{"id":23438,"date":"2021-09-30T00:00:00","date_gmt":"2021-09-30T00:00:00","guid":{"rendered":"https:\/\/www.emballagedigest.fr\/?p=23438"},"modified":"2021-10-19T09:20:59","modified_gmt":"2021-10-19T09:20:59","slug":"encollage-vers-une-approche-durable","status":"publish","type":"post","link":"https:\/\/www.emballagedigest.fr\/en\/encollage-vers-une-approche-durable\/","title":{"rendered":"Encollage : vers une approche durable"},"content":{"rendered":"<p>Si les clients privil\u00e9gient le hot-melt pour la formation et la fermeture des \u00e9tuis, cette solution tr\u00e8s consommatrice d\u2019\u00e9nergie pose la question du plastique contenu dans les adh\u00e9sifs.<\/p>\n<p>Longtemps consid\u00e9r\u00e9 comme une t\u00e2che simple suscitant peu l\u2019attention des fabricants de machines d\u2019emballage tout comme des clients finaux, l\u2019encollage des \u00e9tuis est devenu depuis quelques ann\u00e9es une m\u00e9canique de haute pr\u00e9cision et un v\u00e9ritable enjeu. La \u00abfaute\u00bb notamment \u00e0 la r\u00e9glementation europ\u00e9enne qui incite \u00e0 une utilisation moindre du plastique, constituant principal des adh\u00e9sifs industriels, et \u00e0 la sobri\u00e9t\u00e9 \u00e9nerg\u00e9tique, param\u00e8tre important pour la colle chaude. Celle-ci est justement privil\u00e9gi\u00e9e par les clients, au d\u00e9triment de la colle froide, pour le formage des \u00e9tuis comme pour leur fermeture. \u00abAvec le hot melt, le temps d\u2019ouverture est tr\u00e8s court. Entre le moment de formage du carton et celui o\u00f9 il est lib\u00e9r\u00e9 sur la ligne, il ne se passe que quelques centaines de millisecondes. Alors que pour la colle froide, le d\u00e9lai d\u2019ouverture est beaucoup plus long. C\u2019est bien mieux pour la fr\u00e9quence d\u2019assemblage des cartons. Quant \u00e0 la fermeture de l\u2019\u00e9tui, nous utilisons aussi de la colle chaude. Il peut toutefois exister une combinaison avec de la colle froide pour ajouter un m\u00e9canisme d\u2019inviolabilit\u00e9 car elle a une meilleure adh\u00e9rence\u00bb, explique Fabrice Valot, directeur des ventes Packaging Solutions de Nordson, le fabricant am\u00e9ricain d\u2019\u00e9quipements pour la d\u00e9pose d\u2019adh\u00e9sifs. Jean-Marie Schmidt, directeur g\u00e9n\u00e9ral de Baumer HHS, estime \u00e9galement que le double encollage chaud-froid a ses vertus pour la fermeture, pratiqu\u00e9e de mani\u00e8re syst\u00e9matique dans la pharmacie et seulement dans la cosm\u00e9tique pour les produits tr\u00e8s on\u00e9reux dont on veut assurer le client de l\u2019authenticit\u00e9. Mais il reconna\u00eet que le choix du march\u00e9 n\u2019est pas celui-l\u00e0&nbsp;: \u00abune directive de l\u2019Union europ\u00e9enne exige un tamper evidence, mais elle reste vague sur le plan technique et parle juste de preuve d\u2019effraction. La majorit\u00e9 de nos clients utilisent donc uniquement de la colle chaude alors qu\u2019elle est r\u00e9activable&nbsp;: il suffit de faire fondre la colle pour ouvrir l\u2019\u00e9tui sans effraction. Au contraire, avec le collage \u00e0 froid, vous \u00eates oblig\u00e9 de d\u00e9chirer l\u2019\u00e9tui pour l\u2019ouvrir. Il n\u2019existe pas, pour autant, de tendance sur le double encollage. La plupart des clients cherchent, avant tout, la solution la moins ch\u00e8re et aussi la plus simple techniquement car le double encollage demande plus de modifications sur les machines d\u2019emballage\u00bb.<\/p>\n<p><strong>Pistolet&nbsp;: optimisation continue<\/strong><br \/>\nLe probl\u00e8me de cette hot melt, que l\u2019on applique avec des pistolets, est qu\u2019elle est tr\u00e8s consommatrice d\u2019\u00e9nergie (fonctionnement du pistolet, fonte de la colle). Un choix va d\u2019abord devoir \u00eatre fait entre l\u2019application par un pistolet \u00e9lectrique, id\u00e9al pour des points de colle, ou \u00e9lectropneumatique, plus adapt\u00e9 \u00e0 un trait de colle. Baumer HHS met en avant la premi\u00e8re solution. \u00abNotre mod\u00e8le Tesla est parfait pour faire des points de colle \u00e0 haute cadence en rafale, de l\u2019ordre de 135 \u00e0 600 points\/seconde. L\u2019appareil consomme moins d\u2019\u00e9nergie qu\u2019un pistolet pneumatique car il n\u2019y a pas d\u2019air comprim\u00e9. Passer d\u2019une ligne continue \u00e0 des points constitue aussi une \u00e9conomie en quantit\u00e9 de colle de l\u2019ordre 50 \u00e0 70%. Or le pneumatique n\u2019est pas adapt\u00e9 pour faire de la rafale de points\u00bb, indique Jean-Marie Schmidt. La solution \u00e9lectrique pr\u00e9sente un autre avantage selon lui&nbsp;: \u00abpar rapport au pistolet \u00e9lectropneumatique, la dur\u00e9e de vie est 10 \u00e0 50 fois sup\u00e9rieure. Le co\u00fbt de maintenance et des pi\u00e8ces d\u00e9tach\u00e9es est beaucoup moins \u00e9lev\u00e9\u00bb. Dernier point positif de ce tout nouveau pistolet Tesla: une utilisation beaucoup plus simple qui aboutit \u00e0 une baisse de prix&nbsp;: \u00abnos mod\u00e8les \u00e9lectriques ant\u00e9rieurs n\u2019\u00e9taient pas utilis\u00e9s sur les machines car ils n\u00e9cessitaient l\u2019usage d\u2019une carte \u00e9lectronique amplificatrice, ce qui en augmentait fortement le co\u00fbt. Le syst\u00e8me Tesla est utilisable en 24 volts et install\u00e9 sans modification de la ligne. Il est m\u00eame possible de n\u2019acheter qu\u2019un pistolet et de le faire fonctionner sur des \u00e9quipements (tuyau, fondoir) qui ne sont pas de marque Baumer HHS\u00bb.<\/p>\n<p><em>Extrait de la revue n\u00b0 661 &#8211; Septembre 2021. Reproduction interdite sauf accord \u00e9crit d&rsquo;Emballage Digest ou mention du support<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Si les clients privil\u00e9gient le hot-melt pour la formation et la fermeture des \u00e9tuis, cette solution tr\u00e8s consommatrice d\u2019\u00e9nergie pose la question du plastique contenu dans les adh\u00e9sifs.<\/p>","protected":false},"author":1,"featured_media":33438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"iawp_total_views":5,"footnotes":""},"categories":[28,7],"tags":[],"class_list":["post-23438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article-entier","category-pharmacie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Encollage : vers une approche durable - Emballage Digest<\/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:\/\/www.emballagedigest.fr\/en\/encollage-vers-une-approche-durable\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Encollage : vers une approche durable - 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