Kraft cardboard is a common industrial paper material, usually used to make packaging boxes, albums, folders, cards and other fields.
Detection performance
It needs to detect the following main properties:
Strength: Kraft cardboard needs to have high strength to ensure that it is not easy to be damaged or broken during the process of making packaging boxes and file folders. The detection of strength can be carried out by measuring the tensile strength, flexural strength, compressive strength and other indicators of paper.
Thickness and uniformity: The thickness and uniformity of kraft cardboard will directly affect the dimensional stability and appearance quality of the product. The detection of thickness and uniformity can be carried out by measuring indicators such as paper thickness, density and basis weight.
Smoothness: Kraft cardboard needs to have a certain smoothness to ensure the printing effect and quality of printed matter. The detection of smoothness can be carried out by measuring the glossiness, smoothness, roughness and other indicators of the paper surface.
Hardness: Kraft cardboard needs to have a certain hardness to ensure that it is not easily deformed or broken during the process of making albums and cards. The detection of hardness can be carried out by measuring the stiffness, bending, elasticity and other indicators of the paper.
Environmental protection: Kraft cardboard needs to meet environmental protection standards, contain no harmful substances, and have no pollution to the environment. The detection of environmental protection can be carried out by measuring indicators such as volatile organic compounds, heavy metals, chloride ions and fluorescent whitening agents of paper.
Scope of application: Kraft cardboard is used in a wide range, involving the production of packaging boxes, albums, folders, cards and other fields, and needs to be tested and evaluated according to specific application requirements. The detection of the scope of application can be carried out by measuring the applicable environment of the paper, the applicable product type and the applicable processing technology and other indicators.
Packaging performance: The packaging performance of kraft cardboard is one of its important performance indicators, including packaging tightness, dimensional stability and stacking stability. The detection of packaging performance can be carried out by measuring the thickness, toughness and surface smoothness of packaging paper.
Printability: Kraft cardboard needs to have a certain printability to ensure the printing effect and quality of printed materials such as packaging boxes and albums. The test of printability can be carried out by measuring the printing suitability, printing quality and printing speed of the paper.
Surface coating: Kraft linerboard usually requires surface coating to increase its surface hardness, wear resistance and printing quality. The performance test of the surface coating can be carried out by measuring the uniformity, hardness, wear resistance, adhesion and other indicators of the coating.
Slidability: Kraft cardboard needs to have a certain degree of slidability to ensure smooth operation during the production process of packaging boxes and file folders. The detection of slipperiness can be carried out by measuring the surface smoothness, surface softness and friction coefficient of paper and other indicators.
Water resistance: Kraft linerboard needs to have a certain degree of water resistance to prevent it from deforming or fading in a humid environment. The detection of water resistance can be carried out by measuring the tensile strength, toughness and other indicators of paper in a humid environment.
The above performance indicators are the key content of kraft paperboard detection, and different use requirements and standards will also affect the paper detection standards and methods.
