There are many types of paperboard, which are widely used in commodity packaging and also for special needs in various fields of industry. Therefore, the production of cardboard not only affects the packaging and transportation of commodities, but also affects the development of the electrical industry, construction industry, automobile manufacturing industry and other industries. In recent years, China's cardboard demand has increased rapidly and production has developed rapidly, and the proportion of cardboard in the total amount of paper is also increasing. And the demand will increase with the development of the national economy.
Compared with plastic, wood, metal, glass and other packaging materials, packaging cardboard has the following characteristics:
Low cost, save wood, waste paper box can be recycled, less pollution. Compared with wood only, the quality of wood used for making wooden boards is very strict. Generally, high-quality wood is required, and the demand for wood raw materials for making paper boxes is low. Both sapwood waste can be used, and hardwood and straw pulp , Ground wood pulp, waste paper pulp, etc. can be used, so the cost of cartons is much lower than wooden boxes. Moreover, it is difficult to process and recycle the wooden box, and the carton is easy, which is convenient for continuous production.
The carton is light-weight, easy to ship, reduce the transportation load, and the freight is low.
The carton is easy to print, beautifully decorated, easy to promote goods and promote sales.
Cardboard can be specially processed (such as composite) to make the carton with various special properties to meet the needs of various packaging.
Due to the continuous improvement of cardboard production technology, heavy-duty and large-scale machinery can also be packed in cartons, and even live seafood can be transported for long distances in specially treated cartons, and can also be made into special cartons that are moisture-proof, germ-proof, UV-proof, and infrared. So all over the world attaches great importance to the production of cardboard.
The production of cardboard has the following development directions:
Lightweight paperboard-towards low weight, high strength, thin paperboard. Under the premise of ensuring or even increasing the strength, the quantitative of packaging cardboard gradually decreases. Due to the development of new and heavy packaging boxes, cardboard must have better strength and structure. Micro-corrugated corrugated paperboard with high strength and good printing performance and honeycomb paperboard with light weight, high strength, high rigidity, cushioning, thermal insulation and thermal insulation performance will be greatly developed, so new pulp with high strength is needed.
Production of paperboard from recycled pulp. Due to the increased awareness of environmental protection and the shortage of global resources, the application of recycled pulp in production (especially in the production of high-end paper) will be greatly developed.
Improve the appearance quality, surface performance and printing performance of cardboard, so that medium and high-end cardboard can adapt to the requirements of printing a variety of printing methods (including flexo printing, offset printing, gravure printing) and a variety of inks (including water-soluble inks), And diversify product varieties to meet the requirements of different users.
Using chemical additives and composite technology to produce packaging board to meet the needs of special purposes. In short, the development direction of paperboard production is low basis weight, high strength and high surface quality.
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