{"id":902472,"date":"2026-11-06T10:40:53","date_gmt":"2026-11-06T09:40:53","guid":{"rendered":"https:\/\/www.packaging.si\/?p=902472"},"modified":"2026-11-06T10:40:53","modified_gmt":"2026-11-06T09:40:53","slug":"liste-de-controle-de-compatibilite-des-pieces-din18","status":"publish","type":"post","link":"https:\/\/www.packaging.si\/fr\/din18-parts-compatibility-checklist\/","title":{"rendered":"Liste de contr\u00f4le de compatibilit\u00e9 des pi\u00e8ces DIN18 pour compte-gouttes et roll-on"},"content":{"rendered":"<p>Une fermeture de type compte-gouttes ou roll-on est rarement constitu\u00e9e d'une seule pi\u00e8ce. C'est un petit syst\u00e8me : col du flacon, bouchon ou wiper, capuchon ou collerette, poire, pipette ou bille. Chaque pi\u00e8ce peut \u00eatre parfaitement conforme isol\u00e9ment et pourtant poser probl\u00e8me en association. Le r\u00e9sultat peut \u00eatre un capuchon qui ne se visse pas correctement, une pipette qui touche le fond, ou un bouchon qui se desserre pendant le transport.<\/p>\n<p>Cette liste de contr\u00f4le s'adresse aux acheteurs, aux responsables du d\u00e9veloppement produit et aux responsables de production qui souhaitent confirmer la compatibilit\u00e9 sur le papier d'abord, puis sur un \u00e9chantillon. Elle porte sur la finition de col DIN18, qui est la norme avec laquelle nous travaillons le plus, et sur les pi\u00e8ces de notre <a href=\"https:\/\/www.packaging.si\/fr\/categorie-produit\/pieces-composants\/\">Pi\u00e8ces &amp; composants<\/a> .<\/p>\n<h2>Pourquoi les probl\u00e8mes de compatibilit\u00e9 surviennent-ils<\/h2>\n<p>Les causes les plus fr\u00e9quentes sont simples :<\/p>\n<ul>\n<li>Les pi\u00e8ces sont command\u00e9es aupr\u00e8s de fournisseurs diff\u00e9rents et personne ne les compare c\u00f4te \u00e0 c\u00f4te.<\/li>\n<li>La finition du col est suppos\u00e9e plut\u00f4t que confirm\u00e9e (par exemple, \u201c 18 mm \u201d consid\u00e9r\u00e9 comme ayant la m\u00eame signification partout).<\/li>\n<li>Un composant est remplac\u00e9 pour une raison esth\u00e9tique, comme une nouvelle couleur de capuchon, sans rev\u00e9rifier l'ajustement.<\/li>\n<li>Le produit change (huile plus \u00e9paisse, m\u00e9lange plus volatil) mais la fermeture reste la m\u00eame.<\/li>\n<\/ul>\n<p>Aucune de ces situations n'est difficile \u00e0 \u00e9viter. Il suffit d'un ordre fixe de contr\u00f4les.<\/p>\n<figure class=\"wp-block-image size-large\"><img width=\"1024\" height=\"762\" src=\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-1024x762.jpg\" class=\"attachment-large size-large\" alt=\"Liste de contr\u00f4le de compatibilit\u00e9 des pi\u00e8ces DIN18 pour compte-gouttes et roll-on\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-1024x762.jpg 1024w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-300x223.jpg 300w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-768x571.jpg 768w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-16x12.jpg 16w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1-600x446.jpg 600w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-1.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<h2>\u00c9tape 1 : confirmer la finition du col<\/h2>\n<p>Commencez par le flacon. Notez la finition du col telle qu'indiqu\u00e9e dans la fiche technique du flacon, et non de m\u00e9moire. Pour les flacons DIN18, toutes les pi\u00e8ces de fermeture doivent \u00eatre sp\u00e9cifi\u00e9es pour la m\u00eame finition. Si vous utilisez un col diff\u00e9rent ou sur mesure, indiquez-le dans votre demande, car les pi\u00e8ces standard pourraient ne pas s'y adapter.<\/p>\n<p>Notez \u00e9galement le mode d'\u00e9tanch\u00e9it\u00e9 pr\u00e9vu de la fermeture. Certaines fermetures assurent l'\u00e9tanch\u00e9it\u00e9 sur le bord du col, d'autres par un bouchon int\u00e9rieur qui s'enfonce dans l'al\u00e9sage, et certaines par les deux. Cela d\u00e9termine les pi\u00e8ces n\u00e9cessaires et leur interaction.<\/p>\n<h3>\u00c9l\u00e9ments \u00e0 relever<\/h3>\n<ul>\n<li>D\u00e9signation de la finition du col (DIN18 ou autre)<\/li>\n<li>Contenance et couleur du verre du flacon<\/li>\n<li>Hauteur du flacon, qui d\u00e9termine la longueur de la pipette<\/li>\n<li>Destination du flacon : bouchon, ensemble compte-gouttes ou pulv\u00e9risateur<\/li>\n<\/ul>\n<h2>\u00c9tape 2 : choisir d'abord la fonction de distribution<\/h2>\n<p>D\u00e9finissez la mani\u00e8re dont le produit sort du flacon avant de choisir une couleur ou une finition. La fonction d\u00e9termine la liste des pi\u00e8ces :<\/p>\n<ul>\n<li><strong>Dosage goutte \u00e0 goutte :<\/strong> poire, collerette et pipette.