{"id":5,"date":"2020-05-27T23:30:29","date_gmt":"2020-05-27T23:30:29","guid":{"rendered":"https:\/\/hotmelts.eu\/?page_id=5"},"modified":"2021-08-23T10:09:37","modified_gmt":"2021-08-23T10:09:37","slug":"hot-melt-adhesives","status":"publish","type":"page","link":"https:\/\/hotmelts.eu\/nl\/","title":{"rendered":"Smeltlijmen"},"content":{"rendered":"<p>Hotmelt lijmen zijn oplosmiddelvrije of watervrije producten die bij kamertemperatuur min of meer vast zijn, in hete toestand als stroperige vloeistof aanwezig zijn en op het lijmoppervlak worden aangebracht. Bij afkoeling stollen ze omkeerbaar en vormen ze een stevige band. Deze groep lijmen zijn thermoplastische polymeren op basis van verschillende chemische grondstoffen<\/p>\n\n\n\n<div class=\"wp-block-nk-awb nk-awb\"><div class=\"nk-awb-wrap\" data-awb-type=\"yt_vm_video\" data-awb-video=\"https:\/\/www.youtube.com\/watch?v=SKlMGHs3XGY&amp;t=7s\" data-awb-video-mobile=\"false\"><div class=\"nk-awb-inner is-layout-constrained wp-block-awb-is-layout-constrained\"><\/div><\/div>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"341\" src=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg.png\" alt=\"\" class=\"wp-image-101\" srcset=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg.png 342w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-300x300.png 300w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-150x150.png 150w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-12x12.png 12w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n\n\n\n<p>Wat is een smeltlijm? <\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Thermoplastische en uithardende smeltlijmen<\/h2>\n\n\n\n<p>Hotmelt-lijmen kunnen worden onderverdeeld in fysisch en chemisch uithardende lijmen. De fysisch uithardende lijmen zijn thermoplasten, de chemisch uithardende vormen thermoharders, dwz driedimensionale netwerken. Een ander type classificatie betreft het stollingsmechanisme. Hier worden smeltlijmen onderverdeeld in amorfe polymeren, semi-kristallijne polymeren en hoogmoleculaire polymeren, de eerste twee met een glasovergangstemperatuur boven kamertemperatuur en de laatste met een glasovergangstemperatuur onder kamertemperatuur. <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Intercol Hotmelt-lijmen\" width=\"680\" height=\"383\" src=\"https:\/\/www.youtube.com\/embed\/Ypzhe41eUCU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>Intercol hotmelt lijmen<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">EVA en polyolefine<\/h2>\n\n\n\n<p>De belangrijkste polymeren die worden gebruikt voor het fysisch harden van smeltlijmen zijn polyamideharsen, verzadigde polyesters, ethyleenvinylacetaat (EVA) copolymeren, polyolefinen, blokcopolymeren (styreen-butadieen-styreen of styreen-isopreen-styreen) en polyamiden. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PSA<\/h2>\n\n\n\n<p>Drukgevoelige lijmen zijn fysisch uithardende systemen die worden gekenmerkt door hun permanente kleefkracht. Door middel van een uit te oefenen aandrukkracht bereiken de lijmen hun hechting op de te verlijmen materialen - bij toenemende aandrukkracht ontstaat een betere hechting. Omdat het verbinden van drukgevoelige lijmen zowel voor als na het uitharden kan plaatsvinden, afhankelijk van de sterkte van de permanente kleefkracht, worden ze vaak gebruikt voor voorcoating. Dit betekent dat het aanvraagproces tijd en ruimte onafhankelijk van de verlijming kan worden uitgevoerd.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"697\" height=\"606\" src=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering.png\" alt=\"\" class=\"wp-image-6\" srcset=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering.png 697w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering-300x261.png 300w\" sizes=\"auto, (max-width: 697px) 100vw, 697px\" \/><figcaption>Engineering van een psa smeltlijm<\/figcaption><\/figure>\n\n\n\n<p><br>Hotmelt drukgevoelige lijmen van Intercol worden gekenmerkt door een hoge hechting op verschillende materialen en door een hoge sterkte en flexibiliteit. Bij de verwerking scoren deze moderne lijmen punten vanwege hun bovengemiddelde aanvankelijke kleefkracht en uitstekende viscositeitsstabiliteit.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Hot-melt adhesives are solvent-free or water-free products that are more or less solid at room temperature, [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-full-width.php","meta":{"footnotes":""},"class_list":["post-5","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hot melt adhesives - Hotmelt adhesives<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hotmelts.eu\/nl\/\" \/>\n<meta property=\"og:locale\" content=\"nl_BE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hot melt adhesives - 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