{"id":6856,"date":"2022-05-13T09:01:50","date_gmt":"2022-05-13T09:01:50","guid":{"rendered":"https:\/\/www.polyfab3d.fr\/ressources\/?p=6856"},"modified":"2025-11-10T15:37:19","modified_gmt":"2025-11-10T15:37:19","slug":"durete-shore-filament-imprimante-3d","status":"publish","type":"post","link":"https:\/\/www.polyfab3d.fr\/ressources\/durete-shore-filament-imprimante-3d\/","title":{"rendered":"Duret\u00e9 Shore des filaments et mat\u00e9riaux d&rsquo;impression 3D"},"content":{"rendered":"\n<p>La s\u00e9lection des <a href=\"https:\/\/www.polyfab3d.fr\/6-filament-3d\">filaments 3D<\/a> ne se limite pas \u00e0 la couleur, au type de filament ou \u00e0 la taille de buse : la <strong>duret\u00e9 Shore<\/strong> se r\u00e9v\u00e8le comme un param\u00e8tre technique majeur pour garantir que la pi\u00e8ce finale r\u00e9ponde bien \u00e0 sa fonction. Ce facteur est <strong>souvent sous-estim\u00e9<\/strong>, pourtant sa bonne ma\u00eetrise permet d\u2019\u00e9viter des surprises m\u00e9caniques post-impression. Cet article propose une exploration compl\u00e8te de la <strong>duret\u00e9 Shore<\/strong> : de sa d\u00e9finition \u00e0 son usage, en passant par ses implications pour les proc\u00e9d\u00e9s d\u2019impression et le design pi\u00e8ce.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img fetchpriority=\"high\" decoding=\"async\" width=\"830\" height=\"512\" src=\"https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/durete-shore-filament-materiau-imprimante-3d.jpg\" alt=\"Duret\u00e9 Shore filament mat\u00e9riau imprimante 3D\" class=\"wp-image-6861\" srcset=\"https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/durete-shore-filament-materiau-imprimante-3d.jpg 830w, https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/durete-shore-filament-materiau-imprimante-3d-300x185.jpg 300w, https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/durete-shore-filament-materiau-imprimante-3d-768x474.jpg 768w, https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/durete-shore-filament-materiau-imprimante-3d-310x190.jpg 310w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Compr\u00e9hension de la duret\u00e9 Shore<\/h2>\n\n\n\n<p>La duret\u00e9 d\u2019un mat\u00e9riau peut \u00eatre d\u00e9crite comme sa <strong>r\u00e9sistance \u00e0 la p\u00e9n\u00e9tration d\u2019un objet<\/strong> standardis\u00e9. Plus le mat\u00e9riau est dur, moins l\u2019indentation est profonde pour une force donn\u00e9e. La mesure selon <strong>l\u2019\u00e9chelle de duret\u00e9 Shore<\/strong> a \u00e9t\u00e9 d\u00e9velopp\u00e9e pour les \u00e9lastom\u00e8res et certains plastiques et permet de r\u00e9aliser cette caract\u00e9risation hors-laboratoire, notamment \u00e0 l\u2019aide d\u2019un <strong>durom\u00e8tre portable<\/strong>.<\/p>\n\n\n\n<p>Le principe est simple mais rigoureux : un p\u00e9n\u00e9trateur est pouss\u00e9e sous ressort sur la surface de l\u2019\u00e9chantillon pendant un temps d\u00e9fini, la profondeur d\u2019indentation est convertie en une valeur sur <strong>l\u2019\u00e9chelle de 0 \u00e0 100<\/strong>. Une valeur \u00e9lev\u00e9e correspond \u00e0 un mat\u00e9riau plus dur, une valeur faible \u00e0 un mat\u00e9riau plus souple.<\/p>\n\n\n\n<p>Il faut noter que sa mise en \u0153uvre repose sur des conditions strictes (\u00e9paisseur minimale de l\u2019\u00e9chantillon, temp\u00e9rature, dur\u00e9e de mesure) d\u00e9finies notamment par les normes ISO 48\u20114:2018 ou ASTM D2240.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les \u00e9chelles Shore : A, D (et les autres)<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"892\" height=\"303\" src=\"https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/tableau-durete-shore-imprimante-3d.jpg\" alt=\"tableau duret\u00e9 shore imprimante 3d\" class=\"wp-image-6863\" srcset=\"https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/tableau-durete-shore-imprimante-3d.jpg 892w, https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/tableau-durete-shore-imprimante-3d-300x102.jpg 300w, https:\/\/www.polyfab3d.fr\/ressources\/wp-content\/uploads\/2022\/05\/tableau-durete-shore-imprimante-3d-768x261.jpg 