{"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 Tester COBB"},"content":{"rendered":"<h2>1. Prezentarea testerului COBB<\/h2>\n<p><strong>Tester COBB<\/strong>\u00a0se utilizeaz\u0103 pentru evaluarea absorb\u021biei de ap\u0103 a h\u00e2rtiei \u0219i a cartonului prin intermediul\u00a0<strong>metoda de testare Cobb<\/strong>. Se dovede\u0219te eficient \u00een evaluarea col\u0103rii h\u00e2rtiei \u0219i a absorb\u021biei de ap\u0103 pe suprafe\u021bele de carton, dar nu este recomandat pentru utilizarea pe h\u00e2rtie simpl\u0103 sau h\u00e2rtie gofrat\u0103 cu o greutate de baz\u0103 sub 50 g\/m\u00b2, care prezint\u0103 un grad redus de colare sau numeroase perfora\u021bii. \u00cen plus, nu este adecvat pentru evaluarea precis\u0103 a h\u00e2rtiei \u0219i a cartonului neap\u0103sat, \u0219i nici nu ofer\u0103 o evaluare precis\u0103 a performan\u021bei de scriere a h\u00e2rtiei sau a cartonului.<\/p>\n<p><strong>Aparatul de testare Cobb<\/strong>\u00a0evalueaz\u0103 capacitatea de absorb\u021bie a apei a suprafe\u021belor din h\u00e2rtie sau carton. Valoarea Cobb reprezint\u0103, \u00een condi\u021bii specifice \u0219i \u00eentr-un interval de timp determinat, masa de ap\u0103 absorbit\u0103 de suprafa\u021ba cartonului pe unitate de suprafa\u021b\u0103, exprimat\u0103 \u00een grame pe metru p\u0103trat (g\/m\u00b2).<\/p>\n<p>Durata total\u0103 recomandat\u0103 pentru testare, conform standardelor interna\u021bionale, pentru eliminarea excesului de ap\u0103 \u0219i efectuarea testului de absorb\u021bie a apei este urm\u0103toarea:<\/p>\n<div class=\"table\">\n<table>\n<colgroup>\n<col \/>\n<col \/>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<td>Durata recomandat\u0103<\/td>\n<td>Mark<\/td>\n<td>Timpul necesar pentru eliminarea excesului de ap\u0103 (S)<\/td>\n<td>Timpul necesar pentru absorb\u021bia complet\u0103 a apei  (S)<\/td>\n<\/tr>\n<tr>\n<td>\u00a0(S)<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>30<\/td>\n<td>cobb30<\/td>\n<td>20 \u00b1 1<\/td>\n<td>30\u00b11<\/td>\n<\/tr>\n<tr>\n<td>60<\/td>\n<td>cobb60<\/td>\n<td>45\u00b11<\/td>\n<td>60\u00b12<\/td>\n<\/tr>\n<tr>\n<td>120<\/td>\n<td>cobb120<\/td>\n<td>105\u00b12<\/td>\n<td>120 \u00b1 2<\/td>\n<\/tr>\n<tr>\n<td>300<\/td>\n<td>cobb300<\/td>\n<td>285\u00b12<\/td>\n<td>300 \u00b1 2<\/td>\n<\/tr>\n<tr>\n<td>1800<\/td>\n<td>cobb1800<\/td>\n<td>1755\u20131815<\/td>\n<td>Dup\u0103 \u00eendep\u0103rtarea excesului de ap\u0103 15\u00b12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-383\" src=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-300x300.jpg\" alt=\"COBB-01 Tester COBB 11\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-300x300.jpg 300w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-150x150.jpg 150w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-768x768.jpg 768w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-600x600.jpg 600w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11-100x100.jpg 100w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester11.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>2. Ce este dispozitivul de t\u0103iere a probelor COBB?<\/h2>\n<p><strong>Dispozitivul de t\u0103iere a probelor COBB<\/strong>\u00a0este un instrument esen\u021bial pentru testarea absorb\u021biei, care decupeaz\u0103 rapid \u0219i precis o prob\u0103 cu o suprafa\u021b\u0103 specificat\u0103 de \u03c6125 mm. Este un dispozitiv de prelevare de tip \u0219tampil\u0103 \u0219i se dovede\u0219te a fi un aparat ideal pentru produc\u021bia de carton ondulat \u0219i cutii de carton, cercetare, controlul calit\u0103\u021bii, inspec\u021bii \u0219i diverse alte departamente.<\/p>\n<p>&nbsp;<\/p>\n<h2>3. De ce ai nevoie de un tester COBB?<\/h2>\n<p>H\u00e2rtia \u0219i cartonul sunt materiale uzuale utilizate pentru con\u021binutul tip\u0103rit, iar propriet\u0103\u021bile lor de absorb\u021bie a apei pot influen\u021ba calitatea tip\u0103ririi. Cunoa\u0219terea\u00a0<strong>Valoarea Cobb\u00a0<\/strong>ajut\u0103 la asigurarea faptului c\u0103 materialele selectate sunt adecvate pentru imprimare, reduc\u00e2nd la minimum problemele legate de estomparea cernelii sau de calitatea slab\u0103 a imprim\u0103rii.