{"id":2704,"date":"2026-07-28T11:20:52","date_gmt":"2026-07-28T03:20:52","guid":{"rendered":"http:\/\/0"},"modified":"2026-07-24T17:56:07","modified_gmt":"2026-07-24T09:56:07","slug":"ev-custom-molding-thermoplastic-vulcanizate-tpv-battery-gaskets","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/ko\/blog\/ev-custom-molding-thermoplastic-vulcanizate-tpv-battery-gaskets\/","title":{"rendered":"EV \ub9de\ucda4\ud615 \ubab0\ub529 \uc5f4\uac00\uc18c\uc131 \uac00\ud669\ubb3c(TPV) \ubc30\ud130\ub9ac \uac1c\uc2a4\ud0b7"},"content":{"rendered":"<article style=\"font-family: -apple-system, BlinkMacSystemFont, &#039;Segoe UI&#039;, Roboto, Helvetica, Arial, sans-serif;color: #333333;width: 100%\">\n<section style=\"margin-bottom: 30px\">\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Automotive battery packs require robust environmental seals to prevent water, dust, and glycol coolant ingress. Ingress protection ratings of IP67 and IP69K are mandatory to safeguard high-voltage electronics from short circuits. Selecting elastomeric materials that maintain physical elasticity under constant compressive loads remains a key design challenge. This technical blog compares thermoplastic elastomers with thermoset rubbers, detailing overmolding processes and sealing performance.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2706\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/dual-shot-injection-molding.webp\" alt=\"dual-shot-injection-molding\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/dual-shot-injection-molding.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/dual-shot-injection-molding-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/dual-shot-injection-molding-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/dual-shot-injection-molding-768x429.webp 768w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/p>\n<\/section>\n<p><!-- Table of Contents --><\/p>\n<section style=\"background-color: #f8f9fa;border-left: 4px solid #0056b3;padding: 24px;border-radius: 6px;margin: 40px 0\">\n<h3 style=\"font-size: 22px;font-weight: bold;line-height: 1.5em;margin-top: 0;margin-bottom: 16px;color: #111111\">\ubaa9\ucc28<\/h3>\n<ul style=\"list-style-type: none;padding-left: 0;margin: 0\">\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#tpv-vs-epdm\">1. TPV vs. EPDM: Why Santoprene is the Ideal Choice for EV Seals<\/a><\/li>\n<li style=\"margin-bottom: 0\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#two-shot-molding\">2. Two-Shot molding &amp; Overmolding of Custom TPV Gaskets<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- Section 1 --><\/p>\n<section id=\"tpv-vs-epdm\" style=\"margin-bottom: 50px\">\n<h2 style=\"font-size: 28px;line-height: 1.5em;font-weight: bold;margin-top: 40px;margin-bottom: 24px;color: #111111;border-bottom: 1px solid #eaeaea;padding-bottom: 8px\">TPV vs. EPDM: Why Santoprene is the Ideal Choice for EV Seals<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2708\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/testing-tpv-rubber-seal.webp\" alt=\"testing-tpv-rubber-seal\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/testing-tpv-rubber-seal.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/testing-tpv-rubber-seal-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/testing-tpv-rubber-seal-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/testing-tpv-rubber-seal-768x429.webp 768w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Achieving airtight seal reliability in electric vehicle (EV) battery packs relies heavily on <strong>custom molding thermoplastic vulcanizate TPV battery gaskets<\/strong> rather than using traditional thermoset rubbers. EPDM has been the industry standard for industrial sealing for decades. However, processing EPDM requires long curing cycles inside the mold, limiting production throughput. Comparing long-term performance metrics proves why <strong>custom molding thermoplastic vulcanizate TPV battery gaskets<\/strong> outperform conventional EPDM seals in modern automated pack designs.