{"id":3420,"date":"2026-10-15T09:51:20","date_gmt":"2026-10-15T01:51:20","guid":{"rendered":"https:\/\/daweiplast.com\/zh_cn\/?p=3420"},"modified":"2026-10-15T09:51:20","modified_gmt":"2026-10-15T01:51:20","slug":"plastic-part-surface-finishes-matte-gloss-painting-plating","status":"publish","type":"post","link":"https:\/\/daweiplast.com\/fr\/plastic-part-surface-finishes-matte-gloss-painting-plating\/","title":{"rendered":"Comment choisir l'effet de surface des accessoires en plastique : mat, brillant, peinture, galvanoplastie, gravure laser et s\u00e9rigraphie"},"content":{"rendered":"<div class=\"dwaa-article\">\n<figure class=\"dwaa-product-photo\">\n<div class=\"dwaa-photo-frame\"><img fetchpriority=\"high\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/daweiplast.com\/wp-content\/uploads\/2026\/10\/dawei-home-buttons-transparent.png\" alt=\"Boutons \u00b7 Photos r\u00e9elles des produits\" width=\"1586\" height=\"992\" \/><\/div><figcaption>Bouton \u00b7 Sch\u00e9ma du produit<\/figcaption><\/figure>\n<section class=\"dwaa-section\">\n<h2>L'effet de surface se divise en r\u00e9alit\u00e9 en deux couches<\/h2>\n<p>La premi\u00e8re couche est la surface de la pi\u00e8ce en plastique elle-m\u00eame, d\u00e9termin\u00e9e par l'\u00e9tat de surface de l'empreinte du moule : plus l'empreinte est polie brillante, plus la surface moul\u00e9e est brillante ; avec une texture grav\u00e9e ou une texture par \u00e9lectro\u00e9rosion, la surface moul\u00e9e est mate ou textur\u00e9e. Ce type d'effet est obtenu directement lors du moulage, sans op\u00e9ration suppl\u00e9mentaire, et ne modifie pas les dimensions d'ajustement.<\/p>\n<p>La seconde couche est le post-traitement apr\u00e8s moulage : peinture par pulv\u00e9risation, placage, gravure laser, s\u00e9rigraphie. Les deux couches peuvent se superposer, par exemple une base mate suivie d'un LOGO en s\u00e9rigraphie. Distinguer clairement ces deux couches permet, lors de la communication, de d\u00e9terminer si une exigence doit conduire \u00e0 modifier le moule ou \u00e0 ajouter une \u00e9tape de post-traitement.<\/p>\n<\/section>\n<section class=\"dwaa-section\">\n<h2>Peinture par pulv\u00e9risation et huile \u00e0 toucher<\/h2>\n<p>La peinture par pulv\u00e9risation consiste \u00e0 appliquer une couche de rev\u00eatement sur la surface d'une pi\u00e8ce en plastique. Trois objectifs sont courants : uniformiser la couleur et la brillance, masquer de l\u00e9gers \u00e9carts de teinte et des lignes d'\u00e9coulement, et obtenir un toucher sp\u00e9cifique, comme une peinture caoutchout\u00e9e ou une huile \u00e0 toucher. Pour de petites pi\u00e8ces telles que les boutons et les cordons de fermeture \u00e0 glissi\u00e8re, lorsqu'il s'agit d'uniformiser la couleur sur un lot entier, la pulv\u00e9risation est une pratique courante.<\/p>\n<p>Deux points sont facilement n\u00e9glig\u00e9s. Premi\u00e8rement, le rev\u00eatement a une \u00e9paisseur, ce qui modifie l\u00e9g\u00e8rement le contour ext\u00e9rieur et les positions des trous ; les structures \u00e0 ajustement serr\u00e9 doivent \u00eatre \u00e9valu\u00e9es \u00e0 l'avance selon les dimensions apr\u00e8s pulv\u00e9risation. Deuxi\u00e8mement, la r\u00e9sistance \u00e0 l'abrasion et aux solvants du rev\u00eatement doit \u00eatre confirm\u00e9e par des essais, et l'adh\u00e9rence est g\u00e9n\u00e9ralement v\u00e9rifi\u00e9e par des m\u00e9thodes telles que le quadrillage et le frottement. Pour la couleur et la brillance, il est \u00e9galement recommand\u00e9 de conserver une r\u00e9f\u00e9rence sur \u00e9chantillon physique.