{"id":51381,"date":"2026-02-16T17:01:48","date_gmt":"2026-02-16T09:01:48","guid":{"rendered":"https:\/\/zetarmold.com\/?p=51381"},"modified":"2026-05-04T10:45:24","modified_gmt":"2026-05-04T02:45:24","slug":"%e6%9d%90%e6%96%99%e7%89%b9%e6%80%a7%e3%81%8c%e3%83%aa%e3%83%96%e8%a8%ad%e8%a8%88%e3%81%ab%e5%bd%b1%e9%9f%bf%e3%82%92%e4%b8%8e%e3%81%88%e3%82%8b","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/ja\/%e6%9d%90%e6%96%99%e7%89%b9%e6%80%a7%e3%81%8c%e3%83%aa%e3%83%96%e8%a8%ad%e8%a8%88%e3%81%ab%e5%bd%b1%e9%9f%bf%e3%82%92%e4%b8%8e%e3%81%88%e3%82%8b\/","title":{"rendered":"How Do Material Properties Influence Rib Design in Plastic Injection Molding?"},"content":{"rendered":"<p>\u30ea\u30d6\u8a2d\u8a08\u306f\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u5358\u306a\u308b\u5e7e\u4f55\u5b66\u7684\u30eb\u30fc\u30eb\u3067\u306f\u306a\u304f\u3001\u6750\u6599\u6319\u52d5\u306e\u554f\u984c\u3067\u3059\u3002ABS\u3001PC\u3001PP\u3001\u30ca\u30a4\u30ed\u30f3\u3001POM\u3001\u30ac\u30e9\u30b9\u5145\u586b\u6a39\u8102\u306f\u3001\u53ce\u7e2e\u3001\u51b7\u5374\u3001\u5fdc\u529b\u62b5\u6297\u304c\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u305f\u3081\u3001\u3042\u308b\u30dd\u30ea\u30de\u30fc\u3067\u6a5f\u80fd\u3059\u308b\u540c\u3058\u30ea\u30d6\u304c\u3001\u5225\u306e\u6750\u6599\u3067\u306f\u30b7\u30f3\u30af\u30de\u30fc\u30af\u3001\u53cd\u308a\u3001\u307e\u305f\u306f\u53d6\u308a\u51fa\u3057\u640d\u50b7\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u91d1\u578b\u92fc\u6750\u304c\u5207\u524a\u3001\u8a66\u4f5c\u3001\u30c6\u30b9\u30c8\u3001\u9069\u5207\u306b\u691c\u8a3c\u3055\u308c\u308b\u524d\u306b\u3001\u30ea\u30d6\u306e\u539a\u3055\u3001\u9ad8\u3055\u3001\u6839\u5143R\u3001\u629c\u304d\u52fe\u914d\u3001\u30b2\u30fc\u30c8\u4f4d\u7f6e\u3092\u6a39\u8102\u30d5\u30a1\u30df\u30ea\u30fc\u306b\u5bfe\u3057\u3066\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30d0\u30a4\u30e4\u30fc\u3068\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u3001\u5b9f\u7528\u7684\u306a\u76ee\u6a19\u306f\u5358\u7d14\u3067\u3059\uff1a\u58c1\u306e\u4ea4\u5dee\u90e8\u306b\u539a\u3044\u584a\u3092\u4f5c\u3089\u305a\u306b\u30ea\u30d6\u3092\u4f7f\u3063\u3066\u525b\u6027\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u5f53\u793e\u306e\u91d1\u578bDFM\u30ec\u30d3\u30e5\u30fc\u3067\u306f\u3001\u307e\u305a\u6a39\u8102\u304c\u975e\u6676\u6027\u3001\u534a\u7d50\u6676\u6027\u3001\u30a8\u30e9\u30b9\u30c8\u30de\u30fc\u3001\u5145\u586b\u6750\u306e\u3044\u305a\u308c\u3067\u3042\u308b\u304b\u3092\u7279\u5b9a\u3057\u3001\u305d\u306e\u6319\u52d5\u306b\u57fa\u3065\u3044\u3066\u30ea\u30d6\u3068\u58c1\u306e\u6bd4\u7387\u3068\u51b7\u5374\u6226\u7565\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u6750\u6599\u7279\u6027\u304c\u30ea\u30d6\u8a2d\u8a08\u306e\u6c7a\u5b9a\u3092\u3069\u306e\u3088\u3046\u306b\u5909\u3048\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u91d1\u578b\u30fb\u6210\u5f62\u4e0d\u826f\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1.jpg\" alt=\"3D design of plastic injection mold\" class=\"wp-image-53248 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-design-800x457-1-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">\u30ea\u30d6\u914d\u7f6e\u3092\u793a\u30593D\u91d1\u578b\u8a2d\u8a08<\/figcaption><\/figure>\n<div class=\"callout-key\" style=\"background:#f0f7ff; border-left:4px solid #2563eb; padding:1em 1.2em; border-radius:6px; margin:1.5em 0;\">\n<strong>\u8981\u70b9<\/strong><\/p>\n<ul>\n<li>\u30ea\u30d6\u539a\u306f\u3001\u30dd\u30ea\u30de\u30fc\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u516c\u79f0\u58c1\u539a\u306e40-75\uff05\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093<\/li>\n<li>\u7d50\u6676\u6027\u6750\u6599\u306f\u53ce\u7e2e\u7387\u304c\u9ad8\u3044\u305f\u3081\u3001\u3088\u308a\u8584\u3044\u30ea\u30d6\u304c\u5fc5\u8981\u3067\u3059<\/li>\n<li>\u30ac\u30e9\u30b9\u5145\u586b\u30dd\u30ea\u30de\u30fc\u306f\u3088\u308a\u539a\u3044\u30ea\u30d6\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u304c\u3001\u7570\u65b9\u6027\u53ce\u7e2e\u306e\u8ab2\u984c\u3092\u751f\u307f\u51fa\u3057\u307e\u3059<\/li>\n<li>\u6c88\u307f\u8de1\u306e\u6df1\u523b\u5ea6\u306f\u3001\u63a5\u5408\u90e8\u306e\u8cea\u91cf\u3068\u6750\u6599\u306e\u51b7\u5374\u6319\u52d5\u306b\u4f9d\u5b58\u3057\u307e\u3059<\/li>\n<li>\u30ea\u30d6\u306e\u7dba\u9e97\u306a\u53d6\u308a\u51fa\u3057\u306b\u306f\u30010.5-1.5\u5ea6\/\u5074\u9762\u306e\u629c\u304d\u52fe\u914d\u304c\u4e0d\u53ef\u6b20\u3067\u3059<\/li>\n<\/ul>\n<\/div>\n<h2>What Are the Material Constraints for Rib Geometry?