{"id":12201,"date":"2022-01-27T11:43:27","date_gmt":"2022-01-27T03:43:27","guid":{"rendered":"https:\/\/www.sanait.com\/?p=12201"},"modified":"2022-01-27T11:43:28","modified_gmt":"2022-01-27T03:43:28","slug":"analysis-of-quality-problems-in-screen-printing-of-acrylic-products","status":"publish","type":"post","link":"https:\/\/www.sanait.com\/fr\/analysis-of-quality-problems-in-screen-printing-of-acrylic-products\/","title":{"rendered":"Analyse des probl\u00e8mes de qualit\u00e9 dans la s\u00e9rigraphie des produits acryliques"},"content":{"rendered":"<ol class=\"wp-block-list\"><li>Le choix de la maille de l'\u00e9cran n'est pas appropri\u00e9 : si la maille est trop haute et que le trou de la maille est plus petit que le diam\u00e8tre des particules du mat\u00e9riau d'impression, la maille sera bloqu\u00e9e ; Mauvaise performance du niveau graphique ;<\/li><li>Avant de fabriquer l'\u00e9cran, il convient de le d\u00e9graisser et de le d\u00e9contaminer afin de s'assurer que le film photosensible et l'\u00e9cran sont fermement combin\u00e9s, de sorte que l'\u00e9cran puisse produire des graphiques et des textes fins et que la dur\u00e9e d'impression de l'\u00e9cran puisse \u00eatre prolong\u00e9e.<\/li><li>Lors de la fabrication des plaques, le s\u00e9chage de la couche adh\u00e9sive photosensible sur la plaque de l'\u00e9cran doit \u00eatre suffisant et le temps d'impression de la plaque doit \u00eatre parfait. Apr\u00e8s le d\u00e9veloppement de l'\u00e9cran, un traitement post-exposition est ajout\u00e9, ce qui permet d'augmenter la dur\u00e9e de vie de l'\u00e9cran.<\/li><li>Lors du processus de s\u00e9rigraphie, la lame de la raclette doit \u00eatre en bon contact avec la surface du produit en verre. Si ce n'est pas le cas ou si la lame de la raclette n'est pas bien aiguis\u00e9e, les contours et les niveaux subtils de l'image et du texte seront in\u00e9vitablement flous et surimprim\u00e9s. N'attendez pas. Notez que les marques de positionnement \"en croix\" sur l'\u00e9cran de surimpression multicolore doivent \u00eatre coh\u00e9rentes et se chevaucher correctement.<\/li><li>Avant la s\u00e9rigraphie, il est n\u00e9cessaire d'\u00e9liminer les taches d'huile, la poussi\u00e8re et les produits divers sur la surface des produits acryliques. Les m\u00e9thodes d'\u00e9limination sont les suivantes : utiliser de l'acide chlorhydrique dilu\u00e9 pour \u00e9liminer les ions sodium des produits acryliques, ce qui am\u00e9liore la force d'adh\u00e9rence de l'acrylique et des mat\u00e9riaux d'impression ; l'alcool et l'ac\u00e9tone peuvent \u00e9galement \u00eatre utilis\u00e9s. L'alcool et l'ac\u00e9tone peuvent \u00e9galement \u00eatre utilis\u00e9s. Il est \u00e9galement possible d'essuyer les taches d'huile avec du trichlor\u00e9thyl\u00e8ne.<\/li><li>Les produits acryliques doivent \u00eatre plac\u00e9s sur le lieu de s\u00e9rigraphie avant la s\u00e9rigraphie, et leurs dimensions doivent \u00eatre mesur\u00e9es avant la s\u00e9rigraphie, afin que la distance de l'\u00e9cran et la pression de la raclette pendant la s\u00e9rigraphie puissent \u00eatre bien contr\u00f4l\u00e9es, de sorte que les images et les textes fins soient clairs et superpos\u00e9s. Bonne sensation, nuances de couleurs homog\u00e8nes.<\/li><li>Augmenter la pression de la raclette pendant la s\u00e9rigraphie, afin que le mat\u00e9riau d'impression puisse remplir la surface du produit acrylique et que la combinaison soit ferme.<\/li><li>Distinguer les deux faces de la feuille acrylique<\/li><li>Certains probl\u00e8mes de qualit\u00e9 d\u00e9coulent du contr\u00f4le des ingr\u00e9dients, de la temp\u00e9rature et de la dur\u00e9e des mat\u00e9riaux d'impression.<\/li><\/ol>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12201","post","type-post","status-publish","format-standard","hentry","category-industrial-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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