{"id":2860,"date":"2026-08-07T10:41:59","date_gmt":"2026-08-07T02:41:59","guid":{"rendered":"http:\/\/0"},"modified":"2026-08-04T17:52:24","modified_gmt":"2026-08-04T09:52:24","slug":"why-co-injection-molding-lowers-material-packaging-costs","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/ko\/blog\/why-co-injection-molding-lowers-material-packaging-costs\/","title":{"rendered":"\uacf5\ub3d9 \uc0ac\ucd9c \uc131\ud615\uc774 \uc7ac\ub8cc \ud3ec\uc7a5 \ube44\uc6a9\uc744 \ub0ae\ucd94\ub294 \uc774\uc720"},"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\">\ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uad6c\uc870\uc801 \ud558\uc6b0\uc9d5\uacfc \ub2e4\uae30\ub2a5 \ud50c\ub77c\uc2a4\ud2f1 \ud558\ub4dc\uc6e8\uc5b4\ub97c \uc81c\uc870\ud558\ub824\uba74 \uae68\ub057\ud55c \ud45c\uba74 \ubbf8\ud559\uacfc \ub0ae\uc740 \uc6d0\uc790\uc7ac \ube44\uc6a9\uc758 \uade0\ud615\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \ubc84\uc9c4 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc218\uc9c0\ub97c \uc0ac\uc6a9\ud55c \ub2e8\uc77c \uc7ac\ub8cc \uace0\uccb4 \ubd80\ud488\uc740 \uc0dd\uc0b0 \ube44\uc6a9\uc744 \uc99d\uac00\uc2dc\ud0a4\ub294 \ubc18\uba74, 100% \uc7ac\ud65c\uc6a9 \ud3f4\ub9ac\uba38\ub97c \uc0ac\uc6a9\ud558\uba74 \ud45c\uba74 \uc678\uad00\uacfc \ucda9\uaca9 \uac15\ub3c4\uac00 \uc800\ud558\ub429\ub2c8\ub2e4. \uc804\ubb38\uc801\uc778 <a href=\"https:\/\/www.jcinjectionmolding.com\/ko\/service\/custom-mold-making\/\"><strong>\ucf54\uc778\uc81d\uc158 \ubab0\ub529<\/strong><\/a> \uc744 \uc9c0\uc815\ud558\uba74 \uc800\ube44\uc6a9 \ub610\ub294 \uc7ac\ud65c\uc6a9 \ud3f4\ub9ac\uba38 \ucf54\uc5b4\ub97c \uace0\uc21c\ub3c4 \ubc84\uc9c4 \uc678\ubd80 \uc2a4\ud0a8 \ub0b4\ubd80\uc5d0 \ucea1\uc290\ud654\ud558\uc5ec \uc774\ub7ec\ud55c \uc0c1\ucda9\ub418\ub294 \uc694\uad6c \uc0ac\ud56d\uc744 \ud574\uacb0\ud569\ub2c8\ub2e4. \uc8fc\uccad\uc740 \uace0\uac1d\uc758 \uae30\uc220 CAD \ub3c4\uba74\uc5d0 \ub530\ub77c \ub2e4\uce35 \uad6c\uc870 \ubd80\ud488\uc744 \uc5c4\uaca9\ud788 \uc81c\uacf5\ud558\ub294 \ud2b9\uc218 \ub2e4\uc911 \ubc30\ub7f4 \ucf54\uc778\uc81d\uc158 \uae30\uacc4\ub97c \uc6b4\uc601\ud569\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2863\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-molding-machine-barrels.webp\" alt=\"co-injection-molding-machine-barrels\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-molding-machine-barrels.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-molding-machine-barrels-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-molding-machine-barrels-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-molding-machine-barrels-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\">\ubaa9\ucc28<\/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=\"#sandwich-molding\">1. \uc0cc\ub4dc\uc704\uce58 \ubab0\ub529: \uc7ac\ud65c\uc6a9\/\uc7ac\ubd84\uc1c4 \ucf54\uc5b4\uac00 \uc788\ub294 \ubc84\uc9c4 \uc678\ubd80 \uc2a4\ud0a8<\/a><\/li>\n<li style=\"margin-bottom: 12px\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#viscosity-matching\">2. \uc774\uc911 \uc0ac\ucd9c\uc5d0\uc11c \uc7ac\ub8cc \uc911\uac04\uce35 \uc811\ucc29 \ubc0f \uc810\ub3c4 \ub9e4\uce6d<\/a><\/li>\n<li style=\"margin-bottom: 0\"><a style=\"color: #0056b3;text-decoration: none;font-size: 17px;font-weight: 500\" href=\"#emi-shielded\">3. \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uad6c\uc870 \ud328\ub110 \ubc0f EMI \ucc28\ud3d0 \uc778\ud074\ub85c\uc800<\/a><\/li>\n<\/ul>\n<\/section>\n<p><!