{"id":4374,"date":"2026-01-26T10:55:08","date_gmt":"2026-01-26T02:55:08","guid":{"rendered":"https:\/\/rfid-pro.com\/?p=4374"},"modified":"2026-01-30T16:54:14","modified_gmt":"2026-01-30T08:54:14","slug":"what-materials-can-block-rfid-signals","status":"publish","type":"post","link":"https:\/\/rfid-pro.com\/fr\/what-materials-can-block-rfid-signals\/","title":{"rendered":"Quels mat\u00e9riaux peuvent bloquer les signaux RFID ?"},"content":{"rendered":"<p data-start=\"376\" data-end=\"621\">La technologie RFID est largement utilis\u00e9e dans le contr\u00f4le d'acc\u00e8s, le suivi des actifs, la logistique, la vente au d\u00e9tail et l'automatisation industrielle. Cependant, l'un des d\u00e9fis les plus courants dans les d\u00e9ploiements r\u00e9els est le suivant <strong data-start=\"560\" data-end=\"620\">Interf\u00e9rence du signal RFID caus\u00e9e par les mat\u00e9riaux environnants<\/strong>.<\/p>\n<p data-start=\"623\" data-end=\"831\">Comprendre <strong data-start=\"637\" data-end=\"686\">les mat\u00e9riaux qui bloquent ou d\u00e9gradent les signaux RFID<\/strong>-et pourquoi, peut vous aider \u00e0 concevoir des syst\u00e8mes RFID plus fiables, \u00e0 \u00e9viter des \u00e9checs de d\u00e9ploiement co\u00fbteux et \u00e0 s\u00e9lectionner les \u00e9tiquettes, les lecteurs et les fr\u00e9quences appropri\u00e9s.<\/p>\n<p data-start=\"833\" data-end=\"998\">Ce guide explique <strong data-start=\"853\" data-end=\"892\">quels sont les mat\u00e9riaux qui interf\u00e8rent avec la RFID<\/strong>, Quelle est la diff\u00e9rence entre les deux ? <strong data-start=\"908\" data-end=\"935\">Les fr\u00e9quences RFID se comportent<\/strong>, et ce que <strong data-start=\"946\" data-end=\"971\">solutions d'ing\u00e9nierie<\/strong> peut att\u00e9nuer ces probl\u00e8mes.<\/p>\n<h2 data-start=\"1005\" data-end=\"1048\">Comment les signaux RFID interagissent avec les mat\u00e9riaux<\/h2>\n<p data-start=\"1050\" data-end=\"1200\">Les syst\u00e8mes RFID reposent sur <strong data-start=\"1071\" data-end=\"1096\">ondes \u00e9lectromagn\u00e9tiques<\/strong> pour transmettre des donn\u00e9es entre un lecteur et une \u00e9tiquette. Lorsque ces ondes rencontrent certains mat\u00e9riaux, elles peuvent \u00eatre :<\/p>\n<ul>\n<li data-start=\"1204\" data-end=\"1214\">Absorb\u00e9<\/li>\n<li data-start=\"1217\" data-end=\"1228\">R\u00e9fl\u00e9chi<\/li>\n<li data-start=\"1231\" data-end=\"1240\">d\u00e9saccord\u00e9<\/li>\n<li data-start=\"1243\" data-end=\"1262\">Enti\u00e8rement blind\u00e9<\/li>\n<\/ul>\n<p data-start=\"1264\" data-end=\"1304\">La gravit\u00e9 de l'interf\u00e9rence d\u00e9pend<\/p>\n<ul>\n<li data-start=\"1307\" data-end=\"1335\">Fr\u00e9quence RFID (LF, HF, UHF)<\/li>\n<li data-start=\"1338\" data-end=\"1356\">Conception de l'antenne du tag<\/li>\n<li data-start=\"1359\" data-end=\"1383\">Distance et orientation<\/li>\n<li data-start=\"1386\" data-end=\"1421\">\u00c9paisseur et conductivit\u00e9 du mat\u00e9riau<\/li>\n<\/ul>\n<h2 data-start=\"1428\" data-end=\"1482\">Mat\u00e9riaux qui bloquent ou interf\u00e8rent avec les signaux RFID<\/h2>\n<h3 data-start=\"1484\" data-end=\"1525\">1. M\u00e9tal (le bloqueur RFID le plus puissant)<\/h3>\n<p data-start=\"1527\" data-end=\"1587\"><strong data-start=\"1527\" data-end=\"1587\">Le m\u00e9tal est le mat\u00e9riau le plus probl\u00e9matique pour les syst\u00e8mes RFID.