{"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":"%ec%9e%ac%ec%a7%88-%ed%8a%b9%ec%84%b1%ec%9d%b4-%eb%a6%ac%eb%b8%8c-%ec%84%a4%ea%b3%84%ec%97%90-%ec%98%81%ed%96%a5%ec%9d%84-%eb%af%b8%ec%b9%a9%eb%8b%88%eb%8b%a4","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/ko\/%ec%9e%ac%ec%a7%88-%ed%8a%b9%ec%84%b1%ec%9d%b4-%eb%a6%ac%eb%b8%8c-%ec%84%a4%ea%b3%84%ec%97%90-%ec%98%81%ed%96%a5%ec%9d%84-%eb%af%b8%ec%b9%a9%eb%8b%88%eb%8b%a4\/","title":{"rendered":"How Do Material Properties Influence Rib Design in Plastic Injection Molding?"},"content":{"rendered":"<p>\ub9ac\ube0c \uc124\uacc4\ub294 \uc0ac\ucd9c \uc131\ud615\uc5d0\uc11c \ub2e8\uc21c\ud55c \ud615\uc0c1 \uaddc\uce59\uc774 \uc544\ub2d9\ub2c8\ub2e4; \uc7ac\ub8cc \uac70\ub3d9 \ubb38\uc81c\uc785\ub2c8\ub2e4. ABS, PC, PP, \ub098\uc77c\ub860, POM \ubc0f \uc720\ub9ac \ucda9\uc804 \uc218\uc9c0\ub294 \uac01\uac01 \ub2e4\ub974\uac8c \uc218\ucd95, \ub0c9\uac01 \ubc0f \uc751\ub825\uc5d0 \uc800\ud56d\ud558\ubbc0\ub85c, \ud55c \ud3f4\ub9ac\uba38\uc5d0\uc11c \uc791\ub3d9\ud558\ub294 \ub3d9\uc77c\ud55c \ub9ac\ube0c\uac00 \ub2e4\ub978 \ud3f4\ub9ac\uba38\uc5d0\uc11c\ub294 \uc2f1\ud06c \ub9c8\ud06c, \ub4a4\ud2c0\ub9bc \ub610\ub294 \uc774\uc81d\uc158 \uc190\uc0c1\uc744 \uc77c\uc73c\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub798\uc11c \ub9ac\ube0c \ub450\uaed8, \ub192\uc774, \ub8e8\ud2b8 \ubc18\uacbd, \ub4dc\ub798\ud504\ud2b8 \ubc0f \uac8c\uc774\ud2b8 \uc704\uce58\ub294 \ubab0\ub4dc \uac15\uc7ac\uac00 \uc808\ub2e8, \uc0d8\ud50c\ub9c1, \ud14c\uc2a4\ud2b8 \ubc0f \uc801\uc808\ud788 \uac80\uc99d\ub418\uae30 \uc804\uc5d0 \uc218\uc9c0 \uacc4\uc5f4\uc5d0 \ub300\ud574 \ud655\uc778\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p>\uad6c\ub9e4\uc790\uc640 \uc5d4\uc9c0\ub2c8\uc5b4\uc5d0\uac8c \uc2e4\uc9c8\uc801\uc778 \ubaa9\ud45c\ub294 \uac04\ub2e8\ud569\ub2c8\ub2e4: \ubcbd \uad50\ucc28\ubd80\uc5d0 \ub450\uaebc\uc6b4 \uc9c8\ub7c9\uc744 \uc0dd\uc131\ud558\uc9c0 \uc54a\uc73c\uba74\uc11c \ub9ac\ube0c\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac15\uc131\uc744 \ucd94\uac00\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc6b0\ub9ac\uc758 \uae08\ud615 DFM \uac80\ud1a0\uc5d0\uc11c\ub294 \uba3c\uc800 \uc218\uc9c0\uac00 \ube44\uacb0\uc815\uc131, \ubc18\uacb0\uc815\uc131, \ud0c4\uc131\uc911\ud569\uccb4, \ub610\ub294 \ucda9\uc804\uc7ac\uc778\uc9c0 \uc2dd\ubcc4\ud55c \ud6c4, \ud574\ub2f9 \uac70\ub3d9\uc5d0 \ub9de\ucdb0 \ub9ac\ube0c-\ubcbd \ube44\uc728\uacfc \ub0c9\uac01 \uc804\ub7b5\uc744 \uc870\uc815\ud569\ub2c8\ub2e4. \uc774 \uae00\uc740 \uc7ac\ub8cc \ud2b9\uc131\uc774 \ub9ac\ube0c \uc124\uacc4 \uacb0\uc815\uc744 \uc5b4\ub5bb\uac8c \ubcc0\uacbd\ud558\ub294\uc9c0\uc640 \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \uacf5\uad6c \ubc0f \uc131\ud615 \uacb0\ud568\uc744 \ud53c\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/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;\">\ub9ac\ube0c \ubc30\uce58\ub97c \ubcf4\uc5ec\uc8fc\ub294 3D \uae08\ud615 \uc124\uacc4<\/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>\uc8fc\uc694 \ub0b4\uc6a9<\/strong><\/p>\n<ul>\n<li>\ub9ac\ube0c \ub450\uaed8\ub294 \ud3f4\ub9ac\uba38 \uc885\ub958\uc5d0 \ub530\ub77c \uba85\ubaa9 \ubcbd \ub450\uaed8\uc758 40-75%\uac00 \ub418\uc5b4\uc57c \ud568<\/li>\n<li>\ubc18\uacb0\uc815\uc131 \uc7ac\ub8cc\ub294 \ub354 \ub192\uc740 \uc218\ucd95\ub960\ub85c \uc778\ud574 \ub354 \uc587\uc740 \ub9ac\ube0c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4<\/li>\n<li>\uc720\ub9ac \ucda9\uc804 \ud3f4\ub9ac\uba38\ub294 \ub354 \ub450\uaebc\uc6b4 \ub9ac\ube0c\ub97c \ud5c8\uc6a9\ud558\uc9c0\ub9cc \uc774\ubc29\uc131 \uc218\ucd95 \ubb38\uc81c\ub97c \ub9cc\ub4e6<\/li>\n<li>\uc2f1\ud06c \ub9c8\ud06c \uc2ec\uac01\ub3c4\ub294 \uad50\ucc28\ubd80 \uc9c8\ub7c9\uacfc \uc7ac\ub8cc \ub0c9\uac01 \uac70\ub3d9\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4<\/li>\n<li>\uae68\ub057\ud55c \ub9ac\ube0c \uc774\uc81d\uc158\uc744 \uc704\ud574 \uce21\uba74\ub2f9 0.5-1.5\ub3c4\uc758 \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4\uac00 \ud544\uc218\uc801\uc784<\/li>\n<\/ul>\n<\/div>\n<h2>What Are the Material Constraints for Rib Geometry?