{"id":567,"date":"2024-12-25T05:12:04","date_gmt":"2024-12-25T05:12:04","guid":{"rendered":"https:\/\/www.wrapfilmtest.com\/?page_id=567"},"modified":"2025-01-13T08:40:48","modified_gmt":"2025-01-13T08:40:48","slug":"haze-and-transmittance-test","status":"publish","type":"page","link":"https:\/\/www.wrapfilmtest.com\/fi\/haze-and-transmittance-test","title":{"rendered":"H\u00e4m\u00e4ryys ja l\u00e4p\u00e4isytesti"},"content":{"rendered":"<div class=\"slider-wrapper relative\" id=\"slider-1259281407\" >\n    <div class=\"slider slider-nav-circle slider-nav-large slider-nav-light slider-style-normal\"\n        data-flickity-options='{            \"cellAlign\": \"center\",            \"imagesLoaded\": true,            \"lazyLoad\": 1,            \"freeScroll\": false,            \"wrapAround\": true,            \"autoPlay\": 6000,            \"pauseAutoPlayOnHover\" : true,            \"prevNextButtons\": true,            \"contain\" : true,            \"adaptiveHeight\" : true,            \"dragThreshold\" : 10,            \"percentPosition\": true,            \"pageDots\": true,            \"rightToLeft\": false,            \"draggable\": true,            \"selectedAttraction\": 0.1,            \"parallax\" : 0,            \"friction\": 0.6        }'\n        >\n        \n\n\n  <div class=\"banner has-hover\" id=\"banner-238006385\">\n          <div class=\"banner-inner fill\">\n        <div class=\"banner-bg fill\" >\n            <div class=\"bg fill bg-fill\"><\/div>\n                        <div class=\"overlay\"><\/div>            \n                    <\/div>\n\t\t\n        <div class=\"banner-layers container\">\n            <div class=\"fill banner-link\"><\/div>            \n\n   <div id=\"text-box-732113635\" class=\"text-box banner-layer x50 md-x50 lg-x50 y50 md-y50 lg-y50 res-text\">\n                     <div data-animate=\"fadeInLeft\">           <div class=\"text-box-content text dark text-shadow-1\">\n              \n              <div class=\"text-inner text-center\">\n                  \n\n<h2>H\u00e4m\u00e4ryys ja l\u00e4p\u00e4isytesti<\/h2>\n<div class=\"is-divider divider clearfix\" ><\/div>\n\n<a href=\"https:\/\/www.wrapfilmtest.com\/fi\/contact\/\" target=\"_blank\" class=\"button success box-shadow-3\" rel=\"noopener\"  >\n    <span>Pyyd\u00e4 tarjous<\/span>\n  <\/a>\n\n\n\n              <\/div>\n           <\/div>\n       <\/div>                     \n<style>\n#text-box-732113635 {\n  width: 66%;\n}\n#text-box-732113635 .text-box-content {\n  font-size: 100%;\n}\n<\/style>\n    <\/div>\n \n\n        <\/div>\n      <\/div>\n\n            \n<style>\n#banner-238006385 {\n  padding-top: 30%;\n}\n#banner-238006385 .bg.bg-loaded {\n  background-image: url(https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Wrap-Film-Test-Price-768x224.webp);\n}\n#banner-238006385 .overlay {\n  background-color: rgba(0, 0, 0, 0.25);\n}\n#banner-238006385 .bg {\n  background-position: 71% 54%;\n}\n<\/style>\n  <\/div>\n\n\n\n     <\/div>\n\n     <div class=\"loading-spin dark large centered\"><\/div>\n\n\t<\/div>\n\n\n<div class=\"row align-middle\"  id=\"row-1211034796\">\n\n\n\t<div id=\"col-1430280337\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h2 class=\"lead uppercase\" style=\"text-align: left;\">K\u00e4\u00e4rikalvojen sameus- ja l\u00e4p\u00e4isytesti: kattava opas<\/h2>\n<p>K\u00e4\u00e4rekalvoja, mukaan lukien venytyskalvot ja pakkauskalvot, k\u00e4ytet\u00e4\u00e4n monissa sovelluksissa pakkaamisesta suojaukseen ja kuljetukseen. N\u00e4iden kalvojen on usein s\u00e4ilytett\u00e4v\u00e4 tietty l\u00e4pin\u00e4kyvyyden taso, jotta sis\u00e4lt\u00f6 on n\u00e4kyviss\u00e4 ja samalla ne tarjoavat tehokkaan suojan ulkoisia elementtej\u00e4 vastaan.<\/p>\n<h5>\u00a0<\/h5>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-904418313\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_362755806\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner image-cover dark\" style=\"padding-top:75%;\">\n\t\t\t<img decoding=\"async\" width=\"631\" height=\"400\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter-631x400.webp\" class=\"attachment-medium size-medium\" alt=\"Haze Meter ja Valonl\u00e4p\u00e4isymittari\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter-631x400.webp 631w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter-1262x800.webp 1262w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter-768x487.webp 768w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter-510x323.webp 