{"id":1202,"date":"2025-07-15T08:41:08","date_gmt":"2025-07-15T08:41:08","guid":{"rendered":"https:\/\/www.wrapfilmtest.com\/?p=1202"},"modified":"2026-01-15T06:03:48","modified_gmt":"2026-01-15T06:03:48","slug":"wrap-stretch-film","status":"publish","type":"post","link":"https:\/\/www.wrapfilmtest.com\/lt\/wrap-stretch-film","title":{"rendered":"\u012evyniojimo pl\u0117vel\u0117s bandym\u0173 vadovas pagal ASTM D882"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u012evadas \u012f apvyniojimo tempimo pl\u0117vel\u0117s bandymus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pakavimo ir logistikos srityje labai svarbus vaidmuo tenka apvyniojamai tempiamajai pl\u0117velei. Labai svarbus jos geb\u0117jimas saugiai suvynioti gaminius, i\u0161laikant elastingum\u0105, tvirtum\u0105 ir ilgaam\u017ei\u0161kum\u0105 veikiant apkrovai. Siekdami u\u017etikrinti kokyb\u0119 ir nuoseklum\u0105, gamintojai ir kokyb\u0117s kontrol\u0117s grup\u0117s da\u017enai pasikliauja <strong><a href=\"https:\/\/www.wrapfilmtest.com\/lt\/astm-d882\/\">ASTM D882<\/a><\/strong>, pla\u010diai pripa\u017eintas standartas, skirtas nustatyti <strong>tempimo savyb\u0117s<\/strong> plon\u0173 plastikini\u0173 lak\u0161tini\u0173 med\u017eiag\u0173, pvz., tempiam\u0173j\u0173 pl\u0117veli\u0173. \u0160iame vadove apra\u0161ysime, kaip atlikti <strong>apvynioti tempimo pl\u0117vele<\/strong> veiksmingai atlikti testus, ypa\u010d <strong>tempimo stiprumo bandymai<\/strong>, <strong>pailg\u0117jimo bandymai<\/strong>, ir bendr\u0105sias <strong>tempimo pl\u0117vel\u0117s bandymai<\/strong>-u\u017etikrinti atitikt\u012f, na\u0161um\u0105 ir gamini\u0173 saug\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D882 standarto supratimas ir jo taikymas apvyniojimui tempimo pl\u0117vele<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D882 pateikia tiksli\u0105 plon\u0173 plastikini\u0173 pl\u0117veli\u0173 bandymo metodik\u0105, kuri apima <strong>apvynioti tempimo pl\u0117vele<\/strong> naudojamas pad\u0117kl\u0173 pakavimui, logistiniam pakavimui ir produkt\u0173 pakavimui \u012f paketus. Standarte nurodyti bandymo parametrai, bandini\u0173 matmenys, bandymo greitis ir \u012franga, reikalinga tempimo savyb\u0117ms, tokioms kaip tempimo stipris, pailg\u0117jimas ir tamprumo modulis, matuoti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Skirtingai nuo storesni\u0173 plastik\u0173, i\u0161bandyt\u0173 pagal ASTM D638 standart\u0105, <a href=\"https:\/\/store.astm.org\/d0882-18.html\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM D882<\/a> pritaikytas plonesn\u0117ms ir lankstesn\u0117ms pl\u0117vel\u0117ms, tod\u0117l idealiai tinka tempiamosios pl\u0117vel\u0117s bandymams.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Apvyniojimo tempimo pl\u0117vel\u0117s tempimo stiprumo bandymas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>tempimo stiprumo bandymas<\/strong> nustato did\u017eiausi\u0105 j\u0117g\u0105, kuri\u0105 gali atlaikyti apvyniojama tempimo pl\u0117vel\u0117, kol ji nutr\u016bks. \u0160i savyb\u0117 rodo, kiek pl\u0117vel\u0117 atspari traukimo j\u0117goms, o tai labai svarbu, kai ji i\u0161tempiama ant pad\u0117kl\u0173 ar gamini\u0173.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pagrindiniai \u017eingsniai, kuri\u0173 reikia laikytis:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed alignright 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=\"ASTM D882 plastikin\u0117s pl\u0117vel\u0117s \u012ftempimo ir pailg\u0117jimo bandymas su TST-01 tempimo testeriu\" 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<ul class=\"wp-block-list\">\n<li><strong>M\u0117ginio paruo\u0161imas:<\/strong> I\u0161kirpkite vienodo plo\u010dio (paprastai 15-25,4 mm) ir storio pl\u0117vel\u0117s juosteles. Bandinys turi b\u016bti bent 50 mm ilgesnis u\u017e su\u0117mimo atskyrim\u0105.