Coating Opacity Test Cardboard

The coating hiding power test card is a standard cardboard printed with black and white grids. It is used to assess the hiding effect by observing the disappearance of the black and white grids after applying the liquid to be tested. The principle is based on the difference in light reflection on dark substrates. It is widely used in industries such as paints and inks for rapid inspection of product hiding performance, guiding adjustments in production formulations.
Selection
When selecting a test card for evaluating the hiding power of electroplated coatings, ensure that the substrate matches the sample under test. Pay attention to the thickness and flatness of the card, and make sure the boundaries between the black and white grids are clear and sharp. Consider the temperature and humidity range of the test environment, verify the product execution standard number, and check the liquid absorption and anti-permeability properties of the coated surface of the card.

Terms

Standards

Instruments

Laminating-free black and white half design, size 98 * 152mm, Encasement specification 100 sheets/bag, suitable for Coating inks film hiding power performance detection experiment.

$ 89.00

The black and white contrast design can intuitively evaluate the covering effect, in line with the D4941 standard specification, the size is 140x254mm for easy operation, the matching Applicator Rod can obtain uniform coating, support levelling sag and other tests.

$ 275.00

Black and white half design, size 98x152mm, ASTM standard, can accurately measure Coating hiding power, support transparent film and plastic pRoducts hiding ratio detection.

$ 267.00

Black and white half design is convenient for hiding power comparison, 140 * 250mm standard size is suitable for experimental requirements, surface Laminating enhances durability, and 100 sheets per pack meets batch testing.

$ 90.00

Using 140 * 250mm black and white half design, no Laminating surface to ensure detection accuracy, suitable for hiding power performance testing, Encasement specification of 100 sheets/pack for experimental use.

$ 90.00

Using blue light diffuse reflection factor R457 measurement technology, Precision ≤ 0.5%, can simultaneously analyze the content of Fluorescent Whitening Agent and determine Opacity, transparency and other Optical inspection paraMeters, support thermal printing output.

$ 1259.00

Pure white paper surface sealed, size 194x286mm, ASTM standard, support hiding power measurement and levelling sag test, matching Applicator Rod can obtain uniform coating results.

$ 307.00

Measurement range 0-18mm, contact pressure 100kPa, contact area 200mm ², Indication Error 2.5μm, suitable for accurate measurement of paper and Cardboard thickness.

$ 517.00

It can measure the blue light diffuse reflection factor R457, analyze the fluorescent whitening agent, and print the results directly with a built-in micro-printer, repeatability error ≤ 0.1, support Opacity and light absorption coefficient measurement.

$ 1348.00

Force range 5~ 3000N, accuracy +/- 1%, support ring pressure, side pressure, gluing, flat pressure and other 6 tests, equipped with 5.0 Touchscreen and thermal printer, suitable for paper Cardboard strength detection.

$ 2300.00

Measurement range 0-20mm, accuracy 0.001mm, contact pressure 20 +/- 5kPa, suitable for paper, Cardboard and sheet material Film thickness detection, in line with a number of international standards.

$ 401.00

The black and white half design is used for easy hiding power comparison, the size is 194x260mm to meet the standard test requirements, and it meets the ASTM specifications to ensure the detection accuracy. It is suitable for the hiding ratio determination of various coatings and inks.

$ 315.00

Adopt pressure converter induction, capacity 50kg/cm ², oil feeding speed 175 +/- 5mL/min (Cardboard), automatically complete the pressurization and decompression operation, and automatically retain and print out the test results.

$ 1348.00

Using seven-inch color LCD screen display, Measurement range Cardboard 250-5600Kpa, chuck clamping method is pneumatic, modular integrated thermal printer and complete and detailed test data report.

$ 1663.00

The sampling length can reach 300mm, the sampling width error is +/- 0.1mm, and the notch parallelism is less than or equal to 0.1mm. It is suitable for accurate sampling of materials such as paper Cardboard.