510w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-and-Luminous-Transmittance-meter.webp 1330w\" sizes=\"(max-width: 631px) 100vw, 631px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_362755806 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\t<section class=\"section has-parallax\" id=\"section_423826091\">\n\t\t<div class=\"bg section-bg fill bg-fill\" data-parallax-container=\".section\" data-parallax-background data-parallax=\"-4\">\n\n\t\t\t\n\t\t\t<div class=\"section-bg-overlay absolute fill\"><\/div>\n\t\t\t\n\t<div class=\"is-border\"\n\t\tstyle=\"border-color:rgb(235, 235, 235);border-width:1px 0px 0px 0px;\">\n\t<\/div>\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-2143625191\">\n\n\n\t<div id=\"col-721199304\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2926587481\" class=\"text\">\n\t\t\n\n<h2 class=\"uppercase\">Sumun ja valonl\u00e4p\u00e4isevyyden rooli pakkauksissa<\/h2>\n\t\t\n<style>\n#text-2926587481 {\n  color: rgb(253, 253, 253);\n}\n#text-2926587481 > * {\n  color: rgb(253, 253, 253);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-848860614\" class=\"col medium-8 small-12 large-8\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-3058598792\" class=\"text\">\n\t\t\n\n<p>Sumu ja valonl\u00e4p\u00e4isevyys vaikuttavat suoraan k\u00e4\u00e4rekalvon kirkkauden ja ulkon\u00e4k\u00f6\u00f6n, mik\u00e4 on olennaista kuluttajien k\u00e4sitykselle, erityisesti elintarvikepakkauksissa ja v\u00e4hitt\u00e4iskaupan ymp\u00e4rist\u00f6iss\u00e4. Riitt\u00e4m\u00e4tt\u00f6m\u00e4t sameustasot voivat heikent\u00e4\u00e4 visuaalista vetovoimaa, kun taas v\u00e4\u00e4r\u00e4 l\u00e4p\u00e4isevyys voi vaarantaa k\u00e4\u00e4reen tehokkuuden tuotteiden suojaamisessa. Testaus varmistaa, ett\u00e4 kalvot t\u00e4ytt\u00e4v\u00e4t vaaditut optisen kirkkauden ja l\u00e4pin\u00e4kyvyyden vaatimukset.<\/p>\n\t\t\n<style>\n#text-3058598792 {\n  color: rgb(255, 255, 255);\n}\n#text-3058598792 > * {\n  color: rgb(255, 255, 255);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_423826091 {\n  padding-top: 60px;\n  padding-bottom: 60px;\n  min-height: 300px;\n  background-color: rgb(245, 245, 245);\n}\n#section_423826091 .section-bg-overlay {\n  background-color: rgba(0,0,0,.5);\n}\n#section_423826091 .section-bg.bg-loaded {\n  background-image: url(https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-Meter-for-film-scaled.webp);\n}\n#section_423826091 .section-bg {\n  background-position: 46% 58%;\n}\n<\/style>\n\t<\/section>\n\t\n<div class=\"text-center\"><div class=\"is-divider divider clearfix\" ><\/div><\/div>\n\n\t<div id=\"text-10113718\" class=\"text\">\n\t\t\n\n<h2>L\u00e4p\u00e4isy ja sameus ovat kaksi eritt\u00e4in t\u00e4rke\u00e4\u00e4 l\u00e4pin\u00e4kyvien materiaalien optista ominaisuutta.<\/h2>\n\t\t\n<style>\n#text-10113718 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n<p style=\"text-align: center;\">H\u00e4m\u00e4ryys liittyy vahvasti hajaantuneeseen ja l\u00e4p\u00e4isev\u00e4\u00e4n valovirtaan; L\u00e4p\u00e4isykyky on v\u00e4liaineen l\u00e4pi kulkevan valovirran prosenttiosuus tulevasta valovirrasta.<\/p>\n\t<section class=\"section\" id=\"section_767712559\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t<div class=\"is-border\"\n\t\tstyle=\"border-color:rgb(235, 235, 235);border-width:1px 0px 0px 0px;\">\n\t<\/div>\n\n\t\t<\/div>\n\n\t\t\t<div class=\"ux-shape-divider ux-shape-divider--top ux-shape-divider--style-arrow\">\n\t\t<svg viewbox=\"0 0 1000 100\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" preserveaspectratio=\"none\">\n\t<path class=\"ux-shape-fill\" d=\"M1000 100H0L0 96H483L500 79L517 96H1000V100Z\"\/>\n<\/svg>\n\t<\/div>\n\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row align-middle\"  id=\"row-1801178044\">\n\n\n\t<div id=\"col-637018861\" class=\"col medium-3 small-12 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>Sameus kuvaa sameuden ja ep\u00e4s\u00e4\u00e4nn\u00f6llisyyden tilaa l\u00e4pin\u00e4kyviss\u00e4 tai l\u00e4pikuultavissa materiaaleissa, ja l\u00e4p\u00e4isykyky osoittaa materiaalin kyvyn l\u00e4p\u00e4ist\u00e4 valoa.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-372568992\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>H\u00e4m\u00e4r\u00e4 on sironneen valovirran suhde l\u00e4p\u00e4isev\u00e4\u00e4n valovirtaan, joka poikkeaa tulevan valon suunnasta, kun rinnakkainen valo kulkee materiaalin\u00e4ytteen l\u00e4pi, ja ilmaistaan prosentteina. Yleens\u00e4 h\u00e4m\u00e4r\u00e4n laskemiseen k\u00e4ytet\u00e4\u00e4n vain sironnutta valovirtaa, joka poikkeaa tulevan valon suunnasta enemm\u00e4n kuin 2,5 astetta.