<\/h2>\n<p>\u30ea\u30d6\u5f62\u72b6\u306b\u5bfe\u3059\u308b\u6750\u6599\u5236\u7d04\u306f\u3001\u6a39\u8102\u53ce\u7e2e\u7387\u3001\u51b7\u5374\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3001\u525b\u6027\u76ee\u6a19\u3001\u53d6\u308a\u51fa\u3057\u6469\u64e6\u3001\u304a\u3088\u3073\u5916\u89b3\u4e0a\u306e\u30b7\u30f3\u30af\u30ea\u30b9\u30af\u3067\u3059\u3002<\/p>\n<p>\u3067 <a href=\"https:\/\/zetarmold.com\/ja\/injection-molding-complete-guide\/\">\u5c04\u51fa\u6210\u5f62<\/a>\u3001\u30ea\u30d6\u306f\u3001\u5747\u4e00\u306b\u539a\u3044\u58c1\u306e\u91cd\u91cf\u3084\u30b5\u30a4\u30af\u30eb\u30bf\u30a4\u30e0\u306e\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u8ffd\u52a0\u305b\u305a\u306b\u525b\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u540d\u76ee\u4e0a\u306e\u58c1\u304b\u3089\u5782\u76f4\u306b\u7a81\u304d\u51fa\u305f\u8584\u3044\u88dc\u5f37\u8981\u7d20\u3067\u3059\u3002\u6839\u672c\u7684\u306a\u8ab2\u984c\u306f\u3001\u3059\u3079\u3066\u306e\u30ea\u30d6\u304c\u58c1\u3068\u63a5\u3059\u308b\u90e8\u5206\u3067\u5c40\u6240\u7684\u306a\u8cea\u91cf\u306e\u84c4\u7a4d\u3092\u751f\u307f\u51fa\u3057\u3001\u305d\u306e\u4f59\u5206\u306a\u8cea\u91cf\u304c\u53ce\u7e2e\u306b\u95a2\u9023\u3059\u308b\u5916\u89b3\u4e0a\u306e\u6b20\u9665\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u30ea\u30d6\u3068\u58c1\u306e\u4ea4\u5dee\u90e8\u3067\u6eb6\u878d\u30dd\u30ea\u30de\u30fc\u304c\u51b7\u5374\u3055\u308c\u308b\u3068\u3001\u539a\u3044\u65ad\u9762\u306f\u5468\u56f2\u306e\u8868\u76ae\u3088\u308a\u3082\u9577\u304f\u6db2\u4f53\u306e\u307e\u307e\u3067\u3059\u3002\u30b3\u30a2\u304c\u6700\u7d42\u7684\u306b\u56fa\u5316\u3057\u3066\u53ce\u7e2e\u3059\u308b\u3068\u3001\u3059\u3067\u306b\u51cd\u7d50\u3057\u305f\u5916\u8868\u9762\u3092\u5185\u5074\u306b\u5f15\u304d\u8fbc\u307f\u3001\u76ee\u306b\u898b\u3048\u308b <strong>\u30b7\u30f3\u30af\u30de\u30fc\u30af<\/strong> on the Class A surface opposite the rib. The severity of this defect is not a constant; it depends almost entirely on the material&#8217;s internal structure and its shrinkage behavior.<\/p>\n<div class=\"factory-insight\" style=\"background:#f0f7ff;border-left:4px solid #0066cc;padding:12px 16px;margin:1.5em 0;\"><strong>\ud83c\udfed ZetarMold Factory Insight<\/strong><br \/>In our Shanghai factory, we run 47 injection molding machines from 90T to 1850T, and we&#8217;ve processed over 400 different plastic materials. That breadth of experience means we&#8217;ve seen firsthand how a rib designed for ABS will fail catastrophically in PP if the thickness ratio isn&#8217;t adjusted \u2014 the same nominal geometry can produce a barely visible sink mark in one material and a deep groove in another.<\/div>\n<p><strong>\u975e\u6676\u6027\u30dd\u30ea\u30de\u30fc<\/strong> (ABS\u3001PC\u3001PMMA)\u306f\u4f4e\u304f\u3001\u307b\u307c\u7b49\u65b9\u6027\u306e\u53ce\u7e2e\u3092\u793a\u3057\u307e\u3059\uff08\u901a\u5e380.2-0.8\uff05\uff09\u3002\u5206\u5b50\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u914d\u5217\u306b\u3088\u308a\u3001\u6bd4\u8f03\u7684\u5747\u4e00\u306b\u53ce\u7e2e\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u8a2d\u8a08\u8005\u306f\u591a\u5c11\u306e\u4f59\u88d5\u304c\u5f97\u3089\u308c\u3001\u6df1\u523b\u306a\u30b7\u30f3\u30af\u30de\u30fc\u30af\u306a\u3057\u306b\u30ea\u30d6\u3092\u58c1\u539a\u306e50-70\uff05\u3068\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u534a\u7d50\u6676\u6027\u30dd\u30ea\u30de\u30fc<\/strong> (PP, PE, PA6, PA66) \u306f\u5225\u306e\u8a71\u3067\u3059\u3002\u51b7\u5374\u3059\u308b\u969b\u3001\u5206\u5b50\u304c\u898f\u5247\u7684\u306a\u7d50\u6676\u69cb\u9020\u306b\u6298\u308a\u7573\u307e\u308c\u3001\u3088\u308a\u5bc6\u306b\u8a70\u307e\u308b\u305f\u3081\u3001\u306f\u308b\u304b\u306b\u9ad8\u3044\u53ce\u7e2e\uff08\u3057\u3070\u3057\u3070 1.0-3.0%\uff09\u3092\u751f\u3058\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u3088\u308a\u8584\u3044\u30ea\u30d6\uff08\u58c1\u539a\u306e40-50%\uff09\u3068\u3001\u6d41\u52d5\u8a98\u8d77\u914d\u5411\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306e\u3088\u308a\u614e\u91cd\u306a\u30b2\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u8981\u6c42\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>&#8220;Ribs significantly increase part stiffness with minimal weight addition compared to increasing the entire wall thickness.