<\/h2>\n<p>\ub9ac\ube0c \ud615\uc0c1\uc5d0 \ub300\ud55c \uc7ac\ub8cc \uc81c\uc57d\uc740 \uc218\uc9c0 \uc218\ucd95\ub960, \ub0c9\uac01 \ud504\ub85c\ud30c\uc77c, \uac15\uc131 \ubaa9\ud45c, \uc774\uc81d\uc158 \ub9c8\ucc30, \uc678\uad00 \uc2f1\ud06c \uc704\ud5d8\uc785\ub2c8\ub2e4.<\/p>\n<p>In <a href=\"https:\/\/zetarmold.com\/ko\/injection-molding-complete-guide\/\">\uc0ac\ucd9c \uc131\ud615<\/a>, \ub9ac\ube0c\ub294 \uade0\uc77c\ud558\uac8c \ub450\uaebc\uc6b4 \ubcbd\uc758 \ubb34\uac8c\uc640 \uc0ac\uc774\ud074 \uc2dc\uac04 \uc99d\uac00 \uc5c6\uc774 \uac15\uc131\uc744 \ub192\uc774\uae30 \uc704\ud574 \uba85\ubaa9 \ubcbd\uc5d0\uc11c \uc218\uc9c1\uc73c\ub85c \ub3cc\ucd9c\ub41c \uc587\uc740 \ubcf4\uac15 \uad6c\uc870\uc785\ub2c8\ub2e4. \uadfc\ubcf8\uc801\uc778 \uacfc\uc81c: \ubaa8\ub4e0 \ub9ac\ube0c\ub294 \ubcbd\uacfc \ub9cc\ub098\ub294 \uc9c0\uc810\uc5d0\uc11c \uad6d\ubd80\uc801\uc778 \uc9c8\ub7c9 \uc9d1\uc801\uc744 \uc0dd\uc131\ud558\uba70, \uc774 \ucd94\uac00 \uc9c8\ub7c9\uc740 \uc218\ucd95 \uad00\ub828 \uc678\uad00 \uacb0\ud568\uc744 \uc720\ubc1c\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub9ac\ube0c-\ubcbd \uad50\ucc28\uc810\uc758 \uc6a9\uc735 \ud3f4\ub9ac\uba38\uac00 \ub0c9\uac01\ub420 \ub54c, \ub450\uaebc\uc6b4 \ub2e8\uba74\uc740 \uc8fc\ubcc0 \ud45c\ud53c\ubcf4\ub2e4 \ub354 \uc624\ub798 \uc561\uccb4 \uc0c1\ud0dc\ub85c \ub0a8\uc2b5\ub2c8\ub2e4. \ucf54\uc5b4\uac00 \ub9c8\uce68\ub0b4 \uace0\ud654\ub418\uace0 \uc218\ucd95\ud558\uba74 \uc774\ubbf8 \uc5bc\uc5b4\ubd99\uc740 \uc678\ubd80 \ud45c\uba74\uc744 \uc548\ucabd\uc73c\ub85c \ub2f9\uae41\ub2c8\ub2e4 \u2014 \ubcf4\uc774\ub294 <strong>\uc2f1\ud06c \ub9c8\ud06c<\/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>\ube44\uc815\uc9c8 \ud3f4\ub9ac\uba38<\/strong> (ABS, PC, PMMA)\ub294 \ub0ae\uace0 \uac70\ub4f1\ubc29\uc131\uc5d0 \uac00\uae4c\uc6b4 \uc218\ucd95\ub960(\uc77c\ubc18\uc801\uc73c\ub85c 0.2-0.8%)\uc744 \ubcf4\uc785\ub2c8\ub2e4. \ubb34\uc791\uc704 \ubd84\uc790 \ubc30\uc5f4\uc740 \uc0c1\ub300\uc801\uc73c\ub85c \uade0\uc77c\ud558\uac8c \uc218\ucd95\ud568\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774\ub294 \uc124\uacc4\uc790\uc5d0\uac8c \uc57d\uac04\uc758 \uc5ec\uc720\ub97c \uc90d\ub2c8\ub2e4 \u2014 \ub9ac\ube0c\ub294 \uc2ec\uac01\ud55c \uc2f1\ud06c \ub9c8\ud06c \uc5c6\uc774 \ubcbd \ub450\uaed8\uc758 50-70%\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>\ubc18\uacb0\uc815\uc131 \ud3f4\ub9ac\uba38<\/strong> (PP, PE, PA6, PA66)\ub294 \ub2e4\ub978 \uc774\uc57c\uae30\uc785\ub2c8\ub2e4. \ub0c9\uac01\ub418\uba74\uc11c \ubd84\uc790\uac00 \ub354 \uc870\ubc00\ud558\uac8c \ubc30\uc5f4\ub41c \uaddc\uce59\uc801\uc778 \uacb0\uc815 \uad6c\uc870\ub85c \uc811\ud600 \ud6e8\uc52c \ub354 \ub192\uc740 \uc218\ucd95\ub960\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4 \u2014 \uc885\uc885 1.0-3.0%\uc785\ub2c8\ub2e4. \uc774\ub294 \ub354 \uc587\uc740 \ub9ac\ube0c(\ubcbd \ub450\uaed8\uc758 40-50%)\uc640 \uc720\ub3c4\ub41c \ud750\ub984 \ubc29\ud5a5\uc131\uc744 \uc81c\uc5b4\ud558\uae30 \uc704\ud55c \ub354 \uc2e0\uc911\ud55c \uac8c\uc774\ud305\uc744 \uc694\uad6c\ud569\ub2c8\ub2e4.<\/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\">True<\/span><\/p>\n<p class=\"claim-explanation\">\ub9ac\ube0c\ub294 \uade0\uc77c\ud558\uac8c \ub450\uaebc\uc6b4 \ubcbd\uc758 \uc7ac\ub8cc \ube44\uc6a9, \ub0c9\uac01 \uc2dc\uac04 \uc190\uc2e4 \ubc0f \uc2f1\ud06c \uc704\ud5d8 \uc5c6\uc774 \ud45c\uc801 \ubcf4\uac15\uc744 \uc81c\uacf5\ud558\uc5ec \ub2e8\uba74 2\ucc28 \ubaa8\uba58\ud2b8\ub97c \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4.