768w\" sizes=\"(max-width: 892px) 100vw, 892px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c9chelle Shore A<\/h3>\n\n\n\n<p><strong>L\u2019\u00e9chelle Shore A<\/strong> est principalement utilis\u00e9e pour les mat\u00e9riaux souples : <strong>\u00e9lastom\u00e8res<\/strong>, <strong>silicones<\/strong>, thermoplastiques <strong>flexibles <\/strong>(TPE, TPU). Elle couvre une plage typique de 0 \u00e0 100, o\u00f9 0 correspond \u00e0 un mat\u00e9riau tr\u00e8s mou\/g\u00e9lifi\u00e9 et 100 \u00e0 un mat\u00e9riau presque rigide, mais encore dans la cat\u00e9gorie \u201csouple\u201d.<\/p>\n\n\n\n<p><strong>Exemple concret<\/strong> : un <a href=\"https:\/\/www.polyfab3d.fr\/79-filament-tpu-tpe-tpc\">filament TPU d\u2019impression 3D<\/a> peut \u00eatre annonc\u00e9 95 Shore A, ce qui situe sa rigidit\u00e9 vers le haut de l\u2019\u00e9chelle A ; en revanche un mat\u00e9riau plus souple pourrait \u00eatre annonc\u00e9 60-70 Shore A.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c9chelle Shore D<\/h3>\n\n\n\n<p><strong>L\u2019\u00e9chelle Shore D<\/strong> s\u2019applique aux mat\u00e9riaux plus durs : <strong>thermoplastiques rigides<\/strong>, <strong>\u00e9lastom\u00e8res durs<\/strong>, plastiques renforc\u00e9s. Elle utilise un p\u00e9n\u00e9trateur plus aigu et une force plus importante pour mesurer la duret\u00e9.<\/p>\n\n\n\n<p><strong>Par exemple<\/strong> : des mat\u00e9riaux comme l\u2019ABS ou le PC sont donn\u00e9s dans des plages typiques 70-85 Shore D.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Autres \u00e9chelles<\/h3>\n\n\n\n<p>Outre A et D, d\u2019autres \u00e9chelles existent : <strong>Shore 00<\/strong> pour des mat\u00e9riaux extr\u00eamement mous (gels, mousses), Shore B, C pour des mat\u00e9riaux interm\u00e9diaires.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Normes associ\u00e9es<\/h3>\n\n\n\n<p>La norme <strong>ISO 48-4-2018<\/strong> d\u00e9finit la m\u00e9thode d\u2019essai pour le caoutchouc et mat\u00e9riaux similaires.<br>L\u2019<strong>ASTM D2240<\/strong> d\u00e9crit l\u2019essai pour une gamme plus large de mat\u00e9riaux non-m\u00e9talliques. <br>Respecter ces normes garantit des mesures reproductibles et comparables.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Application \u00e0 l\u2019impression 3D<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi la duret\u00e9 Shore importe pour l\u2019impression 3D<\/h3>\n\n\n\n<p>Lorsque l\u2019on imprime en 3D, le mat\u00e9riau n\u2019est pas seulement choisi pour son apparence ou sa facilit\u00e9 d\u2019impression : sa <strong>finalit\u00e9 fonctionnelle<\/strong> impose des contraintes m\u00e9caniques (flexion, choc, usure, compression). La <strong>valeur de duret\u00e9 Shore<\/strong> permet donc d\u2019anticiper le comportement de la pi\u00e8ce.<\/p>\n\n\n\n<p>Par exemple :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Un <strong>TPU flexible de 85-95 Shore A<\/strong> permet de concevoir des pi\u00e8ces amortissantes, des objets pliables ou des \u00e9l\u00e9ments qui doivent absorber les vibrations.<\/li>\n\n\n\n<li>Un filament rigide (plastique dur) de <strong>70-85 Shore D<\/strong> s\u2019impose pour des bo\u00eetiers, des fixations, des \u00e9l\u00e9ments structurels.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Choix de mat\u00e9riau en impression selon la duret\u00e9<\/h3>\n\n\n\n<p>Voici une approche pour guider le choix :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D\u00e9finir la fonction de la pi\u00e8ce<\/strong> : doit-elle \u00eatre souple (absorption, joint) ou rigide (support, structure) ?<\/li>\n\n\n\n<li>V\u00e9rifier la <strong>valeur de duret\u00e9 Shore<\/strong> annonc\u00e9e par le fabricant ; s\u2019assurer qu\u2019elle correspond \u00e0 l\u2019\u00e9chelle (A ou D) et \u00e0 la fonction.<\/li>\n\n\n\n<li>Int\u00e9grer dans la conception l\u2019influence de l\u2019impression : g\u00e9om\u00e9trie, <strong>infill<\/strong>, <strong>orientation<\/strong>, couche, post-traitement peuvent d\u00e9tourner la valeur de duret\u00e9 effective.