Cell Instruments Co., Ltd.
Material Testing Solutions
Add to Cart
The COBB Testing Equipment is an essential tool for evaluating the water absorption strength of paper and paperboard surfaces. Specifically, the COBB-01 COBB Tester is designed to determine the water absorption characteristics of materials through the Cobb method. This testing equipment is particularly effective in sizing paper and assessing the water absorption capabilities of cardboard surfaces, making it a crucial asset for industries requiring precise moisture control.
The COBB Testing Equipment measures the water absorption capacity of paper or cardboard surfaces. The Cobb value, which is critical in evaluating material performance, represents the mass of water absorbed per unit area (expressed in grams per square meter, g/m²) under specific conditions and within a designated timeframe. Understanding this value is vital for ensuring the quality of printed materials, as water absorption can significantly influence print quality.
International standards outline specific testing times for the removal of excess water and the absorption process. The following table summarizes the recommended durations:
| Mark | Time to Remove Excess Water (S) | Time to Absorb Water (S) |
|---|---|---|
| cobb30 | 20 ± 1 | 30 ± 1 |
| cobb60 | 45 ± 1 | 60 ± 2 |
| cobb120 | 105 ± 2 | 120 ± 2 |
| cobb300 | 285 ± 2 | 300 ± 2 |
| cobb1800 | 1755-1815 | After removal, 15 ± 2 |
The COBB Testing Equipment is vital for industries that utilize paper and cardboard in their products. Understanding the Cobb value allows manufacturers to select the appropriate materials for printing, thus minimizing issues related to ink smudging or poor print quality. Moreover, this testing equipment serves as a quality control measure, ensuring that materials meet industry standards.
Material scientists and quality assurance teams utilize the data obtained from the COBB-01 COBB Tester to optimize the composition of paper and cardboard, tailoring these materials for specific applications based on their water absorption characteristics.
The COBB sample cutter is an integral component of the COBB Testing Equipment. This tool allows for swift and precise cutting of samples with a specified area of Ø125mm. As a stamping-type sampler, it is ideal for use in corrugated board production, research, quality supervision, and inspections. Accurate sampling is essential for ensuring that the subsequent tests yield valid results.
Before conducting a test with the COBB Testing Equipment, the sample must be weighed. One side of the sample is exposed to water for a specified duration. After this period, excess moisture is removed, and the sample is weighed again. The results are expressed as the increase in mass per unit area, measured in grams per square meter (g/m²). This process is fundamental in evaluating the water absorption capacity of porous materials, particularly in contexts where water absorption is critical.
The COBB Testing Equipment is commonly employed across various industries to measure the water absorption capacity of porous materials. Its relevance extends to:
By utilizing the COBB-01 COBB Tester, companies can maintain specific standards, enhancing product performance and ensuring compliance with industry regulations.
Investing in COBB Testing Equipment is essential for industries that rely on the quality of paper and cardboard materials. By understanding and controlling water absorption characteristics, businesses can ensure that their products meet the highest standards of quality and performance.