Pap-Tech COBB Sizing Tester:
Manufactures and Suppliers
Pap-Tech Engineers and Associates manufacture and supplies Cobb Sizing Tester.
Cobb Sizing Tester is used for measuring the water absorbency of paper or paperboard. Cobb Sizing Tester is made up of stainless steel material, which is corrosion free. Cobb sizing tester has a circular shaped pan. Circular Sample sheet of 100 cm^2 area is placed over the rubber of circular pan with water inside the container of pan. Circular pan can be rotated about 180 degree. Cobb sizing tester is used to measure the absorbency of water of sample sheet. Cobb Sizing Tester has a stainless steel roller also. Roller is used for drying the wet sample sheet.
Firstly, we measure the GSM of circular sample sheet of paper or paperboard and then placed in the circular pan filled with water for Cobb Sizing test. Then, pan should be rotated at 180 degree and wait for few minutes. After sometime we see sample sheet of paper or paperboard absorbed the water. Due to water absorbency weight of paper or paperboard increases. Then, wet paper is pressed by roller to make the paper or paperboard dry. This process is done manually. Thus, we calculate the GSM of dry paper or paperboard, and compare it with the GSM reading of before process. So we can determine the increment of weight after the whole process.
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