{"id":2927,"date":"2026-02-05T01:35:00","date_gmt":"2026-02-05T01:35:00","guid":{"rendered":"https:\/\/www.materialstests.com\/products\/cobb-01-cobb-tester\/"},"modified":"2026-02-05T01:35:00","modified_gmt":"2026-02-05T01:35:00","slug":"cobb-01-cobb-tester","status":"publish","type":"products","link":"https:\/\/www.materialstests.com\/ro\/products\/cobb-01-cobb-tester.html","title":{"rendered":"COBB-01 COBB Tester"},"content":{"rendered":"

1. Introduction of\u00a0COBB Tester<\/h2>\n

Tester COBB<\/strong>\u00a0is used for assessing the water absorption of paper and paperboard through the\u00a0cobb test method<\/strong>. It proves effective in sizing paper and determining water absorption on cardboard surfaces, but it is not recommended for use on basic paper or embossed paper with a basis weight below 50g\/m\u00b2, having low sizing degree, or exhibiting numerous pinholes. Additionally, it is not suitable for assessing unsized paper and cardboard accurately, nor does it provide an accurate evaluation of the writing performance of paper or cardboard.<\/p>\n

The Cobb tester<\/strong>\u00a0evaluates the water absorption capability of paper or cardboard surfaces. The Cobb value represents, under specific conditions and within a specified timeframe, the mass of water absorbed by the carton board surface per unit area, expressed in grams per square meter (g\/m\u00b2).<\/p>\n

The total recommended test time by international standards for the removal of excess water and the execution of water absorption is as follows:<\/p>\n

\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n
Recommended time<\/td>\nMark<\/td>\nTime of remove excess water (S)<\/td>\nTime to finish absorbing water \u00a0(S)<\/td>\n<\/tr>\n
\u00a0(S)<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
30<\/td>\ncobb30<\/td>\n20\u00b11<\/td>\n30\u00b11<\/td>\n<\/tr>\n
60<\/td>\ncobb60<\/td>\n45\u00b11<\/td>\n60\u00b12<\/td>\n<\/tr>\n
120<\/td>\ncobb120<\/td>\n105\u00b12<\/td>\n120\u00b12<\/td>\n<\/tr>\n
300<\/td>\ncobb300<\/td>\n285\u00b12<\/td>\n300\u00b12<\/td>\n<\/tr>\n
1800<\/td>\ncobb1800<\/td>\n1755\uff5e1815<\/td>\nAfter remove excess water 15\u00b12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\"COBB-01<\/p>\n

2. What is COBB sample cutter?<\/h2>\n

The COBB sample cutter<\/strong>\u00a0is an essential tool for absorption testing, swiftly and accurately cutting a sample with a specified area of \u03c6125mm.It\u2019s a stamping type sampler and proves to be an ideal apparatus for corrugated board and carton production, research, quality supervision, inspections, and various other departments.<\/p>\n

 <\/p>\n

3. Why do you need a COBB Tester?<\/h2>\n

Paper and cardboard are common materials used for printed content, and their water absorption properties can impact print quality. Knowing the\u00a0Cobb value\u00a0<\/strong>helps ensure that the selected materials are suitable for printing, minimizing issues related to ink smudging or poor print quality.<\/p>\n

Cobb testing<\/strong>\u00a0is a quality control measure to ensure that the materials meet industry standards. Material scientists use this data to optimize the composition of paper and cardboard, tailoring it for specific uses based on its water absorption characteristics.<\/p>\n

\"COBB-01<\/p>\n

4. Advantages of COBB Tester<\/h2>\n

Stainless steel made<\/p>\n

Standard conformed metal roller<\/p>\n

 <\/p>\n

5. Test Principle of\u00a0COBB Tester<\/h2>\n

Before conducting the test, weigh the sample. When one side of the sample comes into contact with water for a specified duration, remove the excess moisture from the dried sample and immediately weigh it. Express the results by the increase in mass per unit area of the sample, measured in grams per square meter (g\/m\u00b2).<\/p>\n

 <\/p>\n

6. Application of\u00a0COBB Tester<\/h2>\n

The Cobb tester<\/strong>\u00a0is commonly used to measure the water absorption capacity of porous materials, particularly paper and cardboard. It is crucial for assessing the ability of these materials to absorb water, which can impact various applications, such as printing, packaging, and paper-based products. The\u00a0Cobb tester<\/strong>\u00a0is particularly relevant for materials where water absorption characteristics are significant, and maintaining specific standards is essential for quality control and performance optimization.<\/p>\n

