{"id":2881,"date":"2026-08-08T18:22:59","date_gmt":"2026-08-08T10:22:59","guid":{"rendered":"http:\/\/0"},"modified":"2026-08-04T17:52:56","modified_gmt":"2026-08-04T09:52:56","slug":"why-low-pressure-molding-replaces-potting-and-epoxy","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/ja\/blog\/why-low-pressure-molding-replaces-potting-and-epoxy\/","title":{"rendered":"Why Low Pressure Molding Replaces Potting and Epoxy"},"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\">Encapsulating fragile electronic assemblies, printed circuit boards (PCBs), and delicate micro-sensors requires specialized packaging techniques that prevent mechanical crush damage. Traditional high-pressure thermoplastic molding exerts extreme hydraulic force that snaps gold wire bonds and crushes delicate surface-mount components. Liquid epoxy two-part potting provides gentle encapsulation, but long curing times extending across hours severely restrict daily manufacturing throughput. This technical guide reviews solvent-free hot melt processing, low-stress clamping mechanics, and environmental sealing standards.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2885\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-hot-melt-injection-machine.webp\" alt=\"low-pressure-hot-melt-injection-machine\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-hot-melt-injection-machine.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-hot-melt-injection-machine-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-hot-melt-injection-machine-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-hot-melt-injection-machine-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\">\u76ee\u6b21<\/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=\"#hot-melt-encapsulation\">1. Polyamide Hot Melt Encapsulation for PCB Boards, Sensors &amp; Harnesses<\/a><\/li>\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#protecting-electronics\">2. Protecting Fragile Electronics from Pressure, Moisture &amp; Vibration<\/a><\/li>\n<li style=\"margin-bottom: 0\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#ip67-overmolding\">3. IP67 Waterproof Overmolding with Low Thermal Stress<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- Section 1 --><\/p>\n<section id=\"hot-melt-encapsulation\" 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\">Polyamide Hot Melt Encapsulation for PCB Boards, Sensors &amp; Harnesses<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2882\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/polyamide-hot-melt-sensor-encapsulation.webp\" alt=\"polyamide-hot-melt-sensor-encapsulation\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/polyamide-hot-melt-sensor-encapsulation.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/polyamide-hot-melt-sensor-encapsulation-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/polyamide-hot-melt-sensor-encapsulation-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/polyamide-hot-melt-sensor-encapsulation-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\">Executing gentle <strong>low pressure molding<\/strong> utilizes low-viscosity <strong>hot melt polyamide<\/strong> (PA) resins to encapsulate sensitive electronics safely. Operating injection pressures from 1.5 to 3.0 MPa\u2014roughly 10% of standard injection molding pressure\u2014prevents physical damage to fragile solder joints. Processing temperatures between 190\u00b0C and 230\u00b0C quickly melt the dimer-acid based polyamide pellets without transferring damaging heat to underlying circuit boards. Single-component dimer polyamides flow freely into complex housing geometries, forming a seamless dielectric jacket. Solidifying within 15 to 45 seconds accelerates assembly speeds compared to liquid potting techniques.<\/p>\n<p><!-- Numbered List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">Low pressure encapsulation processing steps 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>Low-pressure melt delivery<\/strong>\u2014Pumping low-viscosity hot melt resin at 1.5 to 3.0 MPa prevents mechanical crushing of surface-mount components.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Aluminum mold thermal dissipation<\/strong>\u2014\u8efd\u91cf\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u5de5\u5177\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u30dd\u30ea\u30a2\u30df\u30c9\u6eb6\u878d\u7269\u304c\u6025\u901f\u306b\u51b7\u5374\u3055\u308c\u3001\u71b1\u66b4\u9732\u6642\u9593\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\u30cf\u30a6\u30b8\u30f3\u30b0\u76f4\u63a5\u5c01\u6b62<\/strong>\u2014\u9732\u51fa\u3057\u305f\u56de\u8def\u57fa\u677f\u306b\u76f4\u63a5\u6a39\u8102\u3092\u5c04\u51fa\u3059\u308b\u3053\u3068\u3067\u3001\u5225\u9014\u5916\u5074\u306e\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u30b7\u30a7\u30eb\u304c\u4e0d\u8981\u306b\u306a\u308a\u307e\u3059\u3002.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\u9ad8\u901f\u7269\u7406\u7684\u56fa\u5316<\/strong>\u2014\u6eb6\u878d\u30dd\u30ea\u30a2\u30df\u30c9\u309230\u79d2\u4ee5\u5185\u306b\u51b7\u5374\u3059\u308b\u3053\u3068\u3067\u3001\u5373\u5ea7\u306b\u5f8c\u5de5\u7a0b\u306e\u51e6\u7406\u3084\u96fb\u6c17\u8a66\u9a13\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002.<\/li>\n<\/ol>\n<\/section>\n<p><!