{"id":6709,"date":"2025-06-16T14:59:12","date_gmt":"2025-06-16T06:59:12","guid":{"rendered":"https:\/\/www.qualitester.com\/?page_id=6709"},"modified":"2025-06-16T14:59:12","modified_gmt":"2025-06-16T06:59:12","slug":"astm-f88","status":"publish","type":"page","link":"https:\/\/www.qualitester.com\/lv\/standards\/astm-f88\/","title":{"rendered":"ASTM F88"},"content":{"rendered":"<h1 style=\"text-align: center;\" data-start=\"400\" data-end=\"980\">ASTM F88<br \/>\n<small>Seal Strength of Flexible Barrier Materials<\/small><\/h1>\n<p data-start=\"400\" data-end=\"980\">ASTM F88 is the internationally recognized <strong data-start=\"462\" data-end=\"534\">standard test method for seal strength of flexible barrier materials<\/strong>. It plays a critical role in the packaging industry, especially in <strong data-start=\"602\" data-end=\"639\">medical, food, and pharmaceutical<\/strong> sectors where the integrity of packaging can directly impact product safety.<\/p>\n<h2 data-start=\"987\" data-end=\"1308\">Understanding ASTM F88 and Its Purpose<\/h2>\n<p data-start=\"987\" data-end=\"1308\"><strong data-start=\"1032\" data-end=\"1044\">ASTM F88<\/strong> defines procedures for measuring the seal strength of flexible barrier materials. It evaluates how much force is needed to separate a seal\u2014providing insight into the sealing process&#8217;s consistency, quality, and durability. According to section 4 of the standard:<\/p>\n<ul>\n<li data-start=\"1311\" data-end=\"1422\"><strong data-start=\"1311\" data-end=\"1328\">Seal strength<\/strong> serves as a key metric in <strong data-start=\"1355\" data-end=\"1377\">process validation<\/strong>, <strong data-start=\"1379\" data-end=\"1390\">control<\/strong>, un <strong data-start=\"1396\" data-end=\"1419\">capability analysis<\/strong>.<\/li>\n<li data-start=\"1425\" data-end=\"1561\">A <strong data-start=\"1427\" data-end=\"1452\">minimum seal strength<\/strong> ensures product protection, while in some cases, limiting maximum seal strength allows for easier opening.<\/li>\n<li data-start=\"1564\" data-end=\"1705\">The method supports compliance, traceability, and repeatability\u2014crucial for regulatory environments like medical device and food packaging.<\/li>\n<\/ul>\n<h2 data-start=\"1712\" data-end=\"1866\">Techniques for Seal Strength Measurement<\/h2>\n<p data-start=\"1712\" data-end=\"1866\">ASTM F88 outlines three main test techniques to address varying material flexibility and test conditions:<\/p>\n<ul>\n<li data-start=\"1870\" data-end=\"1984\"><strong data-start=\"1870\" data-end=\"1900\">Technique A (Unsupported):<\/strong> Each leg of the sample is clamped without support. Suitable for basic evaluation.<\/li>\n<li data-start=\"1987\" data-end=\"2100\"><strong data-start=\"1987\" data-end=\"2027\">Technique B (Supported 90\u00b0 by Hand):<\/strong> One tail is hand-supported at a right angle, reducing bending effects.<\/li>\n<li data-start=\"2103\" data-end=\"2301\"><strong data-start=\"2103\" data-end=\"2136\">Technique C (Supported 180\u00b0):<\/strong> The less flexible tail is backed by a rigid plate; the flexible tail is folded and pulled. This is the most controlled method for reducing sample flex distortion.<\/li>\n<\/ul>\n<p data-start=\"2303\" data-end=\"2388\">Consistent technique usage is crucial throughout a test series to avoid variations.<\/p>\n<h2 data-start=\"2395\" data-end=\"2559\">Apparatus for ASTM F88 Seal Strength Testing<\/h2>\n<p data-start=\"2395\" data-end=\"2559\">Port\u0101ls <strong data-start=\"2450\" data-end=\"2477\">stiepes test\u0113\u0161anas ma\u0161\u012bna<\/strong> is central to ASTM F88 implementation. It must meet the following requirements:<\/p>\n<ul>\n<li data-start=\"2562\" data-end=\"2635\">Constant rate of jaw separation (adjustable between 200 to 300 mm\/min).<\/li>\n<li data-start=\"2638\" data-end=\"2711\">Accurate measurement of both tensile force and grip displacement (\u00b12%).<\/li>\n<li data-start=\"2714\" data-end=\"2777\">Even stress distribution and prevention of specimen slippage.<\/li>\n<li data-start=\"2780\" data-end=\"2919\">Optional features like force-travel plotting and average force calculation over a programmable range are desirable for in-depth analysis.