{"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\/lv\/standard\/astm-d2732\/","title":{"rendered":"ASTM D2732"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Kas ir ASTM D2732 un k\u0101p\u0113c tam ir noz\u012bme<\/h2>\n\n\n\n<p><strong>ASTM D2732<\/strong> defin\u0113 standartiz\u0113tu pieeju, lai nov\u0113rt\u0113tu <strong>neierobe\u017eota line\u0101r\u0101 termisk\u0101 sarau\u0161an\u0101s<\/strong> plastmasas pl\u0113ves un pl\u0113ves (\u22640,76 mm biezum\u0101). Praktiski ar \u0161o metodi nosaka, cik \u013coti pl\u0113ve saraujas, kad t\u0101 tiek pak\u013cauta paaugstin\u0101tai temperat\u016brai. <strong>bez \u0101r\u0113jiem ierobe\u017eojumiem<\/strong>.<\/p>\n\n\n\n<p>Pl\u0113ves ra\u017eo\u0161anas laik\u0101, piem\u0113ram, ekstr\u016bzijas vai orient\u0113\u0161anas laik\u0101.<strong>materi\u0101la strukt\u016br\u0101 tiek ieviesti iek\u0161\u0113jie spriegumi.<\/strong>. P\u0113c karstuma pielik\u0161anas \u0161ie spriegumi atsl\u0101bst, izraisot izm\u0113ru sarau\u0161anos. \u0160\u012bs uzved\u012bbas izpratne ir \u013coti svar\u012bga, lai:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Iepakojuma integrit\u0101te<\/strong> (piem., saraucamas pl\u0113ves, eti\u0137etes).<\/li>\n\n\n\n<li><strong>Medic\u012bnisk\u0101 iepakojuma bl\u012bv\u0113juma veiktsp\u0113ja<\/strong><\/li>\n\n\n\n<li><strong>R\u016bpniecisko pl\u0113vju izm\u0113ru stabilit\u0101te<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>ASTM D2732 nodro\u0161ina atk\u0101rtojamu sist\u0113mu<\/strong> lai m\u0113r\u012btu sarau\u0161anos da\u017e\u0101d\u0101s temperat\u016br\u0101s, \u013caujot in\u017eenieriem un kvalit\u0101tes kontroles komand\u0101m sal\u012bdzin\u0101t veiktsp\u0113ju ar apstr\u0101des apst\u0101k\u013ciem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Termisk\u0101s sarau\u0161an\u0101s testa metode<\/h2>\n\n\n\n<p>The <strong>termisk\u0101s sarau\u0161an\u0101s testa metode<\/strong> ASTM D2732 aprakst\u012bt\u0101 metode ir v\u0113rsta uz kontrol\u0113tu termisko iedarb\u012bbu \u0161\u0137idruma vannas vid\u0113.<\/p>\n\n\n\n<p>Galvenie tehniskie principi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Neierobe\u017eots st\u0101voklis:<\/strong> Paraugam ir j\u0101samazin\u0101s br\u012bvi, bez meh\u0101niskas iejauk\u0161an\u0101s.<\/li>\n\n\n\n<li><strong>Siltuma l\u012bdzsvars:<\/strong> Paraugam j\u0101sasniedz stabila temperat\u016bra, lai pan\u0101ktu maksim\u0101lu sarau\u0161anos.<\/li>\n\n\n\n<li><strong>Divvirzienu m\u0113r\u012bjumi:<\/strong> Sarau\u0161an\u0101s tiek nov\u0113rt\u0113ta gan <strong>ma\u0161\u012bnas virziens (MD)<\/strong> un <strong>\u0161\u0137\u0113rsvirzien\u0101 (TD)<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Kritisks ieskats:<\/strong> Sarau\u0161an\u0101s nav konstanta - t\u0101 iev\u0113rojami main\u0101s atkar\u012bb\u0101 no temperat\u016bras. T\u0101p\u0113c test\u0113\u0161ana vair\u0101kos temperat\u016bras punktos nodro\u0161ina <strong>sarau\u0161an\u0101s profils<\/strong>, nevis tikai viena v\u0113rt\u012bba.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sarau\u0161an\u0101s testa proced\u016bra<\/h2>\n\n\n\n<p>Standartiz\u0113ts <strong>sarau\u0161an\u0101s testa proced\u016bra<\/strong> nodro\u0161ina precizit\u0101ti un atk\u0101rtojam\u012bbu:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Parauga sagatavo\u0161ana<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nogrieziet <strong>100 mm \u00d7 100 mm paraugi<\/strong><\/li>\n\n\n\n<li>Izmantojiet vismaz <strong>divi paraugi katrai testa temperat\u016brai<\/strong><\/li>\n\n\n\n<li>Ja