<\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">TPV combines the processing ease of thermoplastics with the elastic recovery of vulcanized rubber. Key performance advantages of Santoprene TPV over EPDM include:<\/p>\n<p><!-- Bulleted List --><\/p>\n<ul style=\"font-size: 18px;line-height: 1.8em;margin-bottom: 24px;padding-left: 24px;list-style-type: disc\">\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Compression set<\/strong>\u2014TPV retains its elastic recovery under continuous structural load, preventing seal gaps from forming over long vehicular lifetimes.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Processing speed<\/strong>\u2014Thermoplastic cycle times are up to ten times faster than curing-dependent thermoset EPDM, which maximizes daily output.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Chemical compatibility<\/strong>\u2014\uc0c1\ud1a4\ud504\ub80c(Santoprene) \ub4f1\uae09\uc740 \uace0\uc804\uc555 \uc5f4 \uc2dc\uc2a4\ud15c\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uae00\ub9ac\ucf5c-\ubb3c \ub0c9\uac01\uc218\uc5d0 \ub178\ucd9c\ub420 \ub54c \ud33d\uc724\uc5d0 \uc800\ud56d\ud569\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uc7ac\ud65c\uc6a9\uc131<\/strong>\u2014\uc2a4\ud06c\ub7a9 \uc7ac\ub8cc\ub294 \uc7ac\ubd84\uc1c4 \ubc0f \uac00\uacf5\ub418\uc5b4 \ud658\uacbd \ubc1c\uc790\uad6d\uacfc \uc81c\uc870 \ud3d0\uae30\ubb3c\uc744 \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\uacbd\ud654 \uc2dc\uac04\uc744 \uc81c\uac70\ud558\uba74 \uac00\uacf5 \uc5d4\uc9c0\ub2c8\uc5b4\uac00 \uc0ac\uc774\ud074 \uc2dc\uac04\uc744 30~45\ucd08\ub85c \ucd5c\uc801\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f4\uacbd\ud654\uc131 \uace0\ubb34\ub294 \uc0f7\ub2f9 \uba87 \ubd84\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc5b4 \uae08\ud615 \ubc0f \uae30\uacc4 \ube44\uc6a9\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uace0\uc131\ub2a5 \uc5d8\ub77c\uc2a4\ud1a0\uba38\ub97c \uc120\ud0dd\ud558\uba74 \ube44\ubc18\ubcf5 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ube44\uc6a9\uc774 \uc808\uac10\ub429\ub2c8\ub2e4.<\/p>\n<\/section>\n<p><!-- Section 2 --><\/p>\n<section id=\"two-shot-molding\" style=\"margin-bottom: 50px\">\n<h2 style=\"font-size: 28px;line-height: 1.5em;font-weight: bold;margin-top: 40px;margin-bottom: 24px;color: #111111;border-bottom: 1px solid #eaeaea;padding-bottom: 8px\">\ub9de\ucda4\ud615 TPV \uac1c\uc2a4\ud0b7\uc758 2\uc0c9 \uc0ac\ucd9c \uc131\ud615 \ubc0f \uc778\uc11c\ud2b8 \uc0ac\ucd9c \uc131\ud615<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2705\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/tpv-polyamide-overmolding-design.webp\" alt=\"tpv-polyamide-overmolding-design\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/tpv-polyamide-overmolding-design.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/tpv-polyamide-overmolding-design-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/tpv-polyamide-overmolding-design-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/tpv-polyamide-overmolding-design-768x429.webp 768w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\uad6c\ud604 <strong>custom molding thermoplastic vulcanizate TPV battery gaskets<\/strong> 2\uc0c9 \uc0ac\ucd9c \uc131\ud615\uc744 \ud1b5\ud55c \uad6c\ud604\uc740 \uc218\ub3d9 \uac1c\uc2a4\ud0b7 \uc0bd\uc785\uc744 \uc81c\uac70\ud569\ub2c8\ub2e4. \uc218\ub3d9 \uc870\ub9bd\uc740 \uc885\uc885 \uc815\ub82c \uc624\ub958, \uad6d\ubd80\uc801 \uc530 \uaf2c\uc784 \ub610\ub294 \uc811\ucc29 \uc2e4\ud328\ub97c \uc720\ubc1c\ud569\ub2c8\ub2e4. \ub2e4\uc911 \uc0f7 \uc0ac\ucd9c \uc131\ud615(2K \uc131\ud615)\uc740 \ub2e8\uc77c \uae08\ud615 \ud234 \ub0b4\uc5d0\uc11c \uac15\uc131 \ud558\uc6b0\uc9d5 \uae30\ud310\uacfc \uc5d8\ub77c\uc2a4\ud1a0\uba38 \uc530\uc744 \ub3d9\uc2dc\uc5d0 \uc0ac\ucd9c\ud569\ub2c8\ub2e4. \uccab \ubc88\uc9f8 \uc0ac\ucd9c \uc0f7 \ub3d9\uc548 \uae30\uacc4\ub294 \uc720\ub9ac \ucda9\uc804 \ud3f4\ub9ac\uc544\ubbf8\ub4dc \ub610\ub294 PC\/ABS\ub85c \uac15\uc131 \ud504\ub808\uc784\uc744 \uc131\ud615\ud569\ub2c8\ub2e4. \uae30\ud310\uc774 \uace0\ud654\ub418\uba74 \uae08\ud615 \ud50c\ub798\ud2bc\uc774 \ud68c\uc804\ud558\uace0 \ub450 \ubc88\uc9f8 \uc0f7\uc774 TPV\ub97c \uc530\ub9c1 \uadf8\ub8e8\ube0c\uc5d0 \uc9c1\uc811 \uc0ac\ucd9c\ud569\ub2c8\ub2e4.<\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\ub450 \uc7ac\ub8cc\uac00 \ube60\ub974\uac8c \uc5f0\uc18d \uc131\ud615\ub418\uae30 \ub54c\ubb38\uc5d0 \uacc4\uba74\uc5d0\uc11c \ubd84\uc790 \uacb0\ud569\uc774 \ud615\uc131\ub429\ub2c8\ub2e4. \uc774 \ud654\ud559\uc801 \uc811\ucc29\uc740 \uace0\uc555 \ud329 \uc870\ub9bd \uc911 \uac1c\uc2a4\ud0b7\uc774 \ubc97\uaca8\uc9c0\uac70\ub098 \uc774\ub3d9\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uacac\uace0\ud55c \uacb0\ud569\uc744 \ub2ec\uc131\ud558\ub824\uba74 \uac00\uacf5 \ub9e4\uac1c\ubcc0\uc218\ub97c \uc815\ubc00\ud558\uac8c \uc81c\uc5b4\ud574\uc57c \ud569\ub2c8\ub2e4:<\/p>\n<p><!-- Numbered List --><\/p>\n<ol style=\"font-size: 18px;line-height: 1.8em;margin-bottom: 24px;padding-left: 24px;list-style-type: decimal\">\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uae30\ud310 \uc628\ub3c4 \uc81c\uc5b4<\/strong>\u2014\uac15\uc131 \ud558\uc6b0\uc9d5 \uae30\ud310\uc744 \uc720\ub9ac \uc804\uc774 \uc628\ub3c4 \uc774\uc0c1\uc73c\ub85c \uc720\uc9c0\ud558\uba74 TPV \uc0ac\uc2ac\uc774 \uacc4\uba74\uc5d0\uc11c \uc0c1\ud638 \ud655\uc0b0\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\ud68c\uc804 \ud50c\ub798\ud2bc \uc815\ub82c<\/strong>\u2014\uae08\ud615 \ucf54\uc5b4\ub97c \uc11c\ube0c\ubc00\ub9ac\ubbf8\ud130 \uc815\ubc00\ub3c4\ub85c \ud68c\uc804\uc2dc\ud0a4\uba74 \uae08\ud615 \uc167\uc624\ud504 \ubd88\uc77c\uce58\ub97c \ubc29\uc9c0\ud558\uc5ec \ud50c\ub798\uc2f1\uc744 \uc81c\uac70\ud569\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uacc4\uba74 \uacb0\ud569 \uc18d\ub3c4<\/strong>\u2014\uae30\ud310\uc774 \uace0\ud654\ub41c \uc9c1\ud6c4 TPV\ub97c \uc0ac\ucd9c\ud558\uba74 \uc751\uc9d1\uc131 \uacc4\uba74 \uc6a9\uc811\uc774 \uc0dd\uc131\ub429\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uc167\uc624\ud504 \uc530 \uc555\ub825<\/strong>\u2014Clamping the elastomer mold faces with sufficient pressure prevents the low-viscosity TPV melt from spilling.<\/li>\n<\/ol>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Applying high-precision <strong>custom molding thermoplastic vulcanizate TPV battery gaskets<\/strong> ensures that our <strong>EV\uc6a9 \ub9de\ucda4\ud615 \ud50c\ub77c\uc2a4\ud2f1 \ubc30\ud130\ub9ac \ud558\uc6b0\uc9d5<\/strong> achieve IP67 environmental sealing to pass testing. By combining precision tooling with IATF 16949-certified quality systems, JUCHENG delivers a reliable manufacturing path. Our engineering group provides comprehensive DfM reviews within 24 hours to optimize your structural component designs.<\/p>\n<\/section>\n<p><!-- Section 5: FAQ --><\/p>\n<section id=\"faq\" style=\"margin-bottom: 40px\">\n<h2 style=\"font-size: 28px;line-height: 1.5em;font-weight: bold;margin-top: 40px;margin-bottom: 24px;color: #111111;border-bottom: 1px solid #eaeaea;padding-bottom: 8px\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38 (FAQ)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2707\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/ip69k-water-jet-test.webp\" alt=\"ip69k-water-jet-test\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/ip69k-water-jet-test.