<\/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\">False<\/span><\/p>\n<p class=\"claim-explanation\">\ubcbd \ub450\uaed8\uc640 \ub3d9\uc77c\ud55c \ub9ac\ube0c\ub294 \uad50\ucc28\uc810\uc5d0\uc11c \ub300\uaddc\ubaa8 \uc5f4\uc810\uc744 \uc0dd\uc131\ud558\uc5ec, \uc678\uad00 \ud45c\uba74\uc5d0 \uc2f1\ud06c \ub9c8\ud06c\ub97c \ubcf4\uc7a5\ud558\uace0 \ub0b4\ubd80 \uacf5\uadf9\uc744 \uc0dd\uc131\ud560 \uac00\ub2a5\uc131\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/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=\"\uc0ac\ucd9c \uc131\ud615 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc758 \ub9ac\ube0c \uce58\uc218\" 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;\">\uc7ac\ub8cc\ubcc4 \ub9ac\ube0c \uce58\uc218<\/figcaption><\/figure>\n<h2>\uc7ac\ub8cc \uacc4\uc5f4\ubcc4 \uc218\ucd95\ub960\uc740 \uc5b4\ub5bb\uac8c \ub2e4\ub978\uac00\uc694?<\/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> \ubc0f \uad6d\uc81c <strong><a href=\"https:\/\/www.iso.org\/standard\/70413.html\">\uc218\ucd95 \uae30\uc900<\/a><sup id=\"fnref1:2\"><a href=\"#fn:2\" class=\"footnote-ref\">2<\/a><\/sup><\/strong>, \uc544\ub798 \ud45c\ub294 \ud3f4\ub9ac\uba38 \uacc4\uc5f4\ubcc4 \uad8c\uc7a5 \uc124\uacc4 \ub9e4\uac1c\ubcc0\uc218\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774 \uac12\ub4e4\uc740 \uc2dc\uc791\uc810\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4; \ud56d\uc0c1 \ub2e4\uc74c\uc744 \ud1b5\ud574 \ud655\uc778\ud558\uc138\uc694 <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> \ud2b9\uc815 \ubd80\ud488 \ud615\uc0c1 \ubc0f \uac8c\uc774\ud2b8 \uc704\uce58\uc5d0 \ub300\ud574.<\/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;\">\ub9e4\uac1c\ubcc0\uc218<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\ube44\uc815\uc9c8 (PC, ABS)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\ubc18\uacb0\uc815\uc131 (PP, PA6)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\uc720\ub9ac \ucda9\uc804 (PA66-GF30)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\ub9ac\ube0c\/\ubcbd \ube44\uc728<\/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;\">\uc218\ucd95\ub960<\/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% (\uc774\ubc29\uc131)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uad6c\ubc30 \uac01\ub3c4<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uce21\uba74\ub2f9 0.5-1.0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uce21\uba74\ub2f9 0.5-1.5<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1.0-2.0 \uce21\uba74\ub2f9<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uae30\ubcf8 \ubc18\uacbd<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.25 \u00d7 t(\ubcbd)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.20 \u00d7 t(\ubcbd)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.25 \u00d7 t(\ubcbd)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\ucd5c\ub300 \ub9ac\ube0c \ub192\uc774<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3 \u00d7 t(\ubcbd)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2.5 \u00d7 t(\ubcbd)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3 \u00d7 t(\ubcbd)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uc2f1\ud06c \uc704\ud5d8<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Low-Medium<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\ub192\uc74c<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\ub0ae\uc74c (\ud558\uc9c0\ub9cc \ub4a4\ud2c0\ub9bc \uc704\ud5d8 \uc788\uc74c)<\/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>\uc65c \ube44\uc815\uc9c8\uacfc \uacb0\uc815\uc131 \ud3f4\ub9ac\uba38\ub294 \uc11c\ub85c \ub2e4\ub978 \ub9ac\ube0c \uc804\ub7b5\uc774 \ud544\uc694\ud55c\uac00\uc694?