{"id":4369,"date":"2026-06-10T10:10:28","date_gmt":"2026-06-10T10:10:28","guid":{"rendered":"https:\/\/pfmscreen.com\/news-events\/welded-framed-pleated-extruder-screen-packs\/"},"modified":"2026-06-22T08:20:27","modified_gmt":"2026-06-22T08:20:27","slug":"paquets-de-tamis-dextrusion-plisses-a-cadre-soude","status":"publish","type":"post","link":"https:\/\/pfmscreen.com\/fr\/blogs\/welded-framed-pleated-extruder-screen-packs\/","title":{"rendered":"Filtres d&#039;extrusion soud\u00e9s, encadr\u00e9s ou pliss\u00e9s\u00a0: lequel convient le mieux \u00e0 votre proc\u00e9d\u00e9\u00a0?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Lors de l&#039;approvisionnement en filtres pour extrudeuses, l&#039;une des premi\u00e8res d\u00e9cisions \u00e0 prendre concerne le type de construction\u00a0: <strong>soud\u00e9<\/strong>, <strong>encadr\u00e9<\/strong>, ou <strong>pliss\u00e9<\/strong>. Chaque mod\u00e8le poss\u00e8de des caract\u00e9ristiques structurelles distinctes, des performances de filtration sp\u00e9cifiques et une aptitude \u00e0 \u00eatre adapt\u00e9 \u00e0 diff\u00e9rentes conditions d&#039;extrusion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choisir le mauvais type de filtre entra\u00eene une d\u00e9faillance pr\u00e9matur\u00e9e, une augmentation des pertes de charge, des changements plus fr\u00e9quents et, au final, des co\u00fbts d&#039;exploitation plus \u00e9lev\u00e9s. Ce guide vous propose une comparaison technique claire pour vous aider \u00e0 faire le bon choix.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-what-is-an-extruder-screen-pack\" class=\"wp-block-heading\">Qu&#039;est-ce qu&#039;un kit de tamis pour extrudeuse\u00a0?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un bloc de tamis se place dans l&#039;adaptateur de fili\u00e8re ou le changeur de tamis, entre la vis d&#039;extrusion et la fili\u00e8re. Son r\u00f4le est de\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Filtrer les contaminants solides et les gels pr\u00e9sents dans le polym\u00e8re fondu.<\/li>\n\n\n\n<li>Augmenter la contre-pression pour am\u00e9liorer l&#039;homog\u00e9n\u00e9it\u00e9 de la fusion<\/li>\n\n\n\n<li>Prot\u00e9ger l&#039;outillage en aval (matrices, pompes \u00e0 engrenages, fili\u00e8res)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">La plupart des emballages de tamis sont constitu\u00e9s d&#039;une ou plusieurs couches de treillis m\u00e9tallique tiss\u00e9, mais la mani\u00e8re dont ces couches sont maintenues ensemble d\u00e9finit le type d&#039;emballage.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-construction-type-1-welded-screen-packs\" class=\"wp-block-heading\">Type de construction 1 : Packs d&#039;\u00e9crans soud\u00e9s<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pfmscreen.com\/fr\/elements-de-filtre-a-mailles\/ecrans-dextrudeuse\/paquets-de-tamis-dextrudeuse-soudes\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Welded-Extruder-Screen-Packs.jpg\" alt=\"Packs de tamis d&#039;extrudeuse soud\u00e9s\" class=\"wp-image-2273\" srcset=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Welded-Extruder-Screen-Packs.jpg 600w, https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Welded-Extruder-Screen-Packs-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n\n\n\n<h3 id=\"h-how-they-re-made\" class=\"wp-block-heading\">Comment ils sont fabriqu\u00e9s<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les panneaux de tamisage soud\u00e9s sont fabriqu\u00e9s par soudage par r\u00e9sistance des couches de treillis, soit sur les bords, soit selon une grille de points de soudure. Aucun cadre n&#039;est utilis\u00e9. La soudure fusionne directement les fils du treillis.