{"id":9437,"date":"2026-10-20T02:19:08","date_gmt":"2026-10-20T02:19:08","guid":{"rendered":"https:\/\/www.greenhousepolys.com\/?p=9437"},"modified":"2026-10-13T02:33:59","modified_gmt":"2026-10-13T02:33:59","slug":"3-layer-vs-5-layer-co-extrusion-greenhouse-films","status":"publish","type":"post","link":"https:\/\/www.greenhousepolys.com\/fr\/3-layer-vs-5-layer-co-extrusion-greenhouse-films-article\/","title":{"rendered":"Films de serre coextrud\u00e9s \u00e0 3 couches ou \u00e0 5 couches : lequel convient le mieux \u00e0 votre projet ?"},"content":{"rendered":"<p>Dans le domaine de l'agriculture prot\u00e9g\u00e9e, les rev\u00eatements de serre en poly\u00e9thyl\u00e8ne (PE) ont consid\u00e9rablement \u00e9volu\u00e9 depuis les simples b\u00e2ches en plastique monocouches. Les rev\u00eatements de serre modernes haute performance sont fabriqu\u00e9s \u00e0 l'aide de technologies de pointe <strong>technologie de co-extrusion<\/strong>, qui consiste \u00e0 superposer diff\u00e9rentes r\u00e9sines polym\u00e8res et additifs chimiques pour former un film unique, homog\u00e8ne et tr\u00e8s r\u00e9sistant.<\/p>\n\n\n\n<p>Lorsqu'ils s'approvisionnent en film plastique pour serre en gros, les producteurs professionnels, les constructeurs de serres et les distributeurs sont souvent confront\u00e9s \u00e0 un choix crucial : <strong>Film coextrud\u00e9 \u00e0 3 couches vs film coextrud\u00e9 \u00e0 5 couches<\/strong>.<\/p>\n\n\n\n<p>Bien que ces deux mat\u00e9riaux pr\u00e9sentent des avantages significatifs par rapport au plastique monocouche traditionnel, leurs caract\u00e9ristiques structurelles, leur dur\u00e9e de vie fonctionnelle et leur profil de co\u00fbts varient. Vous trouverez ci-dessous une comparaison technique et commerciale r\u00e9alis\u00e9e par les experts de Fenglong afin de vous aider \u00e0 choisir la couverture la mieux adapt\u00e9e aux exigences de votre projet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Qu'est-ce que la technologie de co-extrusion dans la fabrication de films pour serres ?<\/h2>\n\n\n\n<p>La co-extrusion consiste \u00e0 faire fondre plusieurs r\u00e9sines polym\u00e8res (g\u00e9n\u00e9ralement du LLDPE, du LDPA et de l'EVA) dans des extrudeuses distinctes, puis \u00e0 les assembler \u00e0 l'aide d'une seule t\u00eate d'extrusion afin de former un film multicouche.<\/p>\n\n\n\n<p>Plut\u00f4t que de m\u00e9langer tous les additifs fonctionnels dans un seul m\u00e9lange de r\u00e9sine homog\u00e8ne, <strong>La co-extrusion permet aux fabricants d'isoler des additifs sp\u00e9cifiques au sein de couches distinctes<\/strong>. Par exemple :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Couche externe (expos\u00e9e \u00e0 l'atmosph\u00e8re)<\/strong>: Con\u00e7u pour offrir une stabilisation maximale contre les UV (HALS), une r\u00e9sistance \u00e0 la poussi\u00e8re et une r\u00e9sistance aux intemp\u00e9ries.<\/li>\n\n\n\n<li><strong>Couches centrales<\/strong>: Formul\u00e9 \u00e0 partir de polym\u00e8res haute densit\u00e9 pour une r\u00e9sistance maximale \u00e0 la traction et \u00e0 la d\u00e9chirure, ainsi qu'une excellente r\u00e9tention de la chaleur infrarouge.<\/li>\n\n\n\n<li><strong>Couche interne (c\u00f4t\u00e9 cultures)<\/strong>: Enrichi en tensioactifs anti-gouttes, anti-bu\u00e9e et anti-vapeur pour limiter la condensation.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. Comparaison structurelle et fonctionnelle : 3 couches contre 5 couches<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">A. Films pour serres \u00e0 co-extrusion \u00e0 trois couches<\/h3>\n\n\n\n<p>Le film \u00e0 trois couches est la norme industrielle de r\u00e9f\u00e9rence dans le secteur de l'agriculture commerciale depuis deux d\u00e9cennies.