{"id":25477,"date":"2026-10-23T21:04:16","date_gmt":"2026-10-23T13:04:16","guid":{"rendered":"https:\/\/www.sanait.com\/?p=25477"},"modified":"2026-10-23T21:04:55","modified_gmt":"2026-10-23T13:04:55","slug":"plexiglass-vs-acrylic","status":"publish","type":"post","link":"https:\/\/www.sanait.com\/it\/plexiglass-vs-acrylic\/","title":{"rendered":"Plexiglass o acrilico: sono la stessa cosa?"},"content":{"rendered":"\n<!-- Standalone article: Plexiglass vs Acrylic. Paste into a WordPress Custom HTML block. 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margin: 0;\n  color: var(--sa-muted);\n  font-size: 0.88em;\n}\n\n.sa-guide .sa-src h2 {\n  margin-top: 1.6em;\n}\n\n.sa-guide .sa-src-list {\n  font-size: 0.88em;\n  color: var(--sa-muted);\n}\n\n.sa-guide .sa-src-list li {\n  margin: 0 0 8px;\n}\n\n.sa-guide .sa-related {\n  margin: 0 0 8px;\n}\n\n.sa-guide .sa-related ul {\n  margin-bottom: 0;\n}\n\n.sa-guide .sa-meta {\n  font-size: 13px;\n  color: var(--sa-muted);\n  margin: 0 0 18px;\n}\n\n<\/style>\n<div class=\"sa-guide\">\n  <div class=\"sa-wrap\">\n\n    <p class=\"sa-kicker\">\n      <span class=\"sa-chip\">Material guide<\/span>\n      <span>Names<\/span>\n    <\/p>\n\n    <p class=\"sa-meta\">By David Deng \u00b7 R&#038;D manager, Sanait \u00b7 Updated October 2026<\/p>\n\n    <p class=\"sa-lede\">In ordinary buying language, plexiglass and acrylic are the same family of plastic: PMMA. Plexiglass is a trade name that became the common word. It is not a different material, and it is not glass. The useful distinction is not the nickname. It is cast versus extruded, and acrylic versus polycarbonate.<\/p>\n\n    <aside class=\"sa-takeaway\" aria-label=\"Key takeaways\">\n      <h2>Key takeaways<\/h2>\n      <ul>\n        <li>Acrylic is the material: poly(methyl methacrylate), PMMA.<\/li>\n        <li>Plexiglass (also written Plexiglas) is a brand name for acrylic sheet that people use as a generic word.<\/li>\n        <li>Perspex and Lucite are other acrylic trade names. They are not different plastics.<\/li>\n        <li>A sheet sold as \u201cplexiglass\u201d can still be cast or extruded. The nickname does not say which.<\/li>\n        <li>Plexiglass is not Lexan. Lexan is a polycarbonate trade name.<\/li>\n        <li>On a drawing, write PMMA or acrylic, plus cast or extruded. Do not write only \u201cplexiglass.\u201d<\/li>\n      <\/ul>\n    <\/aside>\n\n    <nav class=\"sa-toc\" aria-label=\"On this page\">\n      <h2>On this page<\/h2>\n      <ol>\n        <li><a href=\"#answer\">The short answer<\/a><\/li>\n        <li><a href=\"#names\">The names, sorted<\/a><\/li>\n        <li><a href=\"#not-glass\">Why it is not glass<\/a><\/li>\n        <li><a href=\"#not-pc\">Why it is not polycarbonate<\/a><\/li>\n        <li><a href=\"#cast-extruded\">What the nickname leaves out<\/a><\/li>\n        <li><a href=\"#specify\">What to write instead<\/a><\/li>\n        <li><a href=\"#faq\">FAQ<\/a><\/li>\n        <li><a href=\"#sources\">Sources<\/a><\/li>\n      <\/ol>\n    <\/nav>\n\n    <h2 id=\"answer\">The short answer<\/h2>\n\n    <div class=\"sa-def\">\n      <p><strong>Working answer.<\/strong> Yes, in the way buyers use the words: plexiglass means acrylic. No, as a specification: plexiglass is a trademark used as a generic, and it does not state grade, cast or extruded, thickness, or finish.<\/p>\n    <\/div>\n\n    <p>If a quote says \u201cplexiglass\u201d and another says \u201cacrylic,\u201d do not treat them as two materials until you have asked. Ask whether both are PMMA, and whether each is cast or extruded.<\/p>\n\n    <h2 id=\"names\">The names, sorted<\/h2>\n\n    <div class=\"sa-table-wrap\">\n      <table>\n        <caption>What the words usually refer to<\/caption>\n        <thead>\n          <tr>\n            <th scope=\"col\">Word<\/th>\n            <th scope=\"col\">What it is<\/th>\n            <th scope=\"col\">What it does not tell you<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <th scope=\"row\">Acrylic<\/th>\n            <td>The common name for PMMA sheet and parts<\/td>\n            <td>Cast or extruded, grade, thickness<\/td>\n          <\/tr>\n          <tr>\n            <th scope=\"row\">PMMA<\/th>\n            <td>The polymer name: poly(methyl methacrylate)<\/td>\n            <td>How the sheet was made<\/td>\n          <\/tr>\n          <tr>\n            <th scope=\"row\">Plexiglass \/ Plexiglas<\/th>\n            <td>A trade name for acrylic, widely used as the generic word<\/td>\n            <td>Whether this sheet is that brand, or cast vs extruded<\/td>\n          <\/tr>\n          <tr>\n            <th scope=\"row\">Perspex<\/th>\n            <td>Another acrylic trade name, common in some markets<\/td>\n            <td>Grade and process<\/td>\n          <\/tr>\n          <tr>\n            <th scope=\"row\">Lucite<\/th>\n            <td>Another acrylic trade name<\/td>\n            <td>Grade and process<\/td>\n          <\/tr>\n          <tr>\n            <th scope=\"row\">Lexan<\/th>\n            <td>A polycarbonate trade name \u2014 a different plastic<\/td>\n            <td>Not an acrylic nickname<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <p>Spelling varies. Plexiglas is the branded form buyers meet on mill sheets. Plexiglass is the common English spelling in emails and search. Treat them as the same request until the sender says otherwise, then confirm the polymer.<\/p>\n\n    <h2 id=\"not-glass\">Why it is not glass<\/h2>\n\n    <p>The \u201cglass\u201d in the nickname is historical. Acrylic was sold as a lighter, shatter-resistant alternative for glazing. The material is still a plastic. It can be polished to a clear face. It is not silica glass, it does not have a glass-hard surface, and a case made from it is an acrylic fabrication, not a glazed window.<\/p>\n\n    <p>Calling it plexiglass on a purchase order does not make the breakage behavior, the scratch behavior, or the weight into glass. Those stay PMMA behaviors, and they still depend on grade and thickness.<\/p>\n\n    <h2 id=\"not-pc\">Why it is not polycarbonate<\/h2>\n\n    <p>The mix-up that causes real orders to go wrong is plexiglass versus Lexan, or \u201cplexiglass\u201d versus polycarbonate. Both can be clear sheet. They are different polymers.<\/p>\n\n    <ul>\n      <li>Acrylic (plexiglass in common speech) is the usual choice for a brand-facing display: cubes, trays, polished edges.<\/li>\n      <li>Polycarbonate is the usual choice when the part may be hit.<\/li>\n      <li>Fabrication does not transfer. Solvent bonding and edge polish that are normal on cast acrylic are not a default on polycarbonate.<\/li>\n    <\/ul>\n\n    <p>If the email says \u201cplexiglass or Lexan, whichever is cheaper,\u201d stop and split the brief. Cheaper here is often a different material, not a discount.<\/p>\n\n    <h2 id=\"cast-extruded\">What the nickname leaves out<\/h2>\n\n    <p>Two sheets both called plexiglass can be cast or extruded. That difference is the one a display buyer feels: edge polish, solvent joints, thickness tolerance, and price. The nickname does not record it.<\/p>\n\n    <p>ISO 7823-1 covers cast PMMA sheet. ISO 7823-2 covers extruded PMMA sheet. Citing either standard still requires the seller to say which sheet this order uses. \u201cPlexiglass to ISO 7823\u201d without a part number is incomplete.<\/p>\n\n    <h2 id=\"specify\">What to write instead<\/h2>\n\n    <p>On the RFQ and the drawing, replace the nickname with four fields:<\/p>\n    <ol>\n      <li>Polymer: PMMA \/ acrylic.<\/li>\n      <li>Route: cast or extruded.<\/li>\n      <li>Thickness by member, and colorless or tint.<\/li>\n      <li>Edge finish and joint method, if the part is a case or a stand.<\/li>\n    <\/ol>\n\n    <p>You can add \u201calso called plexiglass\u201d in the email so a buyer and a factory are talking about the same thing. Do not leave it as the only material line.<\/p>\n\n    <p>Sanait builds custom acrylic displays, boxes, and trays \u2014 PMMA, in the sense above. A brief that says only \u201cplexiglass\u201d will be read as acrylic unless you say polycarbonate. Intake is on the <a href=\"https:\/\/www.sanait.com\/faq\/\">FAQ<\/a>. Scope is on the <a href=\"https:\/\/www.sanait.com\/about-us\/\">about page<\/a>. Typical parts: <a href=\"https:\/\/www.sanait.com\/custom-acrylic-boxes\/\">boxes<\/a>, <a href=\"https:\/\/www.sanait.com\/custom-acrylic-trays\/\">trays<\/a>, and <a href=\"https:\/\/www.sanait.com\/\">stands<\/a>.<\/p>\n\n    <h2 id=\"faq\">FAQ<\/h2>\n\n    <div class=\"sa-faq\">\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">Are plexiglass and acrylic the same?<\/h3>\n        <p class=\"sa-faq-a\">In common use, yes: both mean PMMA. Plexiglass is a trade name used as a generic. It is not a second plastic.<\/p>\n      <\/div>\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">Is plexiglass a brand?<\/h3>\n        <p class=\"sa-faq-a\">Yes. Plexiglas is a registered acrylic brand. Everyday writing often spells it plexiglass and means any acrylic sheet. A quote should still say whether the sheet is that brand or a generic PMMA.<\/p>\n      <\/div>\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">Is Perspex the same as plexiglass?