<\/strong><\/p>\n<p data-start=\"1589\" data-end=\"1615\"><strong data-start=\"1589\" data-end=\"1615\">Pourquoi le m\u00e9tal bloque la RFID :<\/strong><\/p>\n<ul>\n<li data-start=\"1618\" data-end=\"1648\">R\u00e9fl\u00e9chit les ondes \u00e9lectromagn\u00e9tiques<\/li>\n<li data-start=\"1651\" data-end=\"1671\">D\u00e9synchronisation des antennes de marquage<\/li>\n<li data-start=\"1674\" data-end=\"1707\">Cr\u00e9ation de zones d'annulation du signal<\/li>\n<\/ul>\n<p data-start=\"1709\" data-end=\"1733\"><strong data-start=\"1709\" data-end=\"1733\">Impact par fr\u00e9quence :<\/strong><\/p>\n<ul>\n<li data-start=\"1736\" data-end=\"1775\">BF (125-134 kHz) : interf\u00e9rence mod\u00e9r\u00e9e<\/li>\n<li data-start=\"1778\" data-end=\"1825\">HF (13,56 MHz) : D\u00e9saccord important \u00e0 proximit\u00e9 du m\u00e9tal<\/li>\n<li data-start=\"1828\" data-end=\"1886\">UHF (860-960 MHz) : R\u00e9flexion importante du signal et zones nulles<\/li>\n<\/ul>\n<p data-start=\"1888\" data-end=\"1928\"><strong data-start=\"1888\" data-end=\"1928\">Sc\u00e9narios courants d'interf\u00e9rences m\u00e9talliques :<\/strong><\/p>\n<ul>\n<li data-start=\"1931\" data-end=\"1963\">Tags mont\u00e9s sur des conteneurs en acier<\/li>\n<li data-start=\"1966\" data-end=\"1999\">\u00c9tiquettes RFID sur les emballages en aluminium<\/li>\n<li data-start=\"2002\" data-end=\"2042\">\u00c9quipements industriels avec surfaces m\u00e9talliques<\/li>\n<\/ul>\n<p data-start=\"2044\" data-end=\"2069\"><strong data-start=\"2044\" data-end=\"2069\">Solutions d'att\u00e9nuation :<\/strong><\/p>\n<ul>\n<li data-start=\"2072\" data-end=\"2098\">Utilisation <a href=\"https:\/\/rfid-pro.com\/fr\/product\/uhf-anti-metal-tags\/\"><strong data-start=\"2076\" data-end=\"2098\">\u00e9tiquettes RFID sur m\u00e9tal<\/strong><\/a><\/li>\n<li data-start=\"2101\" data-end=\"2133\">Ajouter <strong data-start=\"2105\" data-end=\"2133\">couches de blindage en ferrite<\/strong><\/li>\n<li data-start=\"2136\" data-end=\"2183\">Maintenir des espaces d'air entre l'\u00e9tiquette et la surface m\u00e9tallique<\/li>\n<\/ul>\n<h3 data-start=\"2190\" data-end=\"2214\">2. L'eau et les liquides<\/h3>\n<p data-start=\"2216\" data-end=\"2274\">L'eau absorbe l'\u00e9nergie des radiofr\u00e9quences, en particulier aux fr\u00e9quences \u00e9lev\u00e9es.