{"id":7870,"date":"2025-01-27T10:03:33","date_gmt":"2025-01-27T10:03:33","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=7870"},"modified":"2026-04-28T10:42:48","modified_gmt":"2026-04-28T10:42:48","slug":"principle-of-waterless-offset-plate-production-photoinitiator","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/principle-of-waterless-offset-plate-production-photoinitiator\/","title":{"rendered":"Principe de la production de plaques offset sans eau - Photoinitiateur"},"content":{"rendered":"<p>Principe de la production de plaques offset sans eau - Photoinitiateur<\/p>\n<p>La pr\u00e9paration de la plaque offset sans eau se divise en deux types : le type positif (expos\u00e9 avec une image positive) et le type n\u00e9gatif (expos\u00e9 avec une image n\u00e9gative), en fonction de la composition de la couche photosensible de la plaque. Apr\u00e8s l'exposition d'une image n\u00e9gative, la partie expos\u00e9e du caoutchouc de silicone tombe apr\u00e8s le d\u00e9veloppement, exposant la couche d'encre pro (graphique), et la partie non expos\u00e9e (blanc) du caoutchouc de silicone est conserv\u00e9e ; au contraire, la partie expos\u00e9e de la couche photosensible r\u00e9ticule avec la couche de caoutchouc de silicone pour devenir une couche d'encre r\u00e9pulsive apr\u00e8s le d\u00e9veloppement de l'exposition d'une image positive, et la partie non expos\u00e9e de la couche de caoutchouc de silicone est enlev\u00e9e, entra\u00eenant la formation d'une couche d'encre pro. La figure 3-12 illustre l'exposition d'une image n\u00e9gative pour illustrer le processus de fabrication d'une plaque offset sans eau.<\/p>\n<p>Sch\u00e9ma du processus de fabrication des plaques n\u00e9gatives pour l'impression offset sans eau<\/p>\n<p>L'impression offset sans eau est principalement adapt\u00e9e \u00e0 la haute qualit\u00e9, aux petits tirages et aux d\u00e9lais de livraison courts, tels que les emballages \u00e0 valeur ajout\u00e9e, les cartes en plastique, les \u00e9tiquettes autocollantes, les applications 3D, les miroirs convexes, les CD\/DVD, les scell\u00e9s en plastique pour les produits en bois, etc. Il est particuli\u00e8rement int\u00e9ressant de l'utiliser dans certains domaines d'impression extr\u00eames.<\/p>\n<p>\u00c9tant donn\u00e9 que la partie vierge de la plaque offset sans eau n'est pas prot\u00e9g\u00e9e par une couche d'eau et que l'encre est rejet\u00e9e par la faible tension superficielle de la couche de caoutchouc silicone, les encres offset sans eau doivent avoir une forte coh\u00e9sion, c'est-\u00e0-dire une viscosit\u00e9 \u00e9lev\u00e9e, afin que la plaque ne soit pas souill\u00e9e (la partie vierge de la plaque ne contient pas d'encre).<\/p>\n<p>L'impression offset sans eau ne n\u00e9cessite pas de solution de mouillage, mais seulement un processus d'encrage. Par cons\u00e9quent, il est n\u00e9cessaire que la partie graphique du processus d'encrage absorbe bien l'encre et que la partie blanche repousse l'encre.<\/p>\n<p>Selon les param\u00e8tres de l'\u00e9nergie de surface de l'encre, tant que l'\u00e9nergie de surface de la partie graphique est sup\u00e9rieure \u00e0 celle de l'encre, l'\u00e9nergie de surface de la partie vierge est inf\u00e9rieure \u00e0 celle de l'encre. Dans le choix du mat\u00e9riau, afin d'\u00e9viter que l'encre sur la partie vierge ne soit sale et collante, l'\u00e9nergie de surface de la partie vierge est g\u00e9n\u00e9ralement bien inf\u00e9rieure \u00e0 l'\u00e9nergie de surface de l'encre. De nos jours, la version sans niveau la plus aboutie, dont la partie vierge est compos\u00e9e de caoutchouc de silicone, a une \u00e9nergie de surface tr\u00e8s faible. La partie graphique est compos\u00e9e de polyester ayant de bonnes propri\u00e9t\u00e9s lipophiles pour le transfert de l'encre.<\/p>\n<p>L'impression offset sans eau dans le processus d'impression, en raison de la pr\u00e9sence de rouleaux encreurs et d'autres rouleaux en caoutchouc souple (mat\u00e9riaux en caoutchouc), le cercle d'hyst\u00e9r\u00e9sis, la chaleur g\u00e9n\u00e9r\u00e9e par la consommation interne entra\u00eenera une augmentation de la temp\u00e9rature de l'encre et une diminution de son \u00e9nergie de surface. Lorsque l'\u00e9nergie de surface est r\u00e9duite dans une certaine mesure, il est possible de d\u00e9truire la relation normale d'\u00e9nergie de surface entre la partie vierge et l'encre, de sorte que la partie vierge est sale. Par cons\u00e9quent, des am\u00e9liorations doivent \u00eatre apport\u00e9es \u00e0 la construction de la presse d'imprimerie. Peut \u00eatre ins\u00e9r\u00e9 entre le rouleau en caoutchouc souple et le rouleau encreur \u00e0 fil m\u00e9tallique creux, au rouleau encreur \u00e0 fil m\u00e9tallique \u00e0 travers l'air ou l'eau et d'autres moyens de r\u00e9frig\u00e9ration, afin de contr\u00f4ler la temp\u00e9rature de l'encre.