<\/h2>\n<p>\ube44\uacb0\uc815\uc131 \ubc0f \uacb0\uc815\uc131 \ud3f4\ub9ac\uba38\ub294 \uc11c\ub85c \ub2e4\ub978 \ub9ac\ube0c \uc804\ub7b5\uc73c\ub85c \ucc98\ub9ac\ub429\ub2c8\ub2e4. \uc65c\ub0d0\ud558\uba74 \uadf8\ub4e4\uc740 \ub2e4\ub974\uac8c \uc751\uace0, \uc218\ucd95, \uc555\ucd95 \uc555\ub825\uc744 \uc720\uc9c0\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ube44\uacb0\uc815\uc131 \uc7ac\ub8cc\ub294 \uc561\uccb4\uc5d0\uc11c \uace0\uccb4\ub85c \uc810\uc9c4\uc801\uc73c\ub85c \uc804\ud658\ub418\ubbc0\ub85c \uae09\uaca9\ud55c \uc0c1 \ubcc0\ud654\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \uc774 \uc810\uc9c4\uc801\uc778 \uc751\uace0\ub294 \ub9ac\ube0c-\ubcbd \uc811\ud569\ubd80\uac00 \uc555\ub825\uc744 \uade0\ub4f1\ud654\ud560 \uc2dc\uac04\uc774 \ub354 \ub9ce\uc544\uc838 \ucc28\ub4f1 \uc218\ucd95\uc774 \uc801\uac8c \ubc1c\uc0dd\ud568\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ubcf4\uae30 \ud749\ud55c \uacb0\uacfc \uc5c6\uc774 \ub9ac\ube0c \ub450\uaed8\ub97c \ubcbd\uc758 70%\uc5d0 \ub354 \uac00\uae5d\uac8c \ubc00\uc5b4\ubd99\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ubc18\uacb0\uc815\uc131 \ud3f4\ub9ac\uba38\ub294 \ud2b9\uc815 \uc628\ub3c4\uc5d0\uc11c \uae09\uaca9\ud55c \uacb0\uc815\ud654 \ud604\uc0c1\uc744 \uacaa\uc2b5\ub2c8\ub2e4. \uacb0\uc815\ud654\uac00 \ubc1c\uc0dd\ud558\uba74 \uc7ac\ub8cc\uac00 \uacf5\uaca9\uc801\uc73c\ub85c \uc218\ucd95\ud569\ub2c8\ub2e4. \ub9ac\ube0c \ubca0\uc774\uc2a4\uac00 \ub108\ubb34 \ub450\uaebc\uc6b0\uba74 \ud574\ub2f9 \uad6d\ubd80 \uc601\uc5ed\uc758 \uacb0\uc815\ud654 \uc218\ucd95\uc774 \ud45c\uba74\uc744 \ud3c9\ud3c9\ud558\uac8c \uc720\uc9c0\ud558\ub358 \ud328\ud0b9 \uc555\ub825\uc744 \uc555\ub3c4\ud569\ub2c8\ub2e4. \uacb0\uacfc: \uac8c\uc774\ud2b8\uac00 \uc5bc\uace0 \ub09c \ud6c4 \uc5b4\ub5a4 \uc591\uc758 \ud328\ud0b9 \uc555\ub825\uc73c\ub85c\ub3c4 \uace0\uce60 \uc218 \uc5c6\ub294 \uae4a\uace0 \ubcf4\uc774\ub294 \uc2f1\ud06c \ub9c8\ud06c\uac00 \uc0dd\uae41\ub2c8\ub2e4.<\/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\">True<\/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\">False<\/span><\/p>\n<p class=\"claim-explanation\">While glass fibers reduce overall shrinkage, they create strong anisotropic effects. Ribs may not sink, but differential shrinkage between flow and transverse directions can cause significant warpage.<\/p>\n<\/div>\n<h2>\uac01 \uc7ac\ub8cc\uc5d0 \ub300\ud55c \uc2e4\uc6a9\uc801\uc778 \uc124\uacc4 \uaddc\uce59\uc740 \ubb34\uc5c7\uc778\uac00?<\/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>For ABS and PC (amorphous):<\/strong> Rib thickness = 50-70% of nominal wall. Minimum draft = 0.5 per side. Base radius = 0.25 \u00d7 wall thickness. These materials are forgiving \u2014 you can push toward 70% if the opposite surface is non-cosmetic.<\/p>\n<p><strong>For PP and HDPE (semi-crystalline, unfilled):<\/strong> Rib thickness = 40-50% of wall. Minimum draft = 1.0 per side. Base radius = 0.20 \u00d7 wall (smaller radius to minimize mass accumulation). These materials will show sink if you exceed 50% \u2014 there is no magic processing trick to fix an oversized rib in PP.<\/p>\n<p><strong>For PA66-GF30 (glass-filled):<\/strong> Rib thickness = 55-75% of wall. Draft = 1.0-2.0 per side (glass fibers increase ejection friction). The reduced shrinkage allows thicker ribs, but you must gate to minimize flow-length variation across ribs, or warpage will be your problem instead of sink.<\/p>\n<p><strong>For <a href=\"https:\/\/zetarmold.com\/ko\/%ec%82%ac%ec%b6%9c-%ea%b8%88%ed%98%95-%ec%99%84%eb%b2%bd-%ea%b0%80%ec%9d%b4%eb%93%9c\/\">\uc0ac\ucd9c \uae08\ud615<\/a> designs using PC\/ABS blends:<\/strong> Treat these as amorphous \u2014 the PC component dominates the shrinkage behavior. Rib ratios of 55-65% of wall thickness are the sweet spot. These blends are common in consumer electronics housings where both strength and surface quality matter.