<\/p>\n<\/section>\n<section class=\"dwaa-section\">\n<h2>\u00c9lectroplastie : courante pour les pi\u00e8ces apparentes, mais \u00e0 planifier \u00e0 l'avance<\/h2>\n<p>L'\u00e9lectroplastie des pi\u00e8ces en plastique se r\u00e9partit couramment en deux cat\u00e9gories : l'\u00e9lectrod\u00e9position aqueuse et le d\u00e9p\u00f4t sous vide, dont l'objectif est le plus souvent de cr\u00e9er un aspect m\u00e9tallique. Ses limites sont assez claires : elle impose des exigences sur le substrat, g\u00e9n\u00e9ralement l'ABS et ses mat\u00e9riaux modifi\u00e9s ; le d\u00e9p\u00f4t modifie les dimensions, et le jeu d'ajustement doit \u00eatre \u00e9valu\u00e9 selon les dimensions apr\u00e8s \u00e9lectroplastie ; les pi\u00e8ces \u00e9lectroplaqu\u00e9es ne conviennent g\u00e9n\u00e9ralement pas aux zones soumises \u00e0 des d\u00e9formations fr\u00e9quentes, car la capacit\u00e9 du d\u00e9p\u00f4t \u00e0 supporter la d\u00e9formation est limit\u00e9e.<\/p>\n<p>La luminosit\u00e9, la diff\u00e9rence de couleur et l'adh\u00e9rence du rev\u00eatement doivent toutes \u00eatre confirm\u00e9es lors de la phase d'\u00e9chantillonnage. Si le produit pr\u00e9sente \u00e0 la fois des exigences d'assemblage et des exigences d'aspect m\u00e9tallique, il est recommand\u00e9 d'\u00e9valuer ces deux aspects ensemble d\u00e8s la phase de conception structurelle, plut\u00f4t que de modifier la structure une fois l'aspect ext\u00e9rieur fig\u00e9.<\/p>\n<\/section>\n<section class=\"dwaa-section\">\n<h2>Gravure laser et s\u00e9rigraphie : deux m\u00e9thodes de marquage<\/h2>\n<p>La gravure laser consiste \u00e0 graver un motif sur la surface \u00e0 l'aide d'un laser ; ses avantages sont la r\u00e9sistance \u00e0 l'abrasion et la faible tendance \u00e0 se d\u00e9coller, ce qui la rend adapt\u00e9e aux traits fins et aux marquages monochromes ; sa limite est que les couleurs ne peuvent g\u00e9n\u00e9ralement pr\u00e9senter qu'une diff\u00e9rence de ton clair\/fonc\u00e9, sans possibilit\u00e9 de reproduction libre des couleurs.<\/p>\n<p>La s\u00e9rigraphie consiste \u00e0 d\u00e9poser l'encre \u00e0 travers un \u00e9cran ; elle permet d'obtenir plusieurs couleurs, pour un co\u00fbt plus faible, et convient aux surfaces planes ou proches du plan ; sa durabilit\u00e9 d\u00e9pend de l'encre et du mode de s\u00e9chage, et elle est relativement sensible aux rayures ou \u00e0 l'effacement par les solvants.<\/p>\n<p>La logique de choix peut se r\u00e9sumer en une phrase : pour un rendu r\u00e9sistant \u00e0 l'abrasion et monochrome, utiliser la gravure laser ; pour un rendu multicolore sur une zone plane, utiliser la s\u00e9rigraphie. Les pi\u00e8ces telles que les \u00e9tiquettes de v\u00eatements, qui n\u00e9cessitent des motifs multicolores, font souvent appel \u00e0 la s\u00e9rigraphie, tandis que les logos de marque n\u00e9cessitant une r\u00e9sistance \u00e0 l'abrasion durable sont plus adapt\u00e9s \u00e0 la gravure laser. Pour un marquage sur une surface courbe ou en relief, il est recommand\u00e9, dans les deux cas, de r\u00e9aliser d'abord un \u00e9chantillon pour confirmer le rendu r\u00e9el.<\/p>\n<\/section>\n<section class=\"dwaa-section\">\n<h2>Trois choses \u00e0 pr\u00e9ciser lorsqu'on formule une demande<\/h2>\n<p>Premi\u00e8rement, l'emplacement et la fonction : sur quelle face se trouve le marquage, s'agit-il d'une face apparente, sera-t-il fr\u00e9quemment soumis \u00e0 frottement ou expos\u00e9 \u00e0 des solvants.<\/p>\n<p>Deuxi\u00e8mement, la r\u00e9f\u00e9rence : pour la couleur, la brillance et le toucher, il est pr\u00e9f\u00e9rable de fournir une r\u00e9f\u00e9rence physique ; donner uniquement un num\u00e9ro de teinte ou \u00ab un peu plus brillant \u00bb rend l'alignement tr\u00e8s difficile.