{"id":10305,"date":"2026-04-22T16:23:36","date_gmt":"2026-04-22T08:23:36","guid":{"rendered":"https:\/\/www.packqc.com\/?post_type=standard&#038;p=10305"},"modified":"2026-04-22T16:23:37","modified_gmt":"2026-04-22T08:23:37","slug":"astm-d2732","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/hu\/standard\/astm-d2732\/","title":{"rendered":"ASTM D2732"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Mi az ASTM D2732 \u00e9s mi\u00e9rt fontos?<\/h2>\n\n\n\n<p><strong>ASTM D2732<\/strong> szabv\u00e1nyos\u00edtott megk\u00f6zel\u00edt\u00e9st hat\u00e1roz meg a <strong>korl\u00e1tlan line\u00e1ris h\u0151zsugorod\u00e1s<\/strong> m\u0171anyag f\u00f3lia \u00e9s f\u00f3lia (\u22640,76 mm vastags\u00e1g\u00fa). Gyakorlatilag ez a m\u00f3dszer azt m\u00e9ri, hogy a f\u00f3lia mennyire h\u00faz\u00f3dik \u00f6ssze, amikor megemelkedett h\u0151m\u00e9rs\u00e9kletnek van kit\u00e9ve. <strong>k\u00fcls\u0151 korl\u00e1toz\u00e1sok n\u00e9lk\u00fcl<\/strong>.<\/p>\n\n\n\n<p>A f\u00f3liagy\u00e1rt\u00e1s sor\u00e1n - p\u00e9ld\u00e1ul extrud\u00e1l\u00e1s vagy orient\u00e1l\u00e1s sor\u00e1n -<strong>bels\u0151 fesz\u00fclts\u00e9gek ker\u00fclnek az anyagszerkezetbe<\/strong>. H\u0151 hat\u00e1s\u00e1ra ezek a fesz\u00fclts\u00e9gek ellazulnak, ami m\u00e9retbeli zsugorod\u00e1shoz vezet. Ennek a viselked\u00e9snek a meg\u00e9rt\u00e9se kritikus fontoss\u00e1g\u00fa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Csomagol\u00e1s integrit\u00e1sa<\/strong> (pl. zsugorf\u00f3li\u00e1k, c\u00edmk\u00e9k)<\/li>\n\n\n\n<li><strong>T\u00f6m\u00edt\u00e9si teljes\u00edtm\u00e9ny az orvosi csomagol\u00e1sokban<\/strong><\/li>\n\n\n\n<li><strong>M\u00e9retstabilit\u00e1s az ipari filmekben<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>Az ASTM D2732 ism\u00e9telhet\u0151 keretrendszert biztos\u00edt<\/strong> a zsugorod\u00e1s m\u00e9r\u00e9s\u00e9re k\u00fcl\u00f6nb\u00f6z\u0151 h\u0151m\u00e9rs\u00e9kleteken, lehet\u0151v\u00e9 t\u00e9ve a m\u00e9rn\u00f6k\u00f6k \u00e9s a min\u0151s\u00e9gellen\u0151rz\u0151 csapatok sz\u00e1m\u00e1ra, hogy a teljes\u00edtm\u00e9nyt a feldolgoz\u00e1si k\u00f6r\u00fclm\u00e9nyekkel korrel\u00e1lj\u00e1k.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">H\u0151zsugor\u00edt\u00e1s vizsg\u00e1lati m\u00f3dszer<\/h2>\n\n\n\n<p>A <strong>h\u0151zsugorod\u00e1si vizsg\u00e1lati m\u00f3dszer<\/strong> az ASTM D2732 szabv\u00e1nyban le\u00edrt m\u00f3dszer a folyad\u00e9kf\u00fcrd\u0151s k\u00f6rnyezetben t\u00f6rt\u00e9n\u0151 ellen\u0151rz\u00f6tt h\u0151terhel\u00e9sre \u00f6sszpontos\u00edt.<\/p>\n\n\n\n<p>A legfontosabb m\u0171szaki alapelvek a k\u00f6vetkez\u0151k:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Korl\u00e1tlan \u00e1llapot:<\/strong> A mintadarabnak mechanikai beavatkoz\u00e1s n\u00e9lk\u00fcl, szabadon kell zsugorodnia.<\/li>\n\n\n\n<li><strong>Termikus egyens\u00faly:<\/strong> A maxim\u00e1lis zsugorod\u00e1s el\u00e9r\u00e9s\u00e9hez a mintadarabnak stabil h\u0151m\u00e9rs\u00e9kletet kell el\u00e9rnie.