Home » Testing & Measuring Equipments » COBB Tester » Board Cobb Sizing Tester
Board Cobb Sizing Tester
₹ 3,000 Get Latest Price
Product Specifications
| Absorbency paper | Blotting Paper |
| Availability | In Stock |
| Body Material | Stainless Steel |
| Couch roll | SS |
| Display Type | Analog |
| Finish | Powder Coated |
| Grade | A |
| Lid Type | Clamp Type |
| Roller Weight | 10 kg |
| Rubber Pad Diameter | 11.3cm |
| Sample Thickness | Up to 5 mm |
| Standard | TAPPI T441 |
| Test Area | 100 cm² |
| Test Duration | 120 sec |
| Test Inside area | 100Cm Sq. |
| Test Water | alkaline water |
| Usage | Paper Board, Corrugated Board |
GST No - 08AAQPA4228A2Z4 | Member since 2026
C-506, GURUSHIKHAR APARTMENTS, SANGANER, RADHA SWAMI SATSANG,POST BILWA, Jaipur, Jaipur, Rajasthan, 302022
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Product Details
The Cobb Sizing Tester evaluates the water absorbency of Board-based materials by measuring the weight increase of a sample after exposure to water for a specified time. It is an essential quality control tool for assessing the material's resistance to water, ensuring performance in various applications like printing and packaging. Features and Design Material Construction: Made of stainless steel, ensuring durability and resistance to corrosion. Includes a stainless steel roller for drying the wet sample after testing. Rotational Mechanism: Equipped with a circular pan that rotates 180°, facilitating even water exposure. Spring-Loaded Clamping System: Ensures a leak-proof seal by pressing the cylinder against the sample on a rubber mat. The clamping force is adjustable, and the cylinder can be easily lifted by pinching two handle bars together. Tilting Lid Design: The lid is secured using spring-loaded finger grips, allowing for smooth operation. Operational Process Sample Preparation: Measure the GSM (grams per square meter) of the circular sample of paper or paperboard. Place the sample in the circular pan filled with water. Testing: Rotate the pan 180° to ensure uniform water exposure. Allow the sample to sit in the water for a specified duration. Absorbency Measurement: After exposure, remove the sample and weigh it to determine the water absorbed. Use the stainless steel roller to press and dry the sample. Final Calculations: Measure the GSM of the dried sample. Compare the before-and-after weights to calculate the water absorptiveness or Cobb value. Key Parameters and Insights Cobb Value Definition:The mass of water absorbed in a specific time by one square meter of material under controlled conditions. Applications:Evaluates additives applied during manufacturing that enhance printing quality and liquid resistance. Materials Tested:Paper Board, and corrugated fiberboard. Benefits Provides accurate and reproducible results. Ensures better material selection for water-resistant applications. Enhances the quality of products by verifying resistance to liquids. The Cobb Sizing Tester is a simple yet indispensable tool for ensuring board-based materials meet industry standards for water resistance.
C-506, GURUSHIKHAR APARTMENTS, SANGANER, RADHA SWAMI SATSANG,POST BILWA, Jaipur, Jaipur, Rajasthan, 302022
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