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-100657581\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p><strong>L\u00e4p\u00e4isevyys<\/strong> on valon kyky kulkea materiaalin kohteen v\u00e4liaineen l\u00e4pi, ja se on prosenttiosuus valovirrasta, joka kulkee materiaalin l\u00e4pi tulevaan valovirtaan.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_767712559 {\n  padding-top: 60px;\n  padding-bottom: 60px;\n  min-height: 300px;\n}\n#section_767712559 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_767712559 .ux-shape-divider--top .ux-shape-fill {\n  fill: rgb(122, 156, 89);\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section dark\" id=\"section_1408236416\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-21394998\">\n\n\n\t<div id=\"col-199002384\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1878384984\" class=\"text\">\n\t\t\n\n<h3>Miten sameus ja l\u00e4p\u00e4isykyky lasketaan?<\/h3>\n\t\t\n<style>\n#text-1878384984 {\n  font-size: 1.75rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row row-large\"  id=\"row-40806489\">\n\n\n\t<div id=\"col-1800972449\" class=\"col medium-7 small-12 large-7\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n<p style=\"text-align: left;\">Testin aikana, kun tulevaa valoa ei ole, vastaanotettu valovirta on 0. Kun n\u00e4ytett\u00e4 ei ole, kaikki tuleva valo kulkee l\u00e4pi ja vastaanotettu valovirta on 100, jota merkit\u00e4\u00e4n T1. T\u00e4ss\u00e4 vaiheessa valoloukku absorboi yhdensuuntaista valoa ja vastaanotettu valovirta on instrumentin hajavalovirta T3. Sitten n\u00e4yte asetetaan ja laite vastaanottaa l\u00e4hetetyn valovirran, joka on T2. Jos valoloukku absorboi rinnakkaisvaloa, vastaanotettu valovirta on n\u00e4ytteen ja instrumentin sironneen valovirran T4 summa. Mitattujen T1, T2, T3 ja T4 arvojen perusteella voidaan laskea l\u00e4p\u00e4isy- ja sameusarvot.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1906051230\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n<p style=\"text-align: left;\">L\u00e4p\u00e4isykyky Tt lasketaan seuraavan kaavan mukaan:<\/p>\n<p style=\"text-align: left;\"><strong>Tt(%)=T2\/T1*100<\/strong><\/p>\n<p style=\"text-align: left;\">Sameusarvo H lasketaan seuraavan kaavan mukaan:<\/p>\n<p style=\"text-align: left;\"><strong>H(%)=(T4\/T2-T3\/T1)*100<\/strong><\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-2076762482\">\n\n\n\t<div id=\"col-1341000974\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2572466438\" class=\"text\">\n\t\t\n\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words text-start &#091;.text-message+&amp;&#093;:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"70ce54c9-bbec-45b4-a163-7abfc4da4420\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-&#091;3px&#093;\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>Yleisesti ottaen l\u00e4p\u00e4isevyydell\u00e4 ja sameudella on k\u00e4\u00e4nteinen suhde. Materiaaleissa, joilla on korkea l\u00e4p\u00e4isykyky, on yleens\u00e4 alhainen sameus ja p\u00e4invastoin. N\u00e4iden kahden v\u00e4linen suhde ei kuitenkaan aina ole t\u00e4llainen, ja joskus tulokset voivat olla p\u00e4invastaisia.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\t\t\n<style>\n#text-2572466438 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1408236416 {\n  padding-top: 45px;\n  padding-bottom: 45px;\n  background-color: #273647;\n}\n@media (min-width:550px) {\n  #section_1408236416 {\n    padding-top: 65px;\n    padding-bottom: 65px;\n  }\n}\n@media (min-width:850px) {\n  #section_1408236416 {\n    padding-top: 30px;\n    padding-bottom: 30px;\n  }\n}\n<\/style>\n\t<\/section>\n\t\n<div class=\"text-center\"><div class=\"is-divider divider clearfix\" ><\/div><\/div>\n\n\t<div id=\"text-584068801\" class=\"text\">\n\t\t\n\n<h2>Ohjaavat standardit sameuden ja l\u00e4p\u00e4isevyyden testaamiseen<\/h2>\n\t\t\n<style>\n#text-584068801 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\t<section class=\"section\" id=\"section_1830221087\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t<div class=\"is-border\"\n\t\tstyle=\"border-color:rgb(235, 235, 235);border-width:1px 0px 0px 0px;\">\n\t<\/div>\n\n\t\t<\/div>\n\n\t\t\t<div class=\"ux-shape-divider ux-shape-divider--top ux-shape-divider--style-arrow-2\">\n\t\t<svg viewbox=\"0 0 1000 100\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" preserveaspectratio=\"none\">\n\t<path class=\"ux-shape-fill\" d=\"M1000 100H0L0 96H480.929C482.255 96 483.527 95.4732 484.464 94.5355L497.879 81.1213C499.05 79.9497 500.95 79.9497 502.121 81.1213L515.536 94.5355C516.473 95.4732 517.745 96 519.071 96H1000V100Z\"\/>\n<\/svg>\n\t<\/div>\n\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-422904863\">\n\n\n\t<div id=\"col-1654668697\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>Useat kansainv\u00e4liset standardit ohjaavat sameuden ja l\u00e4p\u00e4isevyyden mittaamista varmistaen tarkkuuden ja johdonmukaisuuden testausmenettelyiss\u00e4.