{"id":100,"date":"2025-12-24T08:27:09","date_gmt":"2025-12-24T08:27:09","guid":{"rendered":"https:\/\/www.impacttesting.net\/?p=100"},"modified":"2025-12-24T08:27:11","modified_gmt":"2025-12-24T08:27:11","slug":"dart-impact-testing-of-polyethylene-film","status":"publish","type":"post","link":"https:\/\/www.impacttesting.net\/ro\/dart-impact-testing-of-polyethylene-film\/","title":{"rendered":"Testarea impactului cu s\u0103ge\u021bi a foliei de polietilen\u0103: Ghidul ASTM D1709"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Testarea impactului cu s\u0103ge\u021bi a filmului de polietilen\u0103 conform ASTM D1709<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Introducere \u00een testarea la impact cu s\u0103ge\u021bi a foliei de polietilen\u0103<\/h2>\n\n\n\n<p>Filmele de polietilen\u0103 sunt utilizate pe scar\u0103 larg\u0103 \u00een ambalaje datorit\u0103 durabilit\u0103\u021bii, flexibilit\u0103\u021bii \u0219i caracteristicilor lor u\u0219oare. Cu toate acestea, pentru a asigura performan\u021ba \u00een timpul transportului \u0219i manipul\u0103rii, este esen\u021bial\u0103 \u00een\u021belegerea comportamentului lor mecanic - \u00een special \u00een cazul unui impact brusc.&nbsp;<strong>Testarea impactului cu s\u0103ge\u021bi a foliei de polietilen\u0103<\/strong>&nbsp;ofer\u0103 o modalitate fiabil\u0103 de evaluare a rezisten\u021bei unui film la rupere atunci c\u00e2nd este lovit de o s\u0103geat\u0103 \u00een c\u0103dere liber\u0103. Unul dintre cele mai recunoscute standarde pentru aceast\u0103 evaluare este&nbsp;<a href=\"https:\/\/www.impacttesting.net\/ro\/astm-d1709\/\"><strong>ASTM D1709<\/strong><\/a>, care define\u0219te metodologia \u0219i aparatura pentru&nbsp;<strong>test cu s\u0103ge\u021bi de impact<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prezentare general\u0103 a ASTM D1709 \u0219i a metodelor de testare a s\u0103ge\u021bii de impact<\/h2>\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=\"Tester de impact cu s\u0103ge\u021bi c\u0103z\u0103toare pe folie \u0219i foaie platic\u0103 Metoda A \u0219i metoda B ASTM D1709 ISO 7765-1\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/a3_9M0x3w7U?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>ASTM D1709 prezint\u0103 dou\u0103 proceduri standardizate-<strong>Metoda de testare A<\/strong>&nbsp;\u0219i&nbsp;<strong>Metoda de testare B<\/strong>-pentru a determina&nbsp;<strong>rezisten\u021b\u0103 la impact<\/strong>&nbsp;a filmelor din plastic. Aceste metode implic\u0103 aruncarea unei s\u0103ge\u021bi semisferice pe o prob\u0103 de film fixat\u0103 \u0219i evaluarea defec\u021biunii \u00een condi\u021bii definite.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda de testare A<\/strong>\u00a0utilizeaz\u0103 un\u00a0<strong>Cap de s\u0103geat\u0103 de 38,10 mm<\/strong>\u00a0a sc\u0103zut de la\u00a0<strong>0,66 metri<\/strong>, aplicabil pentru filmele care se \u00eencadreaz\u0103 \u00een\u00a0<strong>50 g p\u00e2n\u0103 la 6 kg<\/strong>.<\/li>\n\n\n\n<li><strong>Metoda de testare B<\/strong>\u00a0utilizeaz\u0103 un\u00a0<strong>Cap de s\u0103geat\u0103 50.80 mm<\/strong>\u00a0a sc\u0103zut de la\u00a0<strong>1,52 metri<\/strong>, potrivit pentru\u00a0<strong>0,3 kg p\u00e2n\u0103 la 6 kg<\/strong>\u00a0nivelurile de impact.<\/li>\n<\/ul>\n\n\n\n<p>Rezultatul principal este&nbsp;<strong>greutatea de cedare la impact (WF)<\/strong>-greutatea la care 50% din specimenele testate cedeaz\u0103, oferind o m\u0103sur\u0103 cantitativ\u0103 a rezisten\u021bei la impact a filmului.