{"id":1299,"date":"2025-08-01T07:53:26","date_gmt":"2025-08-01T07:53:26","guid":{"rendered":"https:\/\/www.plastictensile.com\/?p=1299"},"modified":"2025-08-01T07:56:02","modified_gmt":"2025-08-01T07:56:02","slug":"tensile-strength-of-polyethylene","status":"publish","type":"post","link":"https:\/\/www.plastictensile.com\/cs\/tensile-strength-of-polyethylene\/","title":{"rendered":"Pevnost v tahu polyethylenu"},"content":{"rendered":"<p>Na str\u00e1nk\u00e1ch <strong>pevnost v tahu polyethylenu<\/strong> je rozhoduj\u00edc\u00edm faktorem p\u0159i hodnocen\u00ed v\u00fdkonnosti, spolehlivosti a trvanlivosti plastov\u00fdch f\u00f3li\u00ed a obalov\u00fdch materi\u00e1l\u016f. Polyethylen (PE), \u0161iroce pou\u017e\u00edvan\u00fd v pru\u017en\u00fdch obalech, zdravotnick\u00fdch f\u00f3li\u00edch, zem\u011bd\u011blsk\u00fdch f\u00f3li\u00edch a pr\u016fmyslov\u00fdch vlo\u017ek\u00e1ch, mus\u00ed vykazovat dostate\u010dnou mechanickou pevnost, aby odolal tahu, protahov\u00e1n\u00ed a deformaci b\u011bhem pou\u017e\u00edv\u00e1n\u00ed a zpracov\u00e1n\u00ed.<\/p>\n\n\n\n<p>P\u0159esn\u00e9 m\u011b\u0159en\u00ed t\u00e9to vlastnosti je nezbytn\u00e9 pro zaji\u0161t\u011bn\u00ed kvality, dodr\u017eov\u00e1n\u00ed p\u0159edpis\u016f a v\u00fdvoj v\u00fdrobk\u016f. Jako p\u0159edn\u00ed poskytovatel <strong>zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed pro balen\u00ed<\/strong>, <strong>Cell Instruments<\/strong> nab\u00edz\u00ed komplexn\u00ed \u0159e\u0161en\u00ed, jako je <strong>TST-01 Tahov\u00e1 zkou\u0161e\u010dka<\/strong> k zaji\u0161t\u011bn\u00ed spolehliv\u00e9ho testov\u00e1n\u00ed PE f\u00f3li\u00ed a dal\u0161\u00edch flexibiln\u00edch materi\u00e1l\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u011b\u017en\u00e9 metody zkou\u0161en\u00ed pevnosti plast\u016f v tahu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Zkou\u0161ka pevnosti v tahu plast\u016f a ASTM D882<\/h3>\n\n\n\n<p>Na str\u00e1nk\u00e1ch <strong>zkou\u0161ka pevnosti v tahu plast\u016f<\/strong> ur\u010duje s\u00edlu pot\u0159ebnou k tahu materi\u00e1lu, dokud nedojde k jeho p\u0159etr\u017een\u00ed. Pro polyethylenov\u00e9 a jin\u00e9 plastov\u00e9 f\u00f3lie je nejpou\u017e\u00edvan\u011bj\u0161\u00ed metoda definov\u00e1na v n\u00e1sleduj\u00edc\u00edm textu <strong>ASTM D882<\/strong>, kter\u00e1 specifikuje postupy pro m\u011b\u0159en\u00ed pevnosti v tahu, meze kluzu a prodlou\u017een\u00ed p\u0159i p\u0159etr\u017een\u00ed tenk\u00fdch plastov\u00fdch f\u00f3li\u00ed.<\/p>\n\n\n\n<p>Pou\u017eit\u00ed normy ASTM D882 zaji\u0161\u0165uje konzistentnost, reprodukovatelnost a srovnatelnost \u00fadaj\u016f v r\u016fzn\u00fdch laborato\u0159\u00edch a v\u00fdrobn\u00edch z\u00e1vodech. Je to d\u016fle\u017eit\u00e9 zejm\u00e9na pro pr\u016fmyslov\u00e1 odv\u011btv\u00ed, kter\u00e1 mus\u00ed spl\u0148ovat mezin\u00e1rodn\u00ed regula\u010dn\u00ed normy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u011b\u0159en\u00ed pevnosti v tahu a prodlou\u017een\u00ed PE<\/h3>\n\n\n\n<p><strong>Pevnost v tahu PE<\/strong> ozna\u010duje maxim\u00e1ln\u00ed nap\u011bt\u00ed, kter\u00e9 polyethylenov\u00e1 f\u00f3lie vydr\u017e\u00ed p\u0159i natahov\u00e1n\u00ed, ne\u017e se p\u0159etrhne. Samotn\u00e1 pevnost v tahu v\u0161ak nevypov\u00edd\u00e1 o cel\u00e9 situaci.