{"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":"lista-de-verificacion-de-compatibilidad-de-piezas-din18","status":"publish","type":"post","link":"https:\/\/www.packaging.si\/es\/din18-parts-compatibility-checklist\/","title":{"rendered":"Lista de verificaci\u00f3n de compatibilidad de piezas DIN18 para cuentagotas y roll-ons"},"content":{"rendered":"<p>Un cierre de cuentagotas o roll-on rara vez es una sola pieza. Es un sistema peque\u00f1o: cuello del frasco, tap\u00f3n o reductor de orificio, tapa o collar\u00edn, tetina, pipeta o bola. Cada pieza puede ser perfectamente correcta por s\u00ed sola y aun as\u00ed fallar en combinaci\u00f3n. El resultado es una tapa que no asienta, una pipeta que toca el fondo o un tap\u00f3n que se afloja despu\u00e9s del transporte.<\/p>\n<p>Esta lista de verificaci\u00f3n est\u00e1 pensada para compradores, responsables de desarrollo de producto y jefes de producci\u00f3n que quieren confirmar la compatibilidad primero sobre el papel y despu\u00e9s en una muestra. Se centra en el acabado de cuello DIN18, que es el est\u00e1ndar con el que m\u00e1s trabajamos, y en las piezas de nuestra <a href=\"https:\/\/www.packaging.si\/es\/categoria-producto\/piezas-y-componentes\/\">Piezas y componentes<\/a> .<\/p>\n<h2>Por qu\u00e9 se producen problemas de compatibilidad<\/h2>\n<p>Las causas m\u00e1s comunes son sencillas:<\/p>\n<ul>\n<li>Las piezas se piden a distintos proveedores y nadie las compara lado a lado.<\/li>\n<li>El acabado del cuello se da por supuesto en lugar de confirmarse (por ejemplo, que \u201c18 mm\u201d signifique lo mismo en todas partes).<\/li>\n<li>Se cambia un componente por motivos est\u00e9ticos, como un nuevo color de tapa, sin volver a comprobar el ajuste.<\/li>\n<li>El producto cambia (un aceite m\u00e1s espeso, una mezcla m\u00e1s vol\u00e1til) pero el cierre sigue siendo el mismo.<\/li>\n<\/ul>\n<p>Ninguna de estas causas es dif\u00edcil de prevenir. Solo necesitan un orden fijo de comprobaciones.<\/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=\"Lista de verificaci\u00f3n de compatibilidad de piezas DIN18 para cuentagotas y roll-ons\" 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>Paso 1: Confirmar el acabado del cuello<\/h2>\n<p>Empiece por el frasco. Anote el acabado del cuello tal como figura en la especificaci\u00f3n del frasco, no seg\u00fan lo que recuerde. En los frascos DIN18, todas las piezas del cierre deben especificarse para el mismo acabado. Si utiliza un cuello diferente o personalizado, ind\u00edquelo en su solicitud, ya que las piezas est\u00e1ndar podr\u00edan no encajar.<\/p>\n<p>Anote tambi\u00e9n c\u00f3mo est\u00e1 previsto que cierre el cierre. Algunos cierres sellan en el borde del cuello, otros mediante un tap\u00f3n interior que presiona en el orificio, y otros con ambos sistemas. Esto afecta a qu\u00e9 piezas necesita y a c\u00f3mo interact\u00faan.<\/p>\n<h3>Qu\u00e9 registrar<\/h3>\n<ul>\n<li>Designaci\u00f3n del acabado de cuello (DIN18 u otro)<\/li>\n<li>Volumen del frasco y color del vidrio<\/li>\n<li>Altura del frasco, que es importante para la longitud de la pipeta<\/li>\n<li>Si el frasco est\u00e1 destinado a un tap\u00f3n, a un conjunto cuentagotas o a un pulverizador<\/li>\n<\/ul>\n<h2>Paso 2: Elegir primero la funci\u00f3n de dosificaci\u00f3n<\/h2>\n<p>Decida c\u00f3mo sale el producto del frasco antes de elegir cualquier color o acabado. La funci\u00f3n determina la lista de piezas:<\/p>\n<ul>\n<li><strong>Dosificaci\u00f3n gota a gota:<\/strong> tetina, collar\u00edn y pipeta.<\/li>\n<li><strong>Vertido controlado o reducci\u00f3n de orificio:<\/strong> un tap\u00f3n interior o reductor de orificio m\u00e1s una tapa.