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Configurarea testului \u0219i condi\u021bionarea probei<\/h2>\n\n\n\n<p>Condi\u021bionarea adecvat\u0103 \u0219i preg\u0103tirea probei asigur\u0103 acurate\u021bea \u0219i repetabilitatea testului. \u00cen conformitate cu ASTM D1709:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Filme de stare<\/strong>\u00a0la\u00a0<strong>23\u00b0C \u00b12\u00b0C<\/strong>\u00a0\u0219i\u00a0<strong>50% \u00b110% RH<\/strong>\u00a0pentru cel pu\u021bin\u00a0<strong>40 de ore<\/strong>\u00a0\u00eenainte de testare.<\/li>\n\n\n\n<li><strong>Specimene<\/strong>\u00a0nu trebuie s\u0103 prezinte defecte (g\u0103uri, pliuri sau riduri) \u0219i trebuie s\u0103 fie suficient de mare pentru a dep\u0103\u0219i garniturile clemei.<\/li>\n\n\n\n<li>Alege\u021bi metoda de testare (A sau B) pe baza intervalului de rezisten\u021b\u0103 preconizat al peliculei.<\/li>\n<\/ul>\n\n\n\n<p>Pentru rezultate fiabile, testarea trebuie efectuat\u0103 \u00eentr-un mediu controlat, utiliz\u00e2nd echipamente calibrate \u0219i aliniate corespunz\u0103tor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procedura de testare a impactului s\u0103ge\u021bii: Metoda sc\u0103rii vs. metoda grupului<\/h2>\n\n\n\n<p>Dou\u0103 tehnici sunt permise \u00een temeiul&nbsp;<a href=\"https:\/\/store.astm.org\/d1709-22.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D1709<\/a>: the&nbsp;<strong>scara (sus\/jos)<\/strong>&nbsp;\u0219i metoda&nbsp;<strong>grup alternativ<\/strong>&nbsp;Metoda. Ambele au ca scop g\u0103sirea greut\u0103\u021bii s\u0103ge\u021bii care cauzeaz\u0103 e\u0219ecul a 50% din e\u0219antioane.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda sc\u0103rii<\/strong>: Ajusta\u021bi greutatea s\u0103ge\u021bii \u00een mod progresiv dup\u0103 fiecare \u00eencercare, \u00een func\u021bie de reu\u0219ita sau e\u0219ecul probei anterioare. Testarea continu\u0103 p\u00e2n\u0103 c\u00e2nd\u00a0<strong>10 e\u0219ecuri \u0219i 10 ne-e\u0219ecuri<\/strong>\u00a0sunt ob\u021binute.<\/li>\n\n\n\n<li><strong>Metoda grupului<\/strong>: Probe de testare \u00een\u00a0<strong>grupuri de 10<\/strong>\u00a0la aceea\u0219i greutate, apoi se schimb\u0103 masa s\u0103ge\u021bii pentru urm\u0103torul grup. Aceast\u0103 metod\u0103 necesit\u0103 cel pu\u021bin cinci puncte de date care variaz\u0103 de la\u00a0<strong>0% p\u00e2n\u0103 la 100% e\u0219ecuri<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>WF (greutatea de cedare la impact)<\/strong>&nbsp;se calculeaz\u0103 matematic sau prin interpolare grafic\u0103 pentru a identifica greutatea care corespunde unei rate de e\u0219ec 50%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">De ce este important\u0103 testarea la impact cu s\u0103ge\u021bi a foliei de polietilen\u0103<\/h2>\n\n\n\n<p>Acest test simuleaz\u0103 scenarii reale, cum ar fi c\u0103deri \u00een timpul transportului sau \u00eenc\u0103rc\u0103rii, ajut\u00e2nd produc\u0103torii:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Selectarea grosimii peliculei \u0219i a formul\u0103rilor adecvate<\/li>\n\n\n\n<li>Prezice\u021bi performan\u021ba pe teren<\/li>\n\n\n\n<li>Asigura\u021bi protec\u021bia produsului \u00een timpul transportului<\/li>\n\n\n\n<li>\u00cen conformitate cu\u00a0<strong>standarde industriale \u0219i de reglementare<\/strong><\/li>\n<\/ul>\n\n\n\n<p>De asemenea, ajut\u0103 la&nbsp;<strong>asigurarea calit\u0103\u021bii<\/strong>&nbsp;\u0219i&nbsp;<strong>CERCETARE \u0218I DEZVOLTARE<\/strong>&nbsp;prin identificarea sl\u0103biciunilor mecanice \u00eenainte ca ambalajul s\u0103 intre \u00een produc\u021bie sau \u00een lan\u021bul de aprovizionare.