{"id":14519,"date":"2025-04-20T10:12:18","date_gmt":"2025-04-20T10:12:18","guid":{"rendered":"https:\/\/jccmfg.com\/?p=14519"},"modified":"2025-04-20T10:27:21","modified_gmt":"2025-04-20T10:27:21","slug":"le-guide-de-la-mise-sous-vide","status":"publish","type":"post","link":"https:\/\/jccmfg.com\/fr\/the-guide-of-vacuum-bagging\/","title":{"rendered":"Le guide de la mise sous vide"},"content":{"rendered":"

Le guide de la mise sous vide \u00a0 <\/span><\/h1>\n

\"Mise\u00a0<\/span><\/span><\/h1>\n

Le proc\u00e9d\u00e9 traditionnel de stratification manuelle des composites en fibre de carbone pr\u00e9sente des probl\u00e8mes d'infiltration irr\u00e9guli\u00e8re et de formation de bulles d'air, ce qui entra\u00eene une perte significative de r\u00e9sistance de la pi\u00e8ce. Le proc\u00e9d\u00e9 de mise sous vide, quant \u00e0 lui, applique une pression uniforme et constante sur la surface de stratification, ce qui permet d'obtenir une pi\u00e8ce composite robuste et l\u00e9g\u00e8re.\u00a0<\/span><\/p>\n

Ce guide analyse les concepts de base, les \u00e9tapes du processus, les avantages et les sc\u00e9narios d\u2019application de l\u2019ensachage sous vide pour vous aider \u00e0 am\u00e9liorer les performances du produit.<\/span><\/p>\n

1. Qu'est-ce que le processus de mise sous vide ?<\/span><\/h2>\n

\"Mise<\/p>\n

On l'appelle aussi plastification sous vide.<\/span><\/p>\n

Ce proc\u00e9d\u00e9 utilise le vide pour \u00e9liminer l'exc\u00e8s de r\u00e9sine et appliquer une pression uniforme sur le mat\u00e9riau des couches avant le durcissement et le moulage de la pi\u00e8ce composite. L'air emprisonn\u00e9 entre les couches est \u00e9limin\u00e9, et les fibres des couches entre les stratifi\u00e9s sont li\u00e9es et durcies par polym\u00e9risation adh\u00e9sive.<\/span><\/p>\n

2. Pourquoi choisir le proc\u00e9d\u00e9 de mise sous vide ?<\/span><\/h2>\n
    \n
  • Faible co\u00fbt : mais proche de la qualit\u00e9 de l'autoclave, adapt\u00e9 \u00e0 la production en petit et moyen volume.<\/span><\/li>\n
  • Proc\u00e9d\u00e9 simple : les pi\u00e8ces sont mises sous vide apr\u00e8s laminage manuel ou \u00ab\u00a0lay-up humide\u00a0\u00bb\u00a0<\/span><\/li>\n
  • Improved performance and aesthetics: Excess resin is removed to achieve lightweighting and avoid porosity and voids, improving the part’s surface finish.<\/span><\/li>\n<\/ul>\n

    3. \u00c9tapes de production<\/span><\/h2>\n

    \"Mise<\/p>\n

    (1) Travaux pr\u00e9paratoires<\/span><\/h3>\n

    Outils : Tissu en fibre de carbone, ciseaux, r\u00e9sine \u00e9poxy, balance \u00e9lectronique, tasse en verre, brosse, pompe \u00e0 vide, film pour sac sous vide, couche de d\u00e9capage, tissu respirant, mastic, tuyau de raccordement de pompe \u00e0 vide.<\/span><\/p>\n