<\/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=\"\ud50c\ub77c\uc2a4\ud2f1 \uc0ac\ucd9c \uc131\ud615 \ubd80\ud488 \ub9ac\ube0c \ubcf4\uc2a4 \ubc0f \ubcbd \uc124\uacc4 \ub2e4\uc774\uc5b4\uadf8\ub7a8\" 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;\">Rib boss wall diagram<\/figcaption><\/figure>\n<h2>\ub9ac\ube0c \uc124\uacc4 \ud504\ub85c\uc138\uc2a4\ub97c \ub2e8\uacc4\ubcc4\ub85c \uc5b4\ub5bb\uac8c \uc2e4\ud589\ud574\uc57c \ud558\ub294\uac00?<\/h2>\n<p>The rib design process is a controlled DFM sequence: define loads, lock resin data, size ribs, check spacing, simulate, then review with the molder. Here is the workflow we follow for every new part with structural ribs:<\/p>\n<p><strong>Step 1 \u2014 Define structural requirements:<\/strong> Determine the stiffness targets and load cases. Calculate the required moment of inertia, then work backward to estimate rib height and spacing rather than guessing.<\/p>\n<p><strong>Step 2 \u2014 Select material and lock shrinkage data:<\/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>Step 3 \u2014 Calculate rib proportions:<\/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>Step 4 \u2014 Check rib spacing:<\/strong> Maintain at least 2\u00d7 (preferably 3\u00d7) the wall thickness between adjacent ribs. Tighter spacing causes thin-wall filling problems and amplifies differential cooling.<\/p>\n<p><strong>Step 5 \u2014 Run Moldflow simulation:<\/strong> Simulate fill, pack, and warp. Look specifically at volumetric shrinkage at the rib-wall intersection and deflection results. This is where you catch problems before spending five figures on tooling.<\/p>\n<p><strong>Step 6 \u2014 DFM review with your molder:<\/strong> Share the simulation results with your injection molding partner. A good molder will challenge the rib layout based on their process window \u2014 packing pressure capability, cooling channel access, and ejection strategy all affect whether a rib design works in practice.<\/p>\n<h2>\uc2e4\uc81c \uc751\uc6a9 \uc0ac\ub840\uc5d0\uc11c \uc7ac\ub8cc\ubcc4 \ub9ac\ube0c \uc124\uacc4\ub294 \uc5b4\ub5bb\uac8c \ubcf4\uc5ec\uc9c0\ub098\uc694?<\/h2>\n<p>Real-world rib applications are useful because each material family exposes a different failure mode: sink, warp, ejection drag, or cooling imbalance. <strong>Automotive interior brackets (PP + Talc):<\/strong> We regularly produce dashboard support brackets in talc-filled PP. The talc reduces shrinkage slightly compared to unfilled PP, but the crystalline nature still demands ribs at 40-45% of wall thickness. A typical 2.0mm wall gets 0.8-0.9mm ribs with 1.0 draft per side.<\/p>\n<p><strong>Laptop housings (PC\/ABS):<\/strong> Consumer electronics demand Class A surfaces with zero visible sink. The amorphous PC\/ABS blend allows ribs at 60% of the 2.2mm wall (about 1.3mm base), and we use localized thin-wall sections behind cosmetic areas to further reduce sink visibility.<\/p>\n<p><strong>Industrial enclosures (PA66-GF30):<\/strong> Glass-filled nylon enclosures carry high structural loads. The ribs can be 65-70% of wall thickness thanks to low shrinkage, but warpage is the real enemy. We use balanced gate placement and fiber-orientation simulation to keep flat surfaces flat.<\/p>\n<p><strong>Material handling crates (HDPE):<\/strong> Deep-draw crates in HDPE use aggressive rib networks. The high shrinkage of HDPE (2.0-3.0%) means ribs must be thin \u2014 typically 40% of wall \u2014 but the non-cosmetic nature of these parts means moderate sink is acceptable, allowing designers to push the ratio slightly higher.<\/p>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>What is the maximum rib height allowed in injection molding?<\/h3>\n<p>Complete elimination of sink marks is extremely difficult for semi-crystalline materials when ribs exceed 45 percent of wall thickness. For amorphous polymers like PC and ABS, keeping ribs at or below 50 percent of wall thickness typically produces no visible sink on the cosmetic surface. Processing adjustments such as higher packing pressure, extended hold time, and increased cooling can reduce sink severity, but they cannot overcome a fundamentally oversized rib geometry. The most effective and reliable approach is to design the rib thickness correctly from the start based on the specific material family being used.