-- Section 1 --><\/p>\n<section id=\"sandwich-molding\" 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\">\uc0cc\ub4dc\uc704\uce58 \ubab0\ub529: \uc7ac\ud65c\uc6a9\/\uc7ac\ubd84\uc1c4 \ucf54\uc5b4\uac00 \uc788\ub294 \ubc84\uc9c4 \uc678\ubd80 \uc2a4\ud0a8<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2865\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/dual-concentric-injection-nozzle.webp\" alt=\"dual-concentric-injection-nozzle\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/dual-concentric-injection-nozzle.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/dual-concentric-injection-nozzle-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/dual-concentric-injection-nozzle-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/dual-concentric-injection-nozzle-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\">\ub2e4\uce35 \uac00\uacf5\uc744 \uc2e4\ud589\ud558\ub824\uba74 \ud2b9\uc218 \uc774\uc911 \ub3d9\uc2ec \ub178\uc990 \ub610\ub294 \uc21c\ucc28 \ub9e4\ub2c8\ud3f4\ub4dc \ubc38\ube0c\ub97c \ud1b5\ud55c <strong>\uc0cc\ub4dc\uc704\uce58 \ubab0\ub529<\/strong> \uae30\uc220\uc744 \ud65c\uc6a9\ud569\ub2c8\ub2e4. 1\ub2e8\uacc4 \uc0ac\ucd9c\uc740 \ubc84\uc9c4 \uc2a4\ud0a8 \uc218\uc9c0\ub97c \ub3c4\uc785\ud558\uc5ec \uce90\ube44\ud2f0 \ubcbd\uc744 \ucc44\uc6cc \uae68\ub057\ud55c \uc678\ubd80 \ud45c\uba74\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. 2\ub2e8\uacc4 \uc0ac\ucd9c\uc740 \ucf54\uc5b4 \uc7ac\ub8cc\ub97c \uc2a4\ud0a8 \uba5c\ud2b8\uc758 \ub530\ub73b\ud55c \uc911\uc2ec\uc5d0 \uc9c1\uc811 \ub3c4\uc785\ud558\uc5ec \ub0b4\ubd80\uc5d0\uc11c \ucf54\uc5b4\ub97c \ud33d\ucc3d\uc2dc\ud0b5\ub2c8\ub2e4. <strong>\uc7ac\ubd84\uc1c4 \ucf54\uc5b4<\/strong> \ub610\ub294 \uc7ac\ud65c\uc6a9 \ud3f4\ub9ac\uba38\ub97c \ubc84\uc9c4 \uc2a4\ud0a8 \ub0b4\ubd80\uc5d0 \ub123\uc73c\uba74 \ud45c\uba74 \ub9c8\uac10\uc744 \ubcc0\uacbd\ud558\uc9c0 \uc54a\uace0 \uc6d0\uc790\uc7ac \ube44\uc6a9\uc744 \ucd5c\ub300 30%~50% \uc808\uac10\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ucd5c\uc885 \uc2a4\ud0a8 \ud37c\uc9c0 \uc0ac\ucd9c\uc740 \uc2a4\ud504\ub8e8 \uac8c\uc774\ud2b8\ub97c \ubc84\uc9c4 \uc218\uc9c0\ub85c \ubc00\ubd09\ud558\uc5ec \uc678\ubd80 \ud45c\uba74\uc5d0 \uc7ac\ud65c\uc6a9 \uc7ac\ub8cc\uac00 \ub178\ucd9c\ub418\uc9c0 \uc54a\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n<p><!