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-657940581\">\n\n\n\t<div id=\"col-1032902291\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\n\t\t<div class=\"icon-box featured-box icon-box-top text-left\"  >\n\t\t\t\t<div class=\"icon-box-text last-reset\">\n\t\t\t\t\t\t\t\t\t\n\n<h3>ASTM D1003 \u2013 standarditestimenetelm\u00e4 l\u00e4pin\u00e4kyvien muovien sameudelle ja valonl\u00e4p\u00e4isylle<\/h3>\n<div id=\"pdp-description\">\n<div><a href=\"https:\/\/www.astm.org\/d1003-21.html\" target=\"_blank\" rel=\"noopener\">ASTM D1003<\/a> on yleisimmin k\u00e4ytetty menetelm\u00e4 l\u00e4pin\u00e4kyvien muovien, mukaan lukien k\u00e4\u00e4rekalvojen, sameuden ja valonl\u00e4p\u00e4isevyyden mittaamiseen. T\u00e4ss\u00e4 testiss\u00e4 k\u00e4ytet\u00e4\u00e4n sameusmittaria valonsirontaasteen ja n\u00e4ytteen l\u00e4pi l\u00e4p\u00e4isev\u00e4n valon prosenttiosuuden mittaamiseen.<\/div>\n<\/div>\n<a class=\"button primary\"  >\n    <span>Lis\u00e4tietoja ASTM D1003:sta<\/span>\n  <\/a>\n\n\n<h3>ISO 13468 \u2013 Muovit \u2013 L\u00e4pin\u00e4kyvien materiaalien kokonaisvalonl\u00e4p\u00e4isevyyden m\u00e4\u00e4ritys<\/h3>\n<div id=\"pdp-description\">\n<div><a href=\"https:\/\/www.iso.org\/standard\/77312.html\" target=\"_blank\" rel=\"noopener\">ISO 13468<\/a> tarjoaa yksityiskohtaisen menetelm\u00e4n muovikalvojen sameuden testaamiseen keskittyen tarkkoihin mittausolosuhteisiin ja laitteisiin, joilla arvioidaan kuinka paljon valoa on sironnut kalvon l\u00e4pi.<\/div>\n<\/div>\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t\n<a class=\"button primary\"  >\n    <span>Lis\u00e4tietoja ISO 13468:sta<\/span>\n  <\/a>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-109034947\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>ISO 14782 \u2013 Muovit \u2013 L\u00e4pin\u00e4kyvien materiaalien sameuden m\u00e4\u00e4ritys<\/h3>\n<p><a href=\"https:\/\/www.iso.org\/standard\/81840.html\" target=\"_blank\" rel=\"noopener\">ISO 14782<\/a> hahmottelee menetelm\u00e4n muovikalvojen sameuden ja valonl\u00e4p\u00e4isevyyden mittaamiseksi. Siin\u00e4 m\u00e4\u00e4ritell\u00e4\u00e4n laitteet, menettelyt ja ehdot, jotka ovat tarpeen tarkkojen ja toistettavien tulosten varmistamiseksi.<\/p>\n<a class=\"button primary\"  >\n    <span>Lis\u00e4tietoja ISO 14782:sta<\/span>\n  <\/a>\n\n\n<h3>ASTM D1044 \u2013<span style=\"font-size: 20.16px;\">Vakiotestimenetelm\u00e4 l\u00e4pin\u00e4kyvien muovien kest\u00e4vyydelle Taber Abraserin pinnan hankausta vastaan<\/span><\/h3>\n<div id=\"pdp-description\">\n<div class=\"astm-type-body--lead border-top mt-3 pt-2 adv-description\"><span style=\"color: #555555; font-size: 14.4px;\">Vaikka se ei liity suoraan h\u00e4m\u00e4r\u00e4\u00e4n, <\/span><a style=\"font-size: 14.4px;\" href=\"https:\/\/www.astm.org\/d1044-19.html\" target=\"_blank\" rel=\"noopener\">ASTM D1044<\/a><span style=\"color: #555555; font-size: 14.4px;\"> on keskeinen standardi kalvojen hankauskest\u00e4vyyden testauksessa, mik\u00e4 voi vaikuttaa kalvon l\u00e4p\u00e4isyyn ja yleiseen kirkkauteen k\u00e4yt\u00f6n aikana.<\/span><\/div>\n<\/div>\n<a class=\"button primary\"  >\n    <span>Lis\u00e4tietoja ASTM D1044:st\u00e4<\/span>\n  <\/a>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1830221087 {\n  padding-top: 60px;\n  padding-bottom: 60px;\n  min-height: 300px;\n  background-color: rgb(245, 245, 245);\n}\n#section_1830221087 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_1830221087 .ux-shape-divider--top .ux-shape-fill {\n  fill: #7a9c59;\n}\n<\/style>\n\t<\/section>\n\t\n\n  <div class=\"banner has-hover\" id=\"banner-1224155387\">\n          <div class=\"banner-inner fill\">\n        <div class=\"banner-bg fill\" >\n            <div class=\"bg fill bg-fill\"><\/div>\n                        <div class=\"overlay\"><\/div>            \n                    <\/div>\n\t\t\n        <div class=\"banner-layers container\">\n            <div class=\"fill banner-link\"><\/div>            \n\n   <div id=\"text-box-1590536588\" class=\"text-box