{"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\/sq\/standard\/astm-d2732\/","title":{"rendered":"ASTM D2732"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u00c7far\u00eb \u00ebsht\u00eb ASTM D2732 dhe pse ka r\u00ebnd\u00ebsi<\/h2>\n\n\n\n<p><strong>ASTM D2732<\/strong> p\u00ebrcakton nj\u00eb qasje t\u00eb standardizuar p\u00ebr t\u00eb vler\u00ebsuar <strong>kontraktim linear termik i pakufizuar<\/strong> i filmave dhe flet\u00ebve plastike (me trash\u00ebsi \u2264 0,76 mm). N\u00eb terma praktik\u00eb, kjo metod\u00eb sasinon sa shum\u00eb nj\u00eb film tkurr kur ekspozohet ndaj temperaturave t\u00eb larta. <strong>pa kufizime t\u00eb jashtme<\/strong>.<\/p>\n\n\n\n<p>Gjat\u00eb prodhimit t\u00eb filmit\u2014si\u00e7 \u00ebsht\u00eb ekstrudimi ose orientimi\u2014<strong>Strese t\u00eb brendshme futen n\u00eb struktur\u00ebn e materialit.<\/strong>. Kur aplikohet nxeht\u00ebsi, k\u00ebto tensione relaksohen, duke \u00e7uar n\u00eb tkurrje dimensionale. Kuptimi i k\u00ebtij sjelljeje \u00ebsht\u00eb thelb\u00ebsor p\u00ebr:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Integriteti i paketimit<\/strong> (p.sh., mb\u00ebshtjell\u00ebse plastike, etiketa)<\/li>\n\n\n\n<li><strong>P\u00ebrmir\u00ebsoni performanc\u00ebn e vulosjes n\u00eb paketimin mjek\u00ebsor<\/strong><\/li>\n\n\n\n<li><strong>Stabiliteti dimensional n\u00eb filmat industrial\u00eb<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>ASTM D2732 ofron nj\u00eb korniz\u00eb t\u00eb p\u00ebrs\u00ebritshme<\/strong> p\u00ebr t\u00eb matur tkurrjen n\u00eb temperatura t\u00eb ndryshme, duke i mund\u00ebsuar inxhinier\u00ebve dhe ekipeve t\u00eb kontrollit t\u00eb cil\u00ebsis\u00eb t\u00eb korrelojn\u00eb performanc\u00ebn me kushtet e p\u00ebrpunimit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Metoda e testimit t\u00eb tkurrjes nga nxeht\u00ebsia<\/h2>\n\n\n\n<p>T\u00eb <strong>Metoda e testimit t\u00eb tkurrjes nga nxeht\u00ebsia<\/strong> E p\u00ebrshkruar n\u00eb ASTM D2732, fokusohet n\u00eb ekspozimin e kontrolluar termik n\u00eb nj\u00eb mjedis me banj\u00eb l\u00ebngu.<\/p>\n\n\n\n<p>Parimet kryesore teknike p\u00ebrfshijn\u00eb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gjendje e pakufizuar:<\/strong> Specimeni duhet t\u00eb tkurret lirsh\u00ebm pa nd\u00ebrhyrje mekanike.<\/li>\n\n\n\n<li><strong>Ekuilibri termik:<\/strong> Specimeni duhet t\u00eb arrij\u00eb nj\u00eb temperatur\u00eb t\u00eb q\u00ebndrueshme p\u00ebr t\u00eb arritur tkurrjen maksimale.<\/li>\n\n\n\n<li><strong>Matje dydrejtimshe:<\/strong> Tkurqja vler\u00ebsohet n\u00eb t\u00eb dyja <strong>drejtimi i makin\u00ebs (MD)<\/strong> dhe <strong>drejtimi transversal (TD)<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>V\u00ebshtrim kritik:<\/strong> Tendosja nuk \u00ebsht\u00eb e pandryshueshme\u2014ajo ndryshon ndjesh\u00ebm me temperatur\u00ebn. Prandaj, testimi n\u00eb pika t\u00eb ndryshme temperaturash ofron nj\u00eb <strong>profili i tkurrjes<\/strong>, jo vet\u00ebm nj\u00eb vler\u00eb e vetme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procedura e testimit t\u00eb tkurrjes<\/h2>\n\n\n\n<p>Nj\u00eb i standardizuar <strong>procedura e testimit t\u00eb tkurrjes<\/strong> siguron sakt\u00ebsin\u00eb dhe riprodhueshm\u00ebrin\u00eb:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">P\u00ebrgatitja e mostr\u00ebs<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prisni <strong>Mostrat 100 mm \u00d7 100 mm<\/strong><\/li>\n\n\n\n<li>P\u00ebrdor t\u00eb pakt\u00ebn <strong>dy mostra p\u00ebr \u00e7do temperatur\u00eb testi<\/strong><\/li>\n\n\n\n<li>Sh\u00ebno drejtimin e makineris\u00eb n\u00ebse \u00ebsht\u00eb e nevojshme<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ekzekutimi i testit<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Vendosni mostr\u00ebn n\u00eb nj\u00eb <strong>mbajt\u00ebs falas i lenteve<\/strong> p\u00ebr t\u00eb shmangur kufizimin<\/li>\n\n\n\n<li>Regjistroni temperatur\u00ebn e banj\u00ebs para zhytjes<\/li>\n\n\n\n<li>Zhytni mostr\u00ebn p\u00ebr <strong>~10 sekonda<\/strong> (ose derisa t\u00eb arrihet ekuilibri)<\/li>\n\n\n\n<li>Transferoni menj\u00ebher\u00eb n\u00eb nj\u00eb medium ftoh\u00ebs.<\/li>\n\n\n\n<li>Mat dimensionet p\u00ebrfundimtare pas stabilizimit.<\/li>\n<\/ol>\n\n\n\n<p><strong>Paraprakje t\u00eb r\u00ebnd\u00ebsishme:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shmangni ngrohjen paraprake t\u00eb mostr\u00ebs para zhytjes.<\/li>\n\n\n\n<li>Parandaloni shtrirjen e mostr\u00ebs gjat\u00eb trajtimit<\/li>\n\n\n\n<li>Siguroni shp\u00ebrndarje t\u00eb nj\u00ebtrajtshme t\u00eb temperatur\u00ebs n\u00eb vask\u00eb.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Llogaritja e tkurrjes<\/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\">Tkurja(\\%) = \\frac{L_0 \u2013 L_f}{L_0} \\times 100<\/annotation><\/semantics><\/math>Togjimi(%)=L0\u200bL0\u200b\u2212Lf\u200b\u200b\u00d7100<\/p>\n\n\n\n<p>Ku:<\/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: Gjat\u00ebsia fillestare (zakonisht 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: Gjat\u00ebsia p\u00ebrfundimtare pas tkurrjes<\/li>\n<\/ul>\n\n\n\n<p>Kjo formul\u00eb ofron <strong>p\u00ebrqindja e tkurrjes lineare<\/strong>, nj\u00eb paramet\u00ebr ky\u00e7 p\u00ebr krahasimin e materialeve dhe kontrollin e cil\u00ebsis\u00eb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Testuesi pa film p\u00ebr tkurrje: P\u00ebrmir\u00ebsimi i sakt\u00ebsis\u00eb s\u00eb testimit<\/h2>\n\n\n\n<p>A <strong><a href=\"https:\/\/www.packqc.com\/sq\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" data-type=\"products\" data-id=\"9536\" rel=\"noreferrer noopener\">testues tkurrjeje pa film<\/a><\/strong> \u00cbsht\u00eb thelb\u00ebsore p\u00ebr zbatimin e ASTM D2732 me precizion t\u00eb lart\u00eb. Krahasuar me konfigurimet manuale, instrumentet e dedikuara ofrojn\u00eb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kontroll i q\u00ebndruesh\u00ebm i temperatur\u00ebs (\u00b10.3\u00b0C)<\/strong><\/li>\n\n\n\n<li><strong>Ngrohje e nj\u00ebtrajtshme p\u00ebrmes mediumit t\u00eb l\u00ebngsh\u00ebm<\/strong><\/li>\n\n\n\n<li><strong>Koh\u00ebmatje e zhytjes s\u00eb kontrolluar<\/strong><\/li>\n\n\n\n<li><strong>Kushtet e q\u00ebndrueshme t\u00eb pakufizuara<\/strong><\/li>\n<\/ul>\n\n\n\n<p>P\u00ebr shembull, <strong>Instrumentet e qelizave <a href=\"https:\/\/www.packqc.com\/sq\/products\/fst-01-film-shrinkage-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">FST-01 Testuesi pa film p\u00ebr tkurrje<\/a><\/strong> i mund\u00ebson laborator\u00ebve t\u00eb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Simuloni kushtet reale t\u00eb tkurrjes<\/li>\n\n\n\n<li>Gjeneroni t\u00eb dh\u00ebna t\u00eb p\u00ebrs\u00ebritshme t\u00eb tkurrjes<\/li>\n\n\n\n<li>Redukoni variacionin e shkaktuar nga operator\u00ebt<\/li>\n<\/ul>\n\n\n\n<p>I saj <strong>Sistem ngrohjeje i kontrolluar nga PID dhe pajisje t\u00eb standardizuara<\/strong> Siguroni p\u00ebrputhshm\u00ebrin\u00eb me ASTM D2732 duke p\u00ebrmir\u00ebsuar efikasitetin operativ.