{"id":2339,"date":"2026-05-21T16:33:23","date_gmt":"2026-05-21T08:33:23","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2339"},"modified":"2026-06-30T17:10:04","modified_gmt":"2026-06-30T09:10:04","slug":"thermoplastic-vulcanizate-tpv","status":"publish","type":"material","link":"https:\/\/www.jcinjectionmolding.com\/ko\/materials\/thermoplastic-vulcanizate-tpv\/","title":{"rendered":"Thermoplastic Vulcanizate (TPV)"},"content":{"rendered":"
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Leading TPV Brands & Specific Grades We Mold<\/h2>\n

We process high-performance Thermoplastic Vulcanizate resins from global market leaders, offering excellent compression set and continuous outdoor weatherability:<\/p>\n\n\n\n\n\n\n
TPV Material Sub-Class<\/th>\nTypical Brand & Grade<\/th>\nKey Characteristics & Advantages<\/th>\n<\/tr>\n<\/thead>\n
General Purpose & Automotive<\/td>\n\u2022 ExxonMobil Santoprene 101-55 \/ 101-73
\n\u2022 Teknor Apex Sarlink 3140 \/ 3180
\n\u2022 ExxonMobil Santoprene 121-67W175 (Glass Run Channel)<\/td>\n		Highly resistant to ozone, UV radiation, and extreme temperatures. Excellent low compression set at high temperatures. Designed for automotive glass run channels, engine air ducts, and weather seals.<\/td>\n<\/tr>\n
Medical & Food Contact<\/td>\n\u2022 ExxonMobil Santoprene 8211-75
\n\u2022 Teknor Apex Sarlink ME-2255<\/td>\n		USP Class VI and FDA compliant. Low extractables and excellent seal integrity. Perfect for peristaltic pump tubing, medical gaskets, and pharmaceutical vial closures.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Applicable Molding Processes for TPV<\/h2>\n

TPV’s high non-Newtonian flow properties support highly specialized molding configurations:<\/p>\n\n\n\n\n\n\n
Molding Process<\/th>\nProcess Suitability & Application<\/th>\n<\/tr>\n<\/thead>\n
Overmolding (Multi-Shot)<\/td>\nExcellent. LCP\/PP-compatible TPV grades easily overmold onto polypropylene (PP) substrates to form permanent, weather-resistant structural seals in automotive door panels.<\/td>\n<\/tr>\n
Standard Injection Molding<\/td>\nExcellent. Optimized for high-speed cycle times to produce stand-alone heavy-duty expansion joints, dynamic seals, and plumbing gaskets.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Thermoplastic Vulcanizate (TPV) Tooling & Processing Guide<\/h2>\n

TPV consists of cross-linked EPDM rubber dispersed inside a PP matrix. It exhibits strong shear-thinning behavior, which requires specialized manufacturing parameters to prevent cosmetic flow lines:<\/p>\n

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  • Pre-Drying:<\/strong> TPV is highly hygroscopic (especially EPDM phases). Raw resin must be dried in desiccant dryers at 80\u00b0C\u201390\u00b0C (176\u00b0F to 194\u00b0F) for 3\u20134 hours, keeping moisture strictly below 0.08% to prevent bubbling and weld line separation.<\/li>\n
  • Shear-Thinning Gate Design:<\/strong> TPV is non-Newtonian; its viscosity decreases drastically under high shear. Our in-house tooling division uses 5-axis CNC machines to cut generous gate channels and wide runners. This reduces shear stress and prevents visible flow line defects.<\/li>\n
  • Temperature Controls:<\/strong> Melt temperatures are kept at 180\u00b0C\u2013220\u00b0C (356\u00b0F to 428\u00b0F), and mold temperatures are managed cold at 20\u00b0C\u201350\u00b0C (68\u00b0F to 122\u00b0F) to ensure fast cycle times and prevent mold sticking.<\/li>\n
  • Shrinkage:<\/strong> TPV exhibits high and anisotropic shrinkage (typically 1.5% to 2.5%). Our engineers analyze EPDM dispersion flow paths using DFM software to adjust mold tolerances precisely.<\/li>\n<\/ul>\n<\/section>\n

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    Key Application Industries for Molded TPV Components<\/h2>\n
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    • Automotive Sealing Systems (IATF 16949 Certified):<\/strong> Glass run channels, weatherstripping seals, engine air ducts, flexible under-the-hood boots, rack-and-pinion bellows, and expansion joints.<\/li>\n
    • Plumbing & Fluid Systems:<\/strong> Drinking water gaskets, chemical pump diaphragms, flexible pipe seals, and wastewater sealing couplings.<\/li>\n
    • Medical & Food Service (ISO 13485 Compliant):<\/strong> Peristaltic pump tubing connector gaskets, medical device handles, sterilizer door seals, and baby product valves.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Leading TPV Brands & Specific Grades We Mold We process high-performance Thermoplastic Vulcanizate resins from global market leaders, offering excellent compression set and continuous outdoor weatherability: TPV Material Sub-Class Typical Brand & Grade Key Characteristics & Advantages General Purpose & Automotive \u2022 ExxonMobil Santoprene 101-55 \/ 101-73 \u2022 Teknor Apex Sarlink 3140 \/ 3180 \u2022 […]<\/p>\n","protected":false},"featured_media":2411,"template":"","meta":[],"material_type":[19],"application_feature":[],"machining_process":[],"class_list":["post-2339","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-thermoplastic-elastomers-tpe-tpu"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/material\/2339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media\/2411"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media?parent=2339"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/material_type?post=2339"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/application_feature?post=2339"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/machining_process?post=2339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}