<\/p>\n\n\n\n<h3 id=\"h-key-characteristics\" class=\"wp-block-heading\">Caract\u00e9ristiques cl\u00e9s<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Propri\u00e9t\u00e9<\/th><th>D\u00e9tail<\/th><\/tr><\/thead><tbody><tr><td>Traitement des bords<\/td><td>P\u00e9rim\u00e8tre soud\u00e9 (sans cadre)<\/td><\/tr><tr><td>\u00c9paisseur<\/td><td>Fin \u2014 g\u00e9n\u00e9ralement de 1 \u00e0 4 mm d&#039;\u00e9paisseur totale<\/td><\/tr><tr><td>Rigidit\u00e9<\/td><td>Mod\u00e9r\u00e9 \u2014 les points de soudure emp\u00eachent la s\u00e9paration des couches<\/td><\/tr><tr><td>Pression de service maximale<\/td><td>Jusqu&#039;\u00e0 environ 200 \u00e0 250 bars selon les sp\u00e9cifications du maillage<\/td><\/tr><tr><td>nettoyabilit\u00e9<\/td><td>G\u00e9n\u00e9ralement non nettoy\u00e9 ; \u00e0 usage unique<\/td><\/tr><tr><td>Configurations courantes<\/td><td>Carr\u00e9e, circulaire, formes personnalis\u00e9es<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-when-to-choose-welded\" class=\"wp-block-heading\">Quand choisir le soudage<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les paquets soud\u00e9s fonctionnent mieux dans <strong>contamination mod\u00e9r\u00e9e, viscosit\u00e9 moyenne<\/strong> proc\u00e9d\u00e9s d&#039;extrusion o\u00f9 :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le changeur d&#039;\u00e9cran ou la plaque de rupture assure le support structurel<\/li>\n\n\n\n<li>Vous avez besoin d&#039;un <strong>paquet mince<\/strong> qui s&#039;adapte aux encoches peu profondes des plaques de disjoncteur<\/li>\n\n\n\n<li>L&#039;int\u00e9grit\u00e9 des couches est essentielle lors de l&#039;installation (les couches ne doivent ni glisser ni se d\u00e9placer).<\/li>\n\n\n\n<li>Vous courez <strong>PE, PP, PS ou ABS<\/strong> aux pressions d&#039;extrusion standard<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Applications typiques\u00a0:<\/strong> Extrusion de film souffl\u00e9, extrusion de tubes, extrusion de t\u00f4les, extrusion de profil\u00e9s<\/p>\n\n\n\n<h3 id=\"h-limitations\" class=\"wp-block-heading\">Limites<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les points de soudure peuvent cr\u00e9er des perturbations d&#039;\u00e9coulement pr\u00e8s des bords.<\/li>\n\n\n\n<li>Ne convient pas aux tr\u00e8s hautes pressions sans support de cadre suppl\u00e9mentaire.<\/li>\n\n\n\n<li>Surface inf\u00e9rieure \u00e0 celle des mod\u00e8les pliss\u00e9s \u00e0 encombrement \u00e9quivalent<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-construction-type-2-framed-screen-packs\" class=\"wp-block-heading\">Type de construction 2\u00a0: Packs d\u2019\u00e9crans encadr\u00e9s<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pfmscreen.com\/fr\/elements-de-filtre-a-mailles\/ecrans-dextrudeuse\/chassis-extrudeuse-ecran-packs\/\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Framed-Extruder-Screen-Packs-2.jpg\" alt=\"Packs d&#039;\u00e9crans d&#039;extrudeuse encadr\u00e9s\" class=\"wp-image-2367\" srcset=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Framed-Extruder-Screen-Packs-2.jpg 