<\/p>\n<p>L'impression offset sans eau utilise une encre sp\u00e9ciale, dont la composition de base et l'encre d'impression offset traditionnelle sont similaires en ce qui concerne le choix de la couleur, la principale diff\u00e9rence \u00e9tant l'encre utilis\u00e9e dans la r\u00e9sine qui est li\u00e9e \u00e0 la partie mat\u00e9rielle. L'encre pour l'impression offset sans eau et l'encre pour l'impression offset traditionnelle sont compar\u00e9es aux propri\u00e9t\u00e9s sp\u00e9ciales suivantes.<\/p>\n<p>\u2460 Elle doit avoir une viscosit\u00e9 plus \u00e9lev\u00e9e que l'encre offset traditionnelle, afin d'assurer une coh\u00e9sion relativement importante de l'encre, suffisante pour \u00eatre sup\u00e9rieure \u00e0 la force entre l'encre et la couche de silicone, de sorte que la couche de silicone soit ol\u00e9ophobe, que l'encre et la partie non graphique de la couche de caoutchouc de silicone se repoussent, et que l'impression se fasse sans eau.<\/p>\n<p>\u2461 doit s'adapter aux propri\u00e9t\u00e9s rh\u00e9ologiques particuli\u00e8res de l'impression offset sans eau. L'encre de l'impression offset sans eau ayant une viscosit\u00e9 \u00e9lev\u00e9e, il est plus difficile de la faire circuler entre le rouleau encreur et la plaque d'impression, ce qui exige une conception sp\u00e9ciale de l'encre, afin qu'elle ait de meilleures propri\u00e9t\u00e9s rh\u00e9ologiques.<\/p>\n<p>\u2462 En raison de l'influence particuli\u00e8re de la temp\u00e9rature dans l'impression offset sans eau, il est \u00e9galement souhaitable de disposer d'une plus grande plage d'adaptation \u00e0 la temp\u00e9rature.<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>Comment les formulateurs \u00e9valuent-ils g\u00e9n\u00e9ralement ce sujet de photoinitiateur<\/h2>\n<p>Lorsque les acheteurs techniques ou les formulateurs \u00e9valuent des photoinitiateurs, le cadre de d\u00e9cision le plus utile concerne g\u00e9n\u00e9ralement la qualit\u00e9 de la polym\u00e9risation associ\u00e9e \u00e0 l'ad\u00e9quation \u00e0 l'application : quel paquet polym\u00e9rise de mani\u00e8re fiable, maintient une apparence acceptable et fonctionne toujours sous la lampe, l'\u00e9paisseur du film et les conditions du substrat du processus r\u00e9el.<\/p>\n<ul>\n<li><strong>Associez d'abord le paquet \u00e0 la lampe :<\/strong> Les lampes \u00e0 mercure, les LED UV et les syst\u00e8mes de lumi\u00e8re visible peuvent classer de la m\u00eame mani\u00e8re des photoinitiateurs tr\u00e8s diff\u00e9rents.<\/li>\n<li><strong>V\u00e9rifier la polym\u00e9risation en profondeur et la polym\u00e9risation de surface s\u00e9par\u00e9ment :<\/strong> un film sec en apparence peut \u00eatre faible en dessous.<\/li>\n<li><strong>\u00c9quilibrer le jaunissement avec la r\u00e9activit\u00e9 :<\/strong> La voie de polym\u00e9risation profonde la plus forte n'est pas toujours le meilleur choix commercial si la couleur ou le risque de migration deviennent inacceptables.<\/li>\n<li><strong>Utilisez la formule finale comme r\u00e9f\u00e9rence\u00a0:<\/strong> La charge de pigment, le paquet de monom\u00e8re et l'\u00e9paisseur du film peuvent tous modifier le classement apparent du m\u00eame initiateur.<\/li>\n<\/ul>\n<h3>R\u00e9f\u00e9rences de produits recommand\u00e9es<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Utile lorsqu'une formulation n\u00e9cessite une absorption plus forte et un soutien \u00e0 une cure plus profonde.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\">CHLUMINIT 1173<\/a>:<\/strong> Un point de comparaison pratique pour l'initiation classique par UV \u00e0 ondes courtes.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-itx-cas-5495-84-1\/\">CHLUMINIT ITX<\/a>:<\/strong> Une ligne de support d'ondes longues utile dans de nombreux emballages d'encres d'imprimerie.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cq\/\">CHLUMINIT CQ<\/a>:<\/strong> Une r\u00e9f\u00e9rence directe pour les discussions sur le durcissement par la lumi\u00e8re visible et sensible \u00e0 la couleur.<\/li>\n<\/ul>\n<h3>FAQ pour les acheteurs et les formulateurs<\/h3>\n<p><strong>Pourquoi les m\u00e9langes de photoinitiateurs sont-ils si courants ?<\/strong><br \/>Parce qu'un produit peut contr\u00f4ler le jaunissement ou bien s'adapter \u00e0 la lampe, tandis qu'un autre am\u00e9liore la profondeur de durcissement ou les performances en vitesse de ligne, l'ensemble complet est souvent plus performant que n'importe quel grade individuel.<\/p>\n<p><strong>Une polym\u00e9risation incompl\u00e8te doit-elle toujours \u00eatre r\u00e9solue en ajoutant plus d'initiateur ?