{"id":3833,"date":"2026-03-10T11:37:40","date_gmt":"2026-03-10T03:37:40","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?post_type=astra-portfolio&#038;p=3833"},"modified":"2026-03-10T11:44:45","modified_gmt":"2026-03-10T03:44:45","slug":"calcium-carbonate-coating-upgrade-for-a-tanzanian-pvc-pipe-manufacturer","status":"publish","type":"astra-portfolio","link":"https:\/\/calcium-carbonate.epic-powder.com\/fr\/astra-portfolio\/calcium-carbonate-coating-upgrade-for-a-tanzanian-pvc-pipe-manufacturer\/","title":{"rendered":"Am\u00e9lioration du rev\u00eatement en carbonate de calcium pour un fabricant tanzanien de tuyaux en PVC"},"content":{"rendered":"<h3 class=\"wp-block-heading\">1. Contexte du projet<\/h3>\n\n\n\n<p>Notre client est un fabricant leader de tuyaux en PVC et de produits plastiques en Tanzanie. Lors de la transformation des mati\u00e8res plastiques, le carbonate de calcium broy\u00e9 non trait\u00e9 pr\u00e9sente souvent une faible compatibilit\u00e9 avec les matrices polym\u00e8res. Cette incompatibilit\u00e9 peut entra\u00eener une diminution des propri\u00e9t\u00e9s m\u00e9caniques et une mauvaise fluidit\u00e9 de mise en \u0153uvre des tuyaux.<\/p>\n\n\n\n<p>Afin de r\u00e9duire les co\u00fbts des mati\u00e8res premi\u00e8res et d&#039;am\u00e9liorer la robustesse du produit, le client a opt\u00e9 pour la machine d&#039;enduction de poudre \u00e0 trois rouleaux Epic. Son objectif \u00e9tait d&#039;activer la surface du carbonate de calcium \u00e0 l&#039;aide d&#039;acide st\u00e9arique. Ce proc\u00e9d\u00e9 transforme la poudre d&#039;hydrophile en lipophile, assurant ainsi une meilleure int\u00e9gration aux r\u00e9sines plastiques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Solution technique :<a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/\"> Poudre \u00e9pique<\/a> <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/three-roller-coating-machine\/\">Syst\u00e8me de rev\u00eatement \u00e0 trois rouleaux<\/a> pour rev\u00eatement de carbonate de calcium <\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"580\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/Calcium-Carbonate-Coating-Machine.webp\" alt=\"\" class=\"wp-image-3835\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/Calcium-Carbonate-Coating-Machine.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/Calcium-Carbonate-Coating-Machine-300x218.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/Calcium-Carbonate-Coating-Machine-768x557.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/Calcium-Carbonate-Coating-Machine-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">machine \u00e0 enrober \u00e0 trois rouleaux<\/figcaption><\/figure>\n\n\n\n<p>La machine de rev\u00eatement \u00e0 trois rouleaux est l&#039;une des solutions les plus efficaces pour le traitement de surface du carbonate de calcium, notamment pour les charges plastiques.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Avantages des \u00e9quipements de base\u00a0:<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Couverture de rev\u00eatement \u00e9lev\u00e9e\u00a0:<\/strong> La zone de rev\u00eatement triangulaire form\u00e9e par les trois rouleaux g\u00e9n\u00e8re de puissantes forces de cisaillement. Ceci garantit la formation d&#039;une couche monomol\u00e9culaire uniforme d&#039;acide st\u00e9arique \u00e0 la surface des particules. Les taux d&#039;activation d\u00e9passent g\u00e9n\u00e9ralement 98%.<\/li>\n\n\n\n<li><strong>Production continue :<\/strong> Contrairement aux m\u00e9thodes d&#039;enrobage par lots traditionnelles, cette machine permet un fonctionnement continu 24h\/24 et 7j\/7, ce qui am\u00e9liore consid\u00e9rablement l&#039;efficacit\u00e9 globale de la production.<\/li>\n\n\n\n<li><strong>Contr\u00f4le pr\u00e9cis de la temp\u00e9rature\u00a0:<\/strong> Le syst\u00e8me int\u00e8gre un dispositif de chauffage et de refroidissement. L&#039;acide st\u00e9arique fond \u00e0 la temp\u00e9rature id\u00e9ale et se m\u00e9lange parfaitement \u00e0 la poudre, \u00e9vitant ainsi le gaspillage d&#039;additifs et la formation de grumeaux.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Param\u00e8tres de traitement et r\u00e9sultats<\/h3>\n\n\n\n<p>La ligne de production a fonctionn\u00e9 de mani\u00e8re stable avec les param\u00e8tres suivants\u00a0:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Principaux r\u00e9sultats<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hydrophobie sup\u00e9rieure :<\/strong> La poudre trait\u00e9e flotte parfaitement sur l&#039;eau. Ceci prouve que sa surface a \u00e9t\u00e9 recouverte avec succ\u00e8s de groupements lipophiles.<\/li>\n\n\n\n<li><strong>Absorption d&#039;huile r\u00e9duite\u00a0:<\/strong> Ce proc\u00e9d\u00e9 r\u00e9duit efficacement le pouvoir d&#039;absorption d&#039;huile du carbonate de calcium, ce qui diminue la quantit\u00e9 de plastifiant n\u00e9cessaire lors des \u00e9tapes de transformation ult\u00e9rieures du plastique.<\/li>\n\n\n\n<li><strong>Dispersibilit\u00e9 am\u00e9lior\u00e9e\u00a0:<\/strong> Lors de l&#039;extrusion des tubes en PVC, la poudre modifi\u00e9e se r\u00e9partit uniform\u00e9ment. Ceci am\u00e9liore consid\u00e9rablement la r\u00e9sistance \u00e0 la traction et aux chocs des tubes finis.<\/li>\n\n\n\n<li><strong>Sortie stable\u00a0:<\/strong> Le syst\u00e8me maintient une capacit\u00e9 constante de 300 \u00e0 500 kg\/h, ce qui correspond parfaitement aux exigences des lignes de production de moyenne envergure du client.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"16\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/fr\/wp-json\/wp\/v2\/astra-portfolio\/3833#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fr\/wp-json\/wp\/v2\/astra-portfolio\/3833#wpcf7-f16-o1\">\n<fieldset class=\"hidden-fields-container\"><input 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