\"COBB-01<\/p>\n

7. Specifications\u00a0of\u00a0COBB Tester<\/h2>\n
\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n
COBB-01<\/td>\n<\/tr>\n
Zona de testare<\/td>\n100\u00b10.2cm\u00b2<\/td>\n<\/tr>\n
Water Consumption<\/td>\n100\u00b15ml<\/td>\n<\/tr>\n
Metal Roller Width<\/td>\n200\u00b10.5mm<\/td>\n<\/tr>\n
Metal Roller Weight<\/td>\n10\u00b10.5kg<\/td>\n<\/tr>\n
Dimensiune<\/td>\n\uff08396*315*300\uff09mm LWH<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
COBB Sample Cutter<\/td>\n<\/tr>\n
Sampling Diameter<\/td>\n\u00d8125mm<\/td>\n<\/tr>\n
Sampling error<\/td>\n\u00b10.2mm<\/td>\n<\/tr>\n
Grosimea e\u0219antion\u0103rii<\/td>\n\uff080.1\uff5e2.0\uff09mm<\/td>\n<\/tr>\n
Dimensiune<\/td>\n(250*280*450) mm LWH<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

8. Standards\u00a0of\u00a0COBB Tester<\/h2>\n

GB\/T1540, ISO 535, QB\/T1668, TAPPI T441<\/p>\n

\"COBB-01<\/p>\n

9. Configuration of\u00a0COBB Tester:<\/h2>\n

a) Configura\u021bie standard:\u00a0COBB-01 COBB Tester<\/strong>, Metal Roller, manual<\/p>\n

b) Optional configuration: Blotting paper,\u00a0COBB sample cutter<\/strong><\/p>\n

 <\/p>\n

10. FAQs\u00a0of\u00a0COBB Tester<\/h2>\n

What is the COBB value?<\/strong>
\nCobb value is the calculated mass of water absorbed in a specified time by 1 m\u00b2 of paper or board under specified conditions<\/p>\n

What is absorption time?<\/strong>
\nThe time from the beginning of contact between water and sample to the end of water absorption.<\/p>\n

Why is the COBB test important for paper quality?<\/strong>
\nThe COBB test is crucial for assessing the water absorption properties of paper. This information is vital for maintaining print quality, preventing issues like ink smudging, or compromised print standards, which is especially important in the production of high-quality printed materials.<\/p>\n

What is the metal roller used in COBB testing?\u00a0<\/strong>
\nMetal roller used in COBB test is a stainless steel roller, having a smooth face 20 cm wide and eighing 10.0 \u00b1 0.5 kg (22 \u00b1 1.1 lb).<\/p>\n

 <\/p>\n

Dac\u0103 ave\u021bi nevoi de cump\u0103rare, v\u0103 rug\u0103m s\u0103\u00a0contacta\u021bi-ne<\/a>\u00a0and COBB\u00a0Tester manufacturer<\/a>\u00a0-\u00a0Cell Instruments<\/a>\u00a0v\u0103 va oferi produse satisf\u0103c\u0103toare.<\/p>\n

\"COBB-01<\/a><\/p>\n

Dac\u0103 dori\u021bi mai multe informa\u021bii despre acest produs, v\u0103 rug\u0103m s\u0103 nu ezita\u021bi s\u0103 ne contacta\u021bi. Recomand alte produse populare pentru dvs:\u00a0Tester de murd\u0103rie de h\u00e2rtie furnizor<\/a><\/p>","protected":false},"excerpt":{"rendered":"

1. Introduction of\u00a0COBB Tester COBB Tester\u00a0is used for assessing the water absorption of paper and paperboard through the\u00a0cobb test method. It proves effective in sizing paper and determining water absorption on cardboard surfaces, but it is not recommended for use on basic paper or embossed paper with a basis weight below 50g\/m\u00b2, having low sizing […]<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"products-categories":[1468],"productstags":[],"class_list":["post-2927","products","type-products","status-publish","hentry","products-categories-paper-board-tester"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products\/2927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/types\/products"}],"version-history":[{"count":0,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products\/2927\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/media?parent=2927"}],"wp:term":[{"taxonomy":"products-categories","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products-categories?post=2927"},{"taxonomy":"productstags","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/productstags?post=2927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}