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Faktor\u00ebt kryesor\u00eb q\u00eb ndikojn\u00eb n\u00eb rezultatet e ASTM D2732<\/h2>\n\n\n\n<p>P\u00ebr t\u00eb interpretuar rezultatet sakt\u00eb, merrni parasysh variablat e m\u00ebposhtme:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. P\u00ebrb\u00ebrja e materialit<\/h3>\n\n\n\n<p>Polimera t\u00eb ndryshme (PET, PVC, PE) shfaqin sjellje t\u00eb ndryshme tkurrjeje p\u00ebr shkak t\u00eb orientimit molekular dhe kristalinizmit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Historia e p\u00ebrpunimit<\/h3>\n\n\n\n<p>Raportet e shtrirjes s\u00eb filmit, shpejt\u00ebsit\u00eb e ftohjes dhe anelimi ndikojn\u00eb drejtp\u00ebrdrejt <strong>nivelet e stresit t\u00eb mbetur<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Zgjedhja e temperatur\u00ebs<\/h3>\n\n\n\n<p>Testimi n\u00eb temperatura t\u00eb ndryshme tregon:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fillimi i tkurrjes<\/li>\n\n\n\n<li>Pika maksimale e tkurrjes<\/li>\n\n\n\n<li>Sjellja e tranzicionit termik<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Trash\u00ebsia dhe struktura<\/h3>\n\n\n\n<p>Filmat m\u00eb t\u00eb trasha ose me shtresa t\u00eb shumta mund t\u00eb k\u00ebrkojn\u00eb koh\u00eb m\u00eb t\u00eb gjat\u00eb zhytjeje p\u00ebr t\u00eb arritur ekuilibrin.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pyetjet e shpeshta<\/h2>\n\n\n\n<p>1. Cilat materiale jan\u00eb t\u00eb p\u00ebrshtatshme p\u00ebr testimin sipas ASTM D2732?<br>Filma dhe flet\u00eb plastike me trash\u00ebsi \u22640,76 mm, duke p\u00ebrfshir\u00eb PET, PE, PVC dhe laminate me shtresa t\u00eb shumta.<\/p>\n\n\n\n<p>2. Pse \u00ebsht\u00eb e r\u00ebnd\u00ebsishme tkurrja e pakontrolluar?<br>Ai pasqyron sjelljen materiale t\u00eb brendshme pa forca t\u00eb jashtme, duke ofruar <strong>karakteristikat e v\u00ebrteta t\u00eb tkurrjes<\/strong>.<\/p>\n\n\n\n<p>3. Sa gjat\u00eb duhet t\u00eb zhyten mostrat?<br>Zakonisht 10 sekonda, por materialet m\u00eb t\u00eb trasha ose t\u00eb reja mund t\u00eb k\u00ebrkojn\u00eb verifikim p\u00ebr t'u siguruar tkurrjen e plot\u00eb.<\/p>\n\n\n\n<p>4. Cili \u00ebsht\u00eb ndryshimi midis tkurrjes MD dhe TD?<br>MD (drejtimi i makin\u00ebs) p\u00ebrkon me drejtimin e prodhimit t\u00eb film\u00ebs, nd\u00ebrsa TD \u00ebsht\u00eb i p\u00ebrpendikular\u2014t\u00eb dyja ndikojn\u00eb n\u00eb performanc\u00eb n\u00eb m\u00ebnyra t\u00eb ndryshme.<\/p>\n\n\n\n<p>5. Mund <a href=\"https:\/\/store.astm.org\/d2732-14r25.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D2732<\/a> t\u00eb p\u00ebrdoret p\u00ebr tkurrje me baz\u00eb tret\u00ebs?<br>Jo, nuk merr parasysh tkurrjen e shkaktuar nga humbja e tret\u00ebsit.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D2732 vler\u00ebson tkurrjen lineare termike t\u00eb pakufizuar t\u00eb filmave plastik\u00eb duke matur ndryshimet dimensionale pas ngrohjes s\u00eb kontrolluar.<\/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\/sq\/wp-json\/wp\/v2\/standard\/10305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/sq\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/sq\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sq\/wp-json\/wp\/v2\/media\/10306"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/sq\/wp-json\/wp\/v2\/media?parent=10305"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/sq\/wp-json\/wp\/v2\/standard-category?post=10305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}