<\/li>\n<li><strong>Versement contr\u00f4l\u00e9 ou r\u00e9duction d'orifice :<\/strong> un bouchon int\u00e9rieur ou un wiper, plus un capuchon.<\/li>\n<li><strong>Application sur la peau par glissement :<\/strong> un bouchon roll-on avec bille et capuchon.<\/li>\n<li><strong>Pulv\u00e9risation fine :<\/strong> un embout pulv\u00e9risateur.<\/li>\n<\/ul>\n<p>Si vous h\u00e9sitez encore entre plusieurs formats, notre article sur le choix d'un bouchon DIN18 selon l'usage pr\u00e9sente cette comparaison. Ici, nous partons du principe que la fonction est choisie et nous nous concentrons sur la compatibilit\u00e9 des pi\u00e8ces.<\/p>\n<figure class=\"wp-block-image size-large\"><img width=\"1024\" height=\"618\" src=\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-1024x618.jpg\" class=\"attachment-large size-large\" alt=\"Liste de contr\u00f4le de compatibilit\u00e9 des pi\u00e8ces DIN18 pour compte-gouttes et roll-on\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-1024x618.jpg 1024w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-300x181.jpg 300w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-768x464.jpg 768w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-18x12.jpg 18w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2-600x362.jpg 600w, https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/din18-parts-compatibility-checklist-for-droppers-and-roll-ons-2.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<h2>\u00c9tape 3 : v\u00e9rifier chaque composant par rapport \u00e0 ses voisins<\/h2>\n<p>Le tableau ci-dessous indique \u00e0 quoi chaque pi\u00e8ce doit correspondre, ainsi que l'erreur que nous constatons le plus souvent.<\/p>\n<table>\n<thead>\n<tr>\n<th>Composant<\/th>\n<th>Doit correspondre \u00e0<\/th>\n<th>Erreur courante<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Flacon<\/td>\n<td>Finition du col, hauteur, contenance<\/td>\n<td>Supposer la finition sans v\u00e9rifier la fiche technique<\/td>\n<\/tr>\n<tr>\n<td>Bouchon ou wiper<\/td>\n<td>Al\u00e9sage du flacon et capuchon qui le recouvre<\/td>\n<td>Changer le capuchon sans retester l'assise du bouchon<\/td>\n<\/tr>\n<tr>\n<td>Capuchon ou collerette<\/td>\n<td>Filetage du col et poire ou bouchon situ\u00e9 en dessous<\/td>\n<td>Commander une finition uniquement pour l'esth\u00e9tique<\/td>\n<\/tr>\n<tr>\n<td>T\u00e9tine<\/td>\n<td>Ouverture de la collerette et haut de la pipette ; compatibilit\u00e9 avec le produit<\/td>\n<td>Ignorer l'effet du produit sur le mat\u00e9riau<\/td>\n<\/tr>\n<tr>\n<td>Pipette<\/td>\n<td>Hauteur du flacon et ajustement de la poire<\/td>\n<td>Pipette trop longue ou trop courte pour le flacon<\/td>\n<\/tr>\n<tr>\n<td>Bouchon roll-on \u00e0 bille<\/td>\n<td>Col du flacon et viscosit\u00e9 du produit de remplissage<\/td>\n<td>Testing with water instead of the real product<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Step 4: Think about the product, not just the parts<\/h2>\n<p>Your formulation is part of the system. Oils, alcohol-based blends, essential oils and water-based serums behave differently against plastics and elastomers. Before approving a combination, ask:<\/p>\n<ul>\n<li>Is the teat material suitable for the liquid you fill? NBR, silicone and TPE respond differently to different liquids, so test with your actual formula.<\/li>\n<li>Does the product contain strong solvents or fragrance components that may soften or swell plastic parts?<\/li>\n<li>Is the liquid thin enough to leak around a plug, or thick enough to flow poorly through a roll-on ball seat?<\/li>\n<\/ul>\n<p>We do not state chemical resistance data unless it is in the product specification, so the practical answer is always to run a compatibility test with your own product and your chosen parts.<\/p>\n<h2>Step 5: Roll-on sets, a worked example<\/h2>\n<p>Roll-on sets show why a combined check matters. A set such as the <a href=\"https:\/\/www.packaging.si\/fr\/boutique\/pieces-composants\/reducteurs-guardseal\/roll-on-a-bille-en-acier-din18-avec-insert-transparent-et-bouchon-pp-noir-sans-bague-dinviolabilite\/\">steel ball roll-on plug for DIN18 bottles with a transparent plug and black PP screw cap<\/a> brings together a stainless steel ball, a transparent plug and a screw cap. The plug holds the ball and seats in the neck, and the cap closes over it.<\/p>\n<p>Before ordering a carton, check:<\/p>\n<ol>\n<li>That the bottle is a DIN18 finish.<\/li>\n<li>That the fill is suitable for a ball applicator. Very thin liquids may run more freely than you want.<\/li>\n<li>That the cap color suits the bottle and label design. The same set is offered with different cap colors, so match it to your artwork early.<\/li>\n<li>That the cap closes fully and feels consistent across several units, not only one sample.