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>R\u00e9partition des additifs<\/strong>: Assure une s\u00e9paration de base entre la surface ext\u00e9rieure r\u00e9sistante aux UV, le noyau structurel et la surface int\u00e9rieure anti-gouttes.<\/li>\n\n\n\n<li><strong>R\u00e9sistance m\u00e9canique<\/strong>: Offre une bonne r\u00e9sistance \u00e0 la perforation et \u00e0 la d\u00e9chirure, adapt\u00e9e aux port\u00e9es standard et \u00e0 des conditions de vent mod\u00e9r\u00e9es.<\/li>\n\n\n\n<li><strong>Rentabilit\u00e9<\/strong>: Sa production est peu co\u00fbteuse, ce qui en fait un produit tr\u00e8s pris\u00e9 pour les cultures saisonni\u00e8res, les serres en plastique \u00e0 technologie faible \u00e0 moyenne et les march\u00e9s agricoles sensibles aux prix.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">B. Films pour serres \u00e0 co-extrusion \u00e0 5 couches<\/h3>\n\n\n\n<p>La co-extrusion \u00e0 5 couches repr\u00e9sente aujourd'hui le summum de l'ing\u00e9nierie des films agricoles, gr\u00e2ce \u00e0 l'utilisation de sous-couches plus fines et hautement sp\u00e9cialis\u00e9es.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Am\u00e9lioration de l'efficacit\u00e9 des additifs<\/strong>: Les additifs chimiques (tels que les tensioactifs anti-gouttes et les min\u00e9raux diffusant la lumi\u00e8re) interagissent moins entre eux, ce qui prolonge la dur\u00e9e de vie fonctionnelle de chaque additif.<\/li>\n\n\n\n<li><strong>R\u00e9sistance sup\u00e9rieure \u00e0 la traction et \u00e0 la d\u00e9chirure<\/strong>: Des couches individuelles plus fines permettent une meilleure orientation des cha\u00eenes polym\u00e8res, ce qui se traduit par une augmentation pouvant atteindre <strong>Du 20% au 30% : r\u00e9sistance aux chocs et \u00e0 la d\u00e9chirure accrue<\/strong> pour une \u00e9paisseur de film identique (par exemple, 200 microns \/ 8 mil).<\/li>\n\n\n\n<li><strong>Propri\u00e9t\u00e9s optiques avanc\u00e9es<\/strong>: Permet un r\u00e9glage pr\u00e9cis de la diffusion de la lumi\u00e8re (dispersion PAR) sans compromettre la transmission lumineuse totale.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. Tableau r\u00e9capitulatif des principaux indicateurs de performance<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Caract\u00e9ristiques techniques<\/strong><\/td><td><strong>Film coextrud\u00e9 \u00e0 trois couches<\/strong><\/td><td><strong>Film coextrud\u00e9 \u00e0 5 couches<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>R\u00e9sistance \u00e0 la perforation et aux impacts de fl\u00e9chettes<\/strong><\/td><td>Standard \/ \u00c9lev\u00e9<\/td><td>Exceptionnel (sup\u00e9rieur de +251 TP4T)<\/td><\/tr><tr><td><strong>Dur\u00e9e de vie de l'additif anti-gouttes<\/strong><\/td><td>2 \u00e0 3 ans<\/td><td>De 3 \u00e0 5 ans<\/td><\/tr><tr><td><strong>Flexibilit\u00e9 de la diffusion de la lumi\u00e8re<\/strong><\/td><td>Mod\u00e9r\u00e9<\/td><td>Tr\u00e8s personnalisable<\/td><\/tr><tr><td><strong>R\u00e9tention de la chaleur par infrarouge thermique<\/strong><\/td><td>Standard<\/td><td>\u00c9lev\u00e9 (couche centrale optimis\u00e9e)<\/td><\/tr><tr><td><strong>R\u00e9sistance au vent et \u00e0 la gr\u00eale<\/strong><\/td><td>Moyen \u00e0 bon<\/td><td>Haute r\u00e9sistance<\/td><\/tr><tr><td><strong>Application cible<\/strong><\/td><td>Tunnels standard \/ Exploitations agricoles r\u00e9gionales<\/td><td>Serres high-tech \u00e0 trav\u00e9es multiples<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">4. Quelle option convient le mieux \u00e0 votre projet ?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Optez pour un film coextrud\u00e9 \u00e0 trois couches dans les cas suivants :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vous exploitez des serres en poly\u00e9thyl\u00e8ne \u00e0 trav\u00e9e unique \u00e0 usage saisonnier ou des serres \u00e0 arceaux de faible hauteur.