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alegerea echipamentului potrivit: FDT-01 Tester de impact pentru s\u0103ge\u021bi de la Cell Instruments<\/h2>\n\n\n\n<figure class=\"wp-block-image alignleft size-full\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709.webp\" alt=\"Testarea impactului cu s\u0103ge\u021bi a filmului de polietilen\u0103 conform ASTM D1709\" class=\"wp-image-104\" srcset=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709.webp 600w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709-400x400.webp 400w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709-280x280.webp 280w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p>Pentru a executa&nbsp;<strong>testarea la impact cu s\u0103ge\u021bi a foliei de polietilen\u0103<\/strong>&nbsp;\u00een conformitate cu&nbsp;<strong>ASTM D1709<\/strong>, precizia \u0219i fiabilitatea echipamentelor de testare sunt esen\u021biale.&nbsp;<strong>Cell Instruments&nbsp;<a href=\"https:\/\/www.impacttesting.net\/ro\/falling-dart-impact-tester\/\">FDT-01<\/a>&nbsp;Tester de impact Dart<\/strong>&nbsp;este proiectat special pentru acest scop, oferind:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suport pentru ambele metode de testare A \u0219i B<\/strong><\/li>\n\n\n\n<li><strong>\u00cen\u0103l\u021bimi \u0219i capete reglabile pentru eliberarea s\u0103ge\u021bilor<\/strong><\/li>\n\n\n\n<li><strong>Interfe\u021be u\u0219or de utilizat<\/strong>\u00a0pentru configurarea rapid\u0103 \u0219i \u00eenregistrarea datelor<\/li>\n\n\n\n<li><strong>Design conform<\/strong>\u00a0cu standardele ASTM \u0219i ISO<\/li>\n<\/ul>\n\n\n\n<p>Fie c\u0103 lucra\u021bi \u00een domeniul cercet\u0103rii \u0219i dezvolt\u0103rii ambalajelor, al controlului calit\u0103\u021bii sau al produc\u021biei,&nbsp;<strong>FDT-01<\/strong>&nbsp;asigur\u0103 ob\u021binerea unor rezultate consecvente, reproductibile, esen\u021biale pentru luarea deciziilor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cele mai bune practici \u0219i considera\u021bii<\/h2>\n\n\n\n<p>Pentru a maximiza eficien\u021ba test\u0103rii impactului s\u0103ge\u021bii:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00centotdeauna\u00a0<strong>verifica\u021bi starea capului dart<\/strong>\u00a0pentru zg\u00e2rieturi sau uzur\u0103.<\/li>\n\n\n\n<li>Asigura\u021bi\u00a0<strong>aliniere precis\u0103<\/strong>\u00a0a s\u0103ge\u021bii pentru un impact centrat.<\/li>\n\n\n\n<li><strong>Evita\u021bi excesul de voce pasiv\u0103<\/strong>\u00a0\u00een raportare pentru a men\u021bine claritatea.<\/li>\n\n\n\n<li>\u00cenregistra\u021bi sistematic toate rezultatele pentru a calcula WF cu precizie.<\/li>\n<\/ul>\n\n\n\n<p>Re\u021bine\u021bi c\u0103&nbsp;<strong>rezultatele testelor depind \u00een mare m\u0103sur\u0103 de propriet\u0103\u021bile materialelor<\/strong>, inclusiv grosimea, claritatea, aditivii \u0219i uniformitatea. Compara\u021bi datele numai cu filme cu structur\u0103 \u0219i grosime similare (\u00b125%) pentru a asigura o analiz\u0103 comparativ\u0103 valabil\u0103.