    (2) Humide <\/span>lay-up<\/span><\/h3>\n
      \n
    • Pulv\u00e9risation d'un agent de d\u00e9moulage sur la surface du moule, tel qu'une r\u00e9sine \u00e9poxy ou un gelcoat vinylester<\/span><\/li>\n
    • Pesez la r\u00e9sine \u00e9poxy n\u00e9cessaire avec une balance \u00e9lectronique et versez-la dans un verre pour une utilisation ult\u00e9rieure.<\/span><\/li>\n
    • Coupez le tissu en fibre de carbone \u00e0 la taille du moule et au nombre de couches requis.<\/span><\/li>\n
    • Appliquez d'abord une couche de matrice \u00e9poxy sur la surface du moule, puis d\u00e9posez lentement le tissu en fibre de carbone dessus. Appliquez une autre couche de r\u00e9sine \u00e9poxy, puis r\u00e9p\u00e9tez l'op\u00e9ration pr\u00e9c\u00e9dente jusqu'\u00e0 ce que tout le tissu en fibre de carbone soit impr\u00e9gn\u00e9 de r\u00e9sine \u00e9poxy, puis posez-le sur le moule selon l'angle pr\u00e9d\u00e9fini.<\/span><\/li>\n<\/ul>\n

      (3) Pose de mat\u00e9riaux auxiliaires<\/span><\/h3>\n
        \n
      • Posez la couche de d\u00e9capage sur le stratifi\u00e9 pr\u00e9alablement tremp\u00e9 et humidifi\u00e9.<\/span><\/li>\n
      • Ensuite, posez le feutre respirant\u00a0<\/span><\/li>\n
      • Membrane de sac sous vide : placez l'ensemble du stratifi\u00e9 \u00e0 l'int\u00e9rieur d'un sac sous vide et appliquez du mastic sur les bords du p\u00e9rim\u00e8tre\u00a0<\/span><\/li>\n
      • Tuyau d\u00e9flecteur : relie la membrane du sac \u00e0 vide \u00e0 la pompe pour favoriser l'\u00e9coulement de la r\u00e9sine.<\/span><\/li>\n<\/ul>\n

        (4) Aspiration et durcissement<\/span><\/h3>\n
          \n
        • Connectez la pompe \u00e0 vide et allumez-la, utilisez le r\u00e9gulateur de vide pour pomper le vide \u00e0 une pression n\u00e9gative de -0,8 \u00e0 -0,95 bar.<\/span><\/li>\n
        • Laissez durcir pendant plus de 6 heures et \u00e9teignez la pompe \u00e0 vide.<\/span><\/li>\n<\/ul>\n

          (5) D\u00e9moulage et post-traitement<\/span><\/h3>\n
            \n
          • Le stratifi\u00e9 composite est compl\u00e8tement durci, puis le film de mise sous vide doit \u00eatre retir\u00e9 et la pi\u00e8ce moul\u00e9e.<\/span><\/li>\n
          • \u00c9bavurer les bords, poncer, polir et peindre au pistolet ou \u00e0 l'\u00e9poxy.<\/span><\/li>\n<\/ul>\n

            4. Avantages<\/span><\/h2>\n
              \n
            • Personnalisable :<\/b> Le proc\u00e9d\u00e9 d'ensachage sous vide est hautement adaptable et convient aux pi\u00e8ces de tailles, de formes et de g\u00e9om\u00e9tries complexes vari\u00e9es. Modifications requises.\u00a0<\/span><\/li>\n
            • \u00c9conomie d'\u00e9nergie et haute efficacit\u00e9 :<\/b> le co\u00fbt de l'\u00e9quipement requis est seulement de 20%-30% de durcissement en autoclave, et ne n\u00e9cessite pas de consommation d'\u00e9nergie \u00e0 haute temp\u00e9rature, adapt\u00e9 \u00e0 la production par lots faibles et moyens\u00a0<\/span><\/li>\n
            • Conception flexible : <\/b>adapt\u00e9 \u00e0 une vari\u00e9t\u00e9 de structures de surface courbes complexes, appliqu\u00e9 \u00e0 une vari\u00e9t\u00e9 d'industries\u00a0<\/span><\/li>\n
            • Both quality and environmental protection: the vacuum bagging can save the excess epoxy resin, so that the ratio of resin and carbon fiber to reach the ideal and achieve the part’s Lightweighting, reducing air bubbles and improving the surface smoothness of parts.<\/span><\/li>\n<\/ul>\n