<\/li>\n<\/ul>\n<p data-start=\"2921\" data-end=\"3218\"><strong data-start=\"2921\" data-end=\"2971\">Cell Instruments\u2019 TST-01 <a href=\"https:\/\/www.qualitester.com\/lv\/products-2\/tensile-tester-tst-01\/\">Bl\u012bv\u0113juma iztur\u012bbas testeris<\/a><\/strong> is engineered to meet and exceed ASTM F88 standards. It features precision control of jaw speed, high-resolution load cells, and data acquisition systems that support all three test techniques, making it ideal for laboratory and industrial use.<\/p>\n<h2 data-start=\"3225\" data-end=\"3275\">Specimen Preparation and Sampling Guidelines<\/h2>\n<ul>\n<li data-start=\"3278\" data-end=\"3338\">Specimens must be clean-cut and perpendicular to the seal.<\/li>\n<li data-start=\"3341\" data-end=\"3402\">Standard widths are 15 mm or 25 mm, with a \u00b10.5% tolerance.<\/li>\n<li data-start=\"3405\" data-end=\"3482\">The number of test samples should ensure statistical confidence in results.<\/li>\n<li data-start=\"3485\" data-end=\"3582\">Testing locations should include multiple spots on the package seal to account for variability.<\/li>\n<\/ul>\n<h2 data-start=\"3589\" data-end=\"3928\">Conditioning and Aging Considerations<\/h2>\n<p data-start=\"3589\" data-end=\"3928\">Before testing, specimens may require conditioning based on their intended storage or use conditions. Heat-seal stability and environmental exposure (e.g., humidity, temperature) influence seal performance. ASTM recommends conditioning protocols as per Practice E171 or test-specific criteria.<\/p>\n<h2 data-start=\"3935\" data-end=\"3977\">Test Procedure According to ASTM F88<\/h2>\n<ol>\n<li data-start=\"3981\" data-end=\"4062\"><strong data-start=\"3981\" data-end=\"3994\">Calibrate<\/strong> the tensile machine according to the manufacturer\u2019s instructions.<\/li>\n<li data-start=\"4066\" data-end=\"4126\"><strong data-start=\"4066\" data-end=\"4085\">Cut and prepare<\/strong> specimens as per dimension guidelines.<\/li>\n<li data-start=\"4130\" data-end=\"4211\"><strong data-start=\"4130\" data-end=\"4139\">Clamp<\/strong> each leg securely with equal alignment. Avoid pre-stressing the seal.<\/li>\n<li data-start=\"4215\" data-end=\"4304\"><strong data-start=\"4215\" data-end=\"4225\">Center<\/strong> the seal line and ensure perpendicular alignment with the direction of pull.<\/li>\n<li data-start=\"4308\" data-end=\"4366\"><strong data-start=\"4308\" data-end=\"4316\">Tests<\/strong> at the grip separation speed of 200\u2013300 mm\/min.<\/li>\n<li data-start=\"4370\" data-end=\"4468\"><strong data-start=\"4370\" data-end=\"4380\">Ieraksts<\/strong> results, including maximum force, average force (if needed), and force-travel curves.<\/li>\n<li data-start=\"4472\" data-end=\"4573\"><strong data-start=\"4472\" data-end=\"4484\">Document<\/strong> the technique used and any tail orientation, especially when comparing across batches.<\/li>\n<\/ol>\n<h2 data-start=\"4580\" data-end=\"4634\">Applications of ASTM F88 in Packaging Industries<\/h2>\n<ul>\n<li data-start=\"4637\" data-end=\"4739\"><strong data-start=\"4637\" data-end=\"4659\">Medical Packaging:<\/strong> Ensures sterile barriers are strong enough to protect contents, yet peelable.<\/li>\n<li data-start=\"4742\" data-end=\"4841\"><strong data-start=\"4742\" data-end=\"4761\">Food Packaging:<\/strong> Validates that seals prevent contamination and leakage during transportation.<\/li>\n<li data-start=\"4844\" data-end=\"4942\"><strong data-start=\"4844\" data-end=\"4864\">Farmaceitiskie l\u012bdzek\u013ci:<\/strong> Critical for regulatory compliance in drug safety and packaging uniformity.<\/li>\n<\/ul>\n<p data-start=\"4944\" data-end=\"5079\">Consistent seal strength testing improves packaging reliability, consumer satisfaction, and compliance with ISO and FDA requirements.