{"id":3268,"date":"2026-04-22T08:44:19","date_gmt":"2026-04-22T08:44:19","guid":{"rendered":"https:\/\/www.materialstests.com\/?post_type=application&#038;p=3268"},"modified":"2026-04-23T02:13:48","modified_gmt":"2026-04-23T02:13:48","slug":"astm-d2732","status":"publish","type":"application","link":"https:\/\/www.materialstests.com\/lv\/application\/astm-d2732.html","title":{"rendered":"ASTM D2732"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Izpratne par standartu ASTM D2732 un t\u0101 noz\u012bmi pl\u0113ves veiktsp\u0113j\u0101<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D2732<\/strong> defin\u0113 standartiz\u0113tu metodi, lai nov\u0113rt\u0113tu <em>neierobe\u017eota line\u0101r\u0101 termisk\u0101 sarau\u0161an\u0101s<\/em> plastmasas pl\u0113ves un pl\u0113ves ar biezumu \u22640,76 mm. \u0160ai metodei ir iz\u0161\u0137iro\u0161a noz\u012bme, lai nov\u0113rt\u0113tu pl\u0113vju uzved\u012bbu karstuma ietekm\u0113 - b\u016btisks parametrs iepakojuma, medic\u012bnas un r\u016bpniec\u012bbas lietojumos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pl\u0113ves ra\u017eo\u0161anas laik\u0101 ra\u017eot\u0101ji bie\u017ei ievie\u0161 iek\u0161\u0113jos spriegumus, izmantojot stiep\u0161anas vai orient\u0113\u0161anas procesus. Pak\u013cauti paaugstin\u0101tai temperat\u016brai, \u0161ie spriegumi atbr\u012bvojas, izraisot izm\u0113ru sarau\u0161anos. ASTM D2732 standarts nodro\u0161ina kontrol\u0113tu sist\u0113mu, lai prec\u012bzi kvantitat\u012bvi nov\u0113rt\u0113tu \u0161o uzved\u012bbu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160ie dati \u013cauj in\u017eenieriem un kvalit\u0101tes kontroles komand\u0101m prognoz\u0113t veiktsp\u0113ju re\u0101los termiskos apst\u0101k\u013cos, nodro\u0161inot, ka materi\u0101li atbilst lietojuma pras\u012bb\u0101m bez deform\u0101cijas, boj\u0101jumiem vai bl\u012bv\u0113juma probl\u0113m\u0101m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sarau\u0161an\u0101s test\u0113\u0161ana un sarau\u0161an\u0101s pl\u0113ves testeris<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sarau\u0161an\u0101s test\u0113\u0161ana<\/strong> Saska\u0146\u0101 ar ASTM D2732 standartu pl\u0113ves paraugus iegremd\u0113 kars\u0113t\u0101 \u0161\u0137idr\u0101 vid\u0113, lai nov\u0113rotu izm\u0113ru izmai\u0146as. Uzticams <strong>sarau\u0161an\u0101s pl\u0113ves testeris<\/strong> nodro\u0161ina vienm\u0113r\u012bgu temperat\u016bras kontroli un atk\u0101rtojamus rezult\u0101tus.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Galvenie test\u0113\u0161anas principi ir \u0161\u0101di:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Neierobe\u017eots st\u0101voklis:<\/strong> Paraugam j\u0101samazin\u0101s br\u012bvi bez \u0101r\u0113jiem sp\u0113kiem.<\/li>\n\n\n\n<li><strong>Siltuma l\u012bdzsvars:<\/strong> Iegremd\u0113\u0161anas laik\u0101 paraugam j\u0101sasniedz stabila temperat\u016bra.<\/li>\n\n\n\n<li><strong>Virziena m\u0113r\u012bjumi:<\/strong> Sarau\u0161an\u0101s tiek re\u0123istr\u0113ta gan ma\u0161\u012bnas virzien\u0101 (MD), gan \u0161\u0137\u0113rsvirzien\u0101 (TD).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Specializ\u0113ts instruments, piem. <strong>FST-01 pl\u0113ves nesa\u0161aurin\u0101m\u0101s sarau\u0161an\u0101s testeris<\/strong> iev\u0113rojami uzlabo test\u0113\u0161anas precizit\u0101ti. T\u0101 pied\u0101v\u0101:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PID temperat\u016bras kontrole (\u00b10,3\u00b0C)<\/strong> stabilai apkurei<\/li>\n\n\n\n<li>Viendab\u012bga \u0161\u0137idruma vide, lai nov\u0113rstu temperat\u016bras gradientus<\/li>\n\n\n\n<li>Br\u012bvi saraujami tur\u0113t\u0101ji, lai nov\u0113rstu meh\u0101niskus ierobe\u017eojumus<\/li>\n\n\n\n<li>Prec\u012bzs laika grafiks, lai nodro\u0161in\u0101tu konsekventu uztur\u0113\u0161an\u0101s periodu<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160\u012bs funkcijas tie\u0161i atbilst ASTM D2732 pras\u012bb\u0101m un samazina operatora rad\u012bto main\u012bgumu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Test\u0113\u0161anas proced\u016bra, pamatojoties uz ASTM D2732<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lai nodro\u0161in\u0101tu atbilst\u012bbu un atk\u0101rtojam\u012bbu, laboratorijas iev\u0113ro struktur\u0113tu proced\u016bru:<\/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>Izgrieziet paraugus l\u012bdz <strong>100 mm \u00d7 100 mm<\/strong><\/li>\n\n\n\n<li>Sagatavojiet vismaz divus paraugus katrai testa temperat\u016brai<\/li>\n\n\n\n<li>Ja nepiecie\u0161ams, atz\u012bm\u0113jiet orient\u0101ciju (MD\/TD)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Test\u0113\u0161anas so\u013ci<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Ievietojiet paraugu br\u012bvi saraucam\u0101 tur\u0113t\u0101j\u0101.