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Concluzie<\/h2>\n\n\n\n<p>\u00cen\u021belegerea \u0219i aplicarea&nbsp;<strong>testarea la impact cu s\u0103ge\u021bi a foliei de polietilen\u0103<\/strong>&nbsp;folosind&nbsp;<strong>ASTM D1709<\/strong>&nbsp;se asigur\u0103 c\u0103 materialele de ambalare \u00eendeplinesc cerin\u021bele riguroase privind rezisten\u021ba la impact. Prin utilizarea de teste standardizate \u0219i instrumente de precizie precum&nbsp;<strong><a href=\"https:\/\/www.impacttesting.net\/ro\/\">Cell Instruments<\/a>&nbsp;FDT-01<\/strong>, profesioni\u0219tii din domeniul ambal\u0103rii pot valida cu \u00eencredere durabilitatea filmului, pot reduce pierderile de produse \u0219i pot spori satisfac\u021bia utilizatorului final.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00centreb\u0103ri frecvente<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u00a0Ce m\u0103soar\u0103 testul de impact cu s\u0103ge\u021bi \u00een foliile de polietilen\u0103?<\/strong><br>Acesta m\u0103soar\u0103 energia necesar\u0103 pentru a provoca cedarea (ruperea) unui film sub o s\u0103geat\u0103 \u00een c\u0103dere liber\u0103, exprimat\u0103 ca greutate care provoac\u0103 cedarea 50%.<\/li>\n\n\n\n<li><strong>\u00a0Care este diferen\u021ba dintre metoda de testare A \u0219i B din ASTM D1709?<\/strong><br>Metoda A utilizeaz\u0103 o s\u0103geat\u0103 mai mic\u0103 (38,10 mm) aruncat\u0103 de la 0,66 m, \u00een timp ce metoda B utilizeaz\u0103 o s\u0103geat\u0103 mai mare (50,80 mm) aruncat\u0103 de la 1,52 m, acoperind intervale diferite de rezisten\u021b\u0103 a filmului.<\/li>\n\n\n\n<li><strong>\u00a0De ce metoda sc\u0103rii este adesea preferat\u0103 \u00een testele de impact cu s\u0103ge\u021bi?<\/strong><br>Ofer\u0103 o determinare mai eficient\u0103 a greut\u0103\u021bii de cedare a 50% cu mai pu\u021bine specimene comparativ cu testarea \u00een grup cu greutate fix\u0103.<\/li>\n\n\n\n<li><strong>\u00a0Cum ar trebui s\u0103 condi\u021bionez probele de folie de polietilen\u0103 \u00eenainte de testare?<\/strong><br>Condi\u021biona\u021bi la 23\u00b0C \u00b12\u00b0C \u0219i 50% \u00b110% RH timp de cel pu\u021bin 40 de ore pentru a stabiliza propriet\u0103\u021bile filmului \u00eenainte de testare.<\/li>\n\n\n\n<li><strong>\u00a0Pot fi comparate rezultatele impactului s\u0103ge\u021bii \u00eentre diferite tipuri de folii?<\/strong><br>Ar trebui comparate numai peliculele cu structur\u0103 \u0219i grosime similare (\u00een interval de \u00b125%), deoarece formula \u0219i grosimea afecteaz\u0103 \u00een mod semnificativ performan\u021ba la impact.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>Dart Impact Testing of Polyethylene Film per ASTM D1709 Introduction to Dart Impact Testing of Polyethylene Film Polyethylene films are widely used in packaging due to their durability, flexibility, and lightweight characteristics. However, to ensure performance during shipping and handling, understanding their mechanical behavior\u2014particularly under sudden impact\u2014is essential.&nbsp;Dart impact testing of polyethylene film&nbsp;offers a reliable [&#8230;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-100","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/posts\/100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":2,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":105,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/posts\/100\/revisions\/105"}],"wp:attachment":[{"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.impacttesting.net\/ro\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}