<\/p>\n<p><strong>Testarea Cobb<\/strong>\u00a0este o m\u0103sur\u0103 de control al calit\u0103\u021bii menit\u0103 s\u0103 garanteze c\u0103 materialele respect\u0103 standardele din domeniu. Cercet\u0103torii din domeniul materialelor utilizeaz\u0103 aceste date pentru a optimiza compozi\u021bia h\u00e2rtiei \u0219i a cartonului, adapt\u00e2nd-o la utiliz\u0103ri specifice \u00een func\u021bie de caracteristicile de absorb\u021bie a apei.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-381\" src=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-300x300.jpg\" alt=\"COBB-01 Tester COBB\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-300x300.jpg 300w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-150x150.jpg 150w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-768x768.jpg 768w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-600x600.jpg 600w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4-100x100.jpg 100w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester4.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>4. Avantajele testerului COBB<\/h2>\n<p>Fabricat din o\u021bel inoxidabil<\/p>\n<p>Rol\u0103 metalic\u0103 conform\u0103 cu standardele<\/p>\n<p>&nbsp;<\/p>\n<h2>5. Principiul de func\u021bionare al testerului COBB<\/h2>\n<p>\u00cenainte de efectuarea testului, c\u00e2nt\u0103ri\u021bi proba. Dup\u0103 ce o parte a probei a intrat \u00een contact cu apa pentru o durat\u0103 specificat\u0103, \u00eendep\u0103rta\u021bi excesul de umiditate de pe proba uscat\u0103 \u0219i c\u00e2nt\u0103ri\u021bi-o imediat. Exprima\u021bi rezultatele prin cre\u0219terea masei pe unitate de suprafa\u021b\u0103 a probei, m\u0103surat\u0103 \u00een grame pe metru p\u0103trat (g\/m\u00b2).<\/p>\n<p>&nbsp;<\/p>\n<h2>6. Utilizarea testerului COBB<\/h2>\n<p><strong>Aparatul de testare Cobb<\/strong>\u00a0este utilizat\u0103 \u00een mod obi\u0219nuit pentru a m\u0103sura capacitatea de absorb\u021bie a apei a materialelor poroase, \u00een special a h\u00e2rtiei \u0219i a cartonului. Aceasta este esen\u021bial\u0103 pentru evaluarea capacit\u0103\u021bii acestor materiale de a absorbi apa, ceea ce poate influen\u021ba diverse aplica\u021bii, precum tip\u0103rirea, ambalarea \u0219i produsele pe baz\u0103 de h\u00e2rtie.\u00a0<strong>Aparat de testare Cobb<\/strong>\u00a0este deosebit de relevant pentru materialele cu caracteristici semnificative de absorb\u021bie a apei, iar respectarea anumitor standarde este esen\u021bial\u0103 pentru controlul calit\u0103\u021bii \u0219i optimizarea performan\u021belor.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-379\" src=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-300x300.jpg\" alt=\"COBB-01 Tester COBB\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-300x300.jpg 300w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-150x150.jpg 150w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-768x768.jpg 768w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-600x600.jpg 600w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2-100x100.jpg 100w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester2.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>7. Caracteristicile tehnice ale testerului COBB<\/h2>\n<div class=\"table\">\n<table>\n<colgroup>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<td colspan=\"2\">COBB-01<\/td>\n<\/tr>\n<tr>\n<td>Zona de testare<\/td>\n<td>100 \u00b1 0,2 cm\u00b2<\/td>\n<\/tr>\n<tr>\n<td>Consumul de ap\u0103<\/td>\n<td>100 \u00b1 5 ml<\/td>\n<\/tr>\n<tr>\n<td>L\u0103\u021bimea rolei metalice<\/td>\n<td>200 \u00b1 0,5 mm<\/td>\n<\/tr>\n<tr>\n<td>Greutate cu role metalice<\/td>\n<td>10 \u00b1 0,5 kg<\/td>\n<\/tr>\n<tr>\n<td>Dimensiune<\/td>\n<td>(396 \u00d7 315 \u00d7 300) mm (L \u00d7 l \u00d7 h)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"table\">\n<table>\n<colgroup>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<td colspan=\"2\">Dispozitiv de t\u0103iere a probelor COBB<\/td>\n<\/tr>\n<tr>\n<td>Diametrul de e\u0219antionare<\/td>\n<td>\u00d8 125 mm<\/td>\n<\/tr>\n<tr>\n<td>Eroarea de e\u0219antionare<\/td>\n<td>\u00b10,2 