<\/p>\n<p>Troisi\u00e8mement, les exigences de test : r\u00e9sistance \u00e0 l'abrasion, \u00e0 l'alcool, \u00e0 la sueur, adh\u00e9rence ; selon quelles conditions tester, et \u00e0 quel niveau consid\u00e9rer le r\u00e9sultat comme conforme. En inscrivant ces trois \u00e9l\u00e9ments dans les documents de demande de devis, le fournisseur pourra proposer une solution ex\u00e9cutable et un co\u00fbt.<\/p>\n<\/section>\n<section class=\"dwaa-faq\" aria-label=\"Questions fr\u00e9quentes\">\n<h2>Questions fr\u00e9quentes<\/h2>\n<div class=\"dwaa-answer\">\n<h3>Peut-on r\u00e9aliser un aspect mat et un aspect brillant sur un m\u00eame produit<\/h3>\n<p>Oui. La pratique courante consiste \u00e0 traiter le moule par zones, une partie fortement polie et une autre textur\u00e9e par gravure ; il est \u00e9galement possible de mouler la pi\u00e8ce enti\u00e8re puis d'appliquer localement une peinture par pulv\u00e9risation. La premi\u00e8re solution n'ajoute pas d'op\u00e9ration en aval, mais exige une usinabilit\u00e9 du moule plus pouss\u00e9e ; la seconde est plus flexible, mais implique un rev\u00eatement. La d\u00e9limitation des zones et l'effet de transition doivent \u00eatre confirm\u00e9s par un \u00e9chantillon.<\/p>\n<\/div>\n<div class=\"dwaa-answer\">\n<h3>Le placage affecte-t-il l'assemblage ?<\/h3>\n<p>Oui. Le rev\u00eatement a une \u00e9paisseur, qui se traduit g\u00e9n\u00e9ralement par une l\u00e9g\u00e8re augmentation du contour ext\u00e9rieur et une l\u00e9g\u00e8re r\u00e9duction des trous. Si le jeu d'assemblage est d\u00e9j\u00e0 serr\u00e9, le placage peut emp\u00eacher le montage. C'est pourquoi, pour les pi\u00e8ces concern\u00e9es par le placage, les dimensions d'ajustement doivent \u00eatre \u00e9valu\u00e9es selon l'\u00e9tat apr\u00e8s placage, et v\u00e9rifi\u00e9es concr\u00e8tement en montant les pi\u00e8ces assorties lors de la phase d'\u00e9chantillonnage.<\/p>\n<\/div>\n<div class=\"dwaa-answer\">\n<h3>Le logo en s\u00e9rigraphie s'effacera-t-il \u00e0 l'usage ?<\/h3>\n<p>Cela d\u00e9pend de l'encre, du mode de durcissement et des conditions r\u00e9elles de frottement. Sur les zones fr\u00e9quemment frott\u00e9es ou expos\u00e9es \u00e0 l'alcool ou \u00e0 la sueur, la s\u00e9rigraphie s'use relativement facilement. Dans ce type de situation, on peut envisager de passer au marquage laser, ou d'ajouter un traitement protecteur apr\u00e8s la s\u00e9rigraphie, le r\u00e9sultat final \u00e9tant d\u00e9termin\u00e9 par les essais.<\/p>\n<\/div>\n<\/section>\n<nav class=\"dwaa-products\" aria-label=\"Produits associ\u00e9s\">\n<h2>D\u00e9couvrir les produits associ\u00e9s<\/h2>\n<p><a href=\"https:\/\/daweiplast.com\/fr\/ecusson-logo-de-vetement-2\/\">\u00c9tiquette de v\u00eatement<\/a> \u00b7 <a href=\"https:\/\/daweiplast.com\/fr\/produits-et-services\/accessoires-vestimentaires\/\">Accessoires pour v\u00eatements<\/a><\/p>\n<\/nav>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u00c0 quels usages conviennent respectivement le mat, le brillant, la peinture, la galvanoplastie, la gravure laser et la s\u00e9rigraphie ? Cet article explique les deux origines des effets de surface des pi\u00e8ces en plastique, leur impact respectif sur les dimensions et l'assemblage, ainsi que les informations \u00e0 fournir lors d'une demande de devis.<\/p>","protected":false},"author":1,"featured_media":3225,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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