{"id":2832,"date":"2026-04-10T09:29:35","date_gmt":"2026-04-10T09:29:35","guid":{"rendered":"https:\/\/www.seedchemever.com\/?p=2832"},"modified":"2026-04-10T09:29:39","modified_gmt":"2026-04-10T09:29:39","slug":"die-herausforderung-von-wasserbasierten-beschichtungen-auf-pp-pe-substraten","status":"publish","type":"post","link":"https:\/\/www.seedchemever.com\/de\/the-challenge-of-waterborne-coatings-on-pp-pe-substrates\/","title":{"rendered":"Die Herausforderung von w\u00e4ssrigen Beschichtungen auf PP- und PE-Substraten"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Today, let&#8217;s talk about a headache-inducing problem for many engineers: the persistent difficulty of achieving lasting adhesion when applying waterborne coatings to substrates like Polypropylene (PP) and Polyethylene (PE).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Da die Umweltvorschriften immer strenger werden, werden Beschichtungen auf Wasserbasis immer h\u00e4ufiger eingesetzt. Ihre Anwendung auf PP und PE stellt jedoch eine gro\u00dfe Herausforderung dar. Wie k\u00f6nnen wir diese langfristige Haftung systematisch erreichen?<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"498\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2833 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"498\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1.jpg\" alt=\"\" class=\"wp-image-2833\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1-300x187.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1-768x478.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-1-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Der inh\u00e4rente Konflikt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">First, let&#8217;s examine the surface characteristics of PP and PE and the troubles they cause:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Niedrige Oberfl\u00e4chenenergie<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Die Oberfl\u00e4chenenergie von PP und PE ist sehr niedrig (nur 20-30 dyn), w\u00e4hrend die Oberfl\u00e4chenspannung von Wasser viel h\u00f6her ist. Dies f\u00fchrt dazu, dass das Wasser abperlt wie Wasser auf einem Lotusblatt und eine gute Benetzung verhindert. Ohne grundlegende Benetzung ist eine Haftung unm\u00f6glich.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Unpolare Molek\u00fcle<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These materials lack functional groups for the coating to &#8220;bite&#8221; onto. Their molecular chains are non-polar, and the surface structure is a mix of crystalline and amorphous regions, making it highly uneven.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Formtrennmittel<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Verarbeitungshilfsmittel wie Formtrennmittel wandern oft an die Oberfl\u00e4che und bilden einen isolierenden Film. Dadurch gleitet die Beschichtung so leicht ab, als ob sie auf Glas w\u00e4re.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Im Grunde genommen handelt es sich um einen Konflikt zwischen einem Substrat mit geringer Oberfl\u00e4chenenergie und keiner Reaktivit\u00e4t und einem wasserbasierten System mit hoher Oberfl\u00e4chenspannung, das empfindlich auf Umweltbedingungen reagiert. Es handelt sich nicht nur um ein Materialproblem, sondern um ein systemisches Problem, das die Oberfl\u00e4chenbehandlung, die Formulierungsgestaltung und die Bauumgebung betrifft.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"519\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2834 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"519\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2.jpg\" alt=\"\" class=\"wp-image-2834\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2-300x195.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2-768x498.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-2-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Systemische L\u00f6sungen<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Wie also l\u00f6sen wir dieses Problem?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vorbehandlung der Oberfl\u00e4che (Reinigung und Aktivierung)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To improve adhesion, we must increase the substrate&#8217;s surface energy.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Reinigung<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Entfernen Sie Formtrennmittel, \u00d6l und Staub. Dies geschieht in der Regel durch Abwischen mit Isopropylalkohol (IPA) oder alkalischen L\u00f6sungen. Bei h\u00f6heren Anforderungen ist eine Plasma- oder Ultraschallreinigung erforderlich.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Freischaltung<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Nach der Reinigung m\u00fcssen wir die Reaktivit\u00e4t erh\u00f6hen. Hier kommen Korona-, Plasma- oder Flammenbehandlung ins Spiel. Bei diesen Verfahren wird die Oberfl\u00e4che mit hochenergetischen Teilchen beschossen, die Kohlenstoff-Wasserstoff-Bindungen aufbrechen und polare Gruppen (wie Hydroxyl- oder Carboxylgruppen) bilden.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Grundierung<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Eine bessere Methode ist das Auftragen einer Schicht aus Silan-Haftvermittler oder chloriertem Polypropylen (spezielle Grundierung). Dadurch entsteht eine reaktive Oberfl\u00e4che, die es der Beschichtung erm\u00f6glicht, fest zu haften.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Verbesserung der Benetzung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To reduce the coating&#8217;s surface tension.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Zusatzstoffe<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcgen Sie wirksame Netzmittel (z. B. organische Silikon-, Fluorkohlenstoff- oder Diol-Tenside) hinzu, damit sich das Wasser besser verteilen kann.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Formulierung<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Passen Sie das Harz-zu-Monomer-Verh\u00e4ltnis an und w\u00e4hlen Sie Monomere mit geringer Schrumpfung, um die Nivellierung zu verbessern und innere Spannungen zu verringern.