{"id":2874,"date":"2026-08-08T10:03:58","date_gmt":"2026-08-08T02:03:58","guid":{"rendered":"http:\/\/0"},"modified":"2026-08-04T17:52:45","modified_gmt":"2026-08-04T09:52:45","slug":"microcellular-foam-injection-molding-eliminates-sink-marks","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/ja\/blog\/microcellular-foam-injection-molding-eliminates-sink-marks\/","title":{"rendered":"Microcellular Foam Injection Molding Eliminates Sink Marks"},"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 structural designers and industrial packaging engineers face continuous pressure to reduce component mass without compromising mechanical bending stiffness. Solid plastic parts with thick walls suffer from localized thermal shrinkage, creating unsightly surface sink marks, high internal stress, and long cooling delays. Injecting physical blowing agents into molten thermoplastics creates internal gas pressure that counteracts volumetric contraction while trimming part weight. This technical guide reviews physical supercritical fluid processing, cavity pressure reduction mechanics, and structural polymer applications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2875\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/supercritical-fluid-dosing-unit.webp\" alt=\"supercritical-fluid-dosing-unit\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/supercritical-fluid-dosing-unit.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/supercritical-fluid-dosing-unit-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/supercritical-fluid-dosing-unit-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/supercritical-fluid-dosing-unit-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=\"#mucell-foaming\">1. Microcellular Foaming (MuCell) Technology for Weight Reduction<\/a><\/li>\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#eliminating-sink-marks\">2. Eliminating Sink Marks &amp; Reducing Internal Mold Cavity Pressure<\/a><\/li>\n<li style=\"margin-bottom: 0\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#structural-foaming\">3. Structural Polymer Foaming for Large Enclosures &amp; Automotive Components<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- Section 1 --><\/p>\n<section id=\"mucell-foaming\" 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\">Microcellular Foaming (MuCell) Technology for Weight Reduction<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2879\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/mucell-microcell-structure-microscope.webp\" alt=\"mucell-microcell-structure-microscope\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/mucell-microcell-structure-microscope.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/mucell-microcell-structure-microscope-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/mucell-microcell-structure-microscope-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/mucell-microcell-structure-microscope-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 physical <a href=\"https:\/\/www.jcinjectionmolding.com\/ja\/service\/custom-mold-making\/\"><strong>foam injection molding<\/strong><\/a> utilizes <strong>MuCell technology<\/strong> \u8d85\u81e8\u754c\u6d41\u4f53\u3092\u30dd\u30ea\u30de\u30fc\u6eb6\u878d\u4f53\u306b\u6eb6\u89e3\u3055\u305b\u308b\u300215\uff5e25 MPa\u3067\u8d85\u81e8\u754c\u7a92\u7d20\u307e\u305f\u306f\u4e8c\u9178\u5316\u70ad\u7d20\u3092\u6a5f\u7b52\u5185\u306b\u6ce8\u5165\u3059\u308b\u3068\u3001\u5358\u76f8\u306e\u30dd\u30ea\u30de\u30fc-\u30ac\u30b9\u6eb6\u6db2\u304c\u5f62\u6210\u3055\u308c\u308b\u3002\u5358\u76f8\u6eb6\u6db2\u304c\u91d1\u578b\u30ad\u30e3\u30d3\u30c6\u30a3\u306b\u6d41\u5165\u3057\u3001\u6025\u6fc0\u306a\u5727\u529b\u964d\u4e0b\u3092\u7d4c\u9a13\u3059\u308b\u3068\u3001\u6570\u5341\u5104\u306e <strong>\u5fae\u7d30\u767a\u6ce1<\/strong> \u30bb\u30eb\u304c\u77ac\u6642\u306b\u6838\u751f\u6210\u3059\u308b\u30025\uff5e50\u30df\u30af\u30ed\u30f3\u306e\u72ec\u7acb\u5fae\u7d30\u6c17\u6ce1\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u69cb\u9020\u7684\u306a\u6163\u6027\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u3001\u90e8\u54c1\u91cd\u91cf\u309210%\uff5e20%\u524a\u6e1b\u3059\u308b\u3002\u7269\u7406\u7684\u8d85\u81e8\u754c\u767a\u6ce1\u306f\u5316\u5b66\u7684\u306a\u526f\u751f\u6210\u7269\u6b8b\u7559\u7269\u3092\u4e00\u5207\u6b8b\u3055\u305a\u3001\u539f\u6750\u6599\u306e\u7d14\u5ea6\u3068\u30ea\u30b5\u30a4\u30af\u30eb\u6027\u3092\u7dad\u6301\u3059\u308b\u3002.<\/p>\n<p><!-- Numbered List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">\u8d85\u81e8\u754c\u767a\u6ce1\u30d7\u30ed\u30bb\u30b9\u306e\u9806\u5e8f\u306f\u6b21\u306e\u3068\u304a\u308a\uff1a<\/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>\u8d85\u81e8\u754c\u6d41\u4f53\u306e\u4f9b\u7d66<\/strong>\u2014\u8d85\u81e8\u754c\u72b6\u614b\u306e\u7a92\u7d20\u30ac\u30b9\u3092\u6ce8\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30dd\u30ea\u30de\u30fc\u6eb6\u878d\u4f53\u3078\u306e\u5b8c\u5168\u306a\u6eb6\u89e3\u3092\u78ba\u4fdd\u3059\u308b\u3002.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\u5358\u76f8\u6eb6\u6db2\u306e\u6df7\u5408<\/strong>\u2014\u9ad8\u3044\u6a5f\u7b52\u5727\u529b\u4e0b\u3067\u30ac\u30b9\u3068\u6eb6\u878d\u6a39\u8102\u3092\u6df7\u5408\u3057\u3001\u5747\u8cea\u306a\u30dd\u30ea\u30de\u30fc-\u30ac\u30b9\u6eb6\u6db2\u3092\u751f\u6210\u3059\u308b\u3002.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\u5fae\u7d30\u30bb\u30eb\u6838\u751f\u6210<\/strong>\u2014\u6eb6\u878d\u4f53\u304c\u30ad\u30e3\u30d3\u30c6\u30a3\u306b\u6d41\u5165\u3059\u308b\u969b\u306e\u5727\u529b\u964d\u4e0b\u304c\u3001\u6570\u5341\u5104\u306e\u5fae\u7d30\u6c17\u6ce1\u306e\u6025\u901f\u306a\u6838\u751f\u6210\u3092\u5f15\u304d\u8d77\u3053\u3059\u3002.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\u30ad\u30e3\u30d3\u30c6\u30a3\u5185\u90e8\u81a8\u5f35<\/strong>\u2014\u81a8\u5f35\u3059\u308b\u30ac\u30b9\u6c17\u6ce1\u304c\u6eb6\u878d\u6a39\u8102\u3092\u91d1\u578b\u58c1\u306b\u5411\u304b\u3063\u3066\u5916\u5074\u3078\u62bc\u3057\u51fa\u3057\u3001\u56fa\u4f53\u30b9\u30ad\u30f3\u3068\u767a\u6ce1\u30b3\u30a2\u3092\u5f62\u6210\u3059\u308b\u3002.<\/li>\n<\/ol>\n<\/section>\n<p><!-- Section 2 --><\/p>\n<section id=\"eliminating-sink-marks\" 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\">\u30d2\u30b1\u8de1\u306e\u6392\u9664\u3068\u91d1\u578b\u30ad\u30e3\u30d3\u30c6\u30a3\u5185\u5727\u529b\u306e\u4f4e\u6e1b<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2880\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/sink-mark-comparison-plastic-part.webp\" alt=\"sink-mark-comparison-plastic-part\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/sink-mark-comparison-plastic-part.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/sink-mark-comparison-plastic-part-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/sink-mark-comparison-plastic-part-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/sink-mark-comparison-plastic-part-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\">\u81a8\u5f35\u3059\u308b\u5fae\u7d30\u6c17\u6ce1\u304c\u9023\u7d9a\u7684\u306a <strong>\u81ea\u5df1\u5145\u586b\u5727\u529b<\/strong> \u90e8\u54c1\u30b3\u30a2\u5185\u90e8\u304b\u3089\u51b7\u5374\u6bb5\u968e\u3092\u901a\u3057\u3066\u5168\u4f53\u306b\u308f\u305f\u3063\u3066\u3002\u5185\u90e8\u30ac\u30b9\u81a8\u5f35\u304c\u51b7\u5374\u30dd\u30ea\u30de\u30fc\u3092\u30ad\u30e3\u30d3\u30c6\u30a3\u92fc\u306b\u62bc\u3057\u4ed8\u3051\u3001\u539a\u8089\u69cb\u9020\u30ea\u30d6\u4e0a\u306e\u8868\u9762\u3072\u3051\u30de\u30fc\u30af\u3092\u5b8c\u5168\u306b\u6392\u9664\u3057\u307e\u3059\u3002\u6eb6\u89e3\u30ac\u30b9\u306b\u3088\u308b\u6eb6\u878d\u7c98\u5ea6\u306e\u4f4e\u4e0b\u306b\u3088\u308a\u3001\u30bd\u30ea\u30c3\u30c9\u6210\u5f62\u3088\u308a\u308230%\uff5e50%\u4f4e\u3044\u30ad\u30e3\u30d3\u30c6\u30a3\u5727\u529b\u3067\u767a\u6ce1\u5c04\u51fa\u6210\u5f62\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u30ad\u30e3\u30d3\u30c6\u30a3\u5727\u529b\u306e\u4f4e\u6e1b\u306b\u3088\u308a\u6210\u5f62\u5185\u5728\u5fdc\u529b\u304c\u6392\u9664\u3055\u308c\u3001\u90e8\u54c1\u306e\u53cd\u308a\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u3001\u3088\u308a\u5c0f\u3055\u306a\u578b\u7de0\u529b\u306e\u30d7\u30ec\u30b9\u3067\u5927\u578b\u69cb\u9020\u30ab\u30d0\u30fc\u3092\u6210\u5f62\u3067\u304d\u307e\u3059\u3002.<\/p>\n<\/section>\n<p><!-- Section 3 --><\/p>\n<section id=\"structural-foaming\" 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\">\u5927\u578b\u7b50\u4f53\u304a\u3088\u3073\u81ea\u52d5\u8eca\u90e8\u54c1\u5411\u3051\u69cb\u9020\u30dd\u30ea\u30de\u30fc\u767a\u6ce1<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2876\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/automotive-engine-shroud-foamed-plastic.webp\" alt=\"automotive-engine-shroud-foamed-plastic\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/automotive-engine-shroud-foamed-plastic.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/automotive-engine-shroud-foamed-plastic-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/automotive-engine-shroud-foamed-plastic-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/automotive-engine-shroud-foamed-plastic-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\">\u69cb\u9020\u767a\u6ce1\u306f\u3001\u30ac\u30e9\u30b9\u5145\u586b\u3092\u542b\u3080\u5e45\u5e83\u3044\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u6a39\u8102\u306b\u308f\u305f\u3063\u3066\u52b9\u679c\u7684\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.jcinjectionmolding.com\/ja\/materials\/glass-fiber-gf\/\"><strong>PA66-GF30<\/strong><\/a>, <strong>\u30dd\u30ea\u30d7\u30ed\u30d4\u30ec\u30f3\uff08PP\uff09<\/strong>, <strong>PC\/ABS<\/strong>, ,\u304a\u3088\u3073 <strong>PBT<\/strong>. \u81ea\u52d5\u8eca\u30a8\u30f3\u30b8\u30f3\u30ab\u30d0\u30fc\u3001\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u30b5\u30dd\u30fc\u30c8\u3001\u7523\u696d\u7528\u7b50\u4f53\u30d1\u30cd\u30eb\u306f\u3001\u30de\u30a4\u30af\u30ed\u30bb\u30eb\u30e9\u30fc\u52a0\u5de5\u306b\u3088\u308a\u5358\u4f4d\u8cea\u91cf\u3042\u305f\u308a\u306e\u69cb\u9020\u525b\u6027\u3092\u6700\u5927\u5316\u3057\u307e\u3059\u3002\u8efd\u91cf\u5316\u3068\u53cd\u308a\u306e\u306a\u3044\u5bf8\u6cd5\u5b89\u5b9a\u6027\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u8981\u6c42\u306e\u53b3\u3057\u3044e\u30e2\u30d3\u30ea\u30c6\u30a3\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u306e\u90e8\u54c1\u8a8d\u5b9a\u304c\u52a0\u901f\u3057\u307e\u3059\u3002\u767a\u6ce1\u5c04\u51fa\u6210\u5f62\u4e2d\u306e\u9ad8\u5ea6\u306a\u30d7\u30ed\u30bb\u30b9\u5236\u5fa1\u306e\u5c0e\u5165\u306b\u3088\u308a\u3001\u4e00\u8cab\u3057\u305f\u90e8\u54c1\u91cd\u91cf\u3068\u6a5f\u68b0\u7684\u75b2\u52b4\u8010\u6027\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002\u69cb\u9020\u7528\u9014\u306b\u767a\u6ce1\u5c04\u51fa\u6210\u5f62\u3092\u6307\u5b9a\u3059\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u8010\u885d\u6483\u6027\u80fd\u3092\u72a0\u7272\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u5927\u5e45\u306a\u6750\u6599\u7bc0\u7d04\u3092\u9054\u6210\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p><!