600w, https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Framed-Extruder-Screen-Packs-2-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n\n\n\n<h3 id=\"h-how-they-re-made-0\" class=\"wp-block-heading\">Comment ils sont fabriqu\u00e9s<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les panneaux de protection encadr\u00e9s sont constitu\u00e9s d&#039;une ou plusieurs couches de treillis m\u00e9tallique, ench\u00e2ss\u00e9es dans un anneau ou un cadre m\u00e9tallique rigide, g\u00e9n\u00e9ralement en acier inoxydable ou en acier au carbone. Le cadre est emmanch\u00e9 \u00e0 force ou soud\u00e9 sur le diam\u00e8tre ext\u00e9rieur ou le p\u00e9rim\u00e8tre du treillis.<\/p>\n\n\n\n<h3 id=\"h-key-characteristics-0\" class=\"wp-block-heading\">Caract\u00e9ristiques cl\u00e9s<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Propri\u00e9t\u00e9<\/th><th>D\u00e9tail<\/th><\/tr><\/thead><tbody><tr><td>Traitement des bords<\/td><td>Cadre m\u00e9tallique rigide (bordure annulaire ou carr\u00e9e)<\/td><\/tr><tr><td>\u00c9paisseur<\/td><td>Moyen \u2014 le cadre ajoute 2 \u00e0 5 mm \u00e0 la hauteur du sac<\/td><\/tr><tr><td>Rigidit\u00e9<\/td><td>Cadre haut emp\u00eachant la d\u00e9formation sous pression<\/td><\/tr><tr><td>Pression de service maximale<\/td><td>250 \u00e0 400+ bar<\/td><\/tr><tr><td>Scellage<\/td><td>Le cadre assure une \u00e9tanch\u00e9it\u00e9 parfaite contre la face de la plaque du brise-lames<\/td><\/tr><tr><td>Configurations courantes<\/td><td>Circulaire avec anneau ext\u00e9rieur, carr\u00e9 avec bordure compl\u00e8te<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-when-to-choose-framed\" class=\"wp-block-heading\">Quand choisir un cadre<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les sacs \u00e0 dos encadr\u00e9s sont le choix privil\u00e9gi\u00e9 lorsque\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Les pressions de fonctionnement sont \u00e9lev\u00e9es<\/strong> (au-dessus de 200 bars de fa\u00e7on constante)<\/li>\n\n\n\n<li>Le processus implique <strong>polym\u00e8res \u00e0 haute viscosit\u00e9<\/strong> (PET, PA, r\u00e9sines techniques) qui g\u00e9n\u00e8rent une pression de fusion importante<\/li>\n\n\n\n<li>Vous avez besoin d&#039;un <strong>joint positif<\/strong> pour \u00e9viter que la fonte ne d\u00e9borde sur les bords de l&#039;\u00e9cran<\/li>\n\n\n\n<li>Le design du changeur d&#039;\u00e9cran comporte un <strong>profond renfoncement<\/strong> ou n\u00e9cessite un pack d&#039;\u00e9cran auto-positionnable<\/li>\n\n\n\n<li>Vous courez <strong>Changeurs d&#039;\u00e9cran sans assistance continue<\/strong> (par exemple, changeurs de tamis \u00e0 plaque coulissante ou \u00e0 boulon)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Applications typiques\u00a0:<\/strong> Filage de fibres PET, compoundage de r\u00e9sines techniques, tubes \u00e0 paroi \u00e9paisse, production de m\u00e9langes-ma\u00eetres<\/p>\n\n\n\n<h3 id=\"h-limitations-0\" class=\"wp-block-heading\">Limites<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plus lourds que les paquets soud\u00e9s \u2014 co\u00fbt des mat\u00e9riaux plus \u00e9lev\u00e9<\/li>\n\n\n\n<li>Le cadre r\u00e9duit l\u00e9g\u00e8rement la surface de filtration active par rapport aux mod\u00e8les \u00e0 face soud\u00e9e int\u00e9grale.