              5. L'application de l'ensachage sous vide<\/span><\/h2>\n

              (1) A\u00e9rospatiale<\/span><\/h3>\n
                \n
              • Bo\u00eetier : ailes et pagaies de drone, petits supports de satellites.<\/span><\/li>\n
              • Caract\u00e9ristiques : Des rapports r\u00e9sine\/fibre sup\u00e9rieurs permettent d'obtenir des pi\u00e8ces l\u00e9g\u00e8res (r\u00e9duction de poids d'environ 25-35%) et un moulage de surface de haute pr\u00e9cision.<\/span><\/li>\n<\/ul>\n

                \"Mise<\/h3>\n

                (2) Fabrication automobile<\/span><\/h3>\n
                  \n
                • Bo\u00eetiers : carrosserie en fibre de carbone, panneaux de porte int\u00e9rieurs, ailes, etc.<\/span><\/li>\n
                • Caract\u00e9ristiques\u00a0: Rapide et flexible, personnalisable, fabrication \u00e9conomique, adaptable \u00e0 la personnalisation en petites s\u00e9ries. La r\u00e9duction des bulles de surface am\u00e9liore la douceur de surface des pi\u00e8ces.<\/span><\/li>\n<\/ul>\n

                  \"Mise<\/h3>\n

                  (3) \u00c9quipement de sport de plein air<\/span><\/h3>\n
                    \n
                  • Cas : Cadres de v\u00e9lo, pagaies de kayak.<\/span><\/li>\n
                  • Caract\u00e9ristiques : L'infiltration \u00e9lev\u00e9e de fibres am\u00e9liore la r\u00e9sistance aux chocs et au cisaillement.<\/span><\/li>\n<\/ul>\n

                    (4) \u00c9quipement industriel<\/span><\/h3>\n
                      \n
                    • Cas : Bras robotis\u00e9 et pince.<\/span><\/li>\n
                    • Caract\u00e9ristiques : La porosit\u00e9 r\u00e9duite garantit que les fibres sont enti\u00e8rement impr\u00e9gn\u00e9es de r\u00e9sine, am\u00e9liorant ainsi la rigidit\u00e9 sp\u00e9cifique et la r\u00e9sistance \u00e0 la fatigue, et prolongeant la dur\u00e9e de vie.<\/span><\/li>\n<\/ul>\n

                      6. D\u00e9fis et solutions du processus d'ensachage sous vide<\/span><\/h2>\n

                      D\u00e9fi 1 :<\/b> Les fuites d'air ou les sachets cass\u00e9s entra\u00eenent une pression insuffisante, ce qui affecte finalement le durcissement des pi\u00e8ces lamin\u00e9es.\u00a0<\/span><\/p>\n

                      Solution: <\/b>Utilisez des bandes d'\u00e9tanch\u00e9it\u00e9 \u00e0 haute adh\u00e9rence et v\u00e9rifiez r\u00e9guli\u00e8rement le film du sac sous vide pour \u00e9viter les pannes.<\/span><\/p>\n

                      D\u00e9fi 2 :<\/b> La difficult\u00e9 \u00e0 contr\u00f4ler la pression et la temp\u00e9rature peut entra\u00eener un durcissement non \u00e9tanche des pi\u00e8ces lamin\u00e9es, avec d\u00e9laminage et bavures.<\/span><\/p>\n

                      Solution: <\/b>Utilisez un \u00e9quipement professionnel de mesure de pression (r\u00e9gulateur de vide) et de temp\u00e9rature pour d\u00e9tecter les param\u00e8tres avec pr\u00e9cision.\u00a0<\/span><\/p>\n

