WebCobb test (ISO 535, Tappi T441): What: Determination of the absorbing capacity of the substrate, expressed in g/m², in relation of which the degree of sizing can be established as a percentage. Why: Sizing has impact on the printability and the degree in which the substrate is writeable. In addition, the Cobb value plays a role when applying ... WebTypes of Test : - Cobb Index : ( 60 / 120 Second Test ) - Cobb Index : ( 30 Minute Test ) Confirms to : TAPPI T441 / ASTM D 3285 / ISO 535. This is an equipment to determine the water absorption property of paper, paper …
TAPPI T 441 Cobb Test » SGS-IPS Testing - Integrated Paper Servi…
WebThis test is usually applied to greaseproof, glassine, vegetable parchment. It is not always suitable for assessing papers and boards that are given grease or oil resistance by means of a coating or internal treatment. Our testing is performed to the Tappi standard T454 and MOD Def standard 81-93/2 Annex A. Permeability Test (ISO 16532-1) Webto all TAPPI Standards and Technical Information Papers for an annual fee, is available. For price information, visit the TAPPI website at www.tappi.org, or contact TAPPI Member … sign pros houston
Air resistance of paper (Gurley method) (Revision of T …
WebJun 14, 2006 · has higher resolution in measuring smaller air volumes, refe r to TAPPI T 536. For a method of measuring air permeance at pressures up to 9.85 kPa, using both smaller and larger test areas, refer to TAPPI T 547. 2. Summary This method measures the amount of time required for a cer tain volume of air to pass through a test specimen. The WebJun 14, 2006 · 3 / Castor-oil penetration test for paper T 462 om-01 4.2 Separatory funnel or buret, precision bore class A, with a tip of su ch diameter that 25 drops of distilled water delivered at 23º ± 1ºC will have a volume of 1 mL. The funnel or buret should be suspended with the end of the tip WebThis is a Video Guide of the COBB Tester manufactured by PackTest. Explaining how to cut Paper Board and Corrugated Board samples and how to test them. Its n... therafit store near me