Cardboard box is the most commonly used packaging product, according to different materials, there are corrugated boxes, single-layer cardboard boxes, etc., with various specifications and models.
Cartons commonly used are three-layer, five-layer, seven-layer use less, and each layer is divided into lining paper, corrugated paper, core paper, surface paper, lining, surface paper with tea board paper, kraft paper, core paper with corrugated paper. A variety of paper color and feel are different, different manufacturers consume paper (color, feel) is also different.
According to the paper quality, good to poor, continent's statement is divided into: K, A, B, C. Mainly from the hand to feel the thickness, hardness, lubricity of the paper, directly from the cardboard manufacturer to do the workmanship and extraction resolution. Moisture pumping too dry will be too brittle, not easy to die-cut easy to break. It is also divided into single pit, double pit, three pit, enhanced chip, the final resolution of the packaging carton material consists of face paper and core paper.
Second, according to the thickness of the pit carton can be divided into four kinds:
1, young pit box, also known as E pit box, written as A9A, A9B, B9B, etc., which is the thinnest carton, is generally carton. A total of 3 layers of paper. Total thickness of 1.5-2.0 MM
2, single pit box, written as K3K, K3A, A3A, A3B, B3B, etc.. Commonly used for the inner box. A total of 3 layers of paper. Total thickness of 2.5MM.
3, double pit box, which is usually used most of the carton. Written as K = K, K = A, A = A, A = B, A = C, B = B, etc.. Total 5 layers of paper. The total thickness of 5MM.
4, three pit box, written in A three A, A three B, B three B, which is the thickest carton in the carton. It is commonly used for packaging fragile and heavy items, such as clothing / hardware, etc. The unit price is also the highest.
Corrugated cardboard is made of face paper, lining paper, core paper and corrugated paper processed into waveform corrugated paper through bonding. According to the needs of commodity Cardboard Box, corrugated board can be processed into single-sided corrugated board, three-layer corrugated board, five-layer, seven-layer, eleven-layer corrugated board, etc.
Corrugated board with different corrugated shapes has different functions. Even with the same quality of paper and liner, the corrugated board has different properties due to the difference in flute shape.
A-flute corrugated board has better cushioning and is more flexible than A-flute. However, the stiffness and impact resistance are better than those of A-flute. B-flute has a high density of arrangement, which makes the corrugated cardboard smooth on the outside and has a high bearing pressure, making it suitable for printing.
The four types of Cardboard Box used today are A flute, C flute, B flute and E flute, and their heights are A>C>B>E. Now the domestic use of paper chapter has nine dragon paper, with the quality of imported paper, but the price is relatively cheap.