Carton: It is the most widely used packaging product. There are corrugated boxes and single-layer cardboard boxes according to different materials. There are various specifications and models.
There are three layers and five layers commonly used in cartons. The seven layers are used less. The layers are divided into inner paper, corrugated paper, core paper, facial tissue, and paper, kraft paper, corrugated paper for core paper, and various paper. The color and feel are different. The paper (color, feel) produced by different manufacturers is different.
A wrap or article that is commonly used as a commodity protects the outer layer. The size of the carton changes depending on the size of the product. The carton usually has "careful and light", "weakness", "upward", "stacking limit", "afraid of sun", "moisture proof", "quality safety", "no roll" "Do not trample" "Attention to fire", "fragile items", "greening environment", "fear of heat", "food", "anti-odor" and other patterns or text prompts to remind users to protect the contents from damage.
As an indispensable part of modern logistics, packaging carton bears the important responsibility of packaging, protecting products and aesthetics. The physical performance index of packaging carton becomes the basis for its quality evaluation. Stable working environment conditions ensure the accuracy and reliability of the test data, and many years of senior engineers engaged in carton testing, testing and analysis of the package, providing fair and scientific test data for the box supplier and the box user. . TTS (one pass test) also provides supplier material screening, bid evaluation and other projects for many well-known enterprises.
Corrugated cardboard is made by bonding paper, backing paper, core paper and corrugated paper processed into corrugated corrugated. According to the requirements of commodity packaging, corrugated cardboard can be processed into single-faced corrugated cardboard, three-layer corrugated cardboard, five-layer, seven-layer, eleven-layer corrugated paperboard.
Corrugated cardboard of different corrugated shapes has different functions as corrugated cardboard. Even with the same quality of face paper and backing paper, the performance of the corrugated board formed is different due to the difference in the shape of the enamel. There are four types of corrugated shapes commonly used in the world, which are A-type C, C-type , B-type E and E-type . Their technical indicators and requirements are shown in Table 1. Corrugated cardboard made of type A enamel has good cushioning property and a certain elasticity, and type C is second to A. However, the stiffness and impact resistance are better than that of the A-type crucible; the B-type crucible has a high density of arrangement, the surface of the corrugated cardboard produced is flat, and the bearing pressure is high, which is suitable for printing; the E-shaped crucible is thin and dense, and presents its just strength.
The difference between container and non-container is mainly in the outer diameter and is closely related to the type of corrugated. The relationship between the inner diameter specifications, manufacturing specifications, and outer diameter specifications of the carton will be detailed below through the following table:
The manufacturing dimensions of the carton are the size of the blank when the carton is made. The manufacturing dimensions are based on the line of pressure on the unrolled box blank. The indentation roller on the slitting machine presses a groove at the pressing line position, and the pressing line is the center line of the groove. The distance between the two lines is the manufacturing size. Converting the manufacturing dimensions to the inner and outer diameter dimensions can be achieved by Table 2, but they also have their own measurement methods.
Corrugated boxes have a single fight and a double fight in the manufacturing process.
Single-spinning one-page forming box is generally used for cartons with smaller circumferences; double-pieces are also called two-page boxes. Some cartons are too large in circumference, and have to use two pieces of box blanks to piece together a carton, but sometimes the carton factory uses the production. The remaining material cut in the process will also be pieced together with two pieces of cardboard that are not too large in size, and sometimes even four pieces. The two-page box has one more joint than the one-page box, so there are some subtle differences in the area calculation between the two.