{"id":1667,"date":"2025-08-14T06:39:43","date_gmt":"2025-08-14T06:39:43","guid":{"rendered":"https:\/\/www.zkprintpack.com\/?p=1667"},"modified":"2025-08-14T06:39:46","modified_gmt":"2025-08-14T06:39:46","slug":"aluminum-transfer-in-flexible-packaging","status":"publish","type":"post","link":"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/","title":{"rendered":"Explication du ph\u00e9nom\u00e8ne de transfert d'aluminium dans les mat\u00e9riaux d'emballage flexibles"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#What_is_Aluminum_Transfer_in_Flexible_Packaging\" >Qu'est-ce que le transfert d'aluminium dans l'emballage souple ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Causes_and_Mechanisms_of_Aluminum_Transfer\" >Causes et m\u00e9canismes du transfert d'aluminium<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Printing_layer\" >Couche d'impression<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Adhesive_layer\" >Couche adh\u00e9sive<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Aluminum_layer\" >Couche d'aluminium<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Effects_of_Aluminum_Transfer\" >Effets du transfert d'aluminium<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Wrinkling_of_finished_products\" >Froissement des produits finis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Decreased_water_and_oxygen_barrier_properties\" >Diminution des propri\u00e9t\u00e9s de barri\u00e8re \u00e0 l'eau et \u00e0 l'oxyg\u00e8ne<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Reduced_adhesive_performance\" >R\u00e9duction des performances de l'adh\u00e9sif<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.zkprintpack.com\/fr\/aluminum-transfer-in-flexible-packaging\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>De nombreux clients ont rencontr\u00e9 ce probl\u00e8me : les sacs d'emballage qu'ils re\u00e7oivent semblent parfaits au d\u00e9but, mais apr\u00e8s stockage, ils commencent \u00e0 montrer des signes de d\u00e9coloration ou des changements inattendus. Ce ph\u00e9nom\u00e8ne peut \u00eatre d\u00e9routant et avoir un impact sur la qualit\u00e9 du produit, en particulier dans les applications d'emballage B2B. Aujourd'hui,<strong><a href=\"https:\/\/www.zkprintpack.com\/fr\/\"> Zhongjia Packaging<\/a><\/strong> explorera les pi\u00e8ges les plus courants de l'emballage souple et expliquera les \"<strong>transfert d'aluminium<\/strong>\"dans les films m\u00e9tallis\u00e9s.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"872\" height=\"545\" src=\"https:\/\/www.zkprintpack.com\/wp-content\/uploads\/2025\/08\/Aluminum-Transfer-Phenomenon-in-Flexible-Packaging-Materials.webp\" alt=\"Ph\u00e9nom\u00e8ne de transfert d&#039;aluminium dans les mat\u00e9riaux d&#039;emballage flexibles\" class=\"wp-image-1669\" srcset=\"https:\/\/www.zkprintpack.com\/wp-content\/uploads\/2025\/08\/Aluminum-Transfer-Phenomenon-in-Flexible-Packaging-Materials.webp 872w, https:\/\/www.zkprintpack.com\/wp-content\/uploads\/2025\/08\/Aluminum-Transfer-Phenomenon-in-Flexible-Packaging-Materials-768x480.webp 768w, https:\/\/www.zkprintpack.com\/wp-content\/uploads\/2025\/08\/Aluminum-Transfer-Phenomenon-in-Flexible-Packaging-Materials-18x12.webp 18w, https:\/\/www.zkprintpack.com\/wp-content\/uploads\/2025\/08\/Aluminum-Transfer-Phenomenon-in-Flexible-Packaging-Materials-600x375.webp 600w\" sizes=\"(max-width: 872px) 100vw, 872px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Aluminum_Transfer_in_Flexible_Packaging\"><\/span>Qu'est-ce que le transfert d'aluminium dans l'emballage souple ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Tous les sacs ne connaissent pas ce ph\u00e9nom\u00e8ne, mais il est le plus souvent observ\u00e9 dans les mat\u00e9riaux stratifi\u00e9s PET\/VMPET. En bref, le probl\u00e8me peut se r\u00e9sumer comme suit : \"le mat\u00e9riau est trop rigide\" : \"le mat\u00e9riau est trop rigide\".<\/p>\n\n\n\n<p>Les films VMPET sont fabriqu\u00e9s en m\u00e9tallisant un substrat PET avec une fine couche d'aluminium par d\u00e9p\u00f4t sous vide. Le PET est naturellement un mat\u00e9riau tr\u00e8s dur, ce qui conf\u00e8re au film lamin\u00e9 une excellente verticalit\u00e9 et une grande r\u00e9sistance. Ces mat\u00e9riaux sont couramment utilis\u00e9s dans les sachets \u00e0 fond plat et les emballages solides, en particulier pour les poudres.<\/p>\n\n\n\n<p>Lorsque deux couches rigides sont coll\u00e9es ensemble, toute d\u00e9formation peut cr\u00e9er de petites lacunes entre les couches, ce qui peut entra\u00eener un transfert d'aluminium, une d\u00e9coloration et d'autres probl\u00e8mes au fil du temps.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Causes_and_Mechanisms_of_Aluminum_Transfer\"><\/span>Causes et m\u00e9canismes du transfert d'aluminium<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Si l'on examine un sachet lamin\u00e9, la structure comprend g\u00e9n\u00e9ralement trois couches :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Printing_layer\"><\/span>Couche d'impression<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les encres \u00e0 base d'eau sont souvent utilis\u00e9es pour l'impression. Ces encres sont plus souples que les encres traditionnelles, ont des structures mol\u00e9culaires plus larges et adh\u00e8rent mieux, ce qui r\u00e9duit le risque de d\u00e9lamination.