cartons are produced on the production line. During the production of corrugated paperboards, there is a certain amount of heat-forming time. The corrugated paperboard produced has a flat compressive strength of 20-50% higher than the conventional ones. The strength is 10-30% higher than that of the conventional ones. The cartons made of them have 10-30% higher compressive strength. In this way, low-gram base paper can be used to produce high-strength cartons. This is the color box factory dream. In addition, it can also avoid the appearance of uneven glue, carton “beads”, box board warping, etc. when the carton is produced by the noodle machine.
In a word, the carton produced by using preprinting has better quality, higher strength and lower cost than the carton produced in the traditional way, saving about 5-10% per carton. It is expected that preprinting will become a hot spot for color box factories.
Green packaging, green materials With the advancement of science and technology, people's living standards and quality have increased, and the requirements for the environment have become higher and higher. In response, the country has proposed a series of environmental protection policies to achieve green mountains, green water and blue sky. In the global environment and sustainable development, packaging waste is an important issue facing all countries. For this reason, many cities in China prohibit the use of disposable foam polystyrene snack boxes, which is a typical example. In the new year, the state will impose stricter requirements and have entered a strict law enforcement stage, requiring the use of "green packaging." The so-called “green packaging” refers to packaging that is harmless to the ecological environment and human health, can be recycled, recycled, and can promote sustainable development. As a result, developed countries in the world have determined that packaging should comply with the “4R+1D” principle, ie, low consumption. , develop green materials, reuse, recycle and degrade, people will pay more attention in the new year:
The use of degradable materials to accelerate the speed of degradable materials refers to the performance of a specific time caused by the loss of the specific circumstances of the other changes in the structure of a material. Degradable plastic is a new product with environmental protection in plastics and is a new material in the field of materials.
In the global environment and sustainable development, plastic packaging waste is an important issue facing all countries. Degradable plastics not only have the functions and characteristics of traditional plastics, but also can be split and degraded in the natural environment through the action of ultraviolet rays in the sunlight or microorganisms in the soil and water after the service life is completed, and finally reenter the non-toxic form. In the ecological environment, return to nature. Therefore, environmentally friendly degradable plastic packaging will be actively promoted.
The promotion and application of aluminum transfer paper vacuum aluminum transfer cardboard, commonly known as transfer gold (or silver) paper, traditional gold (silver) cardboard generally use aluminum foil or aluminum film and cardboard composite, and then colored. Compared with traditional gold (silver) cardboard, vacuum aluminum coated transfer paperboard has the following advantages:
· The raw and auxiliary materials used in the production of aluminized paper are odorless and non-toxic, comply with the requirements of food hygiene (according to the US FDA standards), and can be widely used in the fineness of products such as tobacco, wine, bottle paste, tea, food, cosmetics and handicrafts. package.
·Good finish, high smoothness, bright color, bright appearance, strong visual impact, can well improve the product packaging grade.
·Excellent barrier properties, moisture-proof and anti-oxidation effects.
Excellent printing performance and machining performance, suitable for gravure, offset, flexographic, screen printing, indentation, die cutting, even embossing, holographic laser anti-counterfeiting and so on.
· Degradable, good recovery, easy handling and recycling, in line with environmental protection requirements, is an essential packaging printing material for export products. However, the aluminum foil composite and aluminized film composite papers that are widely used in the market today cannot be recycled as aluminum products or recycled as paper. Therefore, the aluminum-plated transfer paperboard can be widely used in the exquisite packaging of tobacco, wine, bottle stickers, tea, food, cosmetics, handicrafts and other products and is being used more and more widely.
A large number of water-based inks use more than 50% of the solvent-based ink is a solvent, if the solvent is a volatile benzene, esters, ketones, solvents in these inks are volatile during printing and drying. It causes great pollution to the environment and has a great impact on the physical staff. The water-based ink accounts for about 50% of the water, no toxic gases are evaporated when the printing is dry, in line with national environmental protection requirements. At present, water-based inks are widely used for flexo and gravure printing, and the prints are brightly colored, with high abrasion resistance and heat resistance.
In addition, there are a large number of UV inks, UV Varnish and printing ink transfer, which are conducive to environmental protection and benefit the physical and mental health of employees.
The 16th National Party Congress put forward the goal of building a well-to-do society in an all-round way. With the development of economy, the continuous improvement of the living standards, quality of life and demand of 1.3 billion Chinese people will help promote the development of China's packaging and printing industry and promote China's move from a packaging power to a packaging powerhouse; in 2003 and even this year In 10 and 20 years, China's packaging and printing industry will rise like a red sun rising early in the morning.