<\/li>\n\n\n\n<li>Co\u00fbt unitaire plus \u00e9lev\u00e9, notamment pour les alliages exotiques<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-construction-type-3-pleated-screen-packs\" class=\"wp-block-heading\">Type de construction 3\u00a0: Packs d\u2019\u00e9crans pliss\u00e9s<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pfmscreen.com\/fr\/elements-de-filtre-a-mailles\/ecrans-dextrudeuse\/paquets-de-tamis-plisses-pour-extrudeuses\/\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Pleated-Extruder-Screen-Packs-3.jpg\" alt=\"Packs de tamis pliss\u00e9s pour extrudeuses\" class=\"wp-image-2380\" srcset=\"https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Pleated-Extruder-Screen-Packs-3.jpg 600w, https:\/\/pfmscreen.com\/wp-content\/uploads\/2025\/12\/Pleated-Extruder-Screen-Packs-3-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n\n\n\n<h3 id=\"h-how-they-re-made-1\" class=\"wp-block-heading\">Comment ils sont fabriqu\u00e9s<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les filtres pliss\u00e9s replient le m\u00e9dia filtrant \u2014 g\u00e9n\u00e9ralement une maille fine ou une structure multicouche composite \u2014 en forme d&#039;accord\u00e9on. L&#039;\u00e9l\u00e9ment pliss\u00e9 est ensuite assembl\u00e9 dans un cadre ou un bo\u00eetier de support. Cette approche diff\u00e8re fondamentalement de celle des filtres plats soud\u00e9s ou encadr\u00e9s.<\/p>\n\n\n\n<h3 id=\"h-key-characteristics-1\" class=\"wp-block-heading\">Caract\u00e9ristiques cl\u00e9s<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Propri\u00e9t\u00e9<\/th><th>D\u00e9tail<\/th><\/tr><\/thead><tbody><tr><td>Zone de filtration<\/td><td>3 \u00e0 8 fois plus grand que l&#039;\u00e9quivalent en kit<\/td><\/tr><tr><td>Pression de service<\/td><td>Mod\u00e9r\u00e9e \u2014 g\u00e9n\u00e9ralement jusqu&#039;\u00e0 150\u2013200 bars<\/td><\/tr><tr><td>Dur\u00e9e de vie<\/td><td>Nettement plus longue gr\u00e2ce \u00e0 une plus grande capacit\u00e9 de r\u00e9tention des impuret\u00e9s<\/td><\/tr><tr><td>chute de pression<\/td><td>\u0394P initial plus faible pour une classification en microns \u00e9quivalente<\/td><\/tr><tr><td>facteur de forme<\/td><td>Disque, cartouche ou \u00e9l\u00e9ment pliss\u00e9 sur mesure<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-when-to-choose-pleated\" class=\"wp-block-heading\">Quand choisir des plis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les paquets pliss\u00e9s offrent un avantage majeur lorsque\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Les niveaux de contamination sont \u00e9lev\u00e9s<\/strong> (mat\u00e9riaux recycl\u00e9s, broy\u00e9s, r\u00e9sine post-consommation)<\/li>\n\n\n\n<li>Tu veux <strong>prolonger les intervalles d&#039;entretien<\/strong> entre les changements d&#039;\u00e9cran pour r\u00e9duire le temps d&#039;arr\u00eat<\/li>\n\n\n\n<li>Votre processus est <strong>sensible \u00e0 la pression<\/strong> et vous devez minimiser la perte de pression<\/li>\n\n\n\n<li>Vous utilisez une filtration fine (inf\u00e9rieure \u00e0 80 microns) et avez besoin de plus de surface pour maintenir le d\u00e9bit.<\/li>\n\n\n\n<li>Le changeur d&#039;\u00e9cran est con\u00e7u pour les \u00e9l\u00e9ments pliss\u00e9s (certains syst\u00e8mes \u00e0 courroie continue ou \u00e0 rin\u00e7age arri\u00e8re).