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Umweltkontrolle<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bautemperatur und Luftfeuchtigkeit haben einen gro\u00dfen Einfluss auf das Ergebnis.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Luftfeuchtigkeit<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Kontrolle der Luftfeuchtigkeit zwischen 50%-70%.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Temperatur<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Halten Sie die Temperatur zwischen 20-30\u00b0C. Ein Vorheizen des Untergrunds auf 40-60 \u00b0C kann dazu beitragen, dass das Wasser gleichm\u00e4\u00dfiger verdunstet, was die Haftung und Gleichm\u00e4\u00dfigkeit deutlich verbessert.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"507\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2835 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"507\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3.jpg\" alt=\"\" class=\"wp-image-2835\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3-300x190.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3-768x487.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/04\/waterborne-coatings-solutions-3-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Die Rolle der Haftvermittler<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Stellen Sie sich einen Haftvermittler wie eine Br\u00fccke vor. Ein Ende reagiert mit Hydroxylgruppen auf der Substratoberfl\u00e4che, das andere Ende mit Gruppen im Harz. Er mischt sich gut mit dem Harz und zieht die anorganische Oberfl\u00e4che und die organische Beschichtung fest zusammen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Auswahl<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Die Wahl des falschen Kopplungsmittels beeintr\u00e4chtigt die Leistung erheblich.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcr Polyolefinsysteme ist Vinylsilan zu verwenden.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcr Epoxidsysteme verwenden Sie Epoxysilan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Dosierung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In der Regel 0,5%-2% der Formulierung. Achten Sie auf die pH-Stabilit\u00e4t und die Dispersion in Systemen auf Wasserbasis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steuerung der Prozessparameter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bei PP und PE (Beschichtung) m\u00fcssen die Vorbehandlungsparameter streng kontrolliert werden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reinigung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Verwenden Sie unterschiedliche Methoden f\u00fcr unterschiedliche Verschmutzungen (L\u00f6semittel f\u00fcr Schimmeltrennung, Lauge f\u00fcr \u00d6l, Ultraschall f\u00fcr komplexe Strukturen). Achten Sie darauf, dass das Substrat nicht aufquillt oder besch\u00e4digt wird.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Aufrauen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Verwenden Sie Schleifpapier oder chemisches \u00c4tzen, um die Gleichm\u00e4\u00dfigkeit zu gew\u00e4hrleisten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Freischaltung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Die Plasmabehandlung hat eine kurze (Lager-)Lebensdauer. Die Beschichtung muss innerhalb von 24 Stunden aufgetragen werden.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Anwendung &amp; Aush\u00e4rtung<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Spr\u00fchen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Einstellen von D\u00fcsen\u00f6ffnung, Luftdruck und Pistolengeschwindigkeit. Schichtdicke in mehreren Schichten auf Gleichm\u00e4\u00dfigkeit kontrollieren. Sicherstellen, dass die Druckluft \u00f6l- und wasserfrei ist. Abl\u00fcft- und Nivellierzeit steuern, um Blasen oder Absacken zu vermeiden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Aush\u00e4rtung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Strictly follow the manufacturer&#8217;s temperature and time recommendations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Achten Sie auf Verformungen bei hitzeempfindlichen Kunststoffen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bei der UV-H\u00e4rtung ist die Penetrationsf\u00e4higkeit zu beachten.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bei 2K-Systemen ist das H\u00e4rterverh\u00e4ltnis entscheidend: zu viel macht den Film spr\u00f6de, zu wenig f\u00fchrt zu unvollst\u00e4ndiger Vernetzung.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Das k\u00f6nnte Sie auch interessieren: SEED <a href=\"https:\/\/www.seedchemever.com\/de\/wasserbasierte-beschichtungen-olbasierte-beschichtungen\/\" type=\"link\" id=\"https:\/\/www.seedchemever.com\/water-based-coatings-oil-based-coatings\/\">Anwendung von Wasserlacken<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qualit\u00e4tssicherung<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Messen Sie bei jeder Charge die Schichtdicke und die Haftfestigkeit. Wenn es Probleme gibt, m\u00fcssen diese sofort auf den vorherigen Prozess zur\u00fcckgef\u00fchrt werden. Nur wenn wir alle Glieder koordinieren, k\u00f6nnen wir diesen Engpass \u00fcberwinden und die Qualit\u00e4t sicherstellen.<\/p>","protected":false},"excerpt":{"rendered":"<p>Today, let&#8217;s talk about a headache-inducing problem for many engineers: the persistent difficulty of achieving lasting adhesion when applying waterborne [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2833,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":"","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":"default","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"_themeisle_gutenberg_block_has_review":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1],"tags":[],"class_list":["post-2832","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Challenge of Waterborne Coatings on PP &amp; 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