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/ip69k-water-jet-test-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/ip69k-water-jet-test-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/ip69k-water-jet-test-768x429.webp 768w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/p>\n<div style=\"margin-bottom: 30px\">\n<h3 style=\"font-size: 22px;line-height: 1.5em;font-weight: bold;margin-top: 24px;margin-bottom: 12px;color: #111111\">What is the typical compression set recovery of TPV at elevated temperatures?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">TPV grades like Santoprene exhibit excellent compression set resistance, typically retaining over 75% of their elastic recovery after continuous exposure to 100\u00b0C. Thermoset EPDM behaves similarly, but TPV achieves this physical recovery without requiring chemical vulcanization cycles inside the injection tool. This permanent elasticity prevents the seal from relaxing over years of vehicular operation, maintaining robust ingress protection.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px\">\n<h3 style=\"font-size: 22px;line-height: 1.5em;font-weight: bold;margin-top: 24px;margin-bottom: 12px;color: #111111\">How do you achieve strong chemical adhesion between TPV and polyamide substrates?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Selecting the correct adhesion-modified TPV grade is critical to ensure compatibility with polar substrates like glass-filled nylon. Regular TPV does not bond chemically with polyamide without a primer or adhesive. Using specialized overmolding TPV grades allows polymer chains to interdiffuse at the melt interface during the second shot, creating a covalent bond that prevents peeling. Mold temperature control also plays a key role, as warm tool faces facilitate chain mobility.<\/p>\n<\/div>\n<div style=\"margin-bottom: 0\">\n<h3 style=\"font-size: 22px;line-height: 1.5em;font-weight: bold;margin-top: 24px;margin-bottom: 12px;color: #111111\">Can overmolded TPV gaskets survive high-pressure water jet washes (IP69K)?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Overmolded gaskets resist high-pressure water jets because they are physically locked inside precision-molded tongue-and-groove channels. Hand-applied foam or adhesive seals can peel off under dynamic water pressures, but overmolded elastomeric boundaries remain securely bonded. Designing deep mechanical interlocking features inside the rigid carrier further enhances the physical retention of the gasket, ensuring survival under IP69K test protocols.<\/p>\n<\/div>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Automotive battery packs require robust environmental seals to prevent water, dust, and glycol coolant ingress. Ingress protection ratings of IP67 and IP69K are mandatory to safeguard high-voltage electronics from short circuits. Selecting elastomeric materials that maintain physical elasticity under constant compressive loads remains a key design challenge. This technical blog compares thermoplastic elastomers with thermoset [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2709,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2704","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts\/2704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/comments?post=2704"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts\/2704\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media\/2709"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media?parent=2704"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/categories?post=2704"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/tags?post=2704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}