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Applications typiques\u00a0:<\/strong> Lignes de recyclage du plastique, traitement du PET post-consommation, PP\/PEHD fortement contamin\u00e9, production de concentr\u00e9s de couleur<\/p>\n\n\n\n<h3 id=\"h-limitations-1\" class=\"wp-block-heading\">Limites<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Non compatible avec tous les mod\u00e8les de changeurs d&#039;\u00e9cran (n\u00e9cessite une g\u00e9om\u00e9trie de bo\u00eetier sp\u00e9cifique)<\/li>\n\n\n\n<li>Co\u00fbt unitaire initial plus \u00e9lev\u00e9<\/li>\n\n\n\n<li>Les m\u00e9dias pliss\u00e9s peuvent \u00eatre plus sensibles aux surtensions et aux chocs thermiques.<\/li>\n\n\n\n<li>Ne convient pas aux tr\u00e8s hautes pressions sans structure de support renforc\u00e9e.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-side-by-side-comparison\" class=\"wp-block-heading\">Comparaison c\u00f4te \u00e0 c\u00f4te<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Param\u00e8tre<\/th><th>Soud\u00e9<\/th><th>Encadr\u00e9<\/th><th>Pliss\u00e9<\/th><\/tr><\/thead><tbody><tr><td>Surface de filtration<\/td><td>1\u00d7 (ligne de base)<\/td><td>~0,9\u00d7 (le cadre r\u00e9duit la surface)<\/td><td>3\u20138\u00d7<\/td><\/tr><tr><td>Tol\u00e9rance \u00e0 la pression maximale<\/td><td>Moyen (jusqu&#039;\u00e0 environ 250 bars)<\/td><td>\u00c9lev\u00e9 (250\u2013400+ bar)<\/td><td>Inf\u00e9rieur (jusqu&#039;\u00e0 environ 200 bars)<\/td><\/tr><tr><td>chute de pression (initiale)<\/td><td>Moyen<\/td><td>Moyen<\/td><td>Faible<\/td><\/tr><tr><td>Dur\u00e9e de vie<\/td><td>Standard<\/td><td>Standard<\/td><td>\u00c9tendu<\/td><\/tr><tr><td>Gestion de la contamination<\/td><td>Mod\u00e9r\u00e9<\/td><td>Mod\u00e9r\u00e9<\/td><td>Haut<\/td><\/tr><tr><td>Compatibilit\u00e9<\/td><td>La plupart des changeurs d&#039;\u00e9cran<\/td><td>La plupart des changeurs d&#039;\u00e9cran<\/td><td>Changeurs d&#039;\u00e9cran s\u00e9lectionn\u00e9s<\/td><\/tr><tr><td>Co\u00fbt unitaire<\/td><td>Faible \u00e0 moyen<\/td><td>Moyen \u00e0 \u00e9lev\u00e9<\/td><td>Moyen \u00e0 \u00e9lev\u00e9<\/td><\/tr><tr><td>Installation<\/td><td>Facile<\/td><td>Facile \u00e0 moyen<\/td><td>N\u00e9cessite un logement appropri\u00e9<\/td><\/tr><tr><td>Id\u00e9al pour<\/td><td>Extrusion standard<\/td><td>Haute pression, haute viscosit\u00e9<\/td><td>Recyclage, aliments contamin\u00e9s<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-how-to-decide-a-process-based-decision-framework\" class=\"wp-block-heading\">Comment d\u00e9cider : un cadre de d\u00e9cision fond\u00e9 sur un processus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Utilisez ce cadre pour affiner votre s\u00e9lection\u00a0:<\/p>\n\n\n\n<h3 id=\"h-step-1-check-your-operating-pressure\" class=\"wp-block-heading\">\u00c9tape 1 : V\u00e9rifiez votre pression de service<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sous les 200 bars de fa\u00e7on constante<\/strong> \u2192 soud\u00e9 ou pliss\u00e9 sont tous deux envisageables<\/li>\n\n\n\n<li><strong>Au-dessus de 200 bars r\u00e9guli\u00e8rement<\/strong> \u2192 Le sac \u00e0 dos \u00e0 armature est le choix le plus s\u00fbr.<\/li>\n\n\n\n<li><strong>Pics de pression sup\u00e9rieurs \u00e0 300 bars<\/strong> \u2192 Encadr\u00e9 avec un treillis de support robuste, essentiel<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-step-2-assess-your-contamination-load\" class=\"wp-block-heading\">\u00c9tape 2\u00a0: \u00c9valuer votre charge de contamination<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>r\u00e9sine vierge propre<\/strong> \u2192 un paquet soud\u00e9 est suffisant<\/li>\n\n\n\n<li><strong>M\u00e9lange vierge + broy\u00e9<\/strong> \u2192 soud\u00e9 ou encadr\u00e9 