banner-layer x5 md-x5 lg-x5 y50 md-y50 lg-y50 res-text\">\n                                <div class=\"text-box-content text dark\">\n              \n              <div class=\"text-inner text-left\">\n                  \n\n<h2 class=\"uppercase\"><strong>Kuinka sameuden ja valon l\u00e4p\u00e4isytesti suoritetaan<\/strong><\/h2>\n\n              <\/div>\n           <\/div>\n                            \n<style>\n#text-box-1590536588 {\n  width: 60%;\n}\n#text-box-1590536588 .text-box-content {\n  font-size: 100%;\n}\n@media (min-width:550px) {\n  #text-box-1590536588 {\n    width: 50%;\n  }\n}\n<\/style>\n    <\/div>\n \n\t<div class=\"img has-hover x100 md-x100 lg-x100 y50 md-y50 lg-y50\" id=\"image_76919375\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"768\" height=\"1156\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester-768x1156.webp\" class=\"attachment-medium_large size-medium_large\" alt=\"H\u00e4m\u00e4r\u00e4n ja valonl\u00e4p\u00e4isevyyden testeri\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester-768x1156.webp 768w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester-266x400.webp 266w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester-532x800.webp 532w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester-510x768.webp 510w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Tester.webp 1000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_76919375 {\n  width: 44%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n        <\/div>\n      <\/div>\n\n            \n<style>\n#banner-1224155387 {\n  padding-top: 500px;\n}\n#banner-1224155387 .overlay {\n  background-color: rgba(0, 0, 0, 0.31);\n}\n<\/style>\n  <\/div>\n\n\n\t<section class=\"section\" id=\"section_1279248008\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\t<div class=\"ux-shape-divider ux-shape-divider--top ux-shape-divider--style-waves-opacity-2 ux-shape-divider--flip\">\n\t\t<svg viewbox=\"0 0 1000 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" preserveaspectratio=\"none\">\n  <path class=\"ux-shape-fill\" opacity=\"0.15\" d=\"M0 299L-2 19.9998C153 -16.0002 308 155 413 184C515.64 212.35 562 152 645 153C725 154 787 206 874 233C939.54 253.34 975 248 1000 244.61V299H0Z\"\/>\n  <path class=\"ux-shape-fill\" opacity=\"0.3\" d=\"M0 300L-2 34C155 -9.00003 300 178 403 212C504.11 245.38 562 165 645 166C725 167 790.09 220.07 874 253C939.21 278.59 978.07 269.72 1000 263.61V300H0Z\"\/>\n  <path class=\"ux-shape-fill\" d=\"M0 300L-1 69.7099C216 56.9999 299.47 198.86 403 226C506 253 577 196 660 197C740 198 790.09 234.07 874 267C935.23 291 982 282.61 1000 277.61V300H0Z\"\/>\n<\/svg>\n\t<\/div>\n\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row row-large align-center\"  id=\"row-2140596149\">\n\n\n\t<div id=\"col-467325329\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner text-right\"  >\n\t\t\t\n\t\t\t\n\n\n\t\t<div class=\"icon-box featured-box icon-box-top text-left\"  >\n\t\t\t\t<div class=\"icon-box-text last-reset\">\n\t\t\t\t\t\t\t\t\t\n\n<h3>Testin yleiskatsaus<\/h3>\n<p>The <strong>H\u00e4m\u00e4ryys ja l\u00e4p\u00e4isytesti<\/strong> suoritetaan tyypillisesti k\u00e4ytt\u00e4m\u00e4ll\u00e4 standardoituja testimenetelmi\u00e4, kuten <strong>ASTM D1003<\/strong>, <strong>ISO 14782<\/strong>, <strong>ISO 13468<\/strong>, ja <strong>ASTM D1044<\/strong>. N\u00e4m\u00e4 standardit m\u00e4\u00e4rittelev\u00e4t menetelm\u00e4t l\u00e4pin\u00e4kyvien kalvojen optisten ominaisuuksien mittaamiseksi, mukaan lukien sameus ja valonl\u00e4p\u00e4isy, jotka ovat kriittisi\u00e4 m\u00e4\u00e4ritett\u00e4ess\u00e4, miten kalvo toimii k\u00e4yt\u00e4nn\u00f6n sovelluksissa, kuten pakkauksissa, n\u00e4yt\u00f6iss\u00e4 ja muissa teollisissa k\u00e4ytt\u00f6tarkoituksissa.<\/p>\n<div class=\"text-right\"><div class=\"is-divider divider clearfix\" style=\"max-width:100px;\"><\/div><\/div>\n\n\t<div id=\"text-1643782800\" class=\"text\">\n\t\t\n\n<h3>Vaiheittainen testimenettely<\/h3>\n\t\t\n<style>\n#text-1643782800 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t\n<div class=\"row row-divided\"  id=\"row-216442310\">\n\n\n\t<div id=\"col-724883299\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\n\t\t<div class=\"icon-box featured-box icon-box-top text-left\"  >\n\t\t\t\t<div class=\"icon-box-text last-reset\">\n\t\t\t\t\t\t\t\t\t\n\n\t<div id=\"text-3221987467\" class=\"text\">\n\t\t\n\n<p><span style=\"font-size: 140%;\">1. N\u00e4ytteen valmistelu<\/span><\/p>\n<p><strong>N\u00e4ytteen valinta<\/strong>: Valitse edustava elokuvan\u00e4yte testausta varten. Varmista, ett\u00e4 kalvo on puhdas ja ettei siin\u00e4 ole likaa, naarmuja tai muita ep\u00e4t\u00e4ydellisyyksi\u00e4, jotka voivat vaikuttaa mittaukseen.