<\/p>\n<p data-start=\"2276\" data-end=\"2313\"><strong data-start=\"2276\" data-end=\"2313\">Exemples de mat\u00e9riaux riches en eau :<\/strong><\/p>\n<ul>\n<li data-start=\"2316\" data-end=\"2326\">Corps humain<\/li>\n<li data-start=\"2329\" data-end=\"2338\">Boissons<\/li>\n<li data-start=\"2341\" data-end=\"2357\">Liquides chimiques<\/li>\n<li data-start=\"2360\" data-end=\"2384\">Aliments frais (viande, fruits)<\/li>\n<\/ul>\n<p data-start=\"2386\" data-end=\"2407\"><strong data-start=\"2386\" data-end=\"2407\">Impact de la fr\u00e9quence :<\/strong><\/p>\n<ul>\n<li data-start=\"2410\" data-end=\"2428\">LF : Impact minimal<\/li>\n<li data-start=\"2431\" data-end=\"2454\">HF : Absorption mod\u00e9r\u00e9e<\/li>\n<li data-start=\"2457\" data-end=\"2501\">UHF : perte de signal \u00e9lev\u00e9e et port\u00e9e de lecture r\u00e9duite<\/li>\n<\/ul>\n<p data-start=\"2503\" data-end=\"2528\"><strong data-start=\"2503\" data-end=\"2528\">Domaines probl\u00e9matiques courants :<\/strong><\/p>\n<ul>\n<li data-start=\"2531\" data-end=\"2559\">Bracelets RFID port\u00e9s \u00e0 m\u00eame la peau<\/li>\n<li data-start=\"2562\" data-end=\"2594\">Bouteilles de boissons avec \u00e9tiquettes UHF<\/li>\n<li data-start=\"2597\" data-end=\"2615\">Suivi du b\u00e9tail<\/li>\n<\/ul>\n<p data-start=\"2617\" data-end=\"2642\"><strong data-start=\"2617\" data-end=\"2642\">Solutions d'att\u00e9nuation :<\/strong><\/p>\n<ul>\n<li data-start=\"2645\" data-end=\"2675\">Utilisation <strong data-start=\"2649\" data-end=\"2675\">RFID HF pour les bracelets<\/strong><\/li>\n<li data-start=\"2678\" data-end=\"2714\">Sp\u00e9cialis\u00e9 <a href=\"https:\/\/rfid-pro.com\/fr\/product\/uhf-fabric-laundry-tags\/\"><strong data-start=\"2690\" data-end=\"2714\">Etiquettes UHF pour liquides<\/strong><\/a><\/li>\n<li data-start=\"2717\" data-end=\"2760\">Optimiser la polarisation et l'emplacement de l'antenne<\/li>\n<\/ul>\n<h3 data-start=\"2767\" data-end=\"2796\">3. Mat\u00e9riaux \u00e0 base de carbone<\/h3>\n<p data-start=\"2798\" data-end=\"2848\">Les mat\u00e9riaux contenant du carbone peuvent absorber les signaux RF.<\/p>\n<p data-start=\"2850\" data-end=\"2867\">Voici quelques exemples :<\/p>\n<ul>\n<li data-start=\"2870\" data-end=\"2882\">Fibre de carbone<\/li>\n<li data-start=\"2885\" data-end=\"2893\">Graphite<\/li>\n<li data-start=\"2896\" data-end=\"2924\">Caoutchouc avec additifs de carbone<\/li>\n<li data-start=\"2927\" data-end=\"2953\">Plastique antistatique noir<\/li>\n<\/ul>\n<p data-start=\"2955\" data-end=\"3039\">Ces mat\u00e9riaux sont souvent \u00e0 l'origine de <strong data-start=\"2983\" data-end=\"3011\">\u00e9checs de lecture inattendus<\/strong> dans les environnements industriels.<\/p>\n<p data-start=\"3041\" data-end=\"3056\"><strong data-start=\"3041\" data-end=\"3056\">Att\u00e9nuation :<\/strong><\/p>\n<ul>\n<li data-start=\"3059\" data-end=\"3095\">Essais sur le terrain avant un d\u00e9ploiement massif<\/li>\n<li data-start=\"3098\" data-end=\"3122\">Utiliser des antennes \u00e0 gain plus \u00e9lev\u00e9<\/li>\n<li data-start=\"3125\" data-end=\"3147\">Ajuster l'orientation de la balise<\/li>\n<\/ul>\n<h3 data-start=\"3154\" data-end=\"3200\">4. B\u00e9ton et pierre (avec armature)<\/h3>\n<p data-start=\"3202\" data-end=\"3297\">Le b\u00e9ton lui-m\u00eame est mod\u00e9r\u00e9ment transparent aux radiofr\u00e9quences. <strong data-start=\"3252\" data-end=\"3275\">b\u00e9ton arm\u00e9<\/strong> contient des barres d'armature m\u00e9talliques.