-- Section 2 --><\/p>\n<section id=\"protecting-electronics\" 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\">\u8106\u5f31\u306a\u96fb\u5b50\u6a5f\u5668\u3092\u5727\u529b\u3001\u6e7f\u6c17\u3001\u632f\u52d5\u304b\u3089\u4fdd\u8b77<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2884\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/ip67-waterproof-cable-overmolding.webp\" alt=\"ip67-waterproof-cable-overmolding\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/ip67-waterproof-cable-overmolding.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/ip67-waterproof-cable-overmolding-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/ip67-waterproof-cable-overmolding-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/ip67-waterproof-cable-overmolding-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\">\u74b0\u5883\u30b7\u30fc\u30eb\u6027\u80fd\u306f\u3001\u904e\u9177\u306a\u81ea\u52d5\u8eca\u306e\u30a2\u30f3\u30c0\u30fc\u30d5\u30fc\u30c9\u3084\u7523\u696d\u74b0\u5883\u306b\u304a\u3044\u3066\u3001\u53b3\u683c\u306aIP67\u304a\u3088\u3073IP68\u9632\u6c34\u7b49\u7d1a\u3092\u9054\u6210\u3057\u307e\u3059\u3002\u30c0\u30a4\u30de\u30fc\u7cfb\u30dd\u30ea\u30a2\u30df\u30c9\u306f\u3001\u96fb\u5b50\u57fa\u677f\u3001\u30d5\u30ec\u30ad\u30b7\u30d6\u30eb\u30b1\u30fc\u30d6\u30eb\u30b8\u30e3\u30b1\u30c3\u30c8\u3001\u304a\u3088\u3073\u30b3\u30cd\u30af\u30bf\u30d4\u30f3\u306b\u81ea\u7136\u306b\u63a5\u7740\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.jcinjectionmolding.com\/ja\/materials\/polycarbonate-pc\/\"><strong>\u30dd\u30ea\u30ab\u30fc\u30dc\u30cd\u30fc\u30c8\uff08PC\uff09<\/strong><\/a> \u307e\u305f\u306fPVC\u3002\u9023\u7d9a\u7684\u306a\u5316\u5b66\u7d50\u5408\u3092\u5f62\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u6e7f\u6c17\u3001\u5869\u6c34\u5674\u9727\u3001\u81ea\u52d5\u8eca\u7528\u6d41\u4f53\u304c\u654f\u611f\u306a\u96fb\u5b50\u56de\u8def\u306b\u6d78\u900f\u3059\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002\u30db\u30c3\u30c8\u30e1\u30eb\u30c8\u6750\u6599\u306b\u56fa\u6709\u306e\u5f3e\u6027\u7279\u6027\u306f\u3001\u6a5f\u68b0\u7684\u306a\u9053\u8def\u632f\u52d5\u3092\u5438\u53ce\u3057\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u5fdc\u529b\u7de9\u548c\u30be\u30fc\u30f3\u306b\u6cbf\u3063\u305f\u30d5\u30ec\u30c3\u30af\u30b9\u75b2\u52b4\u3092\u9632\u304e\u307e\u3059\u3002\u96fb\u5b50\u30bb\u30f3\u30b5\u30fc\u306b\u4f4e\u5727\u6210\u5f62\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u654f\u611f\u306a\u5185\u90e8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u71b1\u885d\u6483\u3084\u6a5f\u68b0\u7684\u885d\u6483\u304b\u3089\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n<\/section>\n<p><!-- Section 3 --><\/p>\n<section id=\"ip67-overmolding\" 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\">\u4f4e\u71b1\u5fdc\u529b\u306eIP67\u9632\u6c34\u30aa\u30fc\u30d0\u30fc\u30e2\u30fc\u30eb\u30c7\u30a3\u30f3\u30b0<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2887\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-molding-vs-potting.webp\" alt=\"low-pressure-molding-vs-potting\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-molding-vs-potting.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-molding-vs-potting-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-molding-vs-potting-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/low-pressure-molding-vs-potting-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\">\u6bd4\u8f03 <strong>IP67\u9632\u6c34\u30aa\u30fc\u30d0\u30fc\u30e2\u30fc\u30eb\u30c7\u30a3\u30f3\u30b0<\/strong> \u4f4e\u5727\u30db\u30c3\u30c8\u30e1\u30eb\u30c8\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408\u30682\u6db2\u6027\u30a8\u30dd\u30ad\u30b7\u6ce8\u578b\u3092\u6bd4\u8f03\u3059\u308b\u3068\u3001\u5927\u304d\u306a\u751f\u7523\u4e0a\u306e\u5229\u70b9\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3059\u3002\u6db2\u72b6\u30dd\u30c3\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u591a\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u786c\u5316\u30e9\u30c3\u30af\u3001\u9ad8\u4fa1\u306a\u6df7\u5408\u30ce\u30ba\u30eb\u3001\u6709\u6bd2\u306a\u5316\u5b66\u85ac\u54c1\u306e\u53d6\u308a\u6271\u3044\u624b\u9806\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u30af\u30ea\u30fc\u30f3\u30eb\u30fc\u30e0\u4f5c\u696d\u304c\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002\u30db\u30c3\u30c8\u30e1\u30eb\u30c8\u30dd\u30ea\u30a2\u30df\u30c9\u306f\u975e\u6bd2\u6027\u3067\u6eb6\u5264\u3092\u542b\u307e\u306a\u3044\u71b1\u53ef\u5851\u6027\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u3067\u3042\u308a\u3001\u7d14\u7c8b\u306b\u7269\u7406\u7684\u306a\u72b6\u614b\u5909\u5316\u306b\u3088\u3063\u3066\u6eb6\u878d\u304a\u3088\u3073\u51b7\u5374\u3055\u308c\u307e\u3059\u3002\u786c\u5316\u6642\u9593\u304c\u30bc\u30ed\u3067\u3042\u308b\u305f\u3081\u3001\u5728\u5eab\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u89e3\u6d88\u3055\u308c\u3001\u4f4e\u30af\u30e9\u30f3\u30d7\u529b\u306e\u6a5f\u68b0\u304c\u5de5\u5177\u8a2d\u5099\u30b3\u30b9\u30c8\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3057\u307e\u3059\u3002\u30bb\u30f3\u30b5\u30fc\u5c01\u6b62\u306b\u4f4e\u5727\u6210\u5f62\u3092\u6307\u5b9a\u3059\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u6700\u5c0f\u9650\u306e\u71b1\u5fdc\u529b\u3067\u9632\u6c34\u4fdd\u8b77\u3092\u9054\u6210\u3057\u307e\u3059\u3002.<\/p>\n<p><!