&#8221;<\/b><span class=\"claim-true-or-false\">\u771f<\/span><\/p>\n<p class=\"claim-explanation\">\u30ea\u30d6\u306f\u65ad\u9762\u4e8c\u6b21\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u5897\u52a0\u3055\u305b\u3001\u5747\u4e00\u306b\u539a\u3044\u58c1\u306b\u4f34\u3046\u6750\u6599\u30b3\u30b9\u30c8\u3001\u51b7\u5374\u6642\u9593\u306e\u5897\u52a0\u3001\u30b7\u30f3\u30af\u30de\u30fc\u30af\u306e\u30ea\u30b9\u30af\u306a\u3057\u306b\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f\u88dc\u5f37\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>&#8220;You can safely design ribs at the same thickness as the nominal wall to maximize structural strength.&#8221;<\/b><span class=\"claim-true-or-false\">\u507d<\/span><\/p>\n<p class=\"claim-explanation\">\u58c1\u3068\u540c\u3058\u539a\u3055\u306e\u30ea\u30d6\u306f\u3001\u63a5\u5408\u90e8\u306b\u5927\u304d\u306a\u71b1\u7684\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u4f5c\u308a\u3001\u5916\u89b3\u9762\u306b\u6c88\u307f\u8de1\u3092\u78ba\u5b9f\u306b\u751f\u3058\u3055\u305b\u3001\u5185\u90e8\u30dc\u30a4\u30c9\u3092\u751f\u3080\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1.jpg\" alt=\"\u5c04\u51fa\u6210\u5f62\u56f3\u306b\u304a\u3051\u308b\u30ea\u30d6\u306e\u5bf8\u6cd5\" class=\"wp-image-53347 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/rib-dimensions-diagram-800x457-1-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">\u6750\u6599\u5225\u30ea\u30d6\u5bf8\u6cd5<\/figcaption><\/figure>\n<h2>\u6750\u6599\u30d5\u30a1\u30df\u30ea\u30fc\u3054\u3068\u306e\u53ce\u7e2e\u7387\u306f\u3069\u306e\u3088\u3046\u306b\u7570\u306a\u308a\u307e\u3059\u304b\uff1f<\/h2>\n<p>The relationship between material shrinkage and rib geometry is not linear \u2014 it&#8217;s a system-level constraint. Following established <strong><a href=\"https:\/\/www.protolabs.com\/services\/injection-molding\/plastic-injection-molding\/design-guidelines\/\">DFM guidelines<\/a><sup id=\"fnref1:1\"><a href=\"#fn:1\" class=\"footnote-ref\">1<\/a><\/sup><\/strong> \u304a\u3088\u3073\u56fd\u969b <strong><a href=\"https:\/\/www.iso.org\/standard\/70413.html\">\u53ce\u7e2e\u57fa\u6e96<\/a><sup id=\"fnref1:2\"><a href=\"#fn:2\" class=\"footnote-ref\">2<\/a><\/sup><\/strong>\u3001\u4ee5\u4e0b\u306e\u8868\u306f\u30dd\u30ea\u30de\u30fc\u30d5\u30a1\u30df\u30ea\u30fc\u5225\u306e\u63a8\u5968\u8a2d\u8a08\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u5024\u306f\u51fa\u767a\u70b9\u3067\u3042\u308a\u3001\u5e38\u306b\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u3002 <a href=\"https:\/\/rjginc.com\/what-is-the-role-of-mold-flow-analysis-in-injection-molding\/\">Moldflow simulation<\/a><sup id=\"fnref1:3\"><a href=\"#fn:3\" class=\"footnote-ref\">3<\/a><\/sup> \u5177\u4f53\u7684\u306a\u90e8\u54c1\u5f62\u72b6\u3068\u30b2\u30fc\u30c8\u4f4d\u7f6e\u306b\u5fdc\u3058\u3066\u3002<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:1.5em 0;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\u975e\u6676\u6027 (PC, ABS)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\u7d50\u6676\u6027\u6a39\u8102 (PP\u3001PA6)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\u30ac\u30e9\u30b9\u5145\u586b (PA66-GF30)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u30ea\u30d6\/\u58c1\u539a\u6bd4<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">50-70%<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">40-50%<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">55-75%<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u53ce\u7e2e\u7387<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.2-0.8%<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1.0-3.0%<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.2-0.8% (\u7570\u65b9\u6027)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u30c9\u30e9\u30d5\u30c8\u89d2\u5ea6<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.5-1.0\u5ea6\/\u5074\u9762<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u5074\u9762\u3042\u305f\u308a 0.5-1.5<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u5074\u9762\u3042\u305f\u308a 1.0-2.0<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u30d9\u30fc\u30b9\u534a\u5f84<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.25 \u00d7 t(\u58c1\u539a)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.20 \u00d7 t(\u58c1\u539a)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.25 \u00d7 t(\u58c1\u539a)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u6700\u5927\u30ea\u30d6\u9ad8\u3055<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3 \u00d7 t(\u58c1\u539a)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2.5 \u00d7 t(\u58c1\u539a)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3 \u00d7 t(\u58c1\u539a)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u30b7\u30f3\u30af\u30ea\u30b9\u30af<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Low-Medium<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u9ad8\u3044<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u4f4e\u3044\uff08\u305f\u3060\u3057\u53cd\u308a\u30ea\u30b9\u30af\u3042\u308a\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Notice the glass-filled column: glass fibers dramatically reduce volumetric shrinkage in the flow direction, but they barely affect transverse shrinkage. This anisotropic behavior means the part may not sink, but it can warp significantly if the rib layout doesn&#8217;t account for directional shrinkage. In practice, we always run a fill + pack + warp simulation for glass-filled materials before committing to tool steel.<\/p>\n<h2>\u306a\u305c\u975e\u6676\u6027\u30dd\u30ea\u30de\u30fc\u3068\u7d50\u6676\u6027\u30dd\u30ea\u30de\u30fc\u3067\u306f\u7570\u306a\u308b\u30ea\u30d6\u6226\u7565\u304c\u5fc5\u8981\u306a\u306e\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u975e\u6676\u8cea\u30dd\u30ea\u30de\u30fc\u3068\u7d50\u6676\u6027\u30dd\u30ea\u30de\u30fc\u306f\u3001\u51cd\u7d50\u3001\u53ce\u7e2e\u3001\u4fdd\u5727\u306e\u4ed5\u65b9\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u7570\u306a\u308b\u30ea\u30d6\u6226\u7565\u3067\u6271\u308f\u308c\u307e\u3059\u3002\u975e\u6676\u8cea\u6750\u6599\u306f\u6db2\u4f53\u304b\u3089\u56fa\u4f53\u3078\u5f90\u3005\u306b\u79fb\u884c\u3059\u308b\u305f\u3081\u3001\u92ed\u3044\u76f8\u5909\u5316\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u5f90\u3005\u306e\u51cd\u7d50\u306b\u3088\u308a\u3001\u30ea\u30d6\u3068\u58c1\u306e\u63a5\u5408\u90e8\u306f\u5727\u529b\u3092\u5747\u7b49\u5316\u3059\u308b\u6642\u9593\u304c\u3088\u308a\u591a\u304f\u3042\u308a\u3001\u53ce\u7e2e\u5dee\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u5916\u89b3\u4e0a\u306e\u554f\u984c\u306a\u304f\u3001\u30ea\u30d6\u306e\u539a\u3055\u3092\u58c1\u306e70%\u306b\u8fd1\u3065\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u534a\u7d50\u6676\u6027\u30dd\u30ea\u30de\u30fc\u306f\u7279\u5b9a\u306e\u6e29\u5ea6\u3067\u6025\u6fc0\u306a\u7d50\u6676\u5316\u304c\u8d77\u3053\u308a\u307e\u3059\u3002\u7d50\u6676\u5316\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u6750\u6599\u306f\u6fc0\u3057\u304f\u53ce\u7e2e\u3057\u307e\u3059\u3002\u30ea\u30d6\u306e\u57fa\u90e8\u304c\u539a\u3059\u304e\u308b\u3068\u3001\u305d\u306e\u5c40\u6240\u7684\u306a\u9818\u57df\u3067\u306e\u7d50\u6676\u5316\u53ce\u7e2e\u304c\u3001\u8868\u9762\u3092\u5e73\u5766\u306b\u4fdd\u3063\u3066\u3044\u305f\u4fdd\u5727\u5727\u529b\u3092\u5727\u5012\u3057\u307e\u3059\u3002\u7d50\u679c\uff1a\u30b2\u30fc\u30c8\u304c\u51cd\u7d50\u3057\u305f\u5f8c\u3067\u306f\u3001\u3044\u304b\u306a\u308b\u4fdd\u5727\u5727\u529b\u3067\u3082\u4fee\u6b63\u3067\u304d\u306a\u3044\u6df1\u304f\u76ee\u7acb\u3064\u30b7\u30f3\u30af\u30de\u30fc\u30af\u304c\u751f\u3058\u307e\u3059\u3002<\/p>\n<div class=\"factory-insight\" style=\"background:#f0f7ff;border-left:4px solid #0066cc;padding:12px 16px;margin:1.5em 0;\"><strong>\ud83c\udfed ZetarMold Factory Insight<\/strong><br \/>With over 20 years of injection molding experience and an in-house mold manufacturing facility, we&#8217;ve learned to adjust rib proportions before cutting steel. A common mistake we catch in DFM reviews: designers applying PC rib ratios to a PP part. The part looks fine in CAD \u2014 but the first shot shows deep sink lines on every rib location.<\/div>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>&#8220;Increasing packing pressure alone cannot eliminate sink marks caused by oversized ribs in high-shrinkage crystalline materials.&#8221;<\/b><span class=\"claim-true-or-false\">\u771f<\/span><\/p>\n<p class=\"claim-explanation\">Once the gate freezes off, no additional pressure reaches the thick section. The only effective fix is reducing the rib-wall thickness ratio to match the material&#8217;s shrinkage characteristics.<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>&#8220;Glass-filled materials always produce better rib outcomes because their overall shrinkage is lower.