<\/h3>\n        <p class=\"sa-faq-a\">Both are acrylic trade names. Same polymer family. Not automatically the same grade, thickness, or cast-versus-extruded route.<\/p>\n      <\/div>\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">Is plexiglass the same as Lexan?<\/h3>\n        <p class=\"sa-faq-a\">No. Lexan is polycarbonate. Plexiglass, in ordinary speech, is acrylic. Clear sheet is not enough to tell them apart on a photo.<\/p>\n      <\/div>\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">Is plexiglass glass?<\/h3>\n        <p class=\"sa-faq-a\">No. The name is a nickname. The material is PMMA plastic.<\/p>\n      <\/div>\n      <div class=\"sa-faq-item\">\n        <h3 class=\"sa-faq-q\">What should I put on the drawing?<\/h3>\n        <p class=\"sa-faq-a\">Acrylic or PMMA, cast or extruded, thickness, and finish. Add \u201cplexiglass\u201d only as a plain-language note if your team uses that word.<\/p>\n      <\/div>\n    <\/div>\n\n    <div class=\"sa-author\" id=\"author\">\n      <h2>About the author<\/h2>\n      <p class=\"sa-author-name\">David Deng<\/p>\n      <p class=\"sa-author-role\">R&#038;D manager at Sanait. 10+ years in acrylic fabrication; 2,000+ custom acrylic projects shipped across 20+ countries.<\/p>\n      <p>Sanait Co., Ltd. fabricates custom acrylic displays in Dongguan. The name guide above is general. Plant terms are on the <a href=\"https:\/\/www.sanait.com\/faq\/\">FAQ<\/a>. Background is on the <a href=\"https:\/\/www.sanait.com\/about-us\/\">about page<\/a>.<\/p>\n    <\/div>\n\n    <div class=\"sa-related\">\n      <h2>Factory pages<\/h2>\n      <ul>\n        <li><a href=\"https:\/\/www.sanait.com\/faq\/\">Custom acrylic FAQ<\/a><\/li>\n        <li><a href=\"https:\/\/www.sanait.com\/about-us\/\">About Sanait<\/a><\/li>\n        <li><a href=\"https:\/\/www.sanait.com\/custom-acrylic-boxes\/\">Custom acrylic boxes<\/a><\/li>\n        <li><a href=\"https:\/\/www.sanait.com\/custom-acrylic-trays\/\">Custom acrylic trays<\/a><\/li>\n        <li><a href=\"https:\/\/www.sanait.com\/\">Custom display stands<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <section class=\"sa-src\" id=\"sources\">\n      <h2>Sources<\/h2>\n      <p>Names below are identified from the polymer and from public reference entries. A trade name on a mill sheet is confirmed by that mill, not by this page.<\/p>\n      <ol class=\"sa-src-list\">\n        <li>ISO 7823-1:2003, <em>Plastics \u2014 Poly(methyl methacrylate) sheets \u2014 Part 1: Cast sheets<\/em>. <a href=\"https:\/\/www.iso.org\/standard\/33450.html\" rel=\"nofollow noopener\" target=\"_blank\">iso.org<\/a><\/li>\n        <li>ISO 7823-2:2003, <em>Plastics \u2014 Poly(methyl methacrylate) sheets \u2014 Part 2: Extruded sheets<\/em>. <a href=\"https:\/\/www.iso.org\/standard\/33451.html\" rel=\"nofollow noopener\" target=\"_blank\">iso.org<\/a><\/li>\n        <li>\u201cPoly(methyl methacrylate).\u201d <em>Wikipedia<\/em>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Poly(methyl_methacrylate)\" rel=\"nofollow noopener\" target=\"_blank\">en.wikipedia.org<\/a><\/li>\n        <li>\u201cPlexiglas.\u201d <em>Wikipedia<\/em>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Plexiglas\" rel=\"nofollow noopener\" target=\"_blank\">en.wikipedia.org<\/a><\/li>\n      <\/ol>\n    <\/section>\n\n  <\/div>\n<\/div>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Article\",\n      \"headline\": \"Plexiglass vs Acrylic: Are They the Same?\",\n      \"description\": \"In common use, plexiglass means acrylic (PMMA). 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Plexiglass, in ordinary speech, is acrylic.\"}\n        }\n      ]\n    }\n  ]\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-25477","post","type-post","status-publish","format-standard","hentry","category-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Plexiglass vs Acrylic: Same Plastic, Different Name<\/title>\n<meta name=\"description\" content=\"Plexiglass and acrylic are the same plastic in common use: PMMA. The name is a trademark, not glass or polycarbonate. Specify cast or extruded on the drawing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sanait.com\/it\/plexiglass-vs-acrylic\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plexiglass vs Acrylic: Same Plastic, Different Name\" \/>\n<meta property=\"og:description\" content=\"Plexiglass and acrylic are the same plastic in common use: PMMA. The name is a trademark, not glass or polycarbonate. 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