{"id":2755,"date":"2026-07-30T17:28:36","date_gmt":"2026-07-30T09:28:36","guid":{"rendered":"http:\/\/0"},"modified":"2026-07-29T17:42:12","modified_gmt":"2026-07-29T09:42:12","slug":"specs-for-overmolding-injection-molding-tpe-and-tpu-bonding","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/vi\/blog\/specs-for-overmolding-injection-molding-tpe-and-tpu-bonding\/","title":{"rendered":"Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho \u0110\u00fac phun ph\u1ee7 l\u1edbp: Li\u00ean k\u1ebft TPE v\u00e0 TPU"},"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\">S\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 ph\u1eadn ph\u1ea7n c\u1ee9ng c\u00f4ng th\u00e1i h\u1ecdc \u0111\u00f2i h\u1ecfi ph\u1ea3i k\u1ebft h\u1ee3p c\u00e1c ch\u1ea5t \u0111\u00e0n h\u1ed3i m\u1ec1m ch\u1ea1m v\u00e0o tr\u00ean c\u00e1c khung c\u1ea5u tr\u00fac c\u1ee9ng. L\u1eafp r\u00e1p c\u01a1 kh\u00ed truy\u1ec1n th\u1ed1ng s\u1eed d\u1ee5ng \u1ed1c v\u00edt ho\u1eb7c keo th\u1ee7 c\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed nh\u00e2n c\u00f4ng v\u00e0 t\u1ea1o ra c\u00e1c \u0111i\u1ec3m h\u1ecfng ti\u1ec1m \u1ea9n d\u01b0\u1edbi t\u1ea3i tr\u1ecdng m\u1ecfi theo chu k\u1ef3. Ch\u1ec9 \u0111\u1ecbnh <a href=\"https:\/\/www.jcinjectionmolding.com\/vi\/service\/overmolding-services\/\"><strong>\u00e9p ph\u1ee7 khu\u00f4n t\u00f9y ch\u1ec9nh<\/strong><\/a> t\u00edch h\u1ee3p c\u00e1c ch\u1ea5t \u0111\u00e0n h\u1ed3i m\u1ec1m tr\u1ef1c ti\u1ebfp l\u00ean n\u1ec1n nh\u1ef1a c\u1ee9ng ho\u1eb7c ch\u00e8n kim lo\u1ea1i trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd. JUCHENG ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t h\u1ee3p \u0111\u1ed3ng t\u00edch h\u1ee3p theo chi\u1ec1u d\u1ecdc cung c\u1ea5p c\u00e1c c\u1ee5m \u00e9p ph\u1ee7 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u1ef1c ti\u1ebfp t\u1eeb c\u00e1c t\u1ec7p CAD do kh\u00e1ch h\u00e0ng cung c\u1ea5p.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2757\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-insert-loading.webp\" alt=\"overmolding-insert-loading\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-insert-loading.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-insert-loading-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-insert-loading-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-insert-loading-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\">M\u1ee5c l\u1ee5c<\/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=\"#elastomer-selection\">1. L\u1ef1a ch\u1ecdn n\u1ec1n v\u00e0 ch\u1ea5t \u0111\u00e0n h\u1ed3i \u00e9p ph\u1ee7 (TPE, TPU, TPV)<\/a><\/li>\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#mold-design-techniques\">2. K\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf khu\u00f4n \u0111\u1ec3 ng\u0103n ng\u1eeba ba via v\u00e0 bong tr\u00f3c<\/a><\/li>\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#turnkey-applications\">3. V\u1ecf b\u1ecdc \u00e9p ph\u1ee7 c\u1ea7m tay y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p ch\u00eca kh\u00f3a trao tay<\/a><\/li>\n<li style=\"margin-bottom: 0\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#prototyping-scaling\">4. M\u1edf r\u1ed9ng quy m\u00f4 t\u1eeb t\u1ea1o m\u1eabu \u0111\u1ebfn s\u1ea3n xu\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- Section 1 --><\/p>\n<section id=\"elastomer-selection\" 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\">L\u1ef1a ch\u1ecdn n\u1ec1n v\u00e0 ch\u1ea5t \u0111\u00e0n h\u1ed3i \u00e9p ph\u1ee7 (TPE, TPU, TPV)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2762\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-elastomer-raw-materials.webp\" alt=\"overmolding-elastomer-raw-materials\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-elastomer-raw-materials.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-elastomer-raw-materials-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-elastomer-raw-materials-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-elastomer-raw-materials-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\">Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c k\u1ebft h\u1ee3p n\u1ec1n v\u00e0 ch\u1ea5t \u0111\u00e0n h\u1ed3i t\u01b0\u01a1ng th\u00edch quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n li\u00ean k\u1ebft h\u00f3a h\u1ecdc v\u00e0 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a c\u1ee5m l\u1eafp r\u00e1p. N\u1ec1n c\u1ee9ng th\u01b0\u1eddng bao g\u1ed3m c\u00e1c lo\u1ea1i nh\u1ef1a k\u1ef9 thu\u1eadt nh\u01b0 <a href=\"https:\/\/www.jcinjectionmolding.com\/vi\/materials\/\"><strong>ABS, polycarbonate (PC), PA6\/PA66, ho\u1eb7c h\u1ee3p kim PC\/ABS<\/strong><\/a> . Vi\u1ec7c kh\u1edbp nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn d\u1ea1ng nhi\u1ec7t c\u1ee7a n\u1ec1n v\u1edbi nh\u1ef1a \u00e9p ph\u1ee7 ng\u0103n ng\u1eeba n\u00f3ng ch\u1ea3y ho\u1eb7c bi\u1ebfn d\u1ea1ng nhi\u1ec7t trong l\u1ea7n phun th\u1ee9 hai. C\u00e1c l\u1edbp \u0111\u00e0n h\u1ed3i \u00e9p ph\u1ee7 s\u1eed d\u1ee5ng c\u00e1c c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t cao bao g\u1ed3m <strong>Santoprene TPV<\/strong>, <strong>Kraiburg TPE<\/strong>, v\u00e0 <strong>Desmopan TPU<\/strong> \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c c\u1ea5u h\u00ecnh \u0111\u1ed9 c\u1ee9ng Shore t\u00f9y ch\u1ec9nh.<\/p>\n<p><!