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Adhesive_layer\"><\/span>Couche adh\u00e9sive<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les adh\u00e9sifs souples, tels que les colles papier-plastique, permettent d'\u00e9viter les interstices et le d\u00e9collement de la couche d'aluminium lors du stockage ou de la manipulation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Aluminum_layer\"><\/span>Couche d'aluminium<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Le choix du substrat est essentiel. L'utilisation du DuPont 121 PET comme base garantit que la couche d'aluminium adh\u00e8re \u00e9troitement au substrat, \u00e9vitant ainsi la d\u00e9coloration et d'autres d\u00e9fauts.<\/p>\n\n\n\n<p>En ajustant ces trois couches - impression, adh\u00e9sif et m\u00e9tallisation - le risque de transfert d'aluminium peut \u00eatre minimis\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Effects_of_Aluminum_Transfer\"><\/span>Effets du transfert d'aluminium<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Le transfert d'aluminium ne provoque pas seulement une d\u00e9coloration. Il peut \u00e9galement entra\u00eener plusieurs probl\u00e8mes de performance :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Wrinkling_of_finished_products\"><\/span>Froissement des produits finis<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Si la couche adh\u00e9sive se fissure ou si la couche d'aluminium se s\u00e9pare, cela peut provoquer des rides en forme de tunnel qui affectent l'apparence de la poche.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Decreased_water_and_oxygen_barrier_properties\"><\/span>Diminution des propri\u00e9t\u00e9s de barri\u00e8re \u00e0 l'eau et \u00e0 l'oxyg\u00e8ne<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les lacunes permettent \u00e0 l'humidit\u00e9 et \u00e0 l'oxyg\u00e8ne de p\u00e9n\u00e9trer, ce qui compromet la dur\u00e9e de conservation du produit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Reduced_adhesive_performance\"><\/span>R\u00e9duction des performances de l'adh\u00e9sif<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Avec le temps, l'humidit\u00e9 qui p\u00e9n\u00e8tre par les interstices peut r\u00e9agir avec l'adh\u00e9sif, d\u00e9composer les composants de durcissement et provoquer un d\u00e9collement complet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Comprendre le transfert d'aluminium est essentiel pour concevoir des emballages m\u00e9tallis\u00e9s de haute qualit\u00e9. En s\u00e9lectionnant soigneusement les encres flexibles, les adh\u00e9sifs et les substrats, les fabricants peuvent produire des sachets durables et visuellement attrayants qui conservent leurs propri\u00e9t\u00e9s de barri\u00e8re au fil du temps.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/www.zkprintpack.com\/fr\/\">Zhongjia Packaging<\/a><\/strong> se sp\u00e9cialise dans les produits sur mesure, <strong><a href=\"https:\/\/www.zkprintpack.com\/fr\/water-based-ink-printing\/\">des solutions d'emballage souple respectueuses de l'environnement<\/a><\/strong>. Avec une grande exp\u00e9rience dans les lamin\u00e9s PET\/VMPET, <a href=\"https:\/\/www.zkprintpack.com\/fr\/water-based-ink-printing\/\">encres \u00e0 base d'eau<\/a>et des technologies de pointe en mati\u00e8re d'adh\u00e9sifs, nous garantissons <strong><a href=\"https:\/\/www.zkprintpack.com\/fr\/flexible-packaging-solutions\/\">des sachets de haute qualit\u00e9 <\/a><\/strong>avec un risque minimal de transfert d'aluminium. Nos solutions offrent des quantit\u00e9s minimales de commande, des prix directs et des conceptions sur mesure pour r\u00e9pondre aux besoins uniques des clients B2B dans le monde entier.<\/p>\n\n\n\n<p>Pour toute question concernant le transfert d'aluminium ou nos solutions d'emballage flexible, n'h\u00e9sitez pas \u00e0 nous contacter par email.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction Many customers have encountered this issue: the packaging bags they receive seem perfect at first, but after storage, they begin to show signs of discoloration or unexpected changes. This phenomenon can be confusing and may impact product quality, especially in B2B packaging applications. Today, Zhongjia Packaging will explore the common pitfalls in flexible packaging [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1669,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17],"tags":[36],"class_list":["post-1667","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs-news","tag-flexible-packaging-materials"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/posts\/1667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/comments?post=1667"}],"version-history":[{"count":0,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/posts\/1667\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/media\/1669"}],"wp:attachment":[{"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/media?parent=1667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/categories?post=1667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zkprintpack.com\/fr\/wp-json\/wp\/v2\/tags?post=1667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}