<\/li>\n\n\n\n<li><strong>Bandym\u0173 s\u0105ranka:<\/strong> \u012estatykite bandin\u012f \u012f tempimo bandymo ma\u0161in\u0105 su <strong>pastovus kry\u017emin\u0117s galvut\u0117s jud\u0117jimo greitis<\/strong>.<\/li>\n\n\n\n<li><strong>Testo vykdymas:<\/strong> Pl\u0117vel\u0119 i\u0161tempkite nustatytu grei\u010diu (pagal pradin\u012f \u012ftempimo greit\u012f). Registruokite j\u0117gos ir tempimo kreiv\u0119, kol pl\u0117vel\u0117 nutr\u016bksta.<\/li>\n\n\n\n<li><strong>Rezultat\u0173 interpretacija:<\/strong> Apskai\u010diuokite tempimo stipr\u012f, padalydami did\u017eiausi\u0105 apkrov\u0105 i\u0161 bandinio skerspj\u016bvio ploto.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u012evyniojimo tempimo pl\u0117vel\u0117s pailg\u0117jimo bandymas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>pailg\u0117jimo bandymas<\/strong> \u012fvertinamas pl\u0117vel\u0117s geb\u0117jimas i\u0161sitempti prie\u0161 nutr\u016bkstant - svarbus jos lankstumo ir geb\u0117jimo i\u0161laikyti apkrov\u0105 rodiklis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ilginimo bandymo procesas:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Naudokite t\u0105 pat\u012f bandin\u012f, kaip ir tempimo stiprio bandymui.<\/li>\n\n\n\n<li>Bandymo metu i\u0161matuokite, kiek pl\u0117vel\u0117 pailg\u0117ja nuo pradinio ilgio, kol nutr\u016bksta.<\/li>\n\n\n\n<li>Pailg\u0117jimas i\u0161rei\u0161kiamas procentais:<br>Pailg\u0117jimas (%) = (L<sub>galutinis<\/sub> - L<sub>originalus<\/sub>) \u00f7 L<sub>originalus<\/sub> \u00d7 100<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>ASTM D882 standartas<\/strong> pateikiamos rekomendacijos d\u0117l tinkamo matuoklio ilgio ir deformacijos grei\u010dio, kad b\u016bt\u0173 u\u017etikrintas atkuriamumas ir tikslumas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Stretch pl\u0117vel\u0117s bandymo aspektai<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Be tempimo ir pailg\u0117jimo savybi\u0173, <strong>apvynioti tempimo pl\u0117vele<\/strong> testai gali apimti \u0161iuos matavimus:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tamprumo modulis<\/strong> - rodo pl\u0117vel\u0117s standum\u0105.<\/li>\n\n\n\n<li><strong>Sekantinis modulis<\/strong> - naudojama ma\u017eo tempimo pl\u0117vel\u0117s r\u016b\u0161ims.<\/li>\n\n\n\n<li><strong>Energija, skirta nutraukti<\/strong> - bendra energija, sugerta iki gedimo.<\/li>\n\n\n\n<li><strong>Derlingumo ta\u0161kas<\/strong> - ta\u0161kas, kuriame prasideda nuolatin\u0117 deformacija.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D882 leid\u017eia naudoti ekstensometr\u0105 labai tiksliam deformacijos matavimui ir rekomenduoja atlikti bandymus tiek ma\u0161inine, tiek skersine kryptimis, kad b\u016bt\u0173 atsi\u017evelgta \u012f pl\u0117vel\u0117s anizotropij\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geriausia tempiamosios pl\u0117vel\u0117s bandym\u0173 praktika<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">gauti tikslius ir pakartojamus rezultatus:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Palaikykite pastovias bandymo s\u0105lygas: temperat\u016br\u0105, dr\u0117gm\u0119 ir pl\u0117vel\u0117s orientacij\u0105.<\/li>\n\n\n\n<li>Naudokite <strong>bent penki egzemplioriai<\/strong> izotropin\u0117ms pl\u0117vel\u0117ms ir <strong>de\u0161imt<\/strong> jei \u012ftariama anizotropija.<\/li>\n\n\n\n<li>Venkite \u017eandikauli\u0173 pertrauk\u0173, nebent statisti\u0161kai \u012frodyta, kad jos atspindi pagr\u012fstus rezultatus.