<\/li>\n<li><strong>Aplicaci\u00f3n sobre la piel a lo largo de una superficie:<\/strong> un tap\u00f3n roll-on con bola y tapa.<\/li>\n<li><strong>Pulverizaci\u00f3n fina:<\/strong> un adaptador para pulverizador.<\/li>\n<\/ul>\n<p>Si todav\u00eda est\u00e1 decidiendo entre formatos, nuestro art\u00edculo sobre c\u00f3mo elegir un tap\u00f3n DIN18 seg\u00fan el uso cubre esa comparaci\u00f3n. Aqu\u00ed asumimos que la funci\u00f3n ya est\u00e1 elegida y nos centramos en que las piezas encajen entre s\u00ed.<\/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=\"Lista de verificaci\u00f3n de compatibilidad de piezas DIN18 para cuentagotas y roll-ons\" 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>Paso 3: Comprobar cada componente con sus vecinos<\/h2>\n<p>La tabla siguiente indica con qu\u00e9 debe coincidir cada pieza y el error que vemos con m\u00e1s frecuencia.<\/p>\n<table>\n<thead>\n<tr>\n<th>Componente<\/th>\n<th>Debe coincidir con<\/th>\n<th>Error com\u00fan<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Frasco<\/td>\n<td>Acabado del cuello, altura, volumen<\/td>\n<td>Dar por supuesto el acabado sin comprobar la especificaci\u00f3n<\/td>\n<\/tr>\n<tr>\n<td>Tap\u00f3n o reductor de orificio<\/td>\n<td>Orificio del frasco y la tapa que lo cubre<\/td>\n<td>Cambiar la tapa sin volver a probar el asiento del tap\u00f3n<\/td>\n<\/tr>\n<tr>\n<td>Tapa o collar\u00edn<\/td>\n<td>Rosca del cuello y la tetina o tap\u00f3n situado debajo<\/td>\n<td>Pedir un acabado solo por est\u00e9tica<\/td>\n<\/tr>\n<tr>\n<td>Tetina<\/td>\n<td>Abertura del collar\u00edn y parte superior de la pipeta; compatibilidad con el producto<\/td>\n<td>Ignorar c\u00f3mo afecta el producto al material<\/td>\n<\/tr>\n<tr>\n<td>Pipeta<\/td>\n<td>Altura del frasco y ajuste de la tetina<\/td>\n<td>Pipeta demasiado larga o demasiado corta para el frasco<\/td>\n<\/tr>\n<tr>\n<td>Tap\u00f3n roll-on con bola<\/td>\n<td>Cuello del frasco y viscosidad del llenado<\/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\/es\/tienda\/piezas-y-componentes\/reductores-guardseal\/reductor-roll-on-con-bola-de-acero-din18-con-inserto-transparente-y-tapon-de-pp-negro-sin-precinto-de-garantia\/\">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>Nuestras <a href=\"https:\/\/www.packaging.si\/es\/categoria-producto\/piezas-y-componentes\/reductores-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\/es\/categoria-producto\/piezas-y-componentes\/pipetas-de-vidrio-clearflow\/\">pipetas de vidrio<\/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>Preguntas frecuentes<\/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>\u00bfPuedo obtener muestras antes de pedir una caja?<\/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\/es\/tienda\/\">Explorar la tienda<\/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\/es\/wp-json\/wp\/v2\/posts\/902472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/comments?post=902472"}],"version-history":[{"count":1,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/posts\/902472\/revisions"}],"predecessor-version":[{"id":902476,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/posts\/902472\/revisions\/902476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/media\/902473"}],"wp:attachment":[{"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/media?parent=902472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/categories?post=902472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packaging.si\/es\/wp-json\/wp\/v2\/tags?post=902472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}