<\/p>\n\n\n\n<p><strong>Tah a prodlou\u017een\u00ed<\/strong> charakteristiky jsou \u010dasto hodnoceny spole\u010dn\u011b v <strong>zkou\u0161ka tahem v tahu<\/strong>. Prodlou\u017een\u00ed ud\u00e1v\u00e1, jak moc se f\u00f3lie nat\u00e1hne, ne\u017e se p\u0159etrhne, obvykle se vyjad\u0159uje v procentech p\u016fvodn\u00ed d\u00e9lky. To poskytuje informace o pru\u017enosti a ta\u017enosti - dvou d\u016fle\u017eit\u00fdch vlastnostech pro aplikace, jako jsou zdravotnick\u00e9 obaly nebo smr\u0161\u0165ovac\u00ed f\u00f3lie.<\/p>\n\n\n\n<p><strong>Zkou\u0161ky v tahu a prodlou\u017een\u00ed<\/strong> pom\u00e1haj\u00ed v\u00fdrobc\u016fm vyv\u00e1\u017eit pevnost s pru\u017enost\u00ed a optimalizovat tak vlastnosti materi\u00e1lu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jak se m\u011b\u0159\u00ed pevnost PE v tahu?<\/h3>\n\n\n\n<p>Pevnost v tahu polyethylenu se m\u011b\u0159\u00ed pomoc\u00ed:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u0158ez\u00e1n\u00ed vzork\u016f standardn\u00ed velikosti<\/strong> (obvykle ve tvaru obd\u00e9ln\u00edku nebo \u010dinky).<\/li>\n\n\n\n<li><strong>Mont\u00e1\u017e vzorku<\/strong> mezi rukoje\u0165mi na <strong>tahov\u00fd tester<\/strong>.<\/li>\n\n\n\n<li><strong>P\u016fsoben\u00ed s\u00edly p\u0159i konstantn\u00ed rychlosti<\/strong> dokud se vzorek nerozbije.<\/li>\n\n\n\n<li><strong>Z\u00e1znam s\u00edly a prodlou\u017een\u00ed<\/strong> pro v\u00fdpo\u010det tahov\u00fdch vlastnost\u00ed.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Provoz zkou\u0161ky tahu a prodlou\u017een\u00ed plastov\u00e9 f\u00f3lie podle normy ASTM D882 na tahov\u00e9 zkou\u0161e\u010dce TST-01\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/GekylTFLo0Q?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Pomoc\u00ed modern\u00edch n\u00e1stroj\u016f, jako je nap\u0159. <strong><a href=\"https:\/\/www.plastictensile.com\/cs\/\" target=\"_blank\" rel=\"noreferrer noopener\">TST-01 Tahov\u00e1 zkou\u0161e\u010dka<\/a><\/strong>, test poskytuje \u00fadaje o s\u00edle a posunut\u00ed s vysok\u00fdm rozli\u0161en\u00edm, kter\u00e9 se zobrazuj\u00ed v re\u00e1ln\u00e9m \u010dase a analyzuj\u00ed pomoc\u00ed vestav\u011bn\u00e9ho softwaru.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pou\u017eit\u00ed zkou\u0161ek pevnosti v tahu u filmov\u00fdch materi\u00e1l\u016f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pevnost f\u00f3lie v tahu u flexibiln\u00edch obal\u016f<\/h3>\n\n\n\n<p><strong>Pevnost filmu v tahu<\/strong> je kl\u00ed\u010dov\u00fdm parametrem pro filmy pou\u017e\u00edvan\u00e9 v:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Obaly na potraviny a n\u00e1poje<\/strong><\/li>\n\n\n\n<li><strong>Obaly pro zdravotnick\u00e9 prost\u0159edky<\/strong><\/li>\n\n\n\n<li><strong>Bari\u00e9rov\u00e9 f\u00f3lie na b\u00e1zi PE<\/strong><\/li>\n\n\n\n<li><strong>Zem\u011bd\u011blsk\u00e9 f\u00f3lie a vlo\u017eky<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Vysok\u00e1 pevnost v tahu zaji\u0161\u0165uje, \u017ee se obal p\u0159i uzav\u00edr\u00e1n\u00ed, pln\u011bn\u00ed nebo manipulaci neroztrhne. To pom\u00e1h\u00e1 zabr\u00e1nit kontaminaci, zachovat kvalitu v\u00fdrobku a zajistit bezpe\u010dnost u\u017eivatele.