Type A corrugated and type B corrugated boxes are generally used for transporting outer packaging boxes, and beer boxes are generally made of B. E楞 is used as a single-piece box with certain aesthetic requirements and appropriate weight contents. F-shaped corrugated and G-shaped corrugated whip are called micro-corrugated, which is a very thin corrugated, used as food for hamburgers, cream fillings, etc. Disposable packaging containers, or used as micro-electric products such as digital cameras, portable stereos, and packaging for refrigerated goods.
Corrugated paperboard began in the late 18th century. At the beginning of the 19th century, due to its light weight and low price, it was widely used, easy to manufacture, and can be recycled or even reused, which made its application significantly increase. By the beginning of the 20th century, it has been widely popularized, promoted and applied for packaging and packaging of various commodities. Since packaging containers made of corrugated cardboard have unique properties and advantages for beautifying and protecting the interior goods, they have achieved great success in competition with various packaging materials. It has become one of the main materials for making packaging containers that have been used up to now and are rapidly developing.
Corrugated cardboard is made by bonding paper, paper, core paper and corrugated paper processed into corrugated corrugated. According to the demand of commodity packaging, corrugated board can be processed into single-faced corrugated board, three-layer corrugated board, five-layer, seven-layer, eleven-layer corrugated board (Figure 1, Figure 2, Figure 3). Single-faced corrugated cardboard is generally used as a protective layer for the packaging of goods or to make a lightweight card or pad to protect the goods from vibration or impact during storage.
Three-layer and five-layer corrugated cardboard are used in corrugated boxes. common. The packaging of many goods is simply and beautifully packaged in three or five layers of corrugated cardboard. The colorful graphics and images are printed on the surface of corrugated boxes or corrugated boxes, which not only protects the inner goods, but also promotes and beautifies the inner commodity. Many corrugated boxes or corrugated boxes made of three- or five-layer corrugated cardboard have been directly on the sales counter and become sales packaging.
Seven-layer or eleven-layer corrugated cardboard is mainly used for making boxes for electromechanical, flue-cured tobacco, furniture, motorcycles, and large household appliances. In a specific product, the corrugated cardboard combination can be used to make the inner and outer casings, which is convenient for production and convenient for the storage, storage and transportation of the goods. With the needs of environmental protection and the requirements of relevant national policies, the packaging of such corrugated cardboard products has gradually replaced the trend of wooden packaging.