<\/p>\n<p data-start=\"3299\" data-end=\"3310\"><strong data-start=\"3299\" data-end=\"3310\">Impact :<\/strong><\/p>\n<ul>\n<li data-start=\"3313\" data-end=\"3331\">Att\u00e9nuation du signal<\/li>\n<li data-start=\"3334\" data-end=\"3359\">Zones d'ombre derri\u00e8re les murs<\/li>\n<li data-start=\"3362\" data-end=\"3386\">R\u00e9duction de la fiabilit\u00e9 de lecture<\/li>\n<\/ul>\n<p data-start=\"3388\" data-end=\"3406\">Cette situation est fr\u00e9quente dans :<\/p>\n<ul>\n<li data-start=\"3409\" data-end=\"3424\">Garages de stationnement<\/li>\n<li data-start=\"3427\" data-end=\"3437\">Entrep\u00f4ts<\/li>\n<li data-start=\"3440\" data-end=\"3447\">Tunnels<\/li>\n<\/ul>\n<p data-start=\"3449\" data-end=\"3464\"><strong data-start=\"3449\" data-end=\"3464\">Att\u00e9nuation :<\/strong><\/p>\n<ul>\n<li data-start=\"3467\" data-end=\"3490\">Utiliser une puissance de lecture plus \u00e9lev\u00e9e<\/li>\n<li data-start=\"3493\" data-end=\"3520\">Placement strat\u00e9gique de l'antenne<\/li>\n<li data-start=\"3523\" data-end=\"3551\">Antennes ou portails externes<\/li>\n<\/ul>\n<h3 data-start=\"3558\" data-end=\"3600\">5. Corps humain et mat\u00e9riel biologique<\/h3>\n<p data-start=\"3602\" data-end=\"3693\">Le corps humain est compos\u00e9 d'environ <strong data-start=\"3634\" data-end=\"3650\">60-70% eau<\/strong>, ce qui en fait un excellent absorbeur d'\u00e9nergie RF.<\/p>\n<p data-start=\"3695\" data-end=\"3721\"><strong data-start=\"3695\" data-end=\"3721\">Applications concern\u00e9es :<\/strong><\/p>\n<ul>\n<li data-start=\"3724\" data-end=\"3739\">Bracelets RFID<\/li>\n<li data-start=\"3742\" data-end=\"3763\">Dispositifs RFID portables<\/li>\n<li data-start=\"3766\" data-end=\"3787\">Badges de contr\u00f4le d'acc\u00e8s<\/li>\n<\/ul>\n<p data-start=\"3789\" data-end=\"3808\"><strong data-start=\"3789\" data-end=\"3808\">Meilleures pratiques :<\/strong><\/p>\n<ul>\n<li data-start=\"3811\" data-end=\"3855\">Pr\u00e9f\u00e9rer <strong data-start=\"3818\" data-end=\"3841\"><a href=\"https:\/\/rfid-pro.com\/fr\/rfid-chip-frequencies-explained-lf-vs-hf-vs-uhf\/\">RFID HF<\/a> (13,56 MHz)<\/strong> pour les produits portables<\/li>\n<li data-start=\"3858\" data-end=\"3927\">\u00c9viter les UHF pour les applications proches du corps, sauf si elles sont sp\u00e9cifiquement con\u00e7ues.