{"id":137,"count":4,"description":"<h3><strong>Materiais de Aplica\u00e7\u00e3o<\/strong><\/h3>\r\n<a href=\"https:\/\/www.astm.org\/d0689-17.html\" target=\"_blank\" rel=\"noopener\">ASTM D689<\/a> especifica o m\u00e9todo de teste padr\u00e3o para determinar a resist\u00eancia ao rasgo de papel e papel\u00e3o. Este teste \u00e9 essencial para avaliar a qualidade e durabilidade de materiais usados em embalagens, impress\u00e3o e outras aplica\u00e7\u00f5es onde a resist\u00eancia do papel \u00e9 cr\u00edtica.\r\n<h3><strong>Processo de teste<\/strong><\/h3>\r\nThe test involves using a tear tester for paper, such as the Elmendorf-type tear tester. A sample of the paper or paperboard is prepared, with a specific notch cut into it. The sample is then clamped into the tester, and the instrument applies a controlled force to propagate the tear through the material. The force required to complete the tear is recorded.\r\n\r\n[embed]https:\/\/youtu.be\/oo5j21g_thM[\/embed]\r\n<h3><strong>Interpreta\u00e7\u00e3o do resultado do teste<\/strong><\/h3>\r\nThe test result is expressed in terms of the tearing resistance of the paper, usually in grams-force (gf). Higher values indicate greater resistance to tearing, implying a stronger and more durable material. These results help manufacturers and quality control professionals assess the material's suitability for its intended use.\r\n<h3><strong>Teste de signific\u00e2ncia<\/strong><\/h3>\r\nThe tear strength test is significant because it provides a quantitative measure of the paper's durability and performance under stress. This information is vital for ensuring that paper products meet specific quality standards and can withstand handling and processing without failure.\r\n<h3><strong>Requisitos do Instrumento<\/strong><\/h3>\r\n<a href=\"https:\/\/www.qualitester.com\/pt\/produto\/easy-to-operate-paper-and-film-tear-testing-instruments-elmendorf-method\/\"><img class=\"aligncenter wp-image-4120 size-medium\" src=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2023\/04\/SLD-01-Elmendorf-Tearing-Tester-5-300x300.jpg\" alt=\"Testador de rasgo ASTM D689 para papel\" width=\"300\" height=\"300\" \/><\/a>\r\n\r\nThe primary instrument used in this test is the tear tester for paper, which must be calibrated and maintained according to the manufacturer's specifications. The instrument should provide accurate and repeatable results, with a reliable method for clamping and tearing the sample.\r\n<h3><strong>Precau\u00e7\u00f5es<\/strong><\/h3>\r\n<span style=\"font-size: 16px\">Certifique-se de que a amostra seja preparada de acordo com as dimens\u00f5es padr\u00e3o e os requisitos de entalhe.<\/span>\r\n<ol>\r\n \t<li>Verifique se o testador de rasgo est\u00e1 devidamente calibrado antes de realizar o teste.<\/li>\r\n \t<li>Manuseie as amostras de papel com cuidado para evitar danos pr\u00e9-teste que podem afetar os resultados.<\/li>\r\n \t<li>Siga todos os protocolos de seguran\u00e7a para evitar ferimentos ao usar o testador de rasgo.<\/li>\r\n<\/ol>\r\n<h3>Refer\u00eancia<\/h3>\r\nM\u00e9todo de teste padr\u00e3o ASTM D689-17 para resist\u00eancia ao rasgo interno de papel","link":"https:\/\/www.qualitester.com\/pt\/categoria-produto\/astm\/astm-d689\/","name":"ASTM D689","slug":"astm-d689","taxonomy":"product_cat","parent":99,"meta":[],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/pt\/wp-json\/wp\/v2\/product_cat\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/pt\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/www.qualitester.com\/pt\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/pt\/wp-json\/wp\/v2\/product_cat\/99"}],"wp:post_type":[{"href":"https:\/\/www.qualitester.com\/pt\/wp-json\/wp\/v2\/product?product_cat=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}