<\/p>\n<p><strong>N\u00e4ytteen koko<\/strong>: Kalvon\u00e4ytteen on tyypillisesti oltava riitt\u00e4v\u00e4n suuri peitt\u00e4m\u00e4\u00e4n t\u00e4ysin sameusmittarin testiaukon, tyypillisesti py\u00f6re\u00e4n alueen, jonka halkaisija on noin 50 mm tai enemm\u00e4n.<\/p>\n\t\t\n<style>\n#text-3221987467 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t<\/div>\n\t\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-864496703\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2432146130\" class=\"text\">\n\t\t\n\n<p><span style=\"font-size: 140%;\">2. Instrumenttien asetukset<\/span><\/p>\n<p><strong>H\u00e4m\u00e4r\u00e4mittarin kalibrointi<\/strong>: Sameusmittari on kalibroitava valmistajan ohjeiden mukaisesti. Kalibrointi varmistaa, ett\u00e4 laite antaa tarkat lukemat. Kalibrointi tehd\u00e4\u00e4n yleens\u00e4 sertifioidulla standardimateriaalilla, jolla on tunnetut sameus- ja l\u00e4p\u00e4isyarvot.<\/p>\n<p>Aseta n\u00e4ytekalvo instrumentin valonl\u00e4hteen ja ilmaisimen v\u00e4liin. Kalvo tulee sijoittaa niin, ett\u00e4 valo p\u00e4\u00e4see sen l\u00e4pi.<\/p>\n\t\t\n<style>\n#text-2432146130 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"text-center\"><div class=\"is-divider divider clearfix\" ><\/div><\/div>\n\n<div class=\"row row-divided row-box-shadow-2-hover\"  id=\"row-889031614\">\n\n\n\t<div id=\"col-1346791711\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-3482545464\" class=\"text\">\n\t\t\n\n<p><span style=\"font-size: 140%;\">3. Parametrien asetus<\/span><\/p>\n<p><span class=\"fontstyle0\">Valitse testistandardi, testikohde Haze, l\u00e4p\u00e4isevyys tai molemmat ja valonl\u00e4hde, kuten Light A, Light C tai Light D65.<\/span><\/p>\n\t\t\n<style>\n#text-3482545464 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1684490991\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-653749382\" class=\"text\">\n\t\t\n\n<p><span style=\"font-size: 140%;\">4. Aloita testi<\/span><\/p>\n<p><span class=\"fontstyle0\">Mittaa perusn\u00e4yte ja mittaa sitten testatut n\u00e4ytteet. Testitulos n\u00e4kyy n\u00e4yt\u00f6ll\u00e4 ja k\u00e4ytt\u00e4j\u00e4 voi verrata tuloksia.\u00a0<\/span><\/p>\n\t\t\n<style>\n#text-653749382 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-467325329 > .col-inner {\n  padding: 55px 0px 0px 0px;\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1279248008 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n#section_1279248008 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_1279248008 .ux-shape-divider--top .ux-shape-fill {\n  fill: #7a9c59;\n}\n<\/style>\n\t<\/section>\n\t\n\n  <div class=\"banner has-hover\" id=\"banner-1739999001\">\n          <div class=\"banner-inner fill\">\n        <div class=\"banner-bg fill\" >\n            <div class=\"bg fill bg-fill\"><\/div>\n                        <div class=\"overlay\"><\/div>            \n                    <\/div>\n\t\t\n        <div class=\"banner-layers container\">\n            <div class=\"fill banner-link\"><\/div>            \n\n   <div id=\"text-box-602695618\" class=\"text-box banner-layer x95 md-x95 lg-x95 y50 md-y50 lg-y50 res-text\">\n                                <div class=\"text-box-content text dark\">\n              \n              <div class=\"text-inner text-right\">\n                  \n\n\t<div id=\"text-1097076281\" class=\"text\">\n\t\t\n\n<h2 class=\"h-large uppercase\" style=\"text-align: right;\">Tarvitsetko Sumu- ja valonl\u00e4p\u00e4isytestiratkaisuja?<\/h2>\n<p>Varmista kalvojesi optinen laatu tarkasti ja luotettavasti. Meid\u00e4n <strong>Sumu- ja valonl\u00e4p\u00e4isytestiratkaisut<\/strong> on suunniteltu kansainv\u00e4listen standardien mukaisiksi. Olitpa testaamassa <strong>k\u00e4\u00e4ri kalvot<\/strong>, <strong>venyv\u00e4t kalvot<\/strong>, tai <strong>muut muovimateriaalit<\/strong>, edistyneet testauslaitteistomme tarjoavat tarkat tulokset molemmille <strong>usva<\/strong> ja <strong>l\u00e4p\u00e4isevyytt\u00e4<\/strong> mittaukset, mik\u00e4 auttaa sinua parantamaan tuotetta per<\/p>\n\t\t\n<style>\n#text-1097076281 {\n  text-align: right;\n}\n<\/style>\n\t<\/div>\n\t\n<a class=\"button white is-outline\"  >\n    <span>Tarkista sameuden ja valonl\u00e4p\u00e4isevyyden testeri<\/span>\n  <\/a>\n\n\n\n              <\/div>\n           <\/div>\n                            \n<style>\n#text-box-602695618 {\n  width: 60%;\n}\n#text-box-602695618 .text-box-content {\n  font-size: 100%;\n}\n@media (min-width:550px) {\n  #text-box-602695618 {\n    width: 51%;\n  }\n}\n<\/style>\n    <\/div>\n \n\t<div class=\"img has-hover x0 md-x0 lg-x0 y100 md-y100 lg-y100\" id=\"image_45169617\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"240\" height=\"400\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-240x400.webp\" class=\"attachment-medium size-medium\" alt=\"Sumun ja valonl\u00e4p\u00e4isevyyden mittaus\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-240x400.webp 240w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-480x800.webp 480w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-768x1281.webp 768w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-921x1536.webp 921w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-1228x2048.webp 1228w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-510x851.webp 510w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Haze-and-Light-Transmittance-Measurement-scaled.webp 1535w\" sizes=\"(max-width: 240px) 100vw, 240px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_45169617 {\n  width: 39%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n        <\/div>\n      <\/div>\n\n            \n<style>\n#banner-1739999001 {\n  padding-top: 500px;\n}\n#banner-1739999001 .overlay {\n  background-color: rgba(0, 0, 0, 0.2);\n}\n<\/style>\n  <\/div>\n\n\n\t<section class=\"section\" id=\"section_1111301318\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-1430713712\">\n\n\n\t<div id=\"col-1049660212\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n<h2>Usein kysytty\u00e4 sameus- ja valonl\u00e4p\u00e4isytestist\u00e4<\/h2>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row align-equal row-solid\"  id=\"row-1526586528\">\n\n\n\t<div id=\"col-377436829\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Mit\u00e4 eroa on sameuden ja valonl\u00e4p\u00e4isykyvyn v\u00e4lill\u00e4 muovikalvoissa?<\/h3>\n<p>Sumulla tarkoitetaan valon sirontaa sen kulkiessa materiaalin l\u00e4pi, mik\u00e4 aiheuttaa kirkkauden menetyksen ja johtaa sameaseen ulkon\u00e4k\u00f6\u00f6n. Valonl\u00e4p\u00e4isevyys puolestaan mittaa n\u00e4kyv\u00e4n valon prosenttiosuutta, joka kulkee materiaalin l\u00e4pi ilman sirontaa. Vaikka sameus mittaa kirkkauden tai l\u00e4pin\u00e4kyvyyden h\u00e4vi\u00e4misen, valonl\u00e4p\u00e4isevyys arvioi, kuinka paljon valoa voi todella kulkea materiaalin l\u00e4pi, mik\u00e4 on t\u00e4rke\u00e4\u00e4 sovelluksissa, kuten pakkauksissa ja visuaalisissa n\u00e4yt\u00f6iss\u00e4.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-551779573\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Miten sameus- ja valonl\u00e4p\u00e4isytesti vaikuttaa pakkausmateriaaleihin?<\/h3>\n<p>Pakkausmateriaaleille, erityisesti elintarvike- ja l\u00e4\u00e4keteollisuudessa, pakkausmateriaalin kirkkaus ja valonl\u00e4p\u00e4isevyys ovat kriittisi\u00e4. Suuret sameusarvot voivat heikent\u00e4\u00e4 tuotteen hyllyn vetovoimaa saamalla sen n\u00e4ytt\u00e4m\u00e4\u00e4n samealta tai l\u00e4pin\u00e4kym\u00e4tt\u00f6m\u00e4lt\u00e4, kun taas optimaalinen valonl\u00e4p\u00e4isevyys varmistaa, ett\u00e4 etiketit, tuotetiedot tai pakkauksen sis\u00e4lt\u00f6 pysyv\u00e4t n\u00e4kyviss\u00e4. Testi auttaa valmistajia varmistamaan, ett\u00e4 heid\u00e4n kalvonsa t\u00e4ytt\u00e4v\u00e4t esteettiset ja toiminnalliset selkeyden ja l\u00e4pin\u00e4kyvyyden vaatimukset.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1925795186\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Mik\u00e4 on sameusmittarin rooli n\u00e4iden testien suorittamisessa?<\/h3>\n<p>A <strong>sameusmittari<\/strong> k\u00e4ytet\u00e4\u00e4n mittaamaan kalvon l\u00e4pi kulkevan sironneen valon m\u00e4\u00e4r\u00e4\u00e4. Se toimii tyypillisesti ohjaamalla valons\u00e4teen n\u00e4ytemateriaalin l\u00e4pi ja k\u00e4ytt\u00e4m\u00e4ll\u00e4 ilmaisimia mittaamaan sek\u00e4 l\u00e4p\u00e4isev\u00e4\u00e4 ett\u00e4 sirottua valoa. N\u00e4iden lukemien v\u00e4linen ero auttaa laskemaan sameus- ja l\u00e4p\u00e4isyarvot. T\u00e4m\u00e4 laite on v\u00e4ltt\u00e4m\u00e4t\u00f6n kansainv\u00e4listen testausstandardien edellytt\u00e4mien tarkkojen, objektiivisten ja toistettavien tulosten saamiseksi.\u00a0<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1192180215\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Miten valonl\u00e4p\u00e4isyprosentti lasketaan testauksen aikana?