-- Table 1: Foaming 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\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u6a39\u8102\u30b0\u30ec\u30fc\u30c9<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u30ac\u30b9\u5264\u30bf\u30a4\u30d7<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u5e73\u5747\u30bb\u30eb\u30b5\u30a4\u30ba\uff08\u03bcm\uff09<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u91cd\u91cf\u524a\u6e1b\uff08%\uff09<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\u4e3b\u306a\u767a\u6ce1\u7528\u9014<\/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\">PA66-GF30\uff08Zytel 70G33L\uff09<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u8d85\u81e8\u754c\u7a92\u7d20\uff08N2\uff09<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">10 \u2013 25 \u03bcm<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">12% \u2013 18%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u81ea\u52d5\u8eca\u30a8\u30f3\u30b8\u30f3\u30b7\u30e5\u30e9\u30a6\u30c9\u304a\u3088\u3073\u30ed\u30c3\u30ab\u30fc\u30ab\u30d0\u30fc<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u30dd\u30ea\u30d7\u30ed\u30d4\u30ec\u30f3\uff08PP-HP500N\uff09<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u8d85\u81e8\u754cN2 \/ CO2<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">20 \u2013 50 \u03bcm<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">15% \u2013 25%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u5927\u578b\u5185\u88c5\u30c9\u30a2\u30ad\u30e3\u30ea\u30a2\uff06\u30c8\u30e9\u30f3\u30af\u30e9\u30a4\u30ca\u30fc<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">PC\/ABS \u30a2\u30ed\u30a4 (\u30d9\u30a4\u30d6\u30ec\u30f3\u30c9)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u8d85\u81e8\u754c\u7a92\u7d20\uff08N2\uff09<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">15 \u2013 30 \u03bcm<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">10% \u2013 15%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\u96fb\u5b50\u6a5f\u5668\u7b50\u4f53\u30d9\u30fc\u30b9\u30d7\u30ec\u30fc\u30c8<\/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-2877\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-foamed-plastic-part-weight.webp\" alt=\"measuring-foamed-plastic-part-weight\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-foamed-plastic-part-weight.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-foamed-plastic-part-weight-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-foamed-plastic-part-weight-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-foamed-plastic-part-weight-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\">\u7269\u7406\u7684MuCell\u767a\u6ce1\u3068\u5316\u5b66\u767a\u6ce1\u5264\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\u7269\u7406\u7684MuCell\u767a\u6ce1\u306f\u3001\u8d85\u81e8\u754c\u7a92\u7d20\u307e\u305f\u306f\u4e8c\u9178\u5316\u70ad\u7d20\u30ac\u30b9\u3092\u6eb6\u878d\u6a39\u8102\u306b\u76f4\u63a5\u6eb6\u89e3\u3055\u305b\u30015\uff5e50\u30df\u30af\u30ed\u30f3\u306e\u5747\u4e00\u306a\u30de\u30a4\u30af\u30ed\u30d0\u30d6\u30eb\u3092\u6570\u767e\u4e07\u500b\u751f\u6210\u3057\u307e\u3059\u3002\u5316\u5b66\u767a\u6ce1\u5264\u306f\u71b1\u306b\u3088\u308b\u7c89\u672b\u5206\u89e3\u306b\u4f9d\u5b58\u3057\u3001\u5316\u5b66\u6b8b\u7559\u7269\u3092\u6b8b\u3059\u3068\u3068\u3082\u306b\u3001\u6a5f\u68b0\u7684\u5f37\u5ea6\u3092\u640d\u306a\u3046\u3088\u308a\u5927\u304d\u304f\u4e0d\u898f\u5247\u306a\u6c17\u6ce1\u7a7a\u6d1e\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u7269\u7406\u7684\u767a\u6ce1\u306f\u3001\u3088\u308a\u9ad8\u3044\u5bf8\u6cd5\u5b89\u5b9a\u6027\u3068\u512a\u308c\u305f\u8010\u885d\u6483\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002.