<\/li>\n<\/ul>\n<h2 data-start=\"3934\" data-end=\"3977\">Mat\u00e9riaux pr\u00e9sentant un minimum d'interf\u00e9rences RFID<\/h2>\n<p data-start=\"3979\" data-end=\"4065\">Les mat\u00e9riaux suivants permettent g\u00e9n\u00e9ralement le passage des signaux RFID avec une att\u00e9nuation minimale :<\/p>\n<ul>\n<li data-start=\"4069\" data-end=\"4088\">Papier et carton<\/li>\n<li data-start=\"4091\" data-end=\"4111\">Plastique (sans carbone)<\/li>\n<li data-start=\"4114\" data-end=\"4119\">Verre<\/li>\n<li data-start=\"4122\" data-end=\"4126\">Bois<\/li>\n<li data-start=\"4129\" data-end=\"4133\">Mousse<\/li>\n<li data-start=\"4136\" data-end=\"4157\">Tissu (non m\u00e9tallique)<\/li>\n<\/ul>\n<p data-start=\"4159\" data-end=\"4237\">Ces mat\u00e9riaux sont couramment utilis\u00e9s pour <strong data-start=\"4197\" data-end=\"4236\">\u00c9tiquettes, tickets et emballages RFID<\/strong>.<\/p>\n<h2 data-start=\"1411\" data-end=\"1451\">Le papier aluminium peut-il bloquer les signaux RFID ?<\/h2>\n<p data-start=\"1453\" data-end=\"1573\"><strong data-start=\"1453\" data-end=\"1510\">Oui. Le papier aluminium peut bloquer efficacement les signaux RFID.<\/strong>, en particulier <strong data-start=\"1523\" data-end=\"1541\">HF (13,56 MHz)<\/strong> et <strong data-start=\"1546\" data-end=\"1567\">UHF (860-960 MHz)<\/strong> RFID.<\/p>\n<h3 data-start=\"1575\" data-end=\"1608\">Pourquoi le papier d'aluminium bloque-t-il la RFID ?<\/h3>\n<p data-start=\"1610\" data-end=\"1666\">L'aluminium est un <strong data-start=\"1624\" data-end=\"1651\">m\u00e9tal hautement conducteur<\/strong>, qui provoque :<\/p>\n<ul>\n<li data-start=\"1669\" data-end=\"1691\">R\u00e9flexion des ondes RF<\/li>\n<li data-start=\"1694\" data-end=\"1727\">Cr\u00e9ation d'un effet de cage de Faraday<\/li>\n<li data-start=\"1730\" data-end=\"1774\">D\u00e9syntonisation importante de l'antenne pour les \u00e9tiquettes RFID situ\u00e9es \u00e0 proximit\u00e9<\/li>\n<\/ul>\n<p data-start=\"1776\" data-end=\"1818\">M\u00eame <strong data-start=\"1781\" data-end=\"1813\">papier d'aluminium m\u00e9nager fin<\/strong> peut :<\/p>\n<ul>\n<li data-start=\"1821\" data-end=\"1854\">Emp\u00eacher la lecture des \u00e9tiquettes RFID<\/li>\n<li data-start=\"1857\" data-end=\"1901\">R\u00e9duire la plage de lecture \u00e0 z\u00e9ro en cas d'emballage complet<\/li>\n<li data-start=\"1904\" data-end=\"1951\">Entra\u00eene des incoh\u00e9rences de lecture en cas de couverture partielle<\/li>\n<\/ul>\n<h2 data-start=\"4244\" data-end=\"4285\">Fr\u00e9quence RFID et sensibilit\u00e9 des mat\u00e9riaux<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"4287\" data-end=\"4595\">\n<thead data-start=\"4287\" data-end=\"4351\">\n<tr data-start=\"4287\" data-end=\"4351\">\n<th data-start=\"4287\" data-end=\"4304\" data-col-size=\"sm\">Fr\u00e9quence RFID<\/th>\n<th data-start=\"4304\" data-end=\"4327\" data-col-size=\"sm\">Sensibilit\u00e9 des mat\u00e9riaux<\/th>\n<th data-start=\"4327\" data-end=\"4351\" data-col-size=\"sm\">Applications typiques<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"4415\" data-end=\"4595\">\n<tr data-start=\"4415\" data-end=\"4470\">\n<td data-start=\"4415\" data-end=\"4430\" data-col-size=\"sm\">BF (125 kHz)<\/td>\n<td data-start=\"4430\" data-end=\"4441\" data-col-size=\"sm\">Tr\u00e8s faible<\/td>\n<td