Parameters of corrugated boxes

Parameters of corrugated boxes involve many aspects, including size, weight, strength, environmental adaptability, etc. The following is a detailed analysis of these parameters:

Dimension parameters

The dimensions of corrugated boxes are usually divided into three forms: external dimensions, manufacturing dimensions and internal dimensions. These dimensions jointly determine the volume and applicability of the box.

Definition: The volume measured from the outside of the corrugated box.

Application: Generally used as the basis for calculating freight and as a mark on the outside of the box.

Definition: The distance from the surface to the surface measured from the inside of the corrugated box after support molding.

Determination basis: Determined according to the volume of the contents, the inner dimensions are usually slightly larger than the volume of the contents to ensure that the items can be safely placed.

Definition: The production process dimensions converted according to the inner dimensions of the box.

Application: Generally, production operations are carried out by placing orders and adjusting the pressing line according to the manufacturing dimensions. The manufacturing dimensions are relatively flexible and will change at any time according to different corrugated board thicknesses, pressing line molding equipment, and molding processes.

In addition, there are some commonly used standard sizes for corrugated boxes, such as No. 1 to No. 12 corrugated packaging boxes, each size is suitable for different types of commodity transportation packaging.

Weight parameters

The weight parameters of corrugated boxes mainly include paper weight and corrugated cardboard weight.

Definition: Calculated in grams per square meter.

Common specifications: 70g/m², 80g/m², 90g/m², 100g/m², 120g/m², etc. The weight of paper will affect the thickness, hardness and load-bearing capacity of corrugated cardboard.

Definition: Also calculated in grams per square meter.

Common specifications: 90g/m², 100g/m², 110g/m², 120g/m², etc. The weight of corrugated cardboard will affect the hardness, compressive strength and weight of the carton.

Strength parameters

The strength parameters of corrugated boxes are crucial to protecting goods and ensuring transportation safety.

Definition: In the corrugated direction, the vertical uniformly increasing force that a corrugated board of a certain width can withstand per unit length.

Test method: Use a special compression tester for testing.

Definition: The maximum vertical pressure that a carton can withstand.

Influencing factors: It is related to the length, width, height ratio of the carton, the corrugated flute type, the thickness of the cardboard and other factors. The compressive strength test value is directly related to the ratio of the length, width and height of the carton. The higher the height, the smaller the compression resistance; the larger the length*width bottom area, the greater the compression resistance.

Definition: The force required to separate the cardboard face paper and the corrugated paper per unit length.

Industry standard: It is uniformly stipulated to be greater than 588 N/m flute.

Environmental adaptability parameters

   The storage environment of corrugated boxes has a significant impact on their quality and use effect.

General cartons: Usually stored at room temperature (20-25 degrees Celsius), and the relative humidity is controlled at around 45-55%.

Special purpose cartons (such as food, pharmaceuticals, and electronic product cartons):

The humidity requirements are more stringent, and the humidity needs to be controlled according to the storage conditions of the specific products.

Most cartons: can be stored at room temperature.

Special purpose cartons (such as food, pharmaceuticals, and electronic product cartons): There are also specific requirements for temperature to ensure that the product is not damaged.

In summary, the parameters of corrugated boxes involve multiple aspects such as size, weight, strength, and environmental adaptability. The reasonable selection and control of these parameters are of great significance to ensure the quality of cartons and protect the safe transportation of goods.