{"id":11806,"date":"2024-06-03T18:55:46","date_gmt":"2024-06-03T17:55:46","guid":{"rendered":"https:\/\/www.innoform-coaching.de\/blog\/?p=11806"},"modified":"2024-06-04T08:07:33","modified_gmt":"2024-06-04T07:07:33","slug":"the-gelbo-flex-test-according-to-astm-f-392","status":"publish","type":"post","link":"https:\/\/www.innoform-coaching.de\/blog\/en\/2024\/06\/03\/the-gelbo-flex-test-according-to-astm-f-392\/","title":{"rendered":"The gelbo flex test according to ASTM F 392"},"content":{"rendered":"\n<p>Innoform Testservice frequently receives requests to test the mechanical strength of flexible (barrier) materials. These materials play a crucial role in many applications, from food packaging to technical protective films. A proven method for testing the mechanical strength of these materials is the gelbo flex test in accordance with ASTM F 392, which focuses in particular on the crease and buckling resistance of barrier materials such as film or paper laminates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is the gelbo flex test?<\/h2>\n\n\n\n<p>The gelbo flex test simulates the stresses to which flexible films are exposed during use. A film sample is stretched onto two rings in the shape of a tube and exposed to repeated pressure and squeezing movements. The intensity and frequency of these movements can be varied to simulate different application scenarios. When performing the test, a distinction is made between two main types, complete and partial twisting. These different methods make it possible to accurately simulate the specific requirements of different applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">After loading: testing the samples<\/h2>\n\n\n\n<p>After the mechanical stress caused by the yellow flex test, the film samples can be further analysed in two ways:<\/p>\n\n\n\n<p>Optical examination for pinholes: In this case, the sample is checked for small holes or weak points that may have been caused by the mechanical stress. This can be done either with the aid of a light table or a special test liquid. These pinholes may significantly affect the barrier properties. 2. permeation test: Using this method, the barrier effect of the stressed sample is compared with that of an untreated sample. This shows the extent to which the mechanical load influences the film&#8217;s ability to retain gases or water vapour.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Why is the gelbo flex test important?<\/h2>\n\n\n\n<p>In practice, high demands are placed on flexible materials. The yellow flex test offers a standardised method for evaluating the mechanical strength of these materials under realistic conditions. This enables manufacturers and users to ensure the quality and reliability of their products.<\/p>\n\n\n\n<p>Conclusion<\/p>\n\n\n\n<p>Innoform Testservice is your competent partner for testing the mechanical strength of flexible materials. With the gelbo flex test in accordance with ASTM F 392, we offer you a reliable method for testing and optimising the strength and barrier properties of your materials. Trust in our expertise and experience to ensure the quality of your products. www.innoform-testservice.de<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-vimeo wp-block-embed-vimeo wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Gelbo flex test\" src=\"https:\/\/player.vimeo.com\/video\/953250189?dnt=1&amp;app_id=122963\" width=\"500\" height=\"281\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture; clipboard-write\"><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Video Innoform Testservice<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Innoform Testservice frequently receives requests to test the mechanical strength of flexible (barrier) materials. These materials play a crucial role in many applications, from food packaging to technical protective films. A proven method for testing the mechanical strength of these materials is the gelbo flex test in accordance with ASTM F 392, which focuses in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6315,6317,6319],"tags":[],"class_list":["post-11806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-film-production-converting","category-film-testing-analytics","category-inno-letter-en"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/posts\/11806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/comments?post=11806"}],"version-history":[{"count":4,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/posts\/11806\/revisions"}],"predecessor-version":[{"id":11815,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/posts\/11806\/revisions\/11815"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/media\/11802"}],"wp:attachment":[{"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/media?parent=11806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/categories?post=11806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.innoform-coaching.de\/blog\/wp-json\/wp\/v2\/tags?post=11806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}