{"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\/ja\/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 ExxonMobil Santoprene 121-67W175 (Glass Run Channel) 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. Medical & Food Contact \u2022 ExxonMobil Santoprene 8211-75 \u2022 Teknor Apex Sarlink ME-2255 USP Class VI and FDA compliant. Low extractables […]<\/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\/ja\/wp-json\/wp\/v2\/material\/2339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media\/2411"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media?parent=2339"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/material_type?post=2339"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/application_feature?post=2339"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/machining_process?post=2339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}