-- Table 1: Elastomer Comparison Table --><\/p>\n<div style=\"margin: 32px 0\">\n<table style=\"width: 100%;border-collapse: collapse;font-size: 16px;text-align: left;min-width: 600px\">\n<thead>\n<tr style=\"background-color: #f8f9fa;border-bottom: 2px solid #dee2e6\">\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">C\u1ea5p \u0111\u1ed9 \u0111\u00e0n h\u1ed3i<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u0110\u1ed9 c\u1ee9ng Shore<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">Ch\u1ea5t n\u1ec1n t\u01b0\u01a1ng th\u00edch<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">Lo\u1ea1i li\u00ean k\u1ebft<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u1ee8ng d\u1ee5ng ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Kraiburg TPE<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">30A \u2013 90A<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">ABS, PC, PC\/ABS<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Li\u00ean k\u1ebft h\u00f3a h\u1ecdc<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Tay c\u1ea7m m\u1ec1m ti\u1ec7n d\u1ee5ng<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Desmopan TPU<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">60A \u2013 70D<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">PC, PA6\/PA66<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Khu\u1ebfch t\u00e1n c\u01b0\u1eddng \u0111\u1ed9 cao<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Tay c\u1ea7m c\u00f4ng nghi\u1ec7p ch\u1ed1ng m\u00e0i m\u00f2n<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Santoprene TPV<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">50A &#8211; 50D<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">PP, PA66-GF<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">H\u00f3a h\u1ecdc + C\u01a1 h\u1ecdc<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">IP67 weather-resistant seals<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<p><!-- Section 2 --><\/p>\n<section id=\"mold-design-techniques\" 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\">Mold Design Techniques to Prevent Flash and Peel-Off<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2758\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-shut-off-mold-design.webp\" alt=\"overmolding-shut-off-mold-design\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-shut-off-mold-design.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-shut-off-mold-design-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-shut-off-mold-design-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-shut-off-mold-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\">Tooling geometry directly controls the flash-free encapsulation and edge peel resistance of overmolded elastomers. Low-viscosity soft resins flow easily under injection pressure, creating cosmetic flash if mold shut-offs are improperly fitted. Machining durable tool cavities utilizing 25 sets of <a href=\"https:\/\/www.jccncmachining.com\/capabilities\/cnc-milling\/5-axis-milling\/\"><strong>5-axis CNC machining<\/strong><\/a> centers ensures shut-off steel tolerances under \u00b10.01 mm, preventing soft rubber leakage. Incorporating mechanical locking features along the border of the elastomeric boundary provides secondary physical retention.<\/p>\n<p><!-- Numbered List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">Critical mold design steps for reliable overmolding execution include:<\/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>Shut-off land tolerance<\/strong>\u2014Designing shut-off steel with tolerances under 0.01 mm prevents elastomeric flash on cosmetic surfaces.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Perimeter mechanical grooves<\/strong>\u2014Incorporating 90-degree mechanical locking channels along the border prevents edge peeling under dynamic shear.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Substrate preheating<\/strong>\u2014Maintaining substrate cavity temperatures at 70\u00b0C to 90\u00b0C during overmolding promotes molecular interdiffusion.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Gate position optimization<\/strong>\u2014Locating fan or tab gates on thick substrate sections distributes fill pressure evenly without washing out thin walls.<\/li>\n<\/ol>\n<\/section>\n<p><!-- Section 3 --><\/p>\n<section id=\"turnkey-applications\" 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\">Turnkey Medical &amp; Industrial Handheld Overmolded Enclosures<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2761\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/cleanroom-medical-overmolding-inspection.webp\" alt=\"cleanroom-medical-overmolding-inspection\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/cleanroom-medical-overmolding-inspection.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/cleanroom-medical-overmolding-inspection-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/cleanroom-medical-overmolding-inspection-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/cleanroom-medical-overmolding-inspection-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\">Regulated industries require certified manufacturing conditions to prevent contamination and guarantee component compliance. Operating an ISO Class 8 cleanroom molding department under ISO 13485 certification protects sterile medical devices during overmolding and automated drop-packaging. Medical applications utilize biocompatible elastomers meeting USP Class VI and ISO 10993 criteria for surgical tool handles and fluidic diagnostic housings.<\/p>\n<p><!-- Bulleted List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">Target industry overmolding solutions include:<\/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>Medical surgical tools<\/strong>\u2014ISO Class 8 cleanroom overmolding using USP Class VI <strong>TPE<\/strong> for slip-resistant sterilizable grips.