<\/li>\n\n\n\n<li>Pour des mat\u00e9riaux souples, anticiper les contraintes d\u2019impression (extrusion souple, risques d\u2019enchev\u00eatrement, adh\u00e9rence). Par exemple, imprimer un <strong>filament tr\u00e8s bas Shore (ex : 60A)<\/strong> demande souvent extrudeuse directe et r\u00e9glages sp\u00e9cifiques.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cas pratiques<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Semelle de chaussure : un <strong>TPU entre 70-80 Shore A<\/strong> sera \u00e0 privil\u00e9gier pour un bon compromis confort\/durabilit\u00e9.<\/li>\n\n\n\n<li>Produit amortisseur ou support anti-vibration : viser <strong>60-70 Shore A<\/strong> ou moins selon la d\u00e9formation attendue.<\/li>\n\n\n\n<li>Bo\u00eetier ou car\u00e9nage fonctionnel : viser <strong>70-85 Shore D<\/strong> ou plus, selon le plastiques utilis\u00e9.<\/li>\n\n\n\n<li>Hybridation multi-mat\u00e9riaux : une jonction entre un composant souple (ex : 65 Shore A) et un composant rigide (ex : 75 Shore D) doit \u00eatre con\u00e7ue pour g\u00e9rer la diff\u00e9rence de rigidit\u00e9.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading has-text-align-center\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-flexible\/3125-ecotpu-95a-noir-forshape-175mm-1-kg.html\">ecoTPU 95A Noir Forshape<\/a><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-flexible\/3125-ecotpu-95a-noir-forshape-175mm-1-kg.html\"><img decoding=\"async\" src=\"https:\/\/www.polyfab3d.fr\/7872-large_default\/ecotpu-95a-noir-forshape-175mm-1-kg.jpg\" alt=\"\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading has-text-align-center\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-tpu-tpe-tpc\/144-polyflex-tpu-90a-noir-175mm-750g.html\">Polyflex TPU-90A Noir<\/a><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-tpu-tpe-tpc\/144-polyflex-tpu-90a-noir-175mm-750g.html\"><img decoding=\"async\" src=\"https:\/\/www.polyfab3d.fr\/8228-large_default\/polyflex-tpu-90a-noir-175mm-750g.jpg\" alt=\"\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading has-text-align-center\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-tpu-tpe-tpc\/3455-nanovia-tpu-70d-noir-175-mm-500g.html\">Nanovia TPU 70D Noir<\/a><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.polyfab3d.fr\/filament-tpu-tpe-tpc\/3455-nanovia-tpu-70d-noir-175-mm-500g.html\"><img decoding=\"async\" src=\"https:\/\/www.polyfab3d.fr\/9204-large_default\/nanovia-tpu-70d-noir-175-mm-500g.jpg\" alt=\"\"\/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9cueils &amp; pi\u00e8ges fr\u00e9quents<\/h2>\n\n\n\n<p>Quelques erreurs \u00e0 \u00e9viter :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mesurer un mat\u00e9riau rigide avec l\u2019\u00e9chelle A (et non D)<\/strong> : la valeur sera hors-plage ou peu significative.<\/li>\n\n\n\n<li><strong>N\u00e9gliger l\u2019effet de l\u2019impression 3D<\/strong> : orientation des couches, infill, refroidissement peuvent modifier la duret\u00e9 effective.<\/li>\n\n\n\n<li><strong>Ignorer le post-traitement<\/strong> : certains traitements peuvent durcir ou ramollir le mat\u00e9riau.<\/li>\n\n\n\n<li><strong>Utiliser une surface non plane, ou une \u00e9paisseur insuffisante<\/strong> : la mesure sera fauss\u00e9e.<\/li>\n\n\n\n<li><strong>Omettre la temp\u00e9rature de test<\/strong> : les mat\u00e9riaux souples sont sensibles \u00e0 la temp\u00e9rature ambiante.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Impact sur le design des pi\u00e8ces imprim\u00e9es<\/h2>\n\n\n\n<p>La duret\u00e9 Shore affecte directement le comportement m\u00e9canique de la pi\u00e8ce :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une duret\u00e9 faible (souplesse) permet l\u2019amortissement, la flexion, l\u2019adh\u00e9rence au support.<\/li>\n\n\n\n<li>Une duret\u00e9 \u00e9lev\u00e9e (rigidit\u00e9) assure la tenue structurelle, l\u2019int\u00e9grit\u00e9 dimensionnelle, la r\u00e9sistance aux contraintes.