<\/p>\n\n\n\n<p>U vysokorychlostn\u00edch balic\u00edch linek se mohou materi\u00e1ly s nedostate\u010dnou pevnost\u00ed v tahu rozt\u00e1hnout nebo prasknout, co\u017e vede k prostoj\u016fm nebo vy\u0159azen\u00ed v\u00fdrobku.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u011b\u0159en\u00ed pevnosti v tahu a kontrola kvality<\/h3>\n\n\n\n<p><strong>M\u011b\u0159en\u00ed pevnosti v tahu<\/strong> je nezbytnou sou\u010d\u00e1st\u00ed vstupn\u00edch kontrol materi\u00e1lu, testov\u00e1n\u00ed uvol\u0148ov\u00e1n\u00ed \u0161ar\u017e\u00ed a validace v\u00fdzkumu a v\u00fdvoje. In\u017een\u00fdr\u016fm a pracovn\u00edk\u016fm kontroly kvality umo\u017e\u0148uje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ov\u011b\u0159te soulad s <strong>ASTM D882<\/strong> nebo <strong>ASTM F88<\/strong> pro ut\u011bsn\u011bn\u00e9 vrstvy f\u00f3lie<\/li>\n\n\n\n<li>Sledov\u00e1n\u00ed konzistence materi\u00e1lu mezi jednotliv\u00fdmi \u0161ar\u017eemi<\/li>\n\n\n\n<li>V\u010dasn\u00e1 identifikace probl\u00e9m\u016f se slo\u017een\u00edm nebo vytla\u010dov\u00e1n\u00edm<\/li>\n\n\n\n<li>Podpora v\u00fdvoje pevn\u011bj\u0161\u00edch a leh\u010d\u00edch film\u016f<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Doporu\u010den\u00e9 vybaven\u00ed: TST-01 Tenzometrick\u00e1 zkou\u0161e\u010dka od Cell Instruments<\/h2>\n\n\n\n<p>Na str\u00e1nk\u00e1ch <strong>TST-01 Tahov\u00e1 zkou\u0161e\u010dka<\/strong> je navr\u017een pro spolehliv\u00e9 a v\u0161estrann\u00e9 zkou\u0161ky pevnosti v tahu. Je optimalizov\u00e1n pro polyethylenov\u00e9 f\u00f3lie, lamin\u00e1ty, netkan\u00e9 textilie a dal\u0161\u00ed.<\/p>\n\n\n\n<p><strong>Kl\u00ed\u010dov\u00e9 vlastnosti:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<ul class=\"wp-block-list\">\n<li><strong>Testovac\u00ed rozsah:<\/strong> A\u017e 500 N nebo 1 kN, vhodn\u00e9 pro tenk\u00e9 vrstvy i pevn\u011bj\u0161\u00ed materi\u00e1ly.<\/li>\n\n\n\n<li><strong>P\u0159esn\u00fd kuli\u010dkov\u00fd \u0161roub a nastaviteln\u00e1 rychlost:<\/strong> Od 1-500 mm\/min pro flexibiln\u00ed testovac\u00ed protokoly<\/li>\n\n\n\n<li><strong>\u00b10,5% F.S. P\u0159esnost:<\/strong> Vysok\u00e1 p\u0159esnost s konzistentn\u00edm p\u016fsoben\u00edm s\u00edly<\/li>\n\n\n\n<li><strong>Zobrazen\u00ed dat v re\u00e1ln\u00e9m \u010dase:<\/strong> 7palcov\u00fd dotykov\u00fd displej HMI pro vizu\u00e1ln\u00ed zp\u011btnou vazbu<\/li>\n\n\n\n<li><strong>Vestav\u011bn\u00e9 programy:<\/strong> Podpora pro <strong>ASTM D882<\/strong>, <strong>ASTM F88<\/strong>a dal\u0161\u00ed normy<\/li>\n\n\n\n<li><strong>Kompatibilita s v\u00edce sv\u00edtidly:<\/strong> Podporuje zkou\u0161ky pevnosti v tahu, odlupov\u00e1n\u00ed, prop\u00edchnut\u00ed a ut\u011bsn\u011bn\u00ed.