selon la pression<\/li>\n\n\n\n<li><strong>Contamination \u00e9lev\u00e9e \/ contenu recycl\u00e9 &gt;30%<\/strong> \u2192 pliss\u00e9 pour une dur\u00e9e de vie prolong\u00e9e<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-step-3-evaluate-your-screen-changer-type\" class=\"wp-block-heading\">\u00c9tape 3\u00a0: \u00c9valuez le type de votre changeur d\u2019\u00e9cran<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>plaque \u00e0 boulon ou coulissante<\/strong> \u2192 soud\u00e9 ou \u00e0 ossature<\/li>\n\n\n\n<li><strong>Courroie continue \/ rin\u00e7age \u00e0 contre-courant<\/strong> \u2192 Consulter le fabricant\u00a0; des \u00e9l\u00e9ments pliss\u00e9s peuvent \u00eatre disponibles.<\/li>\n\n\n\n<li><strong>changement d&#039;\u00e9cran manuel<\/strong> \u2192 tout type ; encadr\u00e9 facilite l&#039;auto-localisation<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-step-4-consider-your-filtration-fineness-target\" class=\"wp-block-heading\">\u00c9tape 4\u00a0: D\u00e9terminez votre objectif de finesse de filtration<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Au-dessus de 150 microns<\/strong> \u2192 une soudure monocouche est souvent suffisante<\/li>\n\n\n\n<li><strong>40 \u00e0 150 microns<\/strong> \u2192 multicouche soud\u00e9 ou \u00e0 ossature (avec treillis de support)<\/li>\n\n\n\n<li><strong>En dessous de 40 microns<\/strong> \u2192 pliss\u00e9 pour un d\u00e9bit durable ; ou encadr\u00e9 d&#039;une maille tiss\u00e9e hollandaise<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-step-5-factor-in-changeover-cost\" class=\"wp-block-heading\">\u00c9tape 5\u00a0: Prendre en compte les co\u00fbts de changement<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Des changements fr\u00e9quents sont acceptables.<\/strong> \u2192 soud\u00e9 est rentable<\/li>\n\n\n\n<li><strong>Les temps d&#039;arr\u00eat co\u00fbtent cher.<\/strong> \u2192 Le pliss\u00e9 allonge les intervalles\u00a0; le cadre r\u00e9duit le risque de fuite lors des changements<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-layer-configuration-within-each-type\" class=\"wp-block-heading\">Configuration des couches au sein de chaque type<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quel que soit le type de construction, la plupart des emballages d&#039;\u00e9cran utilisent un <strong>structure multicouche<\/strong>:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Couche<\/th><th>Nombre de mailles<\/th><th>R\u00f4le<\/th><\/tr><\/thead><tbody><tr><td>Support grossier (en amont)<\/td><td>10\u201330 mailles<\/td><td>Support structurel, pr\u00e9filtre<\/td><\/tr><tr><td>Filtration primaire<\/td><td>60\u2013325 mailles<\/td><td>Capture principale de la contamination<\/td><\/tr><tr><td>Filtration fine (optionnelle)<\/td><td>200\u2013500 mesh<\/td><td>\u00c9limination du gel, capture des particules fines<\/td><\/tr><tr><td>Support en aval<\/td><td>10\u201320 mailles<\/td><td>Emp\u00eache l&#039;\u00e9clatement des m\u00e9dias<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les mod\u00e8les \u00e0 cadre et soud\u00e9s, les configurations standard sont g\u00e9n\u00e9ralement \u00e0 3 ou 4 couches. Les \u00e9l\u00e9ments pliss\u00e9s utilisent souvent un mat\u00e9riau composite pr\u00e9-lamin\u00e9 au lieu de couches s\u00e9par\u00e9es.