The corrugated cardboard is formed by bonding paper, paper, core paper and corrugated paper processed into corrugated corrugations. According to the requirements of commodity packaging, corrugated board can be processed into single-sided corrugated cardboard, three-layer corrugated cardboard, five-layer, seven-layer, and eleven-layer corrugated cardboard (Fig. 1, Fig. 2, Fig. 3). Single-faced corrugated cardboard is generally used as a protective layer for packaging of goods or to make lightweight cagging and backing plates to protect products from vibration or collision during storage and transportation. Three-layer and five-layer corrugated cardboard are used in making corrugated cardboard boxes. Used by the party. Many goods are packaged in three- or five-layer corrugated paperboards. On the contrary, they are beautifully packaged and printed on the surface of corrugated cartons or corrugated boxes. They not only protect the internal merchandise but also promote and beautify them. Internal merchandise. At present, many corrugated cartons or corrugated cartons made from three or five-layer corrugated cardboard have been sold directly to the sales counter and become sales packaging. Seven or eleven-layer corrugated paperboards are mainly used for making electrical boxes, flue-cured tobacco, furniture, motorcycles, and large household appliances. In a specific product, this corrugated cardboard combination can be used to make the inner and outer casings, which is convenient for production and is convenient for the packaging, storage and transportation of goods. In recent years, according to the needs of environmental protection and the requirements of relevant national policies, the packaging of corrugated paperboard products has gradually replaced wooden packaging.
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