nepiecie\u0161ams, atz\u012bm\u0113jiet ma\u0161\u012bnas virzienu<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Testa izpilde<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Ievietojiet paraugu <strong>bezmaksas sarau\u0161an\u0101s tur\u0113t\u0101js<\/strong> lai izvair\u012btos no ierobe\u017eojumiem<\/li>\n\n\n\n<li>Re\u0123istr\u0113jiet vannas temperat\u016bru pirms iegremd\u0113\u0161anas<\/li>\n\n\n\n<li>Iegremd\u0113jiet paraugu uz <strong>~ 10 sekundes<\/strong> (vai l\u012bdz l\u012bdzsvaram)<\/li>\n\n\n\n<li>T\u016bl\u012bt p\u0101rnes uz dzes\u0113\u0161anas l\u012bdzekli.<\/li>\n\n\n\n<li>Gal\u012bgo izm\u0113ru m\u0113r\u012b\u0161ana p\u0113c stabiliz\u0101cijas<\/li>\n<\/ol>\n\n\n\n<p><strong>Svar\u012bgi piesardz\u012bbas pas\u0101kumi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Izvairieties no parauga iepriek\u0161\u0113jas uzsild\u012b\u0161anas pirms iegremd\u0113\u0161anas.<\/li>\n\n\n\n<li>Nov\u0113rst parauga izstiep\u0161anos apstr\u0101des laik\u0101<\/li>\n\n\n\n<li>Vienm\u0113r\u012bga vannas temperat\u016bras sadal\u012bjuma nodro\u0161in\u0101\u0161ana<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sarau\u0161an\u0101s apr\u0113\u0137ins<\/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\">Samazin\u0101\u0161an\u0101s(\\%) = \\frac{L_0 - L_f}{L_0} \\reiz 100<\/annotation><\/semantics><\/math>Samazin\u0101jums(%)=L0L0-Lf\u00d7100<\/p>\n\n\n\n<p>Kur:<\/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: S\u0101kotn\u0113jais garums (parasti 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: Gal\u012bgais garums p\u0113c sarau\u0161an\u0101s<\/li>\n<\/ul>\n\n\n\n<p>\u0160\u012b formula nodro\u0161ina <strong>line\u0101r\u0101s sarau\u0161an\u0101s procentu\u0101l\u0101 da\u013ca<\/strong>, kas ir galvenais parametrs materi\u0101lu sal\u012bdzin\u0101\u0161anai un kvalit\u0101tes kontrolei.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bezpl\u0113ves sarau\u0161an\u0101s testeris: Testa precizit\u0101tes uzlabo\u0161ana<\/h2>\n\n\n\n<p>A <strong><a href=\"https:\/\/www.packqc.com\/lv\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" data-type=\"products\" data-id=\"9536\" rel=\"noreferrer noopener\">pl\u0113ves bez pl\u0113ves sarau\u0161an\u0101s testeris<\/a><\/strong> ir b\u016btiski, lai izpild\u012btu ASTM D2732 ar augstu precizit\u0101ti. Sal\u012bdzinot ar manu\u0101lo iestat\u012b\u0161anu, specializ\u0113tie instrumenti pied\u0101v\u0101:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Stabila temperat\u016bras kontrole (\u00b10,3\u00b0C)<\/strong><\/li>\n\n\n\n<li><strong>Vienm\u0113r\u012bga sild\u012b\u0161ana, izmantojot \u0161\u0137idro vidi<\/strong><\/li>\n\n\n\n<li><strong>Kontrol\u0113ts iegremd\u0113\u0161anas laiks<\/strong><\/li>\n\n\n\n<li><strong>Past\u0101v\u012bgi neierobe\u017eoti apst\u0101k\u013ci<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Piem\u0113ram. <strong>\u0160\u016bnu instrumenti <a href=\"https:\/\/www.packqc.com\/lv\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">FST-01 pl\u0113ves nesa\u0161aurin\u0101m\u0101s sarau\u0161an\u0101s testeris<\/a><\/strong> \u013cauj laboratorij\u0101m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Simul\u0113t re\u0101l\u0101s pasaules sarau\u0161an\u0101s apst\u0101k\u013cus<\/li>\n\n\n\n<li>Atk\u0101rtojamu sarau\u0161an\u0101s datu \u0123ener\u0113\u0161ana<\/li>\n\n\n\n<li>Samazin\u0101t operatora rad\u012bto main\u012bgumu<\/li>\n<\/ul>\n\n\n\n<p>T\u0101s <strong>PID kontrol\u0113ta apkures sist\u0113ma un standartiz\u0113ti \u0137erme\u0146i<\/strong> nodro\u0161ina