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-material-considerations\" class=\"wp-block-heading\">Consid\u00e9rations relatives aux mat\u00e9riaux<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les trois types sont disponibles en :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SS 304<\/strong> \u2014 notes standard, les plus courantes<\/li>\n\n\n\n<li><strong>SS 316L<\/strong> \u2014 polym\u00e8res contenant du chlorure ou polym\u00e8res agressifs<\/li>\n\n\n\n<li><strong>SS 316Ti<\/strong> \u2014 stabilit\u00e9 \u00e0 temp\u00e9rature \u00e9lev\u00e9e<\/li>\n\n\n\n<li><strong>Monel \/ Inconel<\/strong> \u2014 fluoropolym\u00e8res (PVDF, PTFE), fondus hautement corrosifs<\/li>\n\n\n\n<li><strong>Bronze phosphoreux<\/strong> \u2014 Traitement du PVC (r\u00e9sistant \u00e0 la corrosion sous contrainte par les chlorures)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Il faut choisir le mat\u00e9riau en fonction de la chimie du polym\u00e8re, et pas seulement de la temp\u00e9rature. Pour plus d&#039;informations, consultez notre prochain article\u00a0: <em>\u00c9crans d&#039;extrusion SS304 vs SS316L\u00a0: quel type d&#039;acier inoxydable choisir\u00a0?<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 id=\"h-summary\" class=\"wp-block-heading\">R\u00e9sum\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Il n&#039;existe pas de conception de pack de tamis universellement \u201c optimale \u201d. Le choix appropri\u00e9 d\u00e9pend de la pression de service, du type de polym\u00e8re, du niveau de contamination et de la conception du changeur de tamis.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Soud\u00e9<\/strong> \u2192 fiable, \u00e9conomique, large compatibilit\u00e9<\/li>\n\n\n\n<li><strong>Encadr\u00e9<\/strong> \u2192 Int\u00e9grit\u00e9 haute pression, \u00e9tanch\u00e9it\u00e9 positive, durabilit\u00e9 \u00e0 long terme<\/li>\n\n\n\n<li><strong>Pliss\u00e9<\/strong> \u2192 Surface de filtration maximale, dur\u00e9e de vie prolong\u00e9e, id\u00e9al pour les r\u00e9sines recycl\u00e9es<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En cas de doute, d\u00e9crivez votre application \u00e0 votre fournisseur de filtres \u00e0 tamis (pression, d\u00e9bit, polym\u00e8re et fr\u00e9quence de changement) et demandez-lui une recommandation technique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PFM SCREEN fabrique les trois types de construction en configurations standard et sur mesure, avec des options de mat\u00e9riaux allant de l&#039;acier inoxydable 304 \u00e0 l&#039;Inconel. <a href=\"https:\/\/pfmscreen.com\/fr\/contact\/\">Contactez notre \u00e9quipe technique<\/a> pour des recommandations sp\u00e9cifiques \u00e0 l&#039;application.<\/p>","protected":false},"excerpt":{"rendered":"<p>Les filtres d&#039;extrusion ne sont pas tous identiques. Ce guide d\u00e9taille les principales diff\u00e9rences entre les filtres soud\u00e9s, encadr\u00e9s et pliss\u00e9s\u00a0: construction, performances, r\u00e9sistance \u00e0 la pression et choix du type le mieux adapt\u00e9 \u00e0 votre proc\u00e9d\u00e9 d&#039;extrusion de polym\u00e8res.<\/p>","protected":false},"author":1,"featured_media":3506,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-4369","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Welded vs. Framed vs. Pleated Extruder Screen Packs | PFM SCREEN<\/title>\n<meta name=\"description\" content=\"Compare welded, framed, and pleated extruder screen packs: construction, pressure 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