                      D\u00e9fi 3 :<\/b> Difficult\u00e9 \u00e0 d\u00e9mouler\u00a0<\/span><\/p>\n

                      Solution : Vaporisez plusieurs fois un agent de d\u00e9moulage tr\u00e8s efficace\u00a0<\/span><\/p>\n

                      D\u00e9fi 4 :<\/b> Bavure de bord\u00a0<\/span><\/p>\n

                      Solution:<\/strong> R\u00e9server des marges usinables pour les pi\u00e8ces lamin\u00e9es, la finition CNC, le pon\u00e7age et le polissage apr\u00e8s durcissement.<\/span><\/p>\n

                      \"Mise<\/h2>\n

                      7. Conclusion<\/span><\/h2>\n

                      Que vous soyez un concepteur de petites et micro-entreprises ou une startup de pi\u00e8ces composites en fibre de carbone, la ma\u00eetrise de cette technologie vous aidera rapidement \u00e0 am\u00e9liorer les performances des produits, \u00e0 atteindre la l\u00e9g\u00e8ret\u00e9 et \u00e0 \u00e9largir le march\u00e9.<\/span><\/p>\n

                      FAQ<\/h2>\n

                      Q\u00a0: Le proc\u00e9d\u00e9 de sac sous vide peut-il \u00eatre utilis\u00e9 pour le durcissement \u00e0 haute temp\u00e9rature\u00a0?<\/b><\/p>\n

                      R : Oui, des films pour sacs sous vide r\u00e9sistants aux hautes temp\u00e9ratures (tels que des films en silicone, avec une r\u00e9sistance \u00e0 la temp\u00e9rature de plus de 200 \u00b0C) doivent \u00eatre s\u00e9lectionn\u00e9s.<\/span><\/p>\n

                      Q\u00a0: Combien de temps faut-il pour que les composants composites durcissent\u00a0?<\/b><\/p>\n

                      R : Le temps de durcissement \u00e0 temp\u00e9rature ambiante est d'environ 24 heures. Un chauffage \u00e0 80 \u00b0C peut le r\u00e9duire \u00e0 4 \u00e0 8 heures.<\/span><\/p>\n

                      Q\u00a0:\u00a0Quelle est la pression en PSI pour la mise sous vide\u00a0?<\/b><\/p>\n

                      R : Le PSI (livres par pouce carr\u00e9) est le param\u00e8tre cl\u00e9 pour mesurer la force de la pression du vide, qui doit \u00eatre comprise entre -12 et -14 PSI.<\/span><\/p>\n

                      Q\u00a0:\u00a0L\u2019ensachage sous vide est-il identique \u00e0 la stratification humide\u00a0?<\/b><\/p>\n

                      R : Non ! Bien que les deux proc\u00e9d\u00e9s soient souvent utilis\u00e9s en combinaison, l'ensachage sous vide est une version am\u00e9lior\u00e9e de la stratification humide, la principale diff\u00e9rence \u00e9tant l'utilisation ou non d'une pression n\u00e9gative sous vide.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

                      The Guide of Vacuum Bagging \u00a0 \u00a0 The traditional hand lay-up process for carbon fiber composites suffers from uneven infiltration and air bubbles, resulting in a significant loss of part strength. The vacuum bagging process, on the other hand, applies uniform and consistent pressure to the layup surface, resulting in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14519","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"\nThe Guide of Vacuum Bagging - JCC Carbon Fiber Fabrication<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jccmfg.com\/fr\/le-guide-de-la-mise-sous-vide\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Guide of Vacuum Bagging - JCC Carbon Fiber Fabrication\" \/>\n<meta property=\"og:description\" content=\"The Guide of Vacuum Bagging \u00a0 \u00a0 The traditional hand lay-up process for carbon fiber composites suffers from uneven infiltration and air bubbles, resulting in a significant loss of part strength. 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