<\/p>\n<h3>Can you eliminate sink marks on ribs completely?<\/h3>\n<p>Glass-filled materials allow thicker ribs at 55 to 75 percent of wall thickness due to the dramatically reduced volumetric shrinkage that glass fibers provide. However, they introduce significant anisotropic warpage risks because fibers orient in the flow direction and reduce shrinkage along that axis while doing little in the transverse direction. Unfilled semi-crystalline materials require thinner ribs at 40 to 50 percent to avoid sink marks, but their warpage behavior is more predictable. For glass-filled parts, always gate to minimize flow-length variation across the rib network, and run a dedicated warp simulation before committing to expensive tooling modifications.<\/p>\n<h3>How does rib design differ for glass-filled versus unfilled materials?<\/h3>\n<p>The base radius in rib design serves two critical and complementary functions. First, it reduces stress concentration at the sharp rib-wall junction, which directly improves the structural performance and fatigue life of the finished part under repeated loading. Second, it controls the amount of mass accumulation at that intersection point. The standard recommendation is a radius of 0.20 to 0.25 times the nominal wall thickness. Going larger adds excessive material and increases the risk of sink marks, while going smaller creates a stress riser that can lead to premature crack initiation and part failure under mechanical load.<\/p>\n<h3>What role does the base radius play in rib design?<\/h3>\n<p>\ub300\ubd80\ubd84\uc758 \uc2e4\uc81c \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc218\uc9c1 \ub9ac\ube0c\ub294 \ucd5c\uace0\uc758 \uac15\uc131 \ub300 \uc911\ub7c9 \ube44\uc728\uc744 \uc81c\uacf5\ud558\uba70 \uad6c\uc870\uc801 \ubcf4\uac15\uc744 \uc704\ud55c \uae30\ubcf8 \uc120\ud0dd\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uac01\uc9c4 \ub9ac\ube0c\ub098 \uace1\uc120 \ub9ac\ube0c\ub294 \uc18c\ube44\uc790 \uc81c\ud488\uc758 \ubbf8\uc801 \ud1b5\ud569\uc744 \uc704\ud574, \ub610\ub294 \uc790\ub3d9\ucc28 \ube0c\ub798\ud0b7\uacfc \uac19\uc740 \ubcf5\uc7a1\ud55c \ud558\uc911 \uc9c0\uc9c0 \ud615\uc0c1\uc5d0\uc11c \uc790\uc5f0\uc2a4\ub7ec\uc6b4 \uc751\ub825 \uacbd\ub85c\ub97c \ub530\ub974\uae30 \uc704\ud574 \ub54c\ub54c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ubc29\ud5a5\uc5d0 \uad00\uacc4\uc5c6\uc774 \uc911\uc694\ud55c \uc81c\uc57d \uc870\uac74\uc740 \ub3d9\uc77c\ud558\uac8c \uc720\uc9c0\ub429\ub2c8\ub2e4: \ub9ac\ube0c-\ubcbd \uc811\ud569\ubd80\uc758 \ub2e8\uba74 \ub450\uaed8\ub294 \uc2f1\ud06c \ub9c8\ud06c\ub97c \ubc29\uc9c0\ud558\uace0 \ubd80\ud488\uc774 \uc678\uad00 \ubc0f \uad6c\uc870\uc801 \uc694\uad6c \uc0ac\ud56d\uc744 \ubaa8\ub450 \ucda9\uc871\ud558\ub3c4\ub85d \uc7ac\ub8cc\ubcc4 \ub9ac\ube0c \ub300 \ubcbd \ub450\uaed8 \ube44\uc728\uc744 \uc900\uc218\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>\ub9ac\ube0c\ub294 \ud56d\uc0c1 \uba85\ubaa9 \ubcbd\uc5d0 \uc218\uc9c1\uc774\uc5b4\uc57c \ud558\ub098\uc694?