Cardboard material classification: Cardboard material is classified by weight per unit area, There are mainly the following kinds of cardboard materials :K paper :250g/m² A paper :175g/m² B paper :125g/m² 7 paper :200g/m² 8 paper :260g/m² C paper :127g/m² Core paper: Basic 100g/m² large machine 105-110g/m² Reinforced core paper: + Paper 115g/m² carton commonly has three layers, five layers, seven layers are used less, each layer is divided into inner paper, corrugated paper, core paper, face paper, inside and face paper have tea board paper, kraft paper, core paper with corrugated paper, various paper color and feel are different, different manufacturers of paper (color, feel) is not the same, The national standard for corrugated boxes is GB6543-86" Corrugated boxes ".

Corrugated box selection principle

In the selection of corrugated boxes, we must first take into account the nature of the product, weight, storage and transportation conditions and circulation environment, followed by the design of shock-proof packaging principles and corrugated box design methods, in addition to follow the relevant standards, such as export commodity packaging to meet international standards or foreign requirements, and to go through the relevant tests, Therefore, the selection of corrugated box packaging should generally pay attention to the following two points.

The corrugated models of corrugated board are divided into four categories: A,B,C,E according to the corrugated height, and the mechanical properties of different corrugated boards are also different. The plane pressure of type A corrugated board is the highest, and the compressive strength is larger, while type B is the opposite, and the plane pressure, vertical pressure, parallel pressure and buffer of type C are better. The thickness between the corrugated cardboard, type A is the largest, type C followed, type B again, and type E is the smallest, because the thickness of the small cardboard processing bending is easier, therefore, B-shaped corrugated paper is widely used for packaging boxes with low pressure strength requirements. According to the different mechanical properties of corrugated cardboard, single-sided corrugated boxes with A or C type is good, double-sided corrugated boxes with A,B or B,C type combination is appropriate, close to the outer surface with B type, can play an impact resistance. A,B type or B, C type combined, can improve the physical and mechanical properties of the carton; From the printability comparison, both type B and type C are conducive to printing.

(2) The shape of the corrugated box Under the premise of ensuring the quality of the carton, the processing materials and packaging costs of the carton should be saved as much as possible. For example, the carton with the same volume is the most material saving when the length: width: height is 2:1:2, and the most material cost when the ratio is 1:1:1. Therefore, the use of square boxes should be avoided as far as possible. It is also necessary to take into account the utilization rate of the product to the box volume, the utilization rate of the box to the volume of the truck and the train car, and the stability of the stacking when warehousing and pumping.

What is the direct relationship between the break resistance and the pressure resistance of the carton

Pressure resistance generally refers to static force, in addition to static pressure also includes dynamic impact force. The former can be determined by the maximum accumulation experiment, and the latter is generally selected by the degree of natural fall at a certain height and accidental impact in the process of handling and transportation turbulence.

What is the conceptual difference between carton puncture strength and burst resistance

The penetration strength refers to the maximum power that the carton can withstand against sudden impact; The breaking strength refers to the internal resistance to local extrusion. The standard of domestic light industry has canceled the puncture strength index, but the export carton still has requirements.

Technical characteristics of carton packaging machinery

※ Using vertical storage cardboard, and can be replenished at any time, without stopping;

※ Suitable for the same carton size packaging at the same time, if you need to change the carton size, manually adjust the use (only 1~2 minutes);

※ The machine adopts rational design, suction box, molding, back cover are automatically processed in one go;

※ The performance of the machine is precise and durable, no vibration during operation, stable operation and long life;

※ The machine adopts PLC+ man-machine interface display control, high performance, high speed, high efficiency;

※ The folding length of the sealing tape at both ends of the carton is 50~70mm, can be customized 80, 100MM;

※ Can be used alone or with automatic packaging line.