-- Table 1: Process 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\">\u30d1\u30c3\u30b1\u30fc\u30b8\u30f3\u30b0\u6280\u8853<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u5c04\u51fa\u5727\u529b\uff08MPa\uff09<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u51e6\u7406\u30b5\u30a4\u30af\u30eb\u30bf\u30a4\u30e0<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">Environmental Sealing Rating<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">Wire Bond Damage Risk<\/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\">Low Pressure Molding (PA Hot Melt)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">1.5 &#8211; 3.0 MPa<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">15 &#8211; 45 Seconds<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">IP67 \/ IP68 Waterproof<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Zero Risk (Gentle melt delivery)<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Traditional Liquid Epoxy Potting<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">0.1 &#8211; 0.5 MPa (Gravity\/Low)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">2 &#8211; 24 Hours (Chemical cure)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">IP67 Water Resistant<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Low Risk (Long chemical exposure)<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Standard High-Pressure Injection<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">50 &#8211; 150 MPa<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">30 &#8211; 60 Seconds<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">IP65 &#8211; IP67<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">High Risk (Hydraulic wire shearing)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\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\">\u3088\u304f\u3042\u308b\u8cea\u554f (FAQ)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2883\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/inspecting-encapsulated-sensor-solder-joints.webp\" alt=\"inspecting-encapsulated-sensor-solder-joints\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/inspecting-encapsulated-sensor-solder-joints.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/inspecting-encapsulated-sensor-solder-joints-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/inspecting-encapsulated-sensor-solder-joints-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/inspecting-encapsulated-sensor-solder-joints-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\">Why does low pressure molding not damage delicate gold wire bonds on PCBs?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Low pressure molding operates at injection pressures between 1.5 and 3.0 MPa, which is vastly lower than standard injection pressures exceeding 80 MPa. Gentle fluid pressure allows molten polyamide to flow smoothly over exposed solder joints and gold wire bonds without applying mechanical shear force. Low thermal mass of the thin plastic skin also cools rapidly, preventing thermal degradation of underlying electronic components.<\/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 polyamide hot melt encapsulation and traditional potting?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Traditional potting pours liquid two-part epoxy or polyurethane into a pre-molded outer plastic housing, requiring several hours to cure chemically. Low pressure molding injects solvent-free hot melt polyamide directly over the electronics, serving as both the housing and seal. Physical cooling completes within 30 seconds, eliminating outer shell costs and accelerating manufacturing throughput.<\/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 low-pressure molded sensors pass IP67 water immersion testing?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Polyamide hot melt resins form strong adhesive bonds with wire PVC insulation, PCB substrates, and plastic connector housings. Creating a continuous molecular seal along cable entry points prevents moisture and dust ingress under 1-meter water immersion. Material adhesion withstands severe thermal shock cycling between -40\u00b0C and 125\u00b0C without delaminating.<\/p>\n<\/div>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Encapsulating fragile electronic assemblies, printed circuit boards (PCBs), and delicate micro-sensors requires specialized packaging techniques that prevent mechanical crush damage. Traditional high-pressure thermoplastic molding exerts extreme hydraulic force that snaps gold wire bonds and crushes delicate surface-mount components. Liquid epoxy two-part potting provides gentle encapsulation, but long curing times extending across hours severely restrict daily manufacturing throughput. This technical guide reviews solvent-free hot melt processing, low-stress clamping mechanics, and environmental sealing standards. Table of Contents 1. Polyamide Hot Melt Encapsulation for PCB Boards, Sensors &amp; Harnesses 2. Protecting Fragile Electronics from Pressure, Moisture &amp; Vibration 3. IP67 Waterproof Overmolding with Low Thermal Stress Polyamide Hot Melt Encapsulation for PCB Boards, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2886,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2881","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/posts\/2881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/comments?post=2881"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/posts\/2881\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media\/2886"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media?parent=2881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/categories?post=2881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/tags?post=2881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}