{"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-verificacao-de-compatibilidade-de-pecas-din18","status":"publish","type":"post","link":"https:\/\/www.packaging.si\/pt\/din18-parts-compatibility-checklist\/","title":{"rendered":"Lista de Verifica\u00e7\u00e3o de Compatibilidade de Componentes DIN18 para Conta-Gotas e Roll-Ons"},"content":{"rendered":"<p>Um fecho de conta-gotas ou roll-on raramente \u00e9 uma s\u00f3 pe\u00e7a. \u00c9 um pequeno sistema: pesco\u00e7o do frasco, rolha ou reductor, tampa ou colar, tetina, pipeta ou esfera. Cada componente pode ser perfeitamente adequado isoladamente e, ainda assim, falhar em conjunto. O resultado \u00e9 uma tampa que n\u00e3o assenta, uma pipeta que toca no fundo ou uma rolha que se solta ap\u00f3s o transporte.<\/p>\n<p>Esta lista de verifica\u00e7\u00e3o destina-se a compradores, respons\u00e1veis pelo desenvolvimento de produtos e gestores de produ\u00e7\u00e3o que pretendem confirmar a compatibilidade primeiro no papel e depois numa amostra. Centra-se no acabamento de gargalo DIN18, que \u00e9 a norma com que trabalhamos mais, e nos componentes do nosso <a href=\"https:\/\/www.packaging.si\/pt\/categoria-produto\/pecas-componentes\/\">Pe\u00e7as &amp; componentes<\/a> .<\/p>\n<h2>Porque ocorrem problemas de compatibilidade<\/h2>\n<p>As causas mais comuns s\u00e3o simples:<\/p>\n<ul>\n<li>Os componentes s\u00e3o encomendados a fornecedores diferentes e ningu\u00e9m os compara lado a lado.<\/li>\n<li>O acabamento do gargalo \u00e9 assumido em vez de confirmado (por exemplo, \u201c18 mm\u201d interpretado como significando a mesma coisa em todo o lado).<\/li>\n<li>Um componente \u00e9 substitu\u00eddo por motivos est\u00e9ticos, como uma nova cor de tampa, sem voltar a verificar o encaixe.<\/li>\n<li>O produto muda (um \u00f3leo mais espesso, uma mistura mais vol\u00e1til), mas o fecho mant\u00e9m-se igual.<\/li>\n<\/ul>\n<p>Nenhuma destas situa\u00e7\u00f5es \u00e9 dif\u00edcil de prevenir. Basta seguir uma ordem fixa de verifica\u00e7\u00f5es.<\/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 Verifica\u00e7\u00e3o de Compatibilidade de Componentes DIN18 para Conta-Gotas e 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>Passo 1: Confirmar o acabamento do gargalo<\/h2>\n<p>Comece pelo frasco. Registe o acabamento do gargalo tal como indicado na especifica\u00e7\u00e3o do frasco, e n\u00e3o de mem\u00f3ria. Para frascos DIN18, todos os componentes do fecho devem ser especificados para o mesmo acabamento. Se utilizar um gargalo diferente ou personalizado, indique-o no seu pedido, pois os componentes standard podem n\u00e3o encaixar.<\/p>\n<p>Tenha tamb\u00e9m em conta a forma como o fecho deve vedar. Alguns fechos vedam no rebordo do gargalo, outros atrav\u00e9s de uma rolha interior que pressiona o orif\u00edcio, e alguns por ambos. Isto afeta os componentes necess\u00e1rios e a forma como interagem.<\/p>\n<h3>O que registar<\/h3>\n<ul>\n<li>Designa\u00e7\u00e3o do acabamento do gargalo (DIN18 ou outro)<\/li>\n<li>Volume do frasco e cor do vidro<\/li>\n<li>Altura do frasco, o que \u00e9 relevante para o comprimento da pipeta<\/li>\n<li>Se o frasco se destina a uma rolha, a um conjunto conta-gotas ou a um pulverizador<\/li>\n<\/ul>\n<h2>Passo 2: Escolher primeiro a fun\u00e7\u00e3o de dispensa\u00e7\u00e3o<\/h2>\n<p>Defina a forma como o produto sai do frasco antes de escolher qualquer cor ou acabamento. A fun\u00e7\u00e3o determina a lista de componentes:<\/p>\n<ul>\n<li><strong>Dosagem gota a gota:<\/strong> tetina, colar e pipeta.