<\/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 aptuveni <strong>10 sekundes<\/strong><\/li>\n\n\n\n<li>Iz\u0146emiet un nekav\u0113joties atdzes\u0113jiet istabas temperat\u016br\u0101 eso\u0161\u0101 \u0161\u0137idrum\u0101.<\/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<h3 class=\"wp-block-heading\">Svar\u012bgas piez\u012bmes<\/h3>\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>Ja nepiecie\u0161ams, piel\u0101got iegremd\u0113\u0161anas laiku biez\u0101kiem materi\u0101liem.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Sarau\u0161an\u0101s rezult\u0101tu apr\u0113\u0137in\u0101\u0161ana<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D2732 izsaka sarau\u0161anos k\u0101 izm\u0113ru izmai\u0146u procentu\u0101lo daudzumu:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mtext>Sarau\u0161an\u0101s (%)<\/mtext><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\">\\text{Sa\u0161aurin\u0101jums (\\%)} = \\frac{L_0 - L_f}{L_0} \\reiz 100<\/annotation><\/semantics><\/math>Sarau\u0161an\u0101s (%)=L0L0-Lf\u00d7100<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kur:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u2080<\/strong> = S\u0101kotn\u0113jais garums (parasti 100 mm)<\/li>\n\n\n\n<li><strong>L_f<\/strong> = gal\u012bgais garums p\u0113c sarau\u0161an\u0101s<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160is apr\u0113\u0137ins nodro\u0161ina skaidru, kvantitat\u012bvu materi\u0101lu uzved\u012bbas m\u0113r\u012bjumu termisk\u0101s spriedzes apst\u0101k\u013cos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D2732 noz\u012bme kvalit\u0101tes kontrol\u0113<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D2732 sniedz noder\u012bgu ieskatu par:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Apstr\u0101des konsekvence:<\/strong> pl\u0113ves orient\u0101cijas un ra\u017eo\u0161anas apst\u0101k\u013cu izmai\u0146u noteik\u0161ana.<\/li>\n\n\n\n<li><strong>Termisk\u0101 stabilit\u0101te:<\/strong> noteikt sarau\u0161an\u0101s robe\u017ev\u0113rt\u012bbas, kas saist\u012btas ar polim\u0113ru p\u0101rej\u0101m.<\/li>\n\n\n\n<li><strong>Galapat\u0113ri\u0146a veiktsp\u0113ja:<\/strong> Iepakojuma integrit\u0101tes nodro\u0161in\u0101\u0161ana, jo \u012bpa\u0161i termosarau\u0161an\u0101s lietojumiem.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Piem\u0113ram, p\u0101rm\u0113r\u012bga sarau\u0161an\u0101s var izrais\u012bt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Izkrop\u013cots iepakojuma izskats<\/li>\n\n\n\n<li>Medic\u012bnisko maisi\u0146u plombas boj\u0101jumi<\/li>\n\n\n\n<li>Meh\u0101nisk\u0101 spriedze lamin\u0113t\u0101s konstrukcij\u0101s<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Veicot test\u0113\u0161anu vair\u0101k\u0101s temperat\u016br\u0101s, in\u017eenieri var noteikt. <strong>sarau\u0161an\u0101s profila l\u012bkne<\/strong>, kas \u013cauj prec\u012bzi izv\u0113l\u0113ties materi\u0101lus un optimiz\u0113t procesu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u0101p\u0113c izv\u0113l\u0113ties t\u0101dus uzlabotus test\u0113\u0161anas risin\u0101jumus k\u0101 FST-01<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Praktisk\u0101 laboratorijas vid\u0113 ar manu\u0101l\u0101m metod\u0113m bie\u017ei vien tiek konstat\u0113tas neatbilst\u012bbas. . <strong>FST-01 <a href=\"https:\/\/www.materialstests.com\/lv\/products\/fst-01-film-free-shrink-tester.html\/\" target=\"_blank\" data-type=\"products\" data-id=\"3069\" rel=\"noreferrer noopener\">Bez pl\u0113ves sarau\u0161an\u0101s testeris<\/a><\/strong> risina \u0161\u012bs