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Automotive key fobs and door handles<\/strong>\u2014IATF 16949 certified <strong>TPU<\/strong> overmolding for scratch resistance and tactile comfort.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Industrial diagnostic enclosures<\/strong>\u2014Santoprene TPV overmolding over rigid PC\/ABS for IP67 fluid sealing and drop shock absorption.<\/li>\n<\/ul>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Automotive programs receive complete PPAP Level 3 documentation packages under IATF 16949 quality standards. Every production lot includes Failure Mode and Effects Analysis (FMEA), process control plans, and raw material Certificate of Analysis (COA) verification. Metrology laboratories utilize automated Zeiss CMM machines with scanning precision of \u00b10.003 mm to verify dimensional tolerances.<\/p>\n<\/section>\n<p><!-- Section 4 --><\/p>\n<section id=\"prototyping-scaling\" 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\">Scaling Prototyping to High-Volume Production<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2759\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-tool-core-assembly.webp\" alt=\"overmolding-tool-core-assembly\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-tool-core-assembly.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-tool-core-assembly-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-tool-core-assembly-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/overmolding-tool-core-assembly-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\">Scaling overmolding injection molding projects from initial engineering concepts to continuous high-volume production requires flexible tooling strategies. In-house tool rooms cut aluminum or pre-hardened soft steel rapid molds to deliver T1 prototype samples in as fast as 7 to 10 business days. Rapid bridge tooling permits physical drop testing and ergonomic evaluations before investing in production-grade steel tools.<\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Mass production utilizes fully hardened S136 stainless steel or H13 tool steel cores heat-treated to HRC 48-52. Building SPI Class 101 molds guarantees tool performance for over 1,000,000 production cycles across 35+ automated presses ranging from 15T to 3000T. Executing Decoupled Molding principles maintains process stability, achieving CpK &amp; PpK &gt; 1.67 on critical sealing boundaries.<\/p>\n<\/section>\n<p><!-- FAQ Section --><\/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\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2760\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/3d-scanning-overmolded-seal.webp\" alt=\"3d-scanning-overmolded-seal\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/3d-scanning-overmolded-seal.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/3d-scanning-overmolded-seal-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/3d-scanning-overmolded-seal-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/07\/3d-scanning-overmolded-seal-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\">How do you prevent TPE flash on overmolded parts?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Preventing flash requires maintaining shut-off steel tolerances tighter than 0.01 mm and optimizing injection holding pressure. Our tooling engineers design spring-loaded floating shut-offs that clamp firmly against the substrate during injection.<\/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\">What is the difference between overmolding and two shot injection molding?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Overmolding is a two-step process where the substrate is molded first and transferred to a second mold cavity for elastomer injection. Two shot molding completes both injections inside a single machine cycle using a specialized rotary platen tool.<\/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\">Which elastomer provides the best chemical adhesion to glass-filled Nylon?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Adhesion-modified TPE grades or Santoprene TPV compounds formulated specifically for polar substrates deliver the highest bond strength to glass-filled PA66. Incorporating perimeter mechanical dovetails further enhances structural peel resistance.<\/p>\n<\/div>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Manufacturing ergonomic hardware components requires fusing tactile soft-touch elastomers over rigid structural frameworks. Traditional mechanical assembly using fasteners or manual glues increases labor costs and creates potential failure points under cyclic fatigue. Specifying custom overmolding injection molding integrates soft elastomers directly onto rigid plastic substrates or metal inserts during processing. JUCHENG operates as a vertically [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2756,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts\/2755","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/comments?post=2755"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts\/2755\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media\/2756"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=2755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/categories?post=2755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/tags?post=2755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}