<\/h3>\n<p>Valonl\u00e4p\u00e4isykyky lasketaan materiaalin l\u00e4pi l\u00e4hetetyn valovirran suhteeksi tulevaan valovirtaan. T\u00e4m\u00e4 ilmaistaan yleens\u00e4 prosentteina:<img decoding=\"async\" class=\"alignnone size-medium wp-image-579\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Luminous-Transmittance-Formula-800x75.webp\" alt=\"Valonl\u00e4p\u00e4isykaava\" width=\"800\" height=\"75\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Luminous-Transmittance-Formula-800x75.webp 800w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Luminous-Transmittance-Formula-768x72.webp 768w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Luminous-Transmittance-Formula-510x48.webp 510w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2024\/12\/Luminous-Transmittance-Formula.webp 917w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>T\u00e4m\u00e4 arvo ilmaisee, kuinka paljon valoa (n\u00e4kyv\u00e4ss\u00e4 spektriss\u00e4) kulkee materiaalin l\u00e4pi, mik\u00e4 on ratkaisevan t\u00e4rke\u00e4\u00e4 eri sovelluksissa k\u00e4ytett\u00e4vien kalvojen l\u00e4pin\u00e4kyvyyden ja optisen kirkkauden arvioinnissa.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\n<style>\n#row-1526586528 > .col > .col-inner {\n  padding: 30px 30px 30px 30px;\n}\n<\/style>\n<\/div>\n<div class=\"row align-equal row-solid\"  id=\"row-1983599236\">\n\n\n\t<div id=\"col-2068701095\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Voidaanko h\u00e4m\u00e4ryys- ja valonl\u00e4p\u00e4isytestausta soveltaa muihin materiaaleihin kuin muovikalvoihin?<\/h3>\n<p>Kyll\u00e4, sameus- ja valonl\u00e4p\u00e4isymittauksia voidaan soveltaa useisiin materiaaleihin muovikalvojen lis\u00e4ksi, mukaan lukien lasit, pinnoitteet ja laminaatit. Erityiset testausmenetelm\u00e4t ja -laitteet voivat kuitenkin vaihdella materiaalin ominaisuuksien mukaan. Esimerkiksi vaikka ASTM D1003:a k\u00e4ytet\u00e4\u00e4n yleisesti muovikalvoissa, muita materiaaleja varten voidaan tarvita lis\u00e4standardeja tai muutoksia valonsirontak\u00e4ytt\u00e4ytymisen tai pintaominaisuuksien erojen huomioon ottamiseksi.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-407041384\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Mit\u00e4 standardeja k\u00e4ytet\u00e4\u00e4n sameuden ja l\u00e4p\u00e4isevyyden testaamiseen?<\/h3>\n<p>Ensisijaisia standardeja h\u00e4m\u00e4r\u00e4- ja valonl\u00e4p\u00e4isymittauksille ovat:<\/p>\n<li>ASTM D1003: L\u00e4pin\u00e4kyvien muovien sameuden ja valonl\u00e4p\u00e4isykyvyn standarditestimenetelm\u00e4.<\/li>\n<li>ISO 14782: T\u00e4m\u00e4 standardi m\u00e4\u00e4rittelee menetelm\u00e4n muovikalvojen ja -levyjen valonl\u00e4p\u00e4isykyvyn m\u00e4\u00e4ritt\u00e4miseksi.<\/li>\n<li>ASTM D1044: Antaa ohjeita hankaavien muovien sameuden ja kirkkauden m\u00e4\u00e4ritt\u00e4miseen. N\u00e4m\u00e4 standardit varmistavat johdonmukaisen, toistettavan testauksen ja tarkat tiedot materiaalien suorituskyvyn arvioinnissa.<\/li>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\n<style>\n#row-1983599236 > .col > .col-inner {\n  padding: 30px 30px 30px 30px;\n}\n<\/style>\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1111301318 {\n  padding-top: 60px;\n  padding-bottom: 60px;\n  background-color: rgb(255,255,255);\n}\n<\/style>\n\t<\/section>\n\t\n<div class=\"container section-title-container\" ><h3 class=\"section-title section-title-center\"><b><\/b><span class=\"section-title-main\" >Lis\u00e4\u00e4 k\u00e4\u00e4rekalvotestej\u00e4<\/span><b><\/b><\/h3><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":20,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"class_list":["post-567","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Haze and Transmittance Test - Wrap Film Test<\/title>\n<meta name=\"description\" content=\"Learn about the importance of Haze and Transmittance tests for wrap films, including the role of haze meters, luminous transmittance, and key industry standards like ASTM D1003 and ISO 14782. Discover how these tests ensure clarity and transparency for optimal packaging and product protection.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wrapfilmtest.com\/fi\/haze-and-transmittance-test\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Complete Guide to Haze and Transmittance Test for Wrap Films\" \/>\n<meta property=\"og:description\" content=\"Explore the significance of Haze and Transmittance testing in wrap films. Understand how these tests ensure clarity, transparency, and quality in packaging materials like stretch and packaging films. 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