<\/li>\n\n\n\n<li><strong>K\u00e9tir\u00e1ny\u00fa m\u00e9r\u00e9s:<\/strong> A zsugorod\u00e1st mind a <strong>g\u00e9pir\u00e1ny (MD)<\/strong> \u00e9s <strong>keresztir\u00e1ny\u00fa (TD)<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Kritikus betekint\u00e9s:<\/strong> A zsugorod\u00e1s nem \u00e1lland\u00f3 - a h\u0151m\u00e9rs\u00e9klet f\u00fcggv\u00e9ny\u00e9ben jelent\u0151sen v\u00e1ltozik. Ez\u00e9rt a t\u00f6bb h\u0151m\u00e9rs\u00e9kleti ponton v\u00e9gzett vizsg\u00e1lat biztos\u00edtja a <strong>zsugorod\u00e1si profil<\/strong>, nem csak egyetlen \u00e9rt\u00e9ket.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zsugorod\u00e1si vizsg\u00e1lati elj\u00e1r\u00e1s<\/h2>\n\n\n\n<p>Egy szabv\u00e1nyos\u00edtott <strong>zsugorod\u00e1si vizsg\u00e1lati elj\u00e1r\u00e1s<\/strong> biztos\u00edtja a pontoss\u00e1got \u00e9s a reproduk\u00e1lhat\u00f3s\u00e1got:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Minta el\u0151k\u00e9sz\u00edt\u00e9se<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00e1gja <strong>100 mm \u00d7 100 mm-es mint\u00e1k<\/strong><\/li>\n\n\n\n<li>Haszn\u00e1ljon legal\u00e1bb <strong>k\u00e9t pr\u00f3badarab vizsg\u00e1lati h\u0151m\u00e9rs\u00e9kletenk\u00e9nt<\/strong><\/li>\n\n\n\n<li>Sz\u00fcks\u00e9g eset\u00e9n jel\u00f6lje meg a g\u00e9p ir\u00e1ny\u00e1t<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Teszt v\u00e9grehajt\u00e1sa<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Helyezze a mint\u00e1t egy <strong>ingyenes zsugortart\u00f3<\/strong> a korl\u00e1toz\u00e1s elker\u00fcl\u00e9se \u00e9rdek\u00e9ben<\/li>\n\n\n\n<li>A f\u00fcrd\u0151 h\u0151m\u00e9rs\u00e9klet\u00e9nek r\u00f6gz\u00edt\u00e9se a mer\u00edt\u00e9s el\u0151tt<\/li>\n\n\n\n<li>Mer\u00edtse a mint\u00e1t <strong>~10 m\u00e1sodperc<\/strong> (vagy am\u00edg egyens\u00falyba nem ker\u00fcl)<\/li>\n\n\n\n<li>Azonnal tegy\u00fck \u00e1t h\u0171t\u0151k\u00f6zegbe<\/li>\n\n\n\n<li>M\u00e9rje meg a v\u00e9gleges m\u00e9reteket a stabiliz\u00e1l\u00e1s ut\u00e1n<\/li>\n<\/ol>\n\n\n\n<p><strong>Fontos \u00f3vint\u00e9zked\u00e9sek:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ker\u00fclje a minta el\u0151meleg\u00edt\u00e9s\u00e9t a bemer\u00edt\u00e9s el\u0151tt.<\/li>\n\n\n\n<li>Megakad\u00e1lyozza a minta ny\u00fal\u00e1s\u00e1t a kezel\u00e9s sor\u00e1n<\/li>\n\n\n\n<li>Egyenletes f\u00fcrd\u0151h\u0151m\u00e9rs\u00e9klet-eloszl\u00e1s biztos\u00edt\u00e1sa<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Zsugorod\u00e1s sz\u00e1m\u00edt\u00e1sa<\/h3>\n\n\n\n<p><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>S<\/mi><mi>h<\/mi><mi>r<\/mi><mi>i<\/mi><mi>n<\/mi><mi>k<\/mi><mi>a<\/mi><mi>g<\/mi><mi>e<\/mi><mo stretchy=\"false\">(<\/mo><mi mathvariant=\"normal\">%<\/mi><mo stretchy=\"false\">)<\/mo><mo>=<\/mo><mfrac><mrow><msub><mi>L<\/mi><mn>0<\/mn><\/msub><mo>\u2212<\/mo><msub><mi>L<\/mi><mi>f<\/mi><\/msub><\/mrow><msub><mi>L<\/mi><mn>0<\/mn><\/msub><\/mfrac><mo>\u00d7<\/mo><mn>100<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">Zsugorod\u00e1s(\\%) = \\frac{L_0 - L_f}{L_0} \\szor 100<\/annotation><\/semantics><\/math>Zsugorod\u00e1s(%)=L0L0-Lf\u00d7100<\/p>\n\n\n\n<p>Hol:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msub><mi>L<\/mi><mn>0<\/mn><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">L_0<\/annotation><\/semantics><\/math>L0: Kezdeti hossz (jellemz\u0151en 100 mm)<\/li>\n\n\n\n<li><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msub><mi>L<\/mi><mi>f<\/mi><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">L_f<\/annotation><\/semantics><\/math>Lf: V\u00e9gs\u0151 hossz zsugorod\u00e1s ut\u00e1n<\/li>\n<\/ul>\n\n\n\n<p>Ez a k\u00e9plet biztos\u00edtja a <strong>a line\u00e1ris zsugorod\u00e1s sz\u00e1zal\u00e9kos ar\u00e1nya<\/strong>, amely az anyagok \u00f6sszehasonl\u00edt\u00e1s\u00e1nak \u00e9s a min\u0151s\u00e9gellen\u0151rz\u00e9snek kulcsfontoss\u00e1g\u00fa param\u00e9tere.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Filmmentes zsugorod\u00e1si tesztel\u0151: A vizsg\u00e1lat pontoss\u00e1g\u00e1nak jav\u00edt\u00e1sa<\/h2>\n\n\n\n<p>A <strong><a href=\"https:\/\/www.packqc.com\/hu\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" data-type=\"products\" data-id=\"9536\" rel=\"noreferrer noopener\">filmmentes zsugorod\u00e1si tesztel\u0151<\/a><\/strong> elengedhetetlen az ASTM D2732 nagy pontoss\u00e1g\u00fa v\u00e9grehajt\u00e1s\u00e1hoz. A k\u00e9zi be\u00e1ll\u00edt\u00e1sokkal \u00f6sszehasonl\u00edtva a dedik\u00e1lt m\u0171szerek a k\u00f6vetkez\u0151ket k\u00edn\u00e1lj\u00e1k:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Stabil h\u0151m\u00e9rs\u00e9klet-szab\u00e1lyoz\u00e1s (\u00b10,3\u00b0C)<\/strong><\/li>\n\n\n\n<li><strong>Egyenletes f\u0171t\u00e9s foly\u00e9kony k\u00f6zegen kereszt\u00fcl<\/strong><\/li>\n\n\n\n<li><strong>Ellen\u0151rz\u00f6tt mer\u00edt\u00e9si id\u0151z\u00edt\u00e9s<\/strong><\/li>\n\n\n\n<li><strong>K\u00f6vetkezetes, korl\u00e1tlan felt\u00e9telek<\/strong><\/li>\n<\/ul>\n\n\n\n<p>P\u00e9ld\u00e1ul a <strong>Cell Instruments <a href=\"https:\/\/www.packqc.com\/hu\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">FST-01 Filmmentes zsugorod\u00e1si teszter<\/a><\/strong> lehet\u0151v\u00e9 teszi a laborat\u00f3riumok sz\u00e1m\u00e1ra, hogy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Val\u00f3s zsugorod\u00e1si k\u00f6r\u00fclm\u00e9nyek szimul\u00e1l\u00e1sa<\/li>\n\n\n\n<li>Megism\u00e9telhet\u0151 zsugorod\u00e1si adatok el\u0151\u00e1ll\u00edt\u00e1sa<\/li>\n\n\n\n<li>Cs\u00f6kkentse a kezel\u0151 \u00e1ltal okozott v\u00e1ltoz\u00e9konys\u00e1got<\/li>\n<\/ul>\n\n\n\n<p>A <strong>PID-vez\u00e9rl\u00e9s\u0171 f\u0171t\u00e9si rendszer \u00e9s szabv\u00e1nyos\u00edtott szerelv\u00e9nyek<\/strong> biztos\u00edtja az ASTM D2732 szabv\u00e1nynak val\u00f3 megfelel\u00e9st, mik\u00f6zben jav\u00edtja a m\u0171k\u00f6d\u00e9si hat\u00e9konys\u00e1got.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Az ASTM D2732 eredm\u00e9nyeket befoly\u00e1sol\u00f3 legfontosabb t\u00e9nyez\u0151k<\/h2>\n\n\n\n<p>Az eredm\u00e9nyek helyes \u00e9rtelmez\u00e9s\u00e9hez vegye figyelembe a k\u00f6vetkez\u0151 v\u00e1ltoz\u00f3kat:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Anyag\u00f6sszet\u00e9tel<\/h3>\n\n\n\n<p>A k\u00fcl\u00f6nb\u00f6z\u0151 polimerek (PET, PVC, PE) a molekul\u00e1ris orient\u00e1ci\u00f3 \u00e9s a krist\u00e1lyoss\u00e1g miatt elt\u00e9r\u0151 zsugorod\u00e1si viselked\u00e9st mutatnak.