data-start=\"4441\" data-end=\"4470\" data-col-size=\"sm\">Identification des animaux, contr\u00f4le d'acc\u00e8s<\/td>\n<\/tr>\n<tr data-start=\"4471\" data-end=\"4529\">\n<td data-start=\"4471\" data-end=\"4488\" data-col-size=\"sm\">HF (13,56 MHz)<\/td>\n<td data-start=\"4488\" data-end=\"4497\" data-col-size=\"sm\">Moyen<\/td>\n<td data-start=\"4497\" data-end=\"4529\" data-col-size=\"sm\">NFC, bracelets, cartes \u00e0 puce<\/td>\n<\/tr>\n<tr data-start=\"4530\" data-end=\"4595\">\n<td data-start=\"4530\" data-end=\"4550\" data-col-size=\"sm\">UHF (860-960 MHz)<\/td>\n<td data-start=\"4550\" data-end=\"4557\" data-col-size=\"sm\">\u00c9lev\u00e9<\/td>\n<td data-start=\"4557\" data-end=\"4595\" data-col-size=\"sm\">Logistique, inventaire, cha\u00eene d'approvisionnement<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"4597\" data-end=\"4673\">Le choix de la bonne fr\u00e9quence est essentiel lorsque les mat\u00e9riaux ne peuvent pas \u00eatre chang\u00e9s.<\/p>\n<h2 data-start=\"4680\" data-end=\"4730\">Solutions d'ing\u00e9nierie pour surmonter le blocage de la RFID<\/h2>\n<p data-start=\"4732\" data-end=\"4783\">Les d\u00e9ploiements professionnels de RFID utilisent une combinaison de :<\/p>\n<ul>\n<li data-start=\"4787\" data-end=\"4819\">\u00c9tiquettes RFID sur m\u00e9tal ou anti-m\u00e9tal<\/li>\n<li data-start=\"4822\" data-end=\"4839\">Blindage ferrite<\/li>\n<li data-start=\"4842\" data-end=\"4866\">Espaces d'\u00e9tiquetage et entrefers<\/li>\n<li data-start=\"4869\" data-end=\"4899\">Polarisation optimis\u00e9e de l'antenne<\/li>\n<li data-start=\"4902\" data-end=\"4942\">S\u00e9lection des fr\u00e9quences en fonction de l'environnement<\/li>\n<li data-start=\"4945\" data-end=\"4975\">Enqu\u00eates sur le terrain et essais pilotes<\/li>\n<\/ul>\n<p data-start=\"4977\" data-end=\"5127\">\u00c0 <strong data-start=\"4980\" data-end=\"4997\">XIUCHENG RFID<\/strong>, La compatibilit\u00e9 des mat\u00e9riaux est \u00e9valu\u00e9e au cours de la <strong data-start=\"5046\" data-end=\"5087\">la phase de s\u00e9lection et de personnalisation des \u00e9tiquettes<\/strong> afin de garantir des performances stables \u00e0 long terme.<\/p>\n<h2 data-start=\"5134\" data-end=\"5147\">Conclusion<\/h2>\n<p data-start=\"5149\" data-end=\"5262\">Le blocage du signal RFID n'est pas un d\u00e9faut de la technologie, c'est un probl\u00e8me de s\u00e9curit\u00e9. <strong data-start=\"5210\" data-end=\"5261\">un d\u00e9fi physique qui peut \u00eatre contourn\u00e9<\/strong>.<\/p>","protected":false},"excerpt":{"rendered":"<p>La technologie RFID est largement utilis\u00e9e dans le contr\u00f4le d'acc\u00e8s, le suivi des biens, la logistique, la vente au d\u00e9tail et l'automatisation industrielle. Cependant, l'un des d\u00e9fis les plus courants dans les d\u00e9ploiements r\u00e9els est l'interf\u00e9rence du signal RFID caus\u00e9e par les mat\u00e9riaux environnants. 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