<\/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\">\u767a\u6ce1\u5c04\u51fa\u6210\u5f62\u306f\u90e8\u54c1\u8868\u9762\u306b\u30d5\u30ed\u30fc\u30de\u30fc\u30af\u3092\u751f\u3058\u3055\u305b\u307e\u3059\u304b\uff1f<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\u51b7\u3048\u305f\u30ad\u30e3\u30d3\u30c6\u30a3\u58c1\u9762\u306b\u5230\u9054\u3057\u305f\u81a8\u5f35\u30ac\u30b9\u6c17\u6ce1\u306f\u3001\u672a\u5857\u88c5\u306e\u5916\u89b3\u9762\u306b\u5fae\u304b\u306a\u9280\u8272\u306e\u30d5\u30ed\u30fc\u30de\u30fc\u30af\u3092\u751f\u3058\u3055\u305b\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u91d1\u578b\u6e29\u5ea6\u306e\u4e0a\u6607\u3001\u9ad8\u901f\u5c04\u51fa\u3001\u307e\u305f\u306f\u30ac\u30b9\u30ab\u30a6\u30f3\u30bf\u30fc\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u5de5\u6cd5\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u8868\u9762\u306e\u30d5\u30ed\u30fc\u30de\u30fc\u30af\u3092\u89e3\u6d88\u3057\u3001\u7f8e\u3057\u3044\u5916\u89b3\u4ed5\u4e0a\u3052\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u81ea\u52d5\u8eca\u5185\u88c5\u90e8\u54c1\u306f\u3057\u3070\u3057\u3070\u5857\u88c5\u307e\u305f\u306f\u30c6\u30af\u30b9\u30c1\u30e3\u52a0\u5de5\u3055\u308c\u308b\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u5fae\u7d30\u306a\u30d5\u30ed\u30fc\u30e9\u30a4\u30f3\u3092\u5b8c\u5168\u306b\u96a0\u3057\u307e\u3059\u3002.<\/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\">\u5fae\u7d30\u767a\u6ce1\u306b\u3088\u3063\u3066\u3069\u306e\u7a0b\u5ea6\u306e\u8efd\u91cf\u5316\u304c\u9054\u6210\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">\u8efd\u91cf\u5316\u306f\u901a\u5e38\u3001\u6a5f\u68b0\u7684\u6027\u80fd\u3092\u72a0\u7272\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u69cb\u9020\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u90e8\u54c1\u306710%\uff5e20%\u306e\u7bc4\u56f2\u3067\u3059\u3002\u8584\u8089\u90e8\u54c1\u306f8%\uff5e12%\u306e\u8cea\u91cf\u524a\u6e1b\u3092\u9054\u6210\u3057\u3001\u539a\u8089\u69cb\u9020\u30cf\u30a6\u30b8\u30f3\u30b0\u306f\u6700\u592725%\u306e\u6750\u6599\u7bc0\u7d04\u3092\u9054\u6210\u3057\u307e\u3059\u3002\u6750\u6599\u306e\u7bc0\u7d04\u306f\u3001\u90e8\u54c1\u91cd\u91cf\u306e\u4f4e\u6e1b\u3068\u8f38\u9001\u30b3\u30b9\u30c8\u306e\u524a\u6e1b\u306b\u76f4\u63a5\u3064\u306a\u304c\u308a\u307e\u3059\u3002.<\/p>\n<\/div>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Automotive structural designers and industrial packaging engineers face continuous pressure to reduce component mass without compromising mechanical bending stiffness. Solid plastic parts with thick walls suffer from localized thermal shrinkage, creating unsightly surface sink marks, high internal stress, and long cooling delays. Injecting physical blowing agents into molten thermoplastics creates internal gas pressure that counteracts volumetric contraction while trimming part weight. This technical guide reviews physical supercritical fluid processing, cavity pressure reduction mechanics, and structural polymer applications. Table of Contents 1. Microcellular Foaming (MuCell) Technology for Weight Reduction 2. Eliminating Sink Marks &amp; Reducing Internal Mold Cavity Pressure 3. Structural Polymer Foaming for Large Enclosures &amp; Automotive Components Microcellular Foaming [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2878,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2874","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\/2874","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=2874"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/posts\/2874\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media\/2878"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/media?parent=2874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/categories?post=2874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ja\/wp-json\/wp\/v2\/tags?post=2874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}