<\/li>\n\n\n\n<li><font style=\"vertical-align: inherit\"><font style=\"vertical-align: inherit\">\u012esitikinkite, kad bandinio storis ir plotis nevir\u0161ija leistin\u0173 nuokrypi\u0173, kaip apibr\u0117\u017eta ASTM D882 7 skyriuje.<\/font><\/font><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Tinkamos \u012frangos pasirinkimas<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\"><font style=\"vertical-align: inherit\"><\/font><font style=\"vertical-align: inherit\"><font style=\"vertical-align: inherit\">Tikslumas <strong>apvynioti tempimo pl\u0117vele<\/strong> bandymai labai priklauso nuo bandymo ma\u0161inos na\u0161umo. Laboratorijoms, siekian\u010dioms gauti patikimus ir reikalavimus atitinkan\u010dius rezultatus, reikia <strong>L\u0105steli\u0173 instrumentai <\/strong><a href=\"https:\/\/www.wrapfilmtest.com\/lt\/tensile-and-elongation-tester\/\"><strong>TST-01 tempimo ir pailg\u0117jimo testeris<\/strong> <\/a>yra patikimas pasirinkimas. Jis palaiko programuojam\u0105 bandymo greit\u012f, turi tikslias apkrovos l\u0105stel\u0117s ir yra sukurtas taip, kad atitikt\u0173 ASTM D882 reikalavimus. Nesvarbu, ar atliekate \u012fprast\u0105 kokyb\u0117s kontrol\u0119, ar pa\u017eangius med\u017eiag\u0173 tyrimus, \u0161is prietaisas u\u017etikrina patikimus duomenis.<\/font><\/font><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester-.webp\" alt=\"apvynioti tempimo pl\u0117vele\" class=\"wp-image-1208\" style=\"width:327px;height:auto\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester-.webp 600w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--400x400.webp 400w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--280x280.webp 280w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\">TST-01 tempimo ir pailg\u0117jimo testeris<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">I\u0161vada<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tikslus testavimas <strong>apvynioti tempimo pl\u0117vele<\/strong> u\u017etikrina gaminio patikimum\u0105, atitikt\u012f teis\u0117s akt\u0173 reikalavimams ir galutinio vartotojo pasitenkinim\u0105. Vadovaudamiesi ASTM D882 proced\u016bromis <strong>tempimo stiprumo bandymai<\/strong>, <strong>pailg\u0117jimo bandymai<\/strong>, ir kiti <strong>tempimo pl\u0117vel\u0117s bandymai<\/strong>, gamintojai gali patvirtinti pl\u0117vel\u0117s veikim\u0105 realiomis s\u0105lygomis. Naudojant pa\u017eangius prietaisus, pvz. <strong>TST-01 i\u0161 <a href=\"https:\/\/www.wrapfilmtest.com\/lt\/\">L\u0105steli\u0173 instrumentai<\/a><\/strong>, \u0161ie bandymai tampa ne tik patikimi, bet ir veiksmingi bei pritaikomi gamybos poreikiams.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u012evadas \u012f pl\u0117vel\u0117s bandymus Pl\u0117vel\u0117s bandymai Pl\u0117vel\u0117 atlieka labai svarb\u0173 vaidmen\u012f pakavimo ir logistikos srityje. Labai svarbus jos geb\u0117jimas saugiai \u012fvynioti gaminius, i\u0161laikant elastingum\u0105, tvirtum\u0105 ir ilgaam\u017ei\u0161kum\u0105 veikiant apkrovai. Siekdami u\u017etikrinti kokyb\u0119 ir nuoseklum\u0105, gamintojai ir kokyb\u0117s kontrol\u0117s grup\u0117s da\u017enai remiasi ASTM D882 standartu, kuris yra visuotinai pripa\u017eintas standartas, skirtas nustatyti, ar [...]","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1202","post","type-post","status-publish","format-standard","hentry","category-wrap-film-test"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Test Wrap Stretch Film per ASTM D882 Guidelines - Wrap Film Test<\/title>\n<meta name=\"description\" content=\"Discover how to perform wrap stretch film testing. 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