&#8221;<\/b><span class=\"claim-true-or-false\">\u507d<\/span><\/p>\n<p class=\"claim-explanation\">\u30ac\u30e9\u30b9\u7e4a\u7dad\u306f\u5168\u4f53\u7684\u306a\u53ce\u7e2e\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u304c\u3001\u5f37\u3044\u7570\u65b9\u6027\u52b9\u679c\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002\u30ea\u30d6\u306f\u30b7\u30f3\u30af\u30de\u30fc\u30af\u304c\u751f\u3058\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6d41\u52d5\u65b9\u5411\u3068\u6a2a\u65b9\u5411\u306e\u53ce\u7e2e\u7387\u306e\u5dee\u306b\u3088\u308a\u3001\u5927\u304d\u306a\u53cd\u308a\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<h2>\u5404\u6750\u6599\u306b\u5bfe\u3059\u308b\u5b9f\u7528\u7684\u306a\u8a2d\u8a08\u30eb\u30fc\u30eb\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n<p>Theory is useful, but on the shop floor, designers need actionable rules. Here&#8217;s what we apply in our DFM reviews based on the specific polymer a customer selects:<\/p>\n<p><strong>ABS\u304a\u3088\u3073PC\uff08\u975e\u6676\u8cea\uff09\u306e\u5834\u5408\uff1a<\/strong> \u30ea\u30d6\u539a = \u516c\u79f0\u58c1\u539a\u306e50-70%\u3002\u6700\u5c0f\u629c\u304d\u52fe\u914d = \u5074\u9762\u3042\u305f\u308a0.5\u3002\u57fa\u90e8\u534a\u5f84 = \u58c1\u539a\u00d70.25\u3002\u3053\u308c\u3089\u306e\u6750\u6599\u306f\u8a31\u5bb9\u6027\u304c\u9ad8\u304f\u3001\u53cd\u5bfe\u9762\u304c\u5916\u89b3\u9762\u3067\u306a\u3044\u5834\u5408\u306f70%\u307e\u3067\u539a\u304f\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>PP\u304a\u3088\u3073HDPE\uff08\u534a\u7d50\u6676\u6027\u3001\u975e\u5145\u586b\uff09\u306e\u5834\u5408\uff1a<\/strong> \u30ea\u30d6\u539a = \u58c1\u539a\u306e40-50%\u3002\u6700\u5c0f\u629c\u304d\u52fe\u914d = \u5074\u9762\u3042\u305f\u308a1.0\u3002\u57fa\u90e8\u534a\u5f84 = \u58c1\u539a\u00d70.20\uff08\u8cea\u91cf\u96c6\u4e2d\u3092\u6700\u5c0f\u5316\u3059\u308b\u305f\u3081\u5c0f\u534a\u5f84\uff09\u3002\u3053\u308c\u3089\u306e\u6750\u6599\u306f50%\u3092\u8d85\u3048\u308b\u3068\u30b7\u30f3\u30af\u304c\u767a\u751f\u3057\u307e\u3059 \u2014 PP\u3067\u904e\u5927\u306a\u30ea\u30d6\u3092\u4fee\u6b63\u3059\u308b\u9b54\u6cd5\u306e\u6210\u5f62\u6280\u8853\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/p>\n<p><strong>PA66-GF30\uff08\u30ac\u30e9\u30b9\u7e4a\u7dad\u5145\u586b\uff09\u306e\u5834\u5408\uff1a<\/strong> \u30ea\u30d6\u8089\u539a = \u8089\u539a\u306e55-75%\u3002\u30c9\u30e9\u30d5\u30c8 = \u5074\u9762\u3042\u305f\u308a1.0-2.0\u00b0\uff08\u30ac\u30e9\u30b9\u7e4a\u7dad\u306f\u53d6\u308a\u51fa\u3057\u6469\u64e6\u3092\u5897\u52a0\u3055\u305b\u307e\u3059\uff09\u3002\u53ce\u7e2e\u306e\u4f4e\u6e1b\u306b\u3088\u308a\u539a\u3044\u30ea\u30d6\u304c\u53ef\u80fd\u3067\u3059\u304c\u3001\u30ea\u30d6\u9593\u306e\u6d41\u52d5\u9577\u3055\u306e\u5909\u52d5\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3088\u3046\u306b\u30b2\u30fc\u30c8\u3092\u914d\u7f6e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u3057\u306a\u3044\u3068\u3001\u30b7\u30f3\u30af\u30de\u30fc\u30af\u3067\u306f\u306a\u304f\u53cd\u308a\u304c\u554f\u984c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u306b\u3064\u3044\u3066 <a href=\"https:\/\/zetarmold.com\/ja\/injection-mold-complete-guide\/\">\u5c04\u51fa\u6210\u5f62\u91d1\u578b<\/a> PC\/ABS\u30d6\u30ec\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u8a2d\u8a08\uff1a<\/strong> \u3053\u308c\u3089\u3092\u975e\u6676\u8cea\u3068\u3057\u3066\u6271\u3063\u3066\u304f\u3060\u3055\u3044\u2014PC\u6210\u5206\u304c\u53ce\u7e2e\u6319\u52d5\u3092\u652f\u914d\u3057\u307e\u3059\u3002\u8089\u539a\u306e55-65%\u306e\u30ea\u30d6\u6bd4\u7387\u304c\u6700\u9069\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30d6\u30ec\u30f3\u30c9\u306f\u3001\u5f37\u5ea6\u3068\u8868\u9762\u54c1\u8cea\u306e\u4e21\u65b9\u304c\u91cd\u8981\u306a\u6c11\u751f\u96fb\u5b50\u6a5f\u5668\u30cf\u30a6\u30b8\u30f3\u30b0\u3067\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1.jpg\" alt=\"\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u5c04\u51fa\u6210\u5f62\u90e8\u54c1\u306e\u30ea\u30d6\u3001\u30dc\u30b9\u3001\u304a\u3088\u3073\u58c1\u306e\u8a2d\u8a08\u56f3\" class=\"wp-image-53348 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/plastic-injection-molding-design-diagram-800x457-1-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">\u30ea\u30d6\u30dc\u30b9\u58c1\u539a\u56f3<\/figcaption><\/figure>\n<h2>\u30ea\u30d6\u8a2d\u8a08\u30d7\u30ed\u30bb\u30b9\u3092\u6bb5\u968e\u7684\u306b\u5b9f\u884c\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u30ea\u30d6\u8a2d\u8a08\u30d7\u30ed\u30bb\u30b9\u306f\u5236\u5fa1\u3055\u308c\u305fDFM\u624b\u9806\u3067\u3059\uff1a\u8377\u91cd\u306e\u5b9a\u7fa9\u3001\u6a39\u8102\u30c7\u30fc\u30bf\u306e\u78ba\u5b9a\u3001\u30ea\u30d6\u5bf8\u6cd5\u306e\u6c7a\u5b9a\u3001\u9593\u9694\u306e\u78ba\u8a8d\u3001\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u6210\u5f62\u696d\u8005\u3068\u306e\u30ec\u30d3\u30e5\u30fc\u3002\u69cb\u9020\u30ea\u30d6\u3092\u6709\u3059\u308b\u5168\u3066\u306e\u65b0\u898f\u90e8\u54c1\u306b\u5bfe\u3057\u3066\u6211\u3005\u304c\u5f93\u3046\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d71 \u2014 \u69cb\u9020\u8981\u4ef6\u306e\u5b9a\u7fa9:<\/strong> \u525b\u6027\u76ee\u6a19\u3068\u8377\u91cd\u6761\u4ef6\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u5fc5\u8981\u306a\u65ad\u9762\u4e8c\u6b21\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u8a08\u7b97\u3057\u3001\u63a8\u6e2c\u3067\u306f\u306a\u304f\u30ea\u30d6\u9ad8\u3055\u3068\u9593\u9694\u3092\u9006\u7b97\u3057\u3066\u898b\u7a4d\u3082\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d72 \u2014 \u6750\u6599\u306e\u9078\u629e\u3068\u53ce\u7e2e\u30c7\u30fc\u30bf\u306e\u78ba\u5b9a:<\/strong> Get the actual shrinkage values from the material datasheet for your specific grade and wall thickness. Don&#8217;t use generic values \u2014 PA66-GF30 from different suppliers can vary by 0.2-0.4% in shrinkage.<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d73 \u2014 \u30ea\u30d6\u306e\u6bd4\u7387\u3092\u8a08\u7b97\uff1a<\/strong> Apply the material-specific rib\/wall ratio from the table above. If the wall is 2.5mm and you&#8217;re using PP, the rib base should be 1.0-1.25mm (40-50%). Set draft at 1.0 per side and base radius at 0.5mm.<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d74 \u2014 \u30ea\u30d6\u9593\u9694\u306e\u78ba\u8a8d:<\/strong> \u96a3\u63a5\u3059\u308b\u30ea\u30d6\u9593\u306f\u5c11\u306a\u304f\u3068\u3082\u58c1\u539a\u306e2\u500d\uff08\u7406\u60f3\u7684\u306b\u306f3\u500d\uff09\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u9593\u9694\u304c\u72ed\u3059\u304e\u308b\u3068\u8584\u8089\u5145\u586b\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u4e0d\u5747\u4e00\u51b7\u5374\u3092\u5897\u5e45\u3055\u305b\u307e\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d75 \u2014 Moldflow\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\uff1a<\/strong> \u5145\u586b\u3001\u4fdd\u5727\u3001\u305d\u308a\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7279\u306b\u30ea\u30d6-\u58c1\u63a5\u5408\u90e8\u306e\u4f53\u7a4d\u53ce\u7e2e\u7387\u3068\u305f\u308f\u307f\u7d50\u679c\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u91d1\u578b\u306b\u591a\u984d\u306e\u8cbb\u7528\u3092\u304b\u3051\u308b\u524d\u306b\u554f\u984c\u3092\u767a\u898b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d76 \u2014 \u6210\u5f62\u696d\u8005\u3068\u306eDFM\u30ec\u30d3\u30e5\u30fc\uff1a<\/strong> \u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u3092\u5c04\u51fa\u6210\u5f62\u30d1\u30fc\u30c8\u30ca\u30fc\u3068\u5171\u6709\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u512a\u308c\u305f\u6210\u5f62\u696d\u8005\u306f\u3001\u305d\u306e\u30d7\u30ed\u30bb\u30b9\u30a6\u30a3\u30f3\u30c9\u30a6\uff08\u4fdd\u5727\u80fd\u529b\u3001\u51b7\u5374\u6c34\u8def\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3001\u53d6\u308a\u51fa\u3057\u6226\u7565\u306a\u3069\uff09\u306b\u57fa\u3065\u3044\u3066\u30ea\u30d6\u30ec\u30a4\u30a2\u30a6\u30c8\u306b\u7591\u554f\u3092\u6295\u3052\u304b\u3051\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3059\u3079\u3066\u3001\u30ea\u30d6\u8a2d\u8a08\u304c\u5b9f\u969b\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3069\u3046\u304b\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n<h2>\u6750\u6599\u56fa\u6709\u306e\u30ea\u30d6\u8a2d\u8a08\u3092\u793a\u3059\u5b9f\u4e16\u754c\u306e\u5fdc\u7528\u4f8b\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u5b9f\u969b\u306e\u30ea\u30d6\u306e\u9069\u7528\u4f8b\u306f\u6709\u7528\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u5404\u6750\u6599\u30d5\u30a1\u30df\u30ea\u30fc\u306f\u7570\u306a\u308b\u6545\u969c\u30e2\u30fc\u30c9\uff08\u30b7\u30f3\u30af\u3001\u53cd\u308a\u3001\u53d6\u308a\u51fa\u3057\u62b5\u6297\u3001\u51b7\u5374\u4e0d\u5747\u4e00\uff09\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u304b\u3089\u3067\u3059\u3002 <strong>\u81ea\u52d5\u8eca\u5185\u88c5\u30d6\u30e9\u30b1\u30c3\u30c8\uff08PP + \u30bf\u30eb\u30af\uff09\uff1a<\/strong> \u30bf\u30eb\u30af\u5145\u586bPP\u306e\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u652f\u6301\u30d6\u30e9\u30b1\u30c3\u30c8\u3092\u5b9a\u671f\u7684\u306b\u88fd\u9020\u3057\u3066\u3044\u307e\u3059\u3002\u30bf\u30eb\u30af\u306f\u672a\u5145\u586bPP\u3068\u6bd4\u8f03\u3057\u3066\u53ce\u7e2e\u3092\u308f\u305a\u304b\u306b\u4f4e\u6e1b\u3057\u307e\u3059\u304c\u3001\u7d50\u6676\u6027\u306e\u6027\u8cea\u4e0a\u3001\u30ea\u30d6\u306f\u8089\u539a\u306e40-45%\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5178\u578b\u7684\u306a2.0mm\u306e\u8089\u539a\u306b\u306f\u30010.8-0.9mm\u306e\u30ea\u30d6\u3068\u3001\u5074\u9762\u3042\u305f\u308a1.0\u00b0\u306e\u30c9\u30e9\u30d5\u30c8\u304c\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3\u7b50\u4f53\uff08PC\/ABS\uff09:<\/strong> \u6c11\u751f\u96fb\u5b50\u6a5f\u5668\u306f\u76ee\u306b\u898b\u3048\u308b\u30b7\u30f3\u30af\u306e\u306a\u3044\u30af\u30e9\u30b9A\u8868\u9762\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u975e\u6676\u6027PC\/ABS\u30d6\u30ec\u30f3\u30c9\u3067\u306f\u30012.2mm\u58c1\u539a\u306e60%\uff08\u7d041.3mm\u57fa\u90e8\uff09\u306e\u30ea\u30d6\u304c\u53ef\u80fd\u3067\u3001\u5916\u89b3\u9818\u57df\u306e\u80cc\u9762\u306b\u5c40\u6240\u7684\u306a\u8584\u8089\u90e8\u3092\u8a2d\u3051\u3066\u30b7\u30f3\u30af\u306e\u8996\u8a8d\u6027\u3092\u3055\u3089\u306b\u4f4e\u6e1b\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u7523\u696d\u7528\u7b50\u4f53\uff08PA66-GF30\uff09\uff1a<\/strong> 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9\u3002\u3053\u308c\u306f\u90e8\u54c1\u306e\u5916\u89b3\u3068\u69cb\u9020\u3092\u640d\u306a\u3046\u3060\u3051\u3067\u306a\u304f\u3001\u6570\u5343\u56de\u306e\u751f\u7523\u30b5\u30a4\u30af\u30eb\u306b\u308f\u305f\u3063\u3066\u91d1\u578b\u8868\u9762\u3092\u52a3\u5316\u3055\u305b\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u306a\u305c\u30ac\u30e9\u30b9\u7e4a\u7dad\u5145\u586b\u6750\u6599\u306f\u30ea\u30d6\u306b\u5927\u304d\u306a\u629c\u304d\u52fe\u914d\u3092\u5fc5\u8981\u3068\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4e00\u822c\u7684\u306a\u8a2d\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u3057\u3066\u3001\u30ea\u30d6\u306e\u9ad8\u3055\u306f\u516c\u79f0\u8089\u539a\u306e3\u500d\u3092\u8d85\u3048\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u9ad8\u3044\u30ea\u30d6\u306f\u5145\u586b\u306e\u8ab2\u984c\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u6eb6\u878d\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u304c\u72ed\u304f\u6df1\u3044\u30c1\u30e3\u30cd\u30eb\u306b\u6d41\u308c\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u3001\u305d\u3053\u306f\u6025\u901f\u306b\u51b7\u5374\u3055\u308c\u3001\u7a7a\u6c17\u3092\u9589\u3058\u8fbc\u3081\u305f\u308a\u30b7\u30e7\u30fc\u30c8\u30b7\u30e7\u30c3\u30c8\u3092\u767a\u751f\u3055\u305b\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002\u69cb\u9020\u89e3\u6790\u3067\u3001\u8089\u539a\u306e3\u500d\u306e\u9ad8\u3055\u306e\u6a19\u6e96\u30ea\u30d6\u3067\u306f\u4e0d\u5341\u5206\u306a\u525b\u6027\u304c\u5fc5\u8981\u3068\u3055\u308c\u308b\u5834\u5408\u3001\u3088\u308a\u826f\u3044\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u9069\u5207\u306a\u9593\u9694\u3092\u7a7a\u3051\u305f\u8907\u6570\u306e\u77ed\u3044\u30ea\u30d6\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u88dc\u5f37\u304c\u3088\u308a\u5747\u7b49\u306b\u5206\u6563\u3055\u308c\u3001\u5c04\u51fa\u6210\u5f62\u30d7\u30ed\u30bb\u30b9\u4e2d\u306e\u78ba\u5b9f\u306a\u5145\u586b\u304c\u7dad\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30ea\u30d6\u8a2d\u8a08\u306e\u5c02\u9580\u7684\u306aDFM\u30ec\u30d3\u30e5\u30fc\u304c\u5fc5\u8981\u3067\u3059\u304b\uff1fZetarMold\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u306f\u3001\u90e8\u54c1\u5f62\u72b6\u3092\u5206\u6790\u3057\u3001\u6750\u6599\u306b\u7279\u5316\u3057\u305f\u30ea\u30d6\u306e\u6bd4\u7387\u3092\u63a8\u5968\u3057\u3001\u91d1\u578b\u6295\u8cc7\u524d\u306b\u30e2\u30fc\u30eb\u30c9\u30d5\u30ed\u30fc\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002400\u7a2e\u985e\u4ee5\u4e0a\u306e\u6750\u6599\u3067\u306e20\u5e74\u4ee5\u4e0a\u306e\u7d4c\u9a13\u3092\u6d3b\u304b\u3057\u3001\u8a2d\u8a08\u4e0a\u306e\u554f\u984c\u3092\u65e9\u671f\u306b\u767a\u898b\u3057\u3001\u6642\u9593\u3068\u91d1\u578b\u30b3\u30b9\u30c8\u3092\u7bc0\u7d04\u3057\u307e\u3059\u3002<\/p>\n<p>\u7121\u6599\u898b\u7a4d\u3082\u308a\u3068DFM\u5206\u6790\u3092\u4f9d\u983c\u3059\u308b \u2192<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1.jpg\" alt=\"\u5c04\u51fa\u6210\u5f62\u306e\u305f\u3081\u306e\u9ad8\u3055\u306e\u3042\u308b\u30ea\u30d6\u3068\u8907\u6570\u30ea\u30d6\u306e\u8a2d\u8a08\u6bd4\u8f03\" class=\"wp-image-53343 