<\/li>\n<li><strong>Vazamento controlado ou redu\u00e7\u00e3o do orif\u00edcio:<\/strong> uma rolha ou reductor interior mais uma tampa.<\/li>\n<li><strong>Aplica\u00e7\u00e3o na pele ao longo de uma superf\u00edcie:<\/strong> uma rolha roll-on com esfera e tampa.<\/li>\n<li><strong>Pulveriza\u00e7\u00e3o fina:<\/strong> um sistema de fixa\u00e7\u00e3o para pulverizador.<\/li>\n<\/ul>\n<p>Se ainda estiver a decidir entre formatos, o nosso artigo sobre a escolha de uma rolha DIN18 por utiliza\u00e7\u00e3o aborda essa compara\u00e7\u00e3o. Aqui partimos do princ\u00edpio de que a fun\u00e7\u00e3o j\u00e1 est\u00e1 escolhida e concentramo-nos em fazer os componentes coincidir.<\/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 Verifica\u00e7\u00e3o de Compatibilidade de Componentes DIN18 para Conta-Gotas e 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>Passo 3: Verificar cada componente em rela\u00e7\u00e3o aos seus vizinhos<\/h2>\n<p>A tabela abaixo indica o que cada componente tem de corresponder e o erro que mais frequentemente observamos.<\/p>\n<table>\n<thead>\n<tr>\n<th>Componente<\/th>\n<th>Deve corresponder a<\/th>\n<th>Erro comum<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Frasco<\/td>\n<td>Acabamento do gargalo, altura, volume<\/td>\n<td>Assumir o acabamento sem verificar a especifica\u00e7\u00e3o<\/td>\n<\/tr>\n<tr>\n<td>Rolha ou reductor<\/td>\n<td>Orif\u00edcio do frasco e a tampa que o cobre<\/td>\n<td>Trocar a tampa sem voltar a testar o assento da rolha<\/td>\n<\/tr>\n<tr>\n<td>Tampa ou colar<\/td>\n<td>Rosca do gargalo e a tetina ou rolha por baixo<\/td>\n<td>Encomendar um acabamento apenas por quest\u00f5es est\u00e9ticas<\/td>\n<\/tr>\n<tr>\n<td>Tetina<\/td>\n<td>Abertura do colar e topo da pipeta; compatibilidade com o produto<\/td>\n<td>Ignorar a forma como o produto afeta o material<\/td>\n<\/tr>\n<tr>\n<td>Pipeta<\/td>\n<td>Altura do frasco e encaixe da tetina<\/td>\n<td>Pipeta demasiado longa ou demasiado curta para o frasco<\/td>\n<\/tr>\n<tr>\n<td>Esfera da rolha roll-on<\/td>\n<td>Gargalo do frasco e viscosidade do enchimento<\/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\/pt\/loja\/pecas-componentes\/redutores-guardseal\/roll-on-din18-com-esfera-de-aco-redutor-transparente-e-tampa-em-pp-preta-sem-anel-de-inviolabilidade\/\">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>As nossas <a href=\"https:\/\/www.packaging.si\/pt\/categoria-produto\/pecas-componentes\/redutores-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\/pt\/categoria-produto\/pecas-componentes\/pipetas-de-vidro-clearflow\/\">pipetas de vidro<\/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>Perguntas frequentes<\/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>Posso obter amostras antes de encomendar uma caixa?<\/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\/pt\/loja\/\">Explorar a loja<\/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\/pt\/wp-json\/wp\/v2\/posts\/902472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/comments?post=902472"}],"version-history":[{"count":1,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/posts\/902472\/revisions"}],"predecessor-version":[{"id":902476,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/posts\/902472\/revisions\/902476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/media\/902473"}],"wp:attachment":[{"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/media?parent=902472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/categories?post=902472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packaging.si\/pt\/wp-json\/wp\/v2\/tags?post=902472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}