$ 428.00

Articles

Spectrophotometer measures ink spectral reflectance and opacity.
This article introduces how to measure the hiding power of ink using a spectrophotometer. The instrument irradiates the ink sample, measures its reflectance within the visible light spectrum, and calculates the hiding power using the Kubelka-Munk model.
The combination of hiding power chart paper and a spectrophotometer enables the digital evaluation of hiding power.
This article introduces how to combine hiding power cards with spectrophotometers to achieve digital assessment of hiding power.
Technical Details of Measuring Paint Contrast Ratio Using Black-and-White Checkerboard Method with Hiding Power Card
This article introduces a method for measuring the hiding power of coatings using black and white checkerboard paper.
The Taber Abraser evaluates the wear resistance of coatings.
The Taber abrasion tester simulates surface wear of materials through rotational friction, used to evaluate the wear resistance of coatings. During testing, a grinding wheel is used to rub the specimen under a fixed load, and performance is quantified by measuring mass loss or thickness changes after a specified number of cycles.
Application of Coating Thickness Gauges in Electroplating Thickness Detection
Coating thickness gauges are used to measure the thickness of electroplated layers, primarily employing the electromagnetic induction method for measuring non-magnetic coatings on magnetic substrates, or the eddy current method for measuring insulating coatings on non-magnetic metal substrates.
Eddy current thickness gauge measures metal coatings on non-conductive substrates.
The eddy current thickness gauge utilizes the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil to induce eddy currents in the metal coating, thereby measuring thickness based on changes in coil impedance.
Reflectometer for measuring the hiding power of colored paint coatings
This article introduces the method of using a reflectometer to measure the hiding power of colored paint coatings. Hiding power refers to the ability of a coating to conceal differences in the underlying color. Traditional methods relying on visual judgment are prone to subjective influences, while instrumental measurement offers greater objectivity and accuracy.
Coulometric Method Coating Thickness Gauge for Non-Destructive Measurement of Precious Metal Coatings
The coulometric coating thickness gauge measures the thickness by calculating the amount of electricity required to dissolve the precious metal coating through the principle of electrolytic dissolution. This method is non-destructive to the overall sample, only forming tiny electrolytic spots.
Application of Electrolytic Thickness Tester in Quality Control of Precision Electroplating Layers
The electrolytic thickness gauge measures coating thickness through the principle of electrochemical dissolution, calculating based on Faraday's law, offering high accuracy and independence from calibration.
Opacity tester evaluates the covering power of coatings.
The hiding power tester is a professional instrument used to evaluate the covering ability of coatings. It quantifies the hiding effect by measuring the reflectance ratio (contrast ratio) of the coating film on black and white substrates.
Applicable Scenarios for Neutral Salt Spray and Copper-Accelerated Acetic Acid Salt Spray Tests
Neutral salt spray testing and copper-accelerated acetic acid salt spray testing are both accelerated methods used to evaluate the corrosion resistance of materials, simulating saline environments to predict long-term performance. The neutral salt spray test uses a neutral sodium chloride solution, which causes relatively mild corrosion and is suitable for general metals and coatings, such as automotive parts.
Black-and-white checkerboard and reflectometer for measuring pigment hiding power
This article introduces two methods for measuring the hiding power of pigments: the black-and-white checkerboard method and the reflectometer method.
Covering Power Evaluation—Mass per Unit Area Method vs. Reflectance Comparison Method
This article primarily discusses two common methods for evaluating hiding power in industries such as coatings and inks: the mass per unit area method and the reflectance contrast method.
The role of black-and-white test paper in contrast ratio measurement
Black-and-white test paper plays a key role in determining the contrast ratio of coating materials. The contrast ratio is an important indicator of hiding power, calculated by comparing the reflectance of the coating on black and white substrates.
Hiding power measurement: Equivalence of mass per unit area method and reflectance contrast method.
Covering power is a key indicator for evaluating the optical performance of coating materials such as paints, inks, and pigments, reflecting the material's ability to conceal the color of the substrate. Accurate determination of covering power is crucial in industrial quality control and research and development.