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/tall-and-multiple-ribs-design-800x457-1-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">\u8907\u6570\u30ea\u30d6\u8a2d\u8a08\u306e\u6bd4\u8f03<\/figcaption><\/figure>\n<hr style=\"margin:2em 0;border:none;border-top:1px solid #e0e0e0;\" \/>\n<ol class=\"footnotes\">\n<li id=\"fn:1\">\n<p><strong>DFM\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3:<\/strong> DFM\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u3001\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u88fd\u9020\u6027\u306e\u305f\u3081\u306e\u8089\u539a\u3001\u30ea\u30d6\u3001\u30dc\u30b9\u3001\u629c\u304d\u52fe\u914d\u3092\u30ab\u30d0\u30fc\u3059\u308b\u5305\u62ec\u7684\u306a\u8a2d\u8a08\u30ac\u30a4\u30c9\u3092\u6307\u3057\u307e\u3059\u3002 <a href=\"#fnref1:1\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:2\">\n<p><strong>\u53ce\u7e2e\u57fa\u6e96:<\/strong> ISO 294-4\u306f\u3001\u71b1\u53ef\u5851\u6027\u6210\u5f62\u6750\u6599\u306e\u53ce\u7e2e\u7387\u3092\u6c7a\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u898f\u5b9a\u3059\u308b\u56fd\u969b\u898f\u683c\u3092\u6307\u3057\u307e\u3059\u3002 <a href=\"#fnref1:2\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:3\">\n<p><strong>Moldflow simulation:<\/strong> \u30e2\u30fc\u30eb\u30c9\u30d5\u30ed\u30fc\u89e3\u6790\u306f\u3001\u88fd\u9020\u524d\u306b\u5145\u586b\u30d1\u30bf\u30fc\u30f3\u3001\u53ce\u7e2e\u3001\u53cd\u308a\u3001\u304a\u3088\u3073\u6f5c\u5728\u7684\u306a\u6b20\u9665\u3092\u4e88\u6e2c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u696d\u754c\u6a19\u6e96\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u6307\u3057\u307e\u3059\u3002 <a href=\"#fnref1:3\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>\u30ea\u30d6\u8a2d\u8a08\u306f\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u5358\u306a\u308b\u5e7e\u4f55\u5b66\u7684\u30eb\u30fc\u30eb\u3067\u306f\u306a\u304f\u3001\u6750\u6599\u6319\u52d5\u306e\u554f\u984c\u3067\u3059\u3002ABS\u3001PC\u3001PP\u3001\u30ca\u30a4\u30ed\u30f3\u3001POM\u3001\u30ac\u30e9\u30b9\u5145\u586b\u6a39\u8102\u306f\u3001\u53ce\u7e2e\u30fb\u51b7\u5374\u30fb\u5fdc\u529b\u62b5\u6297\u306e\u7279\u6027\u304c\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u305f\u3081\u3001\u3042\u308b\u6a39\u8102\u3067\u6709\u52b9\u306a\u30ea\u30d6\u5f62\u72b6\u304c\u3001\u5225\u306e\u6a39\u8102\u3067\u306f\u30b7\u30f3\u30af\u30de\u30fc\u30af\u3001\u53cd\u308a\u3001\u307e\u305f\u306f\u30a8\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u640d\u50b7\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u91d1\u578b\u92fc\u6750\u306e\u5207\u524a\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3001\u30c6\u30b9\u30c8\u3001\u9069\u5207\u306a\u691c\u8a3c\u3092\u884c\u3046\u524d\u306b\u3001\u30ea\u30d6\u306e\u539a\u3055\u3001\u9ad8\u3055\u3001\u4ed8\u3051\u6839R\u3001\u629c\u304d\u52fe\u914d\u3001\u30b2\u30fc\u30c8\u4f4d\u7f6e\u3092\u6a39\u8102\u30d5\u30a1\u30df\u30ea\u30fc\u3054\u3068\u306b\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d0\u30a4\u30e4\u30fc\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u5b9f\u7528\u7684\u306a\u76ee\u6a19\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3059\uff1a\u58c1\u9762\u4ea4\u5dee\u90e8\u3067\u539a\u8089\u5316\u3092\u751f\u3058\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u30ea\u30d6\u3067\u525b\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u3067\u3059\u3002\u5f53\u793e\u306e\u91d1\u578bDFM\u30ec\u30d3\u30e5\u30fc\u3067\u306f\u3001\u307e\u305a\u6700\u521d\u306b\uff3b\u2026\uff3d<\/p>","protected":false},"author":1,"featured_media":53248,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"How Material Properties Influence Rib Design in Injection Molding","_seopress_titles_desc":"Rib thickness must be 40-75% of nominal wall thickness depending on polymer type Semi-crystalline materials require thinner ribs due to higher shrinkage rates.","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[45],"tags":[142,370,369],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/posts\/51381"}],"collection":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/comments?post=51381"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/posts\/51381\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/media\/53248"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/media?parent=51381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/categories?post=51381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/tags?post=51381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}