<\/h3>\n<p>\ucf54\uc5b4 \uc81c\uac70\uc640 \ub9ac\ube0c \uc124\uacc4\ub294 \ubd80\ud488 \ubb34\uac8c\uc640 \uad6c\uc870\uc801 \uc131\ub2a5\uc744 \ucd5c\uc801\ud654\ud558\uae30 \uc704\ud55c \uc30d\uc744 \uc774\ub8e8\ub294 \uc804\ub7b5\uc73c\ub85c \ud568\uaed8 \uc791\ub3d9\ud569\ub2c8\ub2e4. \ucf54\uc5b4 \uc81c\uac70\ub294 \ubd80\ud488\uc758 \ub450\uaebc\uc6b4 \ubd88\ud544\uc694\ud55c \ubd80\ubd84\uc744 \uc81c\uac70\ud558\uace0 \ub354 \uc587\uc740 \ubcbd\uc73c\ub85c \ub300\uccb4\ud55c \ub2e4\uc74c \uc804\ub7b5\uc801\uc73c\ub85c \ubc30\uce58\ub41c \ub9ac\ube0c \ub124\ud2b8\uc6cc\ud06c\ub85c \ubcf4\uac15\ud569\ub2c8\ub2e4. \uc774 \uc870\ud569\uc740 \uc6d0\ub8cc \uc18c\ube44\ub97c \uc904\uc774\uace0 \ub0c9\uac01 \uc2dc\uac04\uc744 \ud06c\uac8c \ub2e8\ucd95\ud558\uba70 \uc804\ubc18\uc801\uc778 \uce58\uc218 \uc548\uc815\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \ud575\uc2ec \uc6d0\uce59\uc740 \uba3c\uc800 \ucf54\uc5b4 \uc81c\uac70\ub41c \ubcbd \ub450\uaed8\ub97c \uc124\uc815\ud55c \ub2e4\uc74c, \uc81c\uac70\ub41c \uc6d0\ub798 \ub450\uaebc\uc6b4 \ub2e8\uba74\uc774 \uc544\ub2cc \uc0c8\ub85c\uc6b4 \ub354 \uc587\uc740 \ubcbd \uce58\uc218\uc5d0 \ub300\ud55c \ube44\uc728\ub85c \ubaa8\ub4e0 \ub9ac\ube0c\uc758 \ud06c\uae30\ub97c \uc870\uc815\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h3>\ucf54\uc5b4 \uc81c\uac70\uc640 \ub9ac\ube0c \uc124\uacc4\ub294 \uc5b4\ub5bb\uac8c \ud568\uaed8 \uc791\ub3d9\ud558\ub098\uc694?<\/h3>\n<p>\uc131\ud615 \ubd80\ud488 \ud45c\uba74 \ubc0f \uadf8 \uadfc\ucc98\uc758 \uc720\ub9ac \uc12c\uc720\ub294 \uc774\uc81d\uc158 \uc911\uc5d0 \uc5f0\ub9c8\ub41c \uae08\ud615 \ubcbd\uc5d0 \ub300\ud574 \uadf9\ub3c4\ub85c \ub192\uc740 \ub9c8\ucc30\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4. \ud2b9\ud788 \ub9ac\ube0c \uad6c\uc870\uc5d0\uc11c\ub294 \ub9ac\ube0c\uac00 \uc81c\ud55c\ub41c \ub4dc\ub798\ud504\ud2b8 \ub9b4\ub9ac\ud504\ub97c \uac00\uc9c4 \uae4a\uace0 \uc881\uc740 \uce90\ube44\ud2f0\ub97c \ud615\uc131\ud558\uae30 \ub54c\ubb38\uc5d0 \uc774 \ub9c8\ucc30 \ubb38\uc81c\uac00 \uc99d\ud3ed\ub429\ub2c8\ub2e4. \ucda9\ubd84\ud55c \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4(\uc77c\ubc18\uc801\uc73c\ub85c \uc720\ub9ac \ucda9\uc804 \uc7ac\ub8cc\uc758 \uacbd\uc6b0 \uce21\uba74\ub2f9 1.0~2.0\ub3c4, \ube44\ucda9\uc804 \ub4f1\uae09\uc758 \uacbd\uc6b0 0.5~1.0\ub3c4)\uac00 \uc5c6\uc73c\uba74 \ub9ac\ube0c\uac00 \uc774\uc81d\uc158 \uc911\uc5d0 \uae01\ud788\uac70\ub098 \uad6c\ubd80\ub7ec\uc9c0\uac70\ub098 \ud30c\uc190\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ubd80\ud488\uc758 \uc678\uad00\uacfc \uad6c\uc870\ub97c \uc190\uc0c1\uc2dc\ud0ac \ubfd0\ub9cc \uc544\ub2c8\ub77c \uc218\ucc9c \ubc88\uc758 \uc0dd\uc0b0 \uc8fc\uae30\ub97c \uac70\uccd0 \uae08\ud615 \ud45c\uba74\uc744 \uc5f4\ud654\uc2dc\ud0ac \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\uc720\ub9ac \uc12c\uc720 \uac15\ud654 \uc7ac\ub8cc\ub294 \uc65c \ub9ac\ube0c\uc5d0 \ub354 \ud070 \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4\uac00 \ud544\uc694\ud55c\uac00\uc694?<\/h3>\n<p>\uc77c\ubc18\uc801\uc778 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uac00\uc774\ub4dc\ub77c\uc778\uc73c\ub85c, \ub9ac\ube0c \ub192\uc774\ub294 \uae30\uc900 \ubcbd \ub450\uaed8\uc758 \uc138 \ubc30\ub97c \ucd08\uacfc\ud558\uc9c0 \uc54a\uc544\uc57c \ud569\ub2c8\ub2e4. \ub354 \ub192\uc740 \ub9ac\ube0c\ub294 \uc6a9\uc735 \ud50c\ub77c\uc2a4\ud2f1\uc774 \ube60\ub974\uac8c \ub0c9\uac01\ub418\uc5b4 \uacf5\uae30\ub97c \uac00\ub450\uac70\ub098 \ub2e8\uc1fc\ud2b8\ub97c \uc77c\uc73c\ud0ac \uc218 \uc788\ub294 \uc881\uace0 \uae4a\uc740 \ucc44\ub110\ub85c \ud758\ub7ec \ub4e4\uc5b4\uac00\uc57c \ud558\uae30 \ub54c\ubb38\uc5d0 \ucda9\uc804 \ubb38\uc81c\ub97c \uc77c\uc73c\ud0b5\ub2c8\ub2e4. \uad6c\uc870 \ubd84\uc11d\uc5d0\uc11c \ubcbd \ub192\uc774\uc758 \uc138 \ubc30\uc778 \ud45c\uc900 \ub9ac\ube0c\uac00 \uc81c\uacf5\ud560 \uc218 \uc788\ub294 \uac83\ubcf4\ub2e4 \ub354 \ud070 \uac15\uc131\uc774 \ud544\uc694\ud55c \uacbd\uc6b0, \ub354 \ub098\uc740 \uc811\uadfc \ubc29\uc2dd\uc740 \uc801\uc808\ud55c \uac04\uaca9\uc744 \ub450\uace0 \uc5ec\ub7ec \uac1c\uc758 \ub354 \uc9e7\uc740 \ub9ac\ube0c\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub807\uac8c \ud558\uba74 \ubcf4\uac15\uc774 \ub354 \uade0\uc77c\ud558\uac8c \ubd84\ubc30\ub418\uace0 \uc0ac\ucd9c \uc131\ud615 \uacf5\uc815 \uc911 \uc548\uc815\uc801\uc778 \ucda9\uc804\uc774 \uc720\uc9c0\ub429\ub2c8\ub2e4.