{"id":9878,"date":"2026-02-24T15:11:46","date_gmt":"2026-02-24T07:11:46","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d2659\/"},"modified":"2026-03-12T09:35:43","modified_gmt":"2026-03-12T01:35:43","slug":"astm-d2659","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/ro\/standard\/astm-d2659\/","title":{"rendered":"ASTM D2659"},"content":{"rendered":"<p>ASTM D2659 se concentreaz\u0103 pe <strong>\u00eencerc\u0103ri de strivire a coloanelor la o rat\u0103 constant\u0103 de deformare prin compresiune<\/strong>. De\u0219i a fost dezvoltat\u0103 ini\u021bial pentru recipientele turnate prin suflare, procedura se aplic\u0103 \u0219i recipientelor fabricate prin termoformare sau turnare prin injec\u021bie, cu condi\u021bia ca geometria s\u0103 permit\u0103 alinierea \u0219i \u00eenc\u0103rcarea corespunz\u0103toare.<\/p>\n\n\n\n<p>Standardul evalueaz\u0103 modul \u00een care un container rezist\u0103 compresiei verticale de-a lungul axei sale centrale. Aceast\u0103 condi\u021bie de \u00eenc\u0103rcare reflect\u0103 \u00eendeaproape solicit\u0103rile din lumea real\u0103 \u00een timpul stivuirii pale\u021bilor sau al acumul\u0103rii pe transportoare. Datorit\u0103 acestei relevan\u021be, ASTM D2659 a devenit o metod\u0103 de referin\u021b\u0103 \u00een controlul calit\u0103\u021bii \u0219i cercetarea \u0219i dezvoltarea sticlelor PET.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">De ce ASTM D2659 este important pentru controlul calit\u0103\u021bii sticlelor PET<\/h2>\n\n\n\n<p>ASTM D2659 nu \u00eencearc\u0103 s\u0103 simuleze toate condi\u021biile din via\u021ba real\u0103. \u00cen schimb, acesta prevede <strong>date comparabile \u0219i repetabile<\/strong> \u00een condi\u021bii de laborator definite. \u00cen conformitate cu standardul, rezultatele de strivire a coloanelor sus\u021bin:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cercetare \u0219i dezvoltare<\/strong>, cum ar fi u\u0219urarea sticlelor PET<\/li>\n\n\n\n<li><strong>Evaluarea designului<\/strong>, compar\u00e2nd diferite geometrii ale recipientelor<\/li>\n\n\n\n<li><strong>Controlul calit\u0103\u021bii<\/strong>, asigur\u00e2nd consecven\u021ba de la lot la lot<\/li>\n\n\n\n<li><strong>Acceptare sau respingere<\/strong> \u00een conformitate cu specifica\u021biile tehnice<\/li>\n<\/ul>\n\n\n\n<p>Este important de re\u021binut c\u0103 rezultatele ob\u021binute \u00een conformitate cu ASTM D2659 se aplic\u0103 numai la condi\u021bii similare de sarcin\u0103 \u0219i timp. Atunci c\u00e2nd containerele sunt supuse unor sarcini sau impacturi pe termen lung, testele suplimentare, cum ar fi testele de fluaj sau de impact, ar trebui s\u0103 completeze datele privind strivirea coloanelor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Propriet\u0103\u021bi mecanice cheie definite \u00een ASTM D2659<\/h2>\n\n\n\n<p>ASTM D2659 specific\u0103 mai mul\u021bi parametri importan\u021bi care descriu comportamentul la strivirea coloanelor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sarcina de rezisten\u021b\u0103 la strivire<\/strong> - sarcina la care deformarea cre\u0219te f\u0103r\u0103 o cre\u0219tere corespunz\u0103toare a for\u021bei<\/li>\n\n\n\n<li><strong>Deflec\u021bie la sarcina de cedare la strivire<\/strong> - deformarea vertical\u0103 la punctul de cedare<\/li>\n\n\n\n<li><strong>Sarcina de strivire la cedare<\/strong> - sarcina maxim\u0103 \u00eenainte de fractur\u0103 sau pr\u0103bu\u0219ire, dup\u0103 caz<\/li>\n\n\n\n<li><strong>Rigiditatea aparent\u0103 la strivire<\/strong> - panta por\u021biunii liniare ini\u021biale a curbei sarcin\u0103-deforma\u021bie<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-82764ef8 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\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<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"Test de for\u021b\u0103 de compresie a \u00eenc\u0103rc\u0103turii superioare a sticlei|Test de strivire pentru sticla PET\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/8DK9Vmq51K4?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><\/div>\n<\/div><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p>Materialele fragile cedeaz\u0103 adesea brusc, ceea ce face ca sarcina de cedare la strivire s\u0103 fie echivalent\u0103 cu sarcina de cedare. Recipientele din PET ductile prezint\u0103, de obicei, o regiune de cedare clar\u0103, care ofer\u0103 informa\u021bii valoroase cu privire la robuste\u021bea proiectului.