Double grey paper performance testing items and equipment
Double grey paper is a kind of commonly used packaging paper. It is a composite board made of two layers of grey paper. It has high strength and rigidity, and is widely used in packaging, printing, making folders and other fields.

Detection performance
The performance test of double grey paper usually includes the following aspects:

Detection of base weight: The base weight per square meter is calculated by weighing the weight of a double-grey paper sample of a certain size. Precision electronic scales or balances are usually used for weighing.

Detection of thickness and uniformity: the thickness of double grey paper is measured by using manual or automatic thickness measuring instrument, and the uniformity is detected by laser measurement or machine measurement method. Manual thickness gauges usually use hand-held thickness measuring instruments, automatic thickness gauges usually use laser triangulation to measure thickness, and the method of detecting uniformity can be carried out using machine vision systems.

Strength testing: through the use of strength testing instruments, such as electronic tensile machine, multi-functional testing machine, etc., to measure the double gray paper tensile strength, compressive strength and other indicators.

Double grey paper performance testing items and equipment

Corrugated detection: through the use of corrugated altimeter or corrugated pressure tester and other instruments to detect the corrugated height and strength of double grey paper.

Packaging performance testing: through the use of packaging performance testing instruments, such as corrugated compression tester, corrugated bending tester, stacking tester, etc., to measure the compression strength, bending strength, stacking stability and other properties of the carton made of double grey paper.

Printability test: By using printing quality test instruments, such as printing accuracy tester, printing speed tester, ink adhesion tester, etc., to measure the printing quality of double gray paper, printing speed and ink adhesion and other properties.

Environmental protection testing: by using environmental testing instruments, such as volatile organic compounds tester, heavy metal tester, chloride ion tester, etc., to measure the content of volatile organic compounds, heavy metals, chloride ions and other harmful substances in double gray paper.

Tensile strength and elongation at break detection: by using a tensile testing machine to measure the double gray paper tensile strength and elongation at break.

Double grey paper performance testing items and equipment

The detection of moisture content: by using a moisture content tester to measure the moisture content in the double grey paper, in order to assess its quality.

Test of acidity and alkalinity: by using PH value tester or PH tester to test the acidity and alkalinity of double grey paper.

Water resistance test: through the use of water resistance tester to measure the water resistance of double grey paper.

Wear resistance test: by using the wear resistance tester to measure the wear resistance of the double grey paper.

Test of flexibility: By using a flexibility tester to measure the flexibility of double grey paper.

Testing methods and instruments
The specific detection methods and instruments of double grey paper are as follows:

Basic weight detection: Take a certain size of double grey paper sample, weigh its weight, calculate the basic weight per square meter. Precision electronic scales or balances are usually used for weighing.

Detection of thickness and uniformity: Use manual or automatic thickness measuring instrument to measure the thickness of double gray paper, and by laser measurement or machine measurement method to detect uniformity. Manual thickness gauges usually use hand-held thickness measuring instruments, automatic thickness gauges usually use laser triangulation to measure thickness, and the method of detecting uniformity can be carried out using machine vision systems.

Strength test: use double grey paper strength test instrument to measure its tensile strength, compressive strength and other indicators. Usually use electronic tensile machine, multi-function testing machine, rupture strength tester and other equipment for testing.

Double grey paper performance testing items and equipment

Corrugating test: use corrugating altimeter or corrugating pressure tester and other instruments to test the corrugating height and strength of double grey paper. These instruments usually use photoelectric sensors or laser sensors to measure.

Packaging performance test: Use packaging performance test instrument to measure the compression strength, bending strength, stacking stability and other properties of the carton made of double grey paper. Corrugated compression tester can measure the compression performance of corrugated cardboard, corrugated bending tester can measure the bending performance of corrugated cardboard, and the stacking tester can measure the stacking stability of corrugated boxes.

Printability test: Use printing quality test instrument to measure the printing quality of double gray paper, printing speed and ink adhesion and other properties. The printing precision tester can measure the printing quality, the printing speed tester can measure the printing speed, and the ink adhesion tester can measure the adhesion of ink and paper.

Environmental protection testing: use environmental testing instruments to measure the content of volatile organic compounds, heavy metals, chloride ions and other harmful substances in double gray paper.