<\/strong><br \/>Pas automatiquement. La limitation r\u00e9elle peut \u00eatre la lampe, l'\u00e9paisseur du film, la teinte du pigment, ou le reste du syst\u00e8me r\u00e9actif plut\u00f4t qu'un simple sous-dosage.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>R\u00e9ponse rapide :<\/strong> For practical formulation work, photoinitiator screening starts with the light source and film build, then checks yellowing, adhesion, and cure completeness under real production conditions.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<h4><strong><b>Si vous avez besoin de Price, veuillez indiquer vos coordonn\u00e9es dans le formulaire ci-dessous. Nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures. Vous pouvez \u00e9galement m'envoyer un courriel <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #00ccff;\">info@longchangchemical.com<\/span><\/a>\u00a0pendant les heures de travail ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) ou utilisez le chat en direct du site web pour obtenir une r\u00e9ponse rapide.<\/b><\/strong><\/h4>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 435.77pt;\" border=\"0\" width=\"581\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 215.25pt;\" width=\"287\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur TPO<\/span><\/a><\/td>\n<td style=\"width: 220.50pt;\" width=\"294\">CAS 75980-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Photoinitiateur TMO<\/span><\/a><\/td>\n<td>CAS 270586-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur PD-01<\/span><\/a><\/td>\n<td>CAS 579-07-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur PBZ<\/span><\/a><\/td>\n<td>CAS 2128-93-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur OXE-02<\/span><\/a><\/td>\n<td>CAS 478556-66-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Photoinitiateur OMBB<\/span><\/a><\/td>\n<td>CAS 606-28-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Photoinitiateur MPBZ (6012)<\/span><\/a><\/td>\n<td>CAS 86428-83-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBP<\/span><\/a><\/td>\n<td>CAS 134-84-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBF<\/span><\/a><\/td>\n<td>CAS 15206-55-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur LAP<\/span><\/a><\/td>\n<td>CAS 85073-19-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur ITX<\/span><\/a><\/td>\n<td>CAS 5495-84-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">Photoinitiateur EMK<\/span><\/a><\/td>\n<td>CAS 90-93-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur EHA<\/span><\/a><\/td>\n<td>CAS 21245-02-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Photo-initiateur EDB<\/span><\/a><\/td>\n<td>CAS 10287-53-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur DETX<\/span><\/a><\/td>\n<td>CAS 82799-44-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Photoinitiateur CQ \/ Camphorquinone<\/span><\/a><\/td>\n<td>CAS 10373-78-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur CBP<\/span><\/a><\/td>\n<td>CAS 134-85-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">Photo-initiateur BP \/ Benzoph\u00e9none<\/span><\/a><\/td>\n<td>CAS 119-61-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">Photoinitiateur BMS<\/span><\/a><\/td>\n<td>CAS 83846-85-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">Photoinitiateur 938<\/span><\/a><\/td>\n<td>CAS 61358-25-6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 937<\/span><\/a><\/td>\n<td>CAS 71786-70-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Photo-initiateur 819 DW<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur 819<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur 784<\/span><\/a><\/td>\n<td>CAS 125051-32-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 754<\/span><\/a><\/td>\n<td>CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6993<\/span><\/a><\/td>\n<td>CAS 71449-78-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6976<\/span><\/a><\/td>\n<td>CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 379<\/span><\/a><\/td>\n<td>CAS 119344-86-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur 369<\/span><\/a><\/td>\n<td>CAS 119313-12-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-160\/\">Photoinitiateur 160<\/a><\/span><\/td>\n<td>CAS 71868-15-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1206<\/span><\/a><\/td>\n<td><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1173<\/span><\/a><\/td>\n<td>CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The preparation of the waterless offset plate is divided into positive type (exposed with a positive picture) and negative type (exposed with a negative picture), 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