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Feldolgoz\u00e1si el\u0151zm\u00e9nyek<\/h3>\n\n\n\n<p>A film ny\u00fajt\u00e1si ar\u00e1nyai, a h\u0171t\u00e9si sebess\u00e9g \u00e9s a l\u00e1gy\u00edt\u00e1s k\u00f6zvetlen\u00fcl befoly\u00e1solj\u00e1k a <strong>marad\u00f3 fesz\u00fclts\u00e9g szintek<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u0924\u093e\u092ah\u0151m\u00e9rs\u00e9klet kiv\u00e1laszt\u00e1sa<\/h3>\n\n\n\n<p>A t\u00f6bbf\u00e9le h\u0151m\u00e9rs\u00e9kleten v\u00e9gzett tesztel\u00e9s azt mutatja:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A zsugorod\u00e1s kezdete<\/li>\n\n\n\n<li>Maxim\u00e1lis zsugorod\u00e1si pont<\/li>\n\n\n\n<li>Termikus \u00e1tmeneti viselked\u00e9s<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Vastags\u00e1g \u00e9s szerkezet<\/h3>\n\n\n\n<p>A vastagabb vagy t\u00f6bbr\u00e9teg\u0171 filmek hosszabb mer\u00edt\u00e9si id\u0151t ig\u00e9nyelhetnek az egyens\u00faly el\u00e9r\u00e9s\u00e9hez.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GYIK<\/h2>\n\n\n\n<p>1. Milyen anyagok alkalmasak ASTM D2732 vizsg\u00e1latra?<br>\u22640,76 mm vastags\u00e1g\u00fa m\u0171anyag f\u00f3li\u00e1k \u00e9s lemezek, bele\u00e9rtve a PET, PE, PVC \u00e9s a t\u00f6bbr\u00e9teg\u0171 lamin\u00e1tumokat.<\/p>\n\n\n\n<p>2. Mi\u00e9rt fontos a korl\u00e1tlan zsugorod\u00e1s?<br>A k\u00fcls\u0151 er\u0151k n\u00e9lk\u00fcl t\u00fckr\u00f6zi az anyag bels\u0151 viselked\u00e9s\u00e9t, \u00e9s biztos\u00edtja a <strong>val\u00f3di zsugorod\u00e1si jellemz\u0151k<\/strong>.<\/p>\n\n\n\n<p>3. Mennyi ideig kell a mint\u00e1kat bemer\u00edteni?<br>\u00c1ltal\u00e1ban 10 m\u00e1sodperc, de a vastagabb vagy \u00faj anyagokn\u00e1l sz\u00fcks\u00e9g lehet valid\u00e1l\u00e1sra a teljes zsugorod\u00e1s biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben.<\/p>\n\n\n\n<p>4. Mi a k\u00fcl\u00f6nbs\u00e9g az MD \u00e9s a TD zsugorod\u00e1s k\u00f6z\u00f6tt?<br>Az MD (g\u00e9pir\u00e1ny) a filmgy\u00e1rt\u00e1s ir\u00e1ny\u00e1val egy vonalban van, m\u00edg a TD mer\u0151leges r\u00e1 - mindkett\u0151 m\u00e1sk\u00e9pp befoly\u00e1solja a teljes\u00edtm\u00e9nyt.<\/p>\n\n\n\n<p>5. Can <a href=\"https:\/\/store.astm.org\/d2732-14r25.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D2732<\/a> old\u00f3szeres zsugorod\u00e1shoz haszn\u00e1lhat\u00f3?<br>Nem, nem veszi figyelembe az old\u00f3szervesztes\u00e9g okozta zsugorod\u00e1st.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Az ASTM D2732 a m\u0171anyag f\u00f3li\u00e1k korl\u00e1tlan line\u00e1ris h\u0151zsugorod\u00e1s\u00e1t \u00e9rt\u00e9keli a m\u00e9retv\u00e1ltoz\u00e1s m\u00e9r\u00e9s\u00e9vel, ellen\u0151rz\u00f6tt meleg\u00edt\u00e9s ut\u00e1n.<\/p>","protected":false},"featured_media":10306,"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":"disabled","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-10305","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/standard\/10305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/media\/10306"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/media?parent=10305"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/hu\/wp-json\/wp\/v2\/standard-category?post=10305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}