<\/li>\n<\/ol>\n<p>Nos <a href=\"https:\/\/www.packaging.si\/fr\/categorie-produit\/pieces-composants\/reducteurs-guardseal\/\">GuardSeal plug range<\/a> lists the other plug types if a roll-on is not the right format for your product.<\/p>\n<h2>Step 6: Check pipette and bottle height together<\/h2>\n<p>Pipettes are the part most often mismatched to the bottle. If the tip rests on the bottom, it can limit draw-up and make the last portion of product hard to reach. If it is too short, the tube may not reach the liquid as the level drops. Always measure the sealed assembly with the bottle upright rather than comparing two numbers on paper. Our <a href=\"https:\/\/www.packaging.si\/fr\/categorie-produit\/pieces-composants\/pipettes-en-verre-clearflow\/\">pipettes en verre<\/a> are available in more than one format, so pick based on the bottle you actually use.<\/p>\n<h2>Step 7: Run a small pilot before the full order<\/h2>\n<p>A short pilot catches most of what a spec sheet cannot. A reasonable routine:<\/p>\n<ol>\n<li>Assemble five to ten complete units with the exact parts you plan to order.<\/li>\n<li>Fill them with the real product, not a stand-in.<\/li>\n<li>Cap with the torque or pressure your line will use.<\/li>\n<li>Store some upright and some on their sides for a few days, then inspect for seepage at the neck.<\/li>\n<li>Dispense from each unit and check that the function is consistent.<\/li>\n<li>Ship a few units in your normal carton and check them again on arrival.<\/li>\n<\/ol>\n<p>Record the results with part descriptions, so a reorder months later uses the same combination.<\/p>\n<h2>Keep a simple parts record<\/h2>\n<p>Once a combination works, document it. A one-page record is enough:<\/p>\n<ul>\n<li>Bottle description and neck finish<\/li>\n<li>Every component with its description and color<\/li>\n<li>Fill product and batch used in the test<\/li>\n<li>Date of the test and the person who approved it<\/li>\n<\/ul>\n<p>When any part changes, repeat the pilot. It takes a short time compared with the cost of a recalled batch.<\/p>\n<h2>FAQ<\/h2>\n<h3>Are all DIN18 parts interchangeable?<\/h3>\n<p>They are designed around the same neck finish, but you should still confirm fit with a sample. Differences in plug design, collar shape and cap style can affect how parts work together.<\/p>\n<h3>Can I change only the cap color on an existing assembly?<\/h3>\n<p>Usually yes if the cap model stays the same, but check that the new batch seats and seals the same way. If the cap style changes, treat it as a new combination and test it.<\/p>\n<h3>Should I test with water or my actual product?<\/h3>\n<p>Use your actual product. Viscosity, solvents and fragrance components can change how a plug seals, how a ball rolls and how an elastomer behaves.<\/p>\n<h3>Puis-je obtenir des \u00e9chantillons avant de commander un carton ?<\/h3>\n<p>Yes. Contact us with your bottle details and intended use, and we can advise on a combination and arrange samples where available.<\/p>\n<p>Ready to compare parts? <a href=\"https:\/\/www.packaging.si\/fr\/boutique\/\">Parcourir la boutique<\/a> or contact us for samples and advice on a DIN18 combination that fits your product.<\/p>","protected":false},"excerpt":{"rendered":"<p>Most closure problems come from parts that were never checked against each other. This checklist shows what to verify for DIN18 bottles, plugs, caps, collars, teats and pipettes before you order a carton.<\/p>","protected":false},"author":1,"featured_media":902473,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[246],"tags":[91116,91033,91089,91119,91117,91118],"class_list":["post-902472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dropper-bottles","tag-compatibility","tag-din18","tag-dropper-assembly","tag-packaging-checklist","tag-parts-and-components","tag-roll-on-plugs"],"_links":{"self":[{"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/posts\/902472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/comments?post=902472"}],"version-history":[{"count":1,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/posts\/902472\/revisions"}],"predecessor-version":[{"id":902476,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/posts\/902472\/revisions\/902476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/media\/902473"}],"wp:attachment":[{"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/media?parent=902472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/categories?post=902472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packaging.si\/fr\/wp-json\/wp\/v2\/tags?post=902472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}