<\/p>\n<p>\ub9ac\ube0c \uc124\uacc4\uc5d0 \ub300\ud55c \uc804\ubb38 DFM \uac80\ud1a0\uac00 \ud544\uc694\ud558\uc2e0\uac00\uc694? ZetarMold\uc758 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ud300\uc740 \ubd80\ud488 \ud615\uc0c1\uc744 \ubd84\uc11d\ud558\uace0, \uc7ac\ub8cc\ubcc4 \ub9ac\ube0c \ube44\uc728\uc744 \uad8c\uc7a5\ud558\uba70, \uae08\ud615 \ud22c\uc790 \uc804 Moldflow \uc2dc\ubbac\ub808\uc774\uc158\uc744 \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. 400\uc885 \uc774\uc0c1\uc758 \uc7ac\ub8cc\uc5d0 \uac78\uce5c 20\ub144 \uc774\uc0c1\uc758 \uacbd\ud5d8\uc73c\ub85c, \uc6b0\ub9ac\ub294 \uc124\uacc4 \ubb38\uc81c\ub97c \uc870\uae30\uc5d0 \ubc1c\uacac\ud558\uc5ec \uc2dc\uac04\uacfc \uae08\ud615 \ube44\uc6a9\uc744 \uc808\uc57d\ud574 \ub4dc\ub9bd\ub2c8\ub2e4.<\/p>\n<p>\ubb34\ub8cc \uacac\uc801 \ubc0f DFM \ubd84\uc11d \uc694\uccad\ud558\uae30 \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=\"\uc0ac\ucd9c \uc131\ud615\uc744 \uc704\ud55c \ub192\uace0 \ub2e4\uc911 \ub9ac\ube0c \uc124\uacc4 \ube44\uad50\" 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;\">\ub2e4\uc911 \ub9ac\ube0c \uc124\uacc4 \ube44\uad50<\/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 \uac00\uc774\ub4dc\ub77c\uc778:<\/strong> DFM \uac00\uc774\ub4dc\ub77c\uc778\uc740 \uc0ac\ucd9c \uc131\ud615\uc758 \uc81c\uc870 \uac00\ub2a5\uc131\uc744 \uc704\ud55c \ubcbd \ub450\uaed8, \ub9ac\ube0c, \ubcf4\uc2a4 \ubc0f \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4\ub97c \ud3ec\ud568\ud55c \ud3ec\uad04\uc801\uc778 \uc124\uacc4 \uc9c0\uce68\uc744 \uac00\ub9ac\ud0b5\ub2c8\ub2e4. <a href=\"#fnref1:1\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:2\">\n<p><strong>\uc218\ucd95\ub960 \ud45c\uc900:<\/strong> ISO 294-4\ub294 \uc5f4\uac00\uc18c\uc131 \uc131\ud615 \uc7ac\ub8cc\uc758 \uc218\ucd95\ub960 \uce21\uc815 \ubc29\ubc95\uc744 \uaddc\uc815\ud558\ub294 \uad6d\uc81c \ud45c\uc900\uc744 \uac00\ub9ac\ud0b5\ub2c8\ub2e4. <a href=\"#fnref1:2\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:3\">\n<p><strong>Moldflow simulation:<\/strong> Moldflow \ubd84\uc11d\uc740 \uc81c\uc870 \uc804 \ucda9\uc804 \ud328\ud134, \uc218\ucd95, \ub4a4\ud2c0\ub9bc \ubc0f \uc7a0\uc7ac\uc801 \uacb0\ud568\uc744 \uc608\uce21\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc5c5\uacc4 \ud45c\uc900 \uc2dc\ubbac\ub808\uc774\uc158 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uac00\ub9ac\ud0b5\ub2c8\ub2e4. <a href=\"#fnref1:3\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>\ub9ac\ube0c \uc124\uacc4\ub294 \uc0ac\ucd9c \uc131\ud615\uc5d0\uc11c \ub2e8\uc21c\ud55c \uae30\ud558\ud559\uc801 \uaddc\uce59\uc774 \uc544\ub2cc, \uc7ac\ub8cc\uc758 \uac70\ub3d9 \ubb38\uc81c\uc785\ub2c8\ub2e4. ABS, PC, PP, \ub098\uc77c\ub860, POM, \uae00\ub77c\uc2a4 \ucda9\uc804 \uc218\uc9c0 \ub4f1\uc740 \uc218\ucd95\ub960, \ub0c9\uac01 \ubc29\uc2dd, \uc751\ub825 \uc800\ud56d\uc774 \uac01\uae30 \ub2e4\ub974\uae30 \ub54c\ubb38\uc5d0, \ud55c \ud3f4\ub9ac\uba38\uc5d0\uc11c \ud6a8\uacfc\uc801\uc778 \ub9ac\ube0c\uac00 \ub2e4\ub978 \uc7ac\ub8cc\uc5d0\uc11c\ub294 \uc2f1\ud06c \ub9c8\ud06c, \ub4a4\ud2c0\ub9bc, \uc774\uc81d\uc158 \uc190\uc0c1\uc744 \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ub54c\ubb38\uc5d0 \ub9ac\ube0c\uc758 \ub450\uaed8, \ub192\uc774, [\u2026]<\/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\/ko\/wp-json\/wp\/v2\/posts\/51381"}],"collection":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/comments?post=51381"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/posts\/51381\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/media\/53248"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/media?parent=51381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/categories?post=51381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/tags?post=51381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}