{"id":2641,"date":"2026-06-10T15:00:04","date_gmt":"2026-06-10T15:00:04","guid":{"rendered":"https:\/\/rheonova.com\/?post_type=glossary&#038;p=2641"},"modified":"2026-09-03T10:26:45","modified_gmt":"2026-09-03T10:26:45","slug":"extrusion-swelling-die-swell","status":"publish","type":"glossary","link":"https:\/\/rheonova.com\/en\/glossaire\/extrusion-swelling-die-swell\/","title":{"rendered":"Extrusion swelling (die swell)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A phenomenon in which a molten polymer swells as it exits an extrusion die due to its elasticity. The extent of the swelling depends on the viscoelastic properties and process conditions. Measured by capillary rheology, it is critical for the design of extrusion and blow molding dies.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A phenomenon in which a molten polymer swells as it exits an extrusion die due to its elasticity. The extent of the swelling depends on the viscoelastic properties and process conditions. Measured by capillary rheology, it is critical for the design of extrusion and blow molding dies.<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"footnotes":""},"class_list":["post-2641","glossary","type-glossary","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Extrusion swelling (die swell) - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova<\/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:\/\/rheonova.com\/en\/glossaire\/extrusion-swelling-die-swell\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Extrusion swelling (die swell) - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova\" \/>\n<meta property=\"og:description\" content=\"A phenomenon in which a molten polymer swells as it exits an extrusion die due to its elasticity. The extent of the swelling depends on the viscoelastic properties and process conditions. Measured by capillary rheology, it is critical for the design of extrusion and blow molding dies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rheonova.com\/en\/glossaire\/extrusion-swelling-die-swell\/\" \/>\n<meta property=\"og:site_name\" content=\"Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-03T10:26:45+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/glossaire\\\/extrusion-swelling-die-swell\\\/\",\"url\":\"https:\\\/\\\/rheonova.com\\\/en\\\/glossaire\\\/extrusion-swelling-die-swell\\\/\",\"name\":\"Extrusion swelling (die swell) - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#website\"},\"datePublished\":\"2026-06-10T15:00:04+00:00\",\"dateModified\":\"2026-09-03T10:26:45+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/glossaire\\\/extrusion-swelling-die-swell\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rheonova.com\\\/en\\\/glossaire\\\/extrusion-swelling-die-swell\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/glossaire\\\/extrusion-swelling-die-swell\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/rheonova.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Extrusion swelling (die swell)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/rheonova.com\\\/en\\\/\",\"name\":\"Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/rheonova.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#organization\",\"name\":\"Rheonova\",\"alternateName\":\"Rheonova \u2014 Laboratoire d'analyse en rh\u00e9ologie\",\"url\":\"https:\\\/\\\/rheonova.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/rheonova.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/logo-rheonova-colors.png\",\"contentUrl\":\"https:\\\/\\\/rheonova.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/logo-rheonova-colors.png\",\"width\":450,\"height\":89,\"caption\":\"Rheonova\"},\"image\":{\"@id\":\"https:\\\/\\\/rheonova.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Extrusion swelling (die swell) - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/rheonova.com\/en\/glossaire\/extrusion-swelling-die-swell\/","og_locale":"en_US","og_type":"article","og_title":"Extrusion swelling (die swell) - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova","og_description":"A phenomenon in which a molten polymer swells as it exits an extrusion die due to its elasticity. 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