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Viteza de testare \u0219i influen\u021ba acesteia asupra rezultatelor<\/h2>\n\n\n\n<p>ASTM D2659 define\u0219te strict <strong>viteza de testare<\/strong>, deoarece viteza de \u00eencercare afecteaz\u0103 \u00een mod direct propriet\u0103\u021bile de strivire m\u0103surate. Standardul specific\u0103:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O vitez\u0103 constant\u0103 \u00een cadrul <strong>Varia\u021bia \u00b110%<\/strong><\/li>\n\n\n\n<li>Un interval acceptabil de <strong>12,5 p\u00e2n\u0103 la 50 mm\/min<\/strong><\/li>\n\n\n\n<li>O vitez\u0103 de referin\u021b\u0103 frecvent utilizat\u0103 de <strong>25 \u00b1 2,5 mm\/min<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Studiile round-robin citate \u00een ASTM D2659 arat\u0103 o precizie redus\u0103 \u00een afara acestui interval. Pentru noile modele de sticle PET, testarea la mai multe viteze dezv\u0103luie adesea modul \u00een care rata de deformare influen\u021beaz\u0103 performan\u021ba, ceea ce este deosebit de valoros \u00een timpul optimiz\u0103rii ambalajului.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procedura de testare a sarcinii maxime \u0219i colectarea datelor<\/h2>\n\n\n\n<p>\u00cen timpul test\u0103rii ASTM D2659, operatorul plaseaz\u0103 epruveta \u00eentre platane \u0219i aplic\u0103 sarcina de compresiune la viteza selectat\u0103. Aerisirea corespunz\u0103toare a recipientului este esen\u021bial\u0103 pentru a evita acumularea presiunii interne, care poate afecta precizia \u0219i siguran\u021ba.<\/p>\n\n\n\n<p>Atunci c\u00e2nd este necesar\u0103 caracterizarea complet\u0103, testul \u00eenregistreaz\u0103 o <strong>curba sarcin\u0103-deforma\u021bie<\/strong> p\u00e2n\u0103 la cedare sau rupere. Aceast\u0103 curb\u0103 permite calcularea rigidit\u0103\u021bii \u0219i identificarea tranzi\u021biilor structurale. Pentru controlul de rutin\u0103 al calit\u0103\u021bii, unii utilizatori se concentreaz\u0103 doar pe sarcina de cedare la strivire, care ofer\u0103 totu\u0219i un indicator puternic al consisten\u021bei recipientului.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Interpretarea rezultatelor pentru controlul calit\u0103\u021bii \u0219i proiectare<\/h2>\n\n\n\n<p>Datele ASTM D2659 sus\u021bin obiective multiple, inclusiv:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Compararea modelelor de sticle sau a calit\u0103\u021bii r\u0103\u0219inii<\/li>\n\n\n\n<li>Monitorizarea stabilit\u0103\u021bii produc\u021biei de-a lungul loturilor de turnare<\/li>\n\n\n\n<li>Stabilirea criteriilor de acceptare sau de respingere<\/li>\n\n\n\n<li>Sprijinirea optimiz\u0103rii R&amp;D a containerelor u\u0219oare<\/li>\n<\/ul>\n\n\n\n<p>Standardul subliniaz\u0103 faptul c\u0103 rezultatele se aplic\u0103 numai \u00een condi\u021bii similare configura\u021biei de testare. Pentru aplica\u021biile care implic\u0103 \u00eenc\u0103rc\u0103ri pe termen lung sau solicit\u0103ri dinamice, r\u0103m\u00e2n necesare \u00eencerc\u0103ri complementare precum fluajul sau impactul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alegerea echipamentului potrivit pentru testarea ASTM D2659<\/h2>\n\n\n\n<p>Executarea fiabil\u0103 a <a href=\"https:\/\/store.astm.org\/d2659-16r23.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D2659<\/a> depinde de controlul precis al for\u021bei, deplas\u0103rii \u0219i vitezei. Modelul <strong>Instrumente celulare <a href=\"https:\/\/www.packqc.com\/ro\/products\/top-load-tester-bottle-crush-testing-machine\/\">Tester de \u00eenc\u0103rcare superioar\u0103 TLT-01<\/a><\/strong> sprijin\u0103 testele de strivire a coloanelor \u0219i de \u00eenc\u0103rcare superioar\u0103, oferind o compresie stabil\u0103, o m\u0103surare precis\u0103 a deplas\u0103rii \u0219i set\u0103ri flexibile ale vitezei \u00een \u00eentreaga gam\u0103 ASTM D2659 \u0219i dincolo de aceasta. Principiul s\u0103u de \u00eenc\u0103rcare vertical\u0103 corespunde cerin\u021belor standardului, acomod\u00e2ndu-se \u00een acela\u0219i timp cu diferite \u00een\u0103l\u021bimi \u0219i diametre ale sticlelor PET.<\/p>\n\n\n\n<p>Pentru laboratoarele care caut\u0103 rezultate repetabile ale testelor de compresie a sticlelor PET, un astfel de echipament ajut\u0103 la transpunerea ASTM D2659 dintr-un standard scris \u00een date coerente \u0219i verificabile.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D2659 focuses on column crush testing under a constant rate of compressive deflection. Although it was originally developed for blow-molded containers, the procedure also applies to containers made by thermoforming or injection molding, provided the geometry allows proper alignment and loading. The standard evaluates how a container resists vertical compression along its central axis. [&hellip;]<\/p>","protected":false},"featured_media":9659,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[],"class_list":["post-9878","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/standard\/9878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/media\/9659"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/media?parent=9878"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/ro\/wp-json\/wp\/v2\/standard-category?post=9878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}