<\/p>\n<h2 data-start=\"5086\" data-end=\"5586\">Why Choose Cell Instruments for Seal Strength Testing<\/h2>\n<p data-start=\"5086\" data-end=\"5586\">Cell Instruments\u2019 <strong data-start=\"5164\" data-end=\"5196\">TST-01 Seal Strength Tester<\/strong> offers full compliance with ASTM F88, high-speed testing, customizable grips for different materials, and intuitive software for data logging and reporting. Our equipment is used by global clients across <strong data-start=\"5401\" data-end=\"5466\">packaging, medical device, and quality assurance laboratories<\/strong>. We also offer customized test automation and multi-functional systems for combined tensile, peel, and burst testing.<\/p>\n<p data-start=\"5593\" data-end=\"6038\"><a href=\"https:\/\/www.astm.org\/f0088_f0088m-21.html\" target=\"_blank\" rel=\"noopener nofollow\"><strong data-start=\"5610\" data-end=\"5622\">ASTM F88<\/strong><\/a> is the gold standard for <strong data-start=\"5648\" data-end=\"5683\">packaging seal strength testing<\/strong> of <strong data-start=\"5687\" data-end=\"5717\">flexible barrier materials<\/strong>. By following this standard, manufacturers and quality control professionals can ensure product safety, packaging consistency, and regulatory compliance. For precise and reliable seal strength testing, Cell Instruments provides high-quality instruments and technical support to help you achieve operational excellence.<\/p>\n<hr data-start=\"6040\" data-end=\"6043\" \/>\n<h2 data-start=\"6045\" data-end=\"6055\">Bie\u017e\u0101k uzdotie jaut\u0101jumi<\/h2>\n<p data-start=\"6057\" data-end=\"6240\"><strong data-start=\"6057\" data-end=\"6112\">1. What is the primary purpose of ASTM F88 testing?<\/strong><br data-start=\"6112\" data-end=\"6115\" \/>To evaluate the seal strength of flexible packaging and ensure consistent seal integrity during manufacturing and handling.<\/p>\n<p data-start=\"6242\" data-end=\"6415\"><strong data-start=\"6242\" data-end=\"6296\">2. Which test technique (A, B, or C) should I use?<\/strong><br data-start=\"6296\" data-end=\"6299\" \/>It depends on material type and application. Technique C is preferred for reducing variation due to material flex.<\/p>\n<p data-start=\"6417\" data-end=\"6619\"><strong data-start=\"6417\" data-end=\"6491\">3. Can the test machine calculate average seal strength automatically?<\/strong><br data-start=\"6491\" data-end=\"6494\" \/>Yes. Advanced testers like Cell Instruments\u2019 TST-01 offer programmable grip travel range to compute average seal strength.<\/p>\n<p data-start=\"6621\" data-end=\"6795\"><strong data-start=\"6621\" data-end=\"6678\">4. How many specimens should I test per sample batch?<\/strong><br data-start=\"6678\" data-end=\"6681\" \/>You should test a statistically relevant number, often 5\u201310 samples, from different seal locations for accuracy.<\/p>\n<p data-start=\"6797\" data-end=\"6988\"><strong data-start=\"6797\" data-end=\"6861\">5. Can this method be used for packages with visual defects?<\/strong><br data-start=\"6861\" data-end=\"6864\" \/>Yes, but the testing objective must guide this decision. Including defective seals can help assess worst-case performance.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM F88 Elast\u012bgo barjermateri\u0101lu bl\u012bv\u0113juma iztur\u012bba ASTM F88 ir starptautiski atz\u012bta standarta testa metode elast\u012bgo barjermateri\u0101lu bl\u012bv\u0113juma iztur\u012bbas noteik\u0161anai. Tai ir iz\u0161\u0137iro\u0161a noz\u012bme iepakojuma nozar\u0113, jo \u012bpa\u0161i medic\u012bnas, p\u0101rtikas un farm\u0101cijas nozar\u0113, kur iepakojuma integrit\u0101te var tie\u0161i ietekm\u0113t produktu dro\u0161\u012bbu. Izpratne par ASTM F88 un t\u0101 ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/lv\/standards\/astm-f88\/\"> <span class=\"screen-reader-text\">ASTM F88<\/span> Las\u012bt vair\u0101k \"<\/a><\/p>","protected":false},"author":4,"featured_media":6711,"parent":4948,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-6709","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/pages\/6709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/comments?post=6709"}],"version-history":[{"count":0,"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/pages\/6709\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/pages\/4948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/media\/6711"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/lv\/wp-json\/wp\/v2\/media?parent=6709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}