<\/li>\n\n\n\n<li>Les conditions m\u00e9t\u00e9orologiques de votre r\u00e9gion se caract\u00e9risent par des charges de vent faibles et une exposition solaire mod\u00e9r\u00e9e.<\/li>\n\n\n\n<li>Les d\u00e9penses d'investissement initiales (CapEx) constituent votre principal indicateur en mati\u00e8re d'achats.<\/li>\n\n\n\n<li>Vous pr\u00e9voyez de remplacer la b\u00e2che de votre serre tous les 2 \u00e0 3 ans.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Optez pour un film coextrud\u00e9 \u00e0 5 couches si :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vous construisez des serres commerciales \u00e0 grande port\u00e9e et \u00e0 plusieurs trav\u00e9es, ou des solutions alternatives automatis\u00e9es aux serres traditionnelles.<\/li>\n\n\n\n<li>Votre exploitation agricole est situ\u00e9e dans des zones expos\u00e9es \u00e0 des vents violents, \u00e0 la gr\u00eale, \u00e0 des charges de neige ou \u00e0 un rayonnement UV extr\u00eame (par exemple, en haute altitude ou dans des climats d\u00e9sertiques).<\/li>\n\n\n\n<li>Vous cultivez des plantes \u00e0 forte valeur ajout\u00e9e (par exemple, des baies, des tomates, des fleurs) qui n\u00e9cessitent une diffusion maximale de la lumi\u00e8re PAR et un contr\u00f4le rigoureux de la condensation.<\/li>\n\n\n\n<li>Vous avez besoin d'une housse multi-saisons garantie pour 4 \u00e0 5 ans ou plus d'utilisation continue.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Source : Housses multicouches sur mesure de Greenhouse Polys<\/h2>\n\n\n\n<p>Que votre activit\u00e9 n\u00e9cessite des films \u00e0 3 couches \u00e9conomiques ou des films thermiques anti-gouttes sophistiqu\u00e9s \u00e0 5 couches, le choix de r\u00e9sines polym\u00e8res vierges de haute qualit\u00e9 est essentiel pour garantir des performances \u00e0 long terme.<\/p>\n\n\n\n<p>\u00c0 <strong>\u00a0Fenglong<\/strong>, nous fabriquons des b\u00e2ches de serre en poly\u00e9thyl\u00e8ne coextrud\u00e9 \u00e0 3 ou 5 couches, adapt\u00e9es sur mesure \u00e0 vos besoins en termes de largeur, d'\u00e9paisseur (de 100 \u00e0 plus de 200 microns) et d'additifs climatiques.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vous avez besoin de conseils sur les sp\u00e9cifications techniques des films pour votre prochain projet ?<\/strong> <a href=\"https:\/\/www.greenhousepolys.com\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">Contactez notre \u00e9quipe d'ing\u00e9nieurs<\/a> D\u00e8s aujourd'hui, demandez des \u00e9chantillons physiques et les tarifs directs de l'usine !<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Dans le domaine de l'agriculture prot\u00e9g\u00e9e, les rev\u00eatements de serre en poly\u00e9thyl\u00e8ne (PE) ont consid\u00e9rablement \u00e9volu\u00e9 depuis les simples b\u00e2ches en plastique monocouches. Les films de serre modernes haute performance sont fabriqu\u00e9s \u00e0 l'aide d'une technologie de co-extrusion de pointe, qui superpose diff\u00e9rentes r\u00e9sines polym\u00e8res et additifs chimiques pour former un film unique, homog\u00e8ne et tr\u00e8s r\u00e9sistant. Lorsqu'ils s'approvisionnent en films de serre en vrac, les producteurs professionnels, les constructeurs de serres et les distributeurs sont souvent confront\u00e9s \u00e0 un choix crucial : 3 couches [\u2026]<\/p>","protected":false},"author":1,"featured_media":9166,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>3-Layer vs. 5-Layer Co-Extrusion Greenhouse Films - Beijing Fenglong Hitech Co., Ltd<\/title>\n<meta name=\"description\" content=\"Compare 3-layer vs 5-layer co-extrusion greenhouse films. 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