<\/li>\n\n\n\n<li><strong>V\u00fdstup RS-232 a voliteln\u00e1 tisk\u00e1rna:<\/strong> Pro efektivn\u00ed spr\u00e1vu dat a pod\u00e1v\u00e1n\u00ed zpr\u00e1v<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-1024x1024.webp\" alt=\"pevnost v tahu polyethylenu\" class=\"wp-image-1302\" srcset=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-1024x1024.webp 1024w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-300x300.webp 300w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-150x150.webp 150w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-768x768.webp 768w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1-1536x1536.webp 1536w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/tensile-tester-1_11zon-1.webp 1840w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<p>TST-01 pom\u00e1h\u00e1 zajistit spolehlivou <strong>m\u011b\u0159en\u00ed pevnosti v tahu<\/strong> pro materi\u00e1ly pou\u017e\u00edvan\u00e9 v obalech, zdravotnictv\u00ed, elektronice a dal\u0161\u00edch odv\u011btv\u00edch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011bre\u010dn\u00e9 my\u0161lenky<\/h2>\n\n\n\n<p>Porozum\u011bn\u00ed a testov\u00e1n\u00ed <strong>pevnost v tahu polyethylenu<\/strong> je pro v\u00fdrobce, kte\u0159\u00ed usiluj\u00ed o kvalitu, bezpe\u010dnost a dodr\u017eov\u00e1n\u00ed p\u0159edpis\u016f, z\u00e1sadn\u00ed. A\u0165 u\u017e vyv\u00edj\u00edte nov\u00e9 obalov\u00e9 f\u00f3lie, ov\u011b\u0159ujete suroviny nebo zlep\u0161ujete stabilitu proces\u016f, tahov\u00e9 zkou\u0161ky nab\u00edzej\u00ed v\u011bdeck\u00fd p\u0159\u00edstup k m\u011b\u0159en\u00ed v\u00fdkonnosti materi\u00e1l\u016f.<\/p>\n\n\n\n<p>Na adrese <strong>Cell Instruments<\/strong>, jsme odhodl\u00e1ni pom\u00e1hat in\u017een\u00fdr\u016fm a odborn\u00edk\u016fm na kvalitu testovat chyt\u0159eji pomoc\u00ed \u0159e\u0161en\u00ed, jako je nap\u0159. <strong><a href=\"https:\/\/www.celtec.cn\/productinfo\/1228363.html\" target=\"_blank\" rel=\"noreferrer noopener\">TST-01 Tahov\u00e1 zkou\u0161e\u010dka<\/a><\/strong>-postaveno pro <strong>ASTM D882<\/strong>, <strong>Pevnost v tahu PE<\/strong>a dal\u0161\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Pevnost v tahu polyethylenu je rozhoduj\u00edc\u00edm faktorem p\u0159i hodnocen\u00ed v\u00fdkonnosti, spolehlivosti a trvanlivosti plastov\u00fdch f\u00f3li\u00ed a obalov\u00fdch materi\u00e1l\u016f. Polyethylen (PE), \u0161iroce pou\u017e\u00edvan\u00fd v pru\u017en\u00fdch obalech, zdravotnick\u00fdch f\u00f3li\u00edch, zem\u011bd\u011blsk\u00fdch f\u00f3li\u00edch a pr\u016fmyslov\u00fdch vlo\u017ek\u00e1ch, mus\u00ed vykazovat dostate\u010dnou mechanickou pevnost, aby odolal tahu, prota\u017een\u00ed a deformaci b\u011bhem pou\u017e\u00edv\u00e1n\u00ed a zpracov\u00e1n\u00ed. P\u0159esn\u00e9 m\u011b\u0159en\u00ed t\u00e9to hodnoty je [...]","protected":false},"author":1,"featured_media":1302,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1299","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/posts\/1299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/comments?post=1299"}],"version-history":[{"count":4,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/posts\/1299\/revisions"}],"predecessor-version":[{"id":1306,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/posts\/1299\/revisions\/1306"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/media\/1302"}],"wp:attachment":[{"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/media?parent=1299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/categories?post=1299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plastictensile.com\/cs\/wp-json\/wp\/v2\/tags?post=1299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}