atbilst\u012bbu ASTM D2732 standartam, vienlaikus uzlabojot darb\u012bbas efektivit\u0101ti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Galvenie faktori, kas ietekm\u0113 ASTM D2732 rezult\u0101tus<\/h2>\n\n\n\n<p>Lai pareizi interpret\u0113tu rezult\u0101tus, \u0146emiet v\u0113r\u0101 \u0161\u0101dus main\u012bgos lielumus:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Materi\u0101lu sast\u0101vs<\/h3>\n\n\n\n<p>Da\u017e\u0101diem polim\u0113riem (PET, PVC, PE) piem\u012bt at\u0161\u0137ir\u012bgas sarau\u0161an\u0101s \u012bpa\u0161\u012bbas, ko nosaka molekul\u0101r\u0101 orient\u0101cija un krist\u0101liskums.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Apstr\u0101des v\u0113sture<\/h3>\n\n\n\n<p>Pl\u0113ves izstiep\u0161anas koeficienti, dzes\u0113\u0161anas \u0101trums un atkv\u0113lin\u0101\u0161ana tie\u0161i ietekm\u0113 <strong>atliku\u0161\u0101 sprieguma l\u012bme\u0146i<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u0924\u093e\u092a Temperat\u016bras izv\u0113le<\/h3>\n\n\n\n<p>Test\u0113\u0161ana vair\u0101k\u0101s temperat\u016br\u0101s atkl\u0101j:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sarau\u0161an\u0101s s\u0101kums<\/li>\n\n\n\n<li>Maksim\u0101lais sarau\u0161an\u0101s punkts<\/li>\n\n\n\n<li>Termisk\u0101s p\u0101rejas uzved\u012bba<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Biezums un strukt\u016bra<\/h3>\n\n\n\n<p>Biez\u0101k\u0101m vai daudzsl\u0101\u0146u pl\u0113v\u0113m var b\u016bt nepiecie\u0161ams ilg\u0101ks iegremd\u0113\u0161anas laiks, lai sasniegtu l\u012bdzsvaru.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<p>1. K\u0101di materi\u0101li ir piem\u0113roti ASTM D2732 test\u0113\u0161anai?<br>Plastmasas pl\u0113ves un loksnes ar biezumu \u2264 0,76 mm, tostarp PET, PE, PVC un daudzsl\u0101\u0146u lamin\u0101ti.<\/p>\n\n\n\n<p>2. K\u0101p\u0113c ir svar\u012bga neierobe\u017eota sarau\u0161an\u0101s?<br>Tas atspogu\u013co materi\u0101lam rakstur\u012bgo uzved\u012bbu bez \u0101r\u0113jiem sp\u0113kiem, nodro\u0161inot. <strong>paties\u0101s sarau\u0161an\u0101s raksturlielumi<\/strong>.<\/p>\n\n\n\n<p>3. Cik ilgi paraugi j\u0101iegremd\u0113?<br>Parasti 10 sekundes, bet biez\u0101kiem vai jauniem materi\u0101liem var b\u016bt nepiecie\u0161ama valid\u0101cija, lai nodro\u0161in\u0101tu piln\u012bgu sarau\u0161anos.<\/p>\n\n\n\n<p>4. K\u0101da ir at\u0161\u0137ir\u012bba starp MD un TD sarau\u0161anos?<br>MD (ma\u0161\u012bnas virziens) sakr\u012bt ar pl\u0113ves ra\u017eo\u0161anas virzienu, bet TD ir perpendikul\u0101rs - abi virzieni ietekm\u0113 veiktsp\u0113ju at\u0161\u0137ir\u012bgi.<\/p>\n\n\n\n<p>5. Vai <a href=\"https:\/\/store.astm.org\/d2732-14r25.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D2732<\/a> var izmantot uz \u0161\u0137\u012bdin\u0101t\u0101ja b\u0101zes veiktai sarau\u0161anai?<br>N\u0113, taj\u0101 nav \u0146emta v\u0113r\u0101 sarau\u0161an\u0101s, ko izraisa \u0161\u0137\u012bdin\u0101t\u0101ja zudumi.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D2732 nov\u0113rt\u0113 plastmasas pl\u0113vju line\u0101ro termisko sarau\u0161anos bez ierobe\u017eojumiem, m\u0113rot izm\u0113ru izmai\u0146as p\u0113c kontrol\u0113tas sild\u012b\u0161anas.<\/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\/lv\/wp-json\/wp\/v2\/standard\/10305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/media\/10306"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/media?parent=10305"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/standard-category?post=10305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}