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ISO 535 GB/T1540-2002 Cobb Paper Water Absorption Tester
Application:
Paper and paper absorbency testers are conventional instruments for the water absorption test of paper and paperboard, also known as paper surface absorption weight gauges.
Principle:
Paper and paperboard surface water absorption (Cobb) value: the amount of water absorbed by the surface of the paper and paperboard per unit area under a certain pressure and temperature within a specified time, it’s calculated by g/m2. The specific formula is as following: C = (G2-G1) × 100. Where: C-Cobb absorption value, G2-sample mass after water absorption, G1-sample mass before water absorption. The paper and board absorbency tester is a conventional instrument for the water absorption test of paper and paperboard, also known as a paper surface absorption weight tester. This instrument uses the Cobb test method in various methods of absorption test, so it is also called the absorbable absorbability tester.
Specifications:
1. The cross-sectional area of the metal cylinder is 100±0.2cm2 (the corresponding inner diameter is 112.8±0.2mm).
Cylinder height: 50mm, the contact surface of the cylinder to the sample should be smooth.
2. When the basis weight of the absorbent paper is 200 to 250 g/m 2,the absorption speed is 75 mm/10 min.
When the basis weight of the absorbent paper is less than 200 to 250 g/m2, multiple layers can be used to meet the requirements.
3. Smooth metal flat roll:
The width of the roller is 200±0.5mm,
The mass should be 10 ± 0.5kg.
4. Test water consumption: 100ml ± 5ml
5. Instrument net weight: 28kg
ISO 535 GB/T1540-2002 Cobb Paper Water Absorption Tester
Application:
Paper and paper absorbency testers are conventional instruments for the water absorption test of paper and paperboard, also known as paper surface absorption weight gauges.
Principle:
Paper and paperboard surface water absorption (Cobb) value: the amount of water absorbed by the surface of the paper and paperboard per unit area under a certain pressure and temperature within a specified time, it’s calculated by g/m2. The specific formula is as following: C = (G2-G1) × 100. Where: C-Cobb absorption value, G2-sample mass after water absorption, G1-sample mass before water absorption. The paper and board absorbency tester is a conventional instrument for the water absorption test of paper and paperboard, also known as a paper surface absorption weight tester. This instrument uses the Cobb test method in various methods of absorption test, so it is also called the absorbable absorbability tester.
Specifications:
1. The cross-sectional area of the metal cylinder is 100±0.2cm2 (the corresponding inner diameter is 112.8±0.2mm).
Cylinder height: 50mm, the contact surface of the cylinder to the sample should be smooth.
2. When the basis weight of the absorbent paper is 200 to 250 g/m 2,the absorption speed is 75 mm/10 min.
When the basis weight of the absorbent paper is less than 200 to 250 g/m2, multiple layers can be used to meet the requirements.
3. Smooth metal flat roll:
The width of the roller is 200±0.5mm,
The mass should be 10 ± 0.5kg.
4. Test water consumption: 100ml ± 5ml
5. Instrument net weight: 28kg
Guangdong Hongtuo Instrument Technology Co.,Ltd has been specializing in density testing field on developing, innovating and producing since the year it was establised.