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Implications pour l\u2019imprimante et la conception<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pour des mat\u00e9riaux de <strong>faible Shore (ex : &lt;80 Shore A)<\/strong>, privil\u00e9gier une extrudeuse directe, des vitesses mod\u00e9r\u00e9es, bonne adh\u00e9sion. Sinon risque d\u2019\u00e9chec ou de variation de propri\u00e9t\u00e9.<\/li>\n\n\n\n<li>Pour des mat\u00e9riaux rigides, veiller \u00e0 la stabilit\u00e9 de la pi\u00e8ce (warping, adh\u00e9sion) pour conserver la duret\u00e9 annonc\u00e9e.<\/li>\n\n\n\n<li>Le motif d\u2019infill, l\u2019\u00e9paisseur de paroi, la hauteur de couche peuvent \u00eatre ajust\u00e9s pour modifier \u00ab l\u2019effet duret\u00e9 \u00bb : un remplissage plus dense augmente la rigidit\u00e9 ressentie. Exemple : un <strong>filament TPU annonc\u00e9 95 Shore A imprim\u00e9 avec 20 % d\u2019infill<\/strong> aura une sensation m\u00e9canique diff\u00e9rente qu\u2019avec <strong>100 % d\u2019infill<\/strong>.<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Synth\u00e8se &amp; recommandations pratiques<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La <strong>duret\u00e9 Shore<\/strong> est une mesure de la r\u00e9sistance \u00e0 l\u2019indentation, applicable \u00e0 de nombreux polym\u00e8res et \u00e9lastom\u00e8res.<\/li>\n\n\n\n<li>Choix de l\u2019\u00e9chelle : Shore A pour mat\u00e9riaux souples, Shore D pour mat\u00e9riaux rigides.<\/li>\n\n\n\n<li>La mesure correcte est conditionn\u00e9e par des normes (ISO 48-4, ASTM D2240), un mat\u00e9riel ad\u00e9quat et un protocole stable.<\/li>\n\n\n\n<li>En impression cette valeur doit \u00eatre un crit\u00e8re de choix du mat\u00e9riau plus que facultatif.<\/li>\n\n\n\n<li>Le design, le proc\u00e9d\u00e9 d\u2019impression, le post-traitement influencent la duret\u00e9 effective.<\/li>\n<\/ul>\n\n\n\n<p><strong>Checklist pour l\u2019utilisateur<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>D\u00e9finir clairement l\u2019usage de la pi\u00e8ce (souple ou rigide).<\/li>\n\n\n\n<li>V\u00e9rifier la valeur de duret\u00e9 Shore annonc\u00e9e et son \u00e9chelle (A ou D).<\/li>\n\n\n\n<li>Imprimer un \u00e9chantillon avec les m\u00eames r\u00e9glages que la pi\u00e8ce finale.<\/li>\n\n\n\n<li>Si possible, mesurer la duret\u00e9 post-impression (ou avoir une fiche technique fabricant fiable).<\/li>\n\n\n\n<li>Adapter g\u00e9om\u00e9trie, infill, parois selon la rigueur m\u00e9canique souhait\u00e9e.<\/li>\n\n\n\n<li>Documenter la valeur mesur\u00e9e et conserver une trace pour r\u00e9-utilisation.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>La<strong> duret\u00e9 Shore<\/strong> est plus qu\u2019un simple chiffre sur une fiche technique : c\u2019est un <strong>pilier de la performance m\u00e9canique dans l\u2019impression 3D<\/strong>. Du choix du filament \u00e0 la conception, en passant par l\u2019impression, la mesure et le post-traitement, elle intervient \u00e0 chaque \u00e9tape. En tant que concepteur ou utilisateur d\u2019imprimante, <strong>int\u00e9grer d\u00e8s maintenant cette donn\u00e9e dans votre workflow<\/strong> vous permettra de passer d\u2019un niveau \u00ab prototype exp\u00e9rimental \u00bb \u00e0 un niveau \u00ab pi\u00e8ce fiable et fonctionnelle \u00bb. Testez, mesurez, comparez : et ajustez vos param\u00e8tres pour <strong>ma\u00eetriser pleinement la duret\u00e9 Shore<\/strong> de vos cr\u00e9ations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La Duret\u00e9 Shore des filaments pour imprimante 3D est un terme technique qui d\u00e9finit la duret\u00e9 du mat\u00e9riau. Comment bien le choisir ?<\/p>\n","protected":false},"author":4,"featured_media":6861,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,9],"tags":[57],"class_list":["post-6856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","category-tutoriels","tag-newtheme"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Duret\u00e9 Shore des filaments et mat\u00e9riaux d&#039;impression 3D<\/title>\n<meta name=\"description\" content=\"La Duret\u00e9 Shore des filaments pour imprimante 3D est un terme technique qui d\u00e9finit la duret\u00e9 du mat\u00e9riau. 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