probl\u0113mas, izmantojot:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Atk\u0101rtojami sild\u012b\u0161anas apst\u0101k\u013ci<\/strong> pa partij\u0101m<\/li>\n\n\n\n<li><strong>Samazin\u0101ts cilv\u0113ka k\u013c\u016bdu skaits<\/strong> laik\u0101 un apstr\u0101d\u0113<\/li>\n\n\n\n<li><strong>Uzlabota dro\u0161\u012bba<\/strong> ar sl\u0113gt\u0101m e\u013c\u013cas vannu sist\u0113m\u0101m<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Iepakojuma, farm\u0101cijas un elektronikas ra\u017eot\u0101jiem \u0161\u0101di instrumenti nodro\u0161ina atbilst\u012bbu ASTM D2732 standartam, vienlaikus uzlabojot ra\u017e\u012bgumu un uzticam\u012bbu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D2732 test\u0113\u0161anas lietojumi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nozares pa\u013caujas uz ASTM D2732, lai:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Elast\u012bg\u0101s iepakojuma pl\u0113ves (PET, PE, PVC)<\/li>\n\n\n\n<li>Medic\u012bnisk\u0101s un farmaceitisk\u0101s steril\u0101s barjeras<\/li>\n\n\n\n<li>Siltuma sarau\u0161anas uzmavas un caurules<\/li>\n\n\n\n<li>R\u016bpniecisk\u0101s stiepes un iesai\u0146o\u0161anas pl\u0113ves<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Katr\u0101 no \u0161iem gad\u012bjumiem sarau\u0161an\u0101s tie\u0161i ietekm\u0113 produkta funkcionalit\u0101ti un vizu\u0101lo kvalit\u0101ti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bie\u017e\u0101k uzdotie jaut\u0101jumi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Ko m\u0113ra ar ASTM D2732?<\/strong><br>Ar to m\u0113ra plastmasas pl\u0113vju line\u0101ro termisko sarau\u0161anos bez ierobe\u017eojumiem, kad t\u0101s tiek pak\u013cautas kontrol\u0113tiem karstuma apst\u0101k\u013ciem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. K\u0101d\u0113\u013c ir svar\u012bgi veikt sarau\u0161an\u0101s testus iepakojuma pl\u0113v\u0113m?<\/strong><br>Tas nodro\u0161ina, ka pl\u0113ves saglab\u0101 izm\u0113ru stabilit\u0101ti un bl\u012bv\u0113juma integrit\u0101ti karstuma iedarb\u012bbas laik\u0101 apstr\u0101d\u0113 vai galapat\u0113ri\u0146\u0101.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. K\u0101ds ir standarta parauga izm\u0113rs ASTM D2732 standart\u0101?<\/strong><br>Standarta izm\u0113rs ir 100 mm \u00d7 100 mm, lai m\u0113r\u012bjumi b\u016btu prec\u012bzi un konsekventi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Cik ilgi paraugs iegremd\u0113jams?<\/strong><br>Parasti 10 sekundes, bet biez\u0101kiem materi\u0101liem var b\u016bt nepiecie\u0161ama valid\u0101cija, lai pan\u0101ktu pietiekamu termisko l\u012bdzsvaru.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. K\u0101ds apr\u012bkojums ir ieteicams <a href=\"https:\/\/store.astm.org\/d2732-14r25.html\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM D2732<\/a> test\u0113\u0161ana?<\/strong><br>Speci\u0101ls sarau\u0161an\u0101s pl\u0113vju testeris, piem\u0113ram, FST-01, nodro\u0161ina prec\u012bzu temperat\u016bras kontroli un atk\u0101rtojamus rezult\u0101tus.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D2732 defin\u0113 standartiz\u0113tu metodi plastmasas pl\u0113vju termisk\u0101s sarau\u0161an\u0101s nov\u0113rt\u0113\u0161anai, iegremd\u0113jot paraugus sakars\u0113t\u0101 vid\u0113 un m\u0113rot izm\u0113ru izmai\u0146as.<\/p>","protected":false},"featured_media":3270,"parent":0,"template":"","meta":{"_acf_changed":false},"standard":[1012],"class_list":["post-3268","application","type-application","status-publish","has-post-thumbnail","hentry","standard-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application"}],"about":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/types\/application"}],"version-history":[{"count":2,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3268\/revisions"}],"predecessor-version":[{"id":3271,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3268\/revisions\/3271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/media\/3270"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/media?parent=3268"}],"wp:term":[{"taxonomy":"standard","embeddable":true,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/standard?post=3268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}