mm<\/td>\n<\/tr>\n<tr>\n<td>Grosimea e\u0219antion\u0103rii<\/td>\n<td>(0,1\u20132,0) mm<\/td>\n<\/tr>\n<tr>\n<td>Dimensiune<\/td>\n<td>(250 \u00d7 280 \u00d7 450) mm L \u00d7 l \u00d7 h<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>8. Standardele testerului COBB<\/h2>\n<p>GB\/T 1540, ISO 535, QB\/T 1668, TAPPI T441<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-378\" src=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-300x300.jpg\" alt=\"COBB-01 Tester COBB\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-300x300.jpg 300w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-150x150.jpg 150w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-768x768.jpg 768w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-600x600.jpg 600w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester-100x100.jpg 100w, https:\/\/www.materialstests.com\/wp-content\/uploads\/2025\/12\/COBB-01-COBB-Tester.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>9. Configurarea testerului COBB:<\/h2>\n<p>a) Configura\u021bie standard:<strong>\u00a0COBB-01 Tester COBB<\/strong>, Rol\u0103 metalic\u0103, manual\u0103<\/p>\n<p>b) Configura\u021bie op\u021bional\u0103: h\u00e2rtie absorbant\u0103,\u00a0<strong>Dispozitiv de t\u0103iere a probelor COBB<\/strong><\/p>\n<p>&nbsp;<\/p>\n<h2>10. \u00centreb\u0103ri frecvente despre COBB Tester<\/h2>\n<p><strong>Ce este valoarea COBB?<\/strong><br \/>\nValoarea Cobb reprezint\u0103 masa calculat\u0103 a apei absorbite \u00eentr-un interval de timp specificat de 1 m\u00b2 de h\u00e2rtie sau carton \u00een condi\u021bii specificate<\/p>\n<p><strong>Ce este timpul de absorb\u021bie?<\/strong><br \/>\nIntervalul de timp de la momentul \u00een care apa intr\u0103 \u00een contact cu proba p\u00e2n\u0103 la finalizarea absorb\u021biei de ap\u0103.<\/p>\n<p><strong>De ce este important testul COBB pentru calitatea h\u00e2rtiei?<\/strong><br \/>\nTestul COBB este esen\u021bial pentru evaluarea propriet\u0103\u021bilor de absorb\u021bie a apei ale h\u00e2rtiei. Aceste informa\u021bii sunt vitale pentru men\u021binerea calit\u0103\u021bii tip\u0103ririi, prevenind probleme precum estomparea cernelii sau sc\u0103derea standardelor de tip\u0103rire, aspect deosebit de important \u00een produc\u021bia de materiale tip\u0103rite de \u00eenalt\u0103 calitate.<\/p>\n<p><strong>Care este rola metalic\u0103 utilizat\u0103 \u00een testele COBB?\u00a0<\/strong><br \/>\nRola metalic\u0103 utilizat\u0103 \u00een testul COBB este o rol\u0103 din o\u021bel inoxidabil, cu o suprafa\u021b\u0103 neted\u0103 de 20 cm l\u0103\u021bime \u0219i o greutate de 10,0 \u00b1 0,5 kg (22 \u00b1 1,1 lb).<\/p>\n<p>&nbsp;<\/p>\n<p>Dac\u0103 ave\u021bi nevoi de cump\u0103rare, v\u0103 rug\u0103m s\u0103\u00a0<a href=\"https:\/\/www.materialstests.com\/ro\/contact-us.html\/\">contacta\u021bi-ne<\/a>\u00a0\u0219i COBB\u00a0<a class=\"aahaf6o\" title=\"Produc\u0103tor de aparate de testare\" href=\"https:\/\/www.materialstests.com\/ro\/paper-board-tester.html\/\">Produc\u0103tor de aparate de testare<\/a>\u00a0-\u00a0<a href=\"https:\/\/www.materialstests.com\/ro\/\">Cell Instruments<\/a>\u00a0v\u0103 va oferi produse satisf\u0103c\u0103toare.<\/p>\n<p><a href=\"https:\/\/www.materialstests.com\/ro\/products.html\/\"><img decoding=\"async\" title=\"COBB-01 Tester COBB\" src=\"https:\/\/image.chukouplus.com\/upload\/C_4083\/file\/20240222\/27e953cb0f80291dd9c5ea583ae534bc.png?1\" alt=\"COBB-01 Tester COBB\" \/><\/a><\/p>\n<p class=\"aahaf6o\">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:\u00a0<a class=\"aahaf6o\" title=\"Tester de murd\u0103rie de h\u00e2rtie furnizor\" href=\"https:\/\/www.materialstests.com\/ro\/products\/pdt-01-paper-dirt-tester.html\/\">Tester de murd\u0103rie de h\u00e2rtie furnizor<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&hellip;]<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"products-categories":[1468],"productstags":[],"standard-category":[],"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"},{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/standard-category?post=2927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}