-- Numbered List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">\ucf54\uc778\uc81d\uc158 \uc0cc\ub4dc\uc704\uce58 \uc2dc\ud000\uc2a4 \ub2e8\uacc4\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/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>\ubc84\uc9c4 \uc2a4\ud0a8 \uc0ac\ucd9c<\/strong>\u2014\uace0\uc21c\ub3c4 \uc678\ud53c \uc218\uc9c0 \uc8fc\uc785\uc73c\ub85c \ucc28\uac00\uc6b4 \uae08\ud615 \ubcbd\uba74\uc5d0 \uc644\ubcbd\ud55c \ud45c\uba74\uce35\uc744 \ud615\uc131\ud569\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\ucf54\uc5b4 \uba5c\ud2b8 \ubcc0\uc704<\/strong>\u2014\uc911\uc559 \ub9e4\ub2c8\ud3f4\ub4dc\ub97c \ud1b5\ud574 \ucf54\uc5b4 \uc218\uc9c0\ub97c \uc8fc\uc785\ud558\uc5ec \uc0cc\ub4dc\uc704\uce58 \uce35\uc744 \uade0\uc77c\ud558\uac8c \ud33d\ucc3d\uc2dc\ud0b5\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uac8c\uc774\ud2b8 \uc2a4\ud0a8 \ud37c\uc9d5<\/strong>\u2014\uc9e7\uc740 \ucd5c\uc885 \uc0f7\uc758 \ubc84\uc9c4 \uc2a4\ud0a8 \uc218\uc9c0\ub97c \uc8fc\uc785\ud558\uc5ec \uac8c\uc774\ud2b8\ub97c \ubc00\ubd09\ud558\uace0 \ucf54\uc5b4 \ub178\ucd9c\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>\uce90\ube44\ud2f0 \uc555\ub825 \ud328\ud0b9<\/strong>\u2014\ud328\ud0b9 \uc555\ub825\uc744 \uc720\uc9c0\ud558\uc5ec \uade0\uc77c\ud55c \ubc00\ub3c4\ub97c \ubcf4\uc7a5\ud558\uace0 \uc2f1\ud06c \ub9c8\ud06c \ud615\uc131\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n<\/section>\n<p><!-- Section 2 --><\/p>\n<section id=\"viscosity-matching\" 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\">\uc774\uc911 \uc0ac\ucd9c\uc5d0\uc11c\uc758 \uc7ac\ub8cc \uce35\uac04 \uc811\ucc29 \ubc0f \uc810\ub3c4 \ub9e4\uce6d<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2864\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-polymer-boundary-layer.webp\" alt=\"co-injection-polymer-boundary-layer\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-polymer-boundary-layer.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-polymer-boundary-layer-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-polymer-boundary-layer-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/co-injection-polymer-boundary-layer-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\">\uc548\uc815\uc801\uc778 \uc0cc\ub4dc\uc704\uce58 \uce35\uc744 \ub2ec\uc131\ud558\ub824\uba74 \uc2a4\ud0a8\uacfc \ucf54\uc5b4 \uba5c\ud2b8 \ud750\ub984 \uc0ac\uc774\uc758 \uc815\ubc00\ud55c <strong>\uc810\ub3c4 \ub9e4\uce6d<\/strong> \uc774 \ud544\uc694\ud569\ub2c8\ub2e4. 20%\ub97c \ucd08\uacfc\ud558\ub294 \uba5c\ud2b8 \uc810\ub3c4 \ucc28\uc774\ub294 \ucf54\uc5b4 \uc7ac\ub8cc\uac00 \uc2a4\ud0a8\uc744 \ub6ab\uace0 \ub098\uc640 <strong>\uc2a4\ud0a8 \ube0c\ub808\uc774\ud06c\uc2a4\ub8e8<\/strong>. \ub97c \uc720\ubc1c\ud569\ub2c8\ub2e4. \uc2a4\ud0a8 \ube0c\ub808\uc774\ud06c\uc2a4\ub8e8\ub294 \ubd80\ud488 \ud45c\uba74\uc5d0 \ub0b4\ubd80 \ucf54\uc5b4 \uc7ac\ub8cc\ub97c \ub178\ucd9c\uc2dc\ucf1c \uc678\uad00 \ubd88\ub7c9\uc744 \ucd08\ub798\ud569\ub2c8\ub2e4. <strong>PC\/ABS<\/strong> \ub610\ub294 <a href=\"https:\/\/www.jcinjectionmolding.com\/ko\/materials\/polypropylene-pp\/\"><strong>\ud3f4\ub9ac\ud504\ub85c\ud544\ub80c(PP)<\/strong><\/a> \uacfc \uac19\uc740 \ud638\ud658 \uac00\ub2a5\ud55c \uc5f4\uac00\uc18c\uc131 \uc218\uc9c0\ub97c \uc120\ud0dd\ud558\uba74 \uce35\uac04 \uacbd\uacc4\ub97c \ub530\ub77c \uac15\ub825\ud55c \ud654\ud559\uc801 \uc735\ud569\uc774 \ubcf4\uc7a5\ub429\ub2c8\ub2e4. \uc801\uc808\ud55c \uc628\ub3c4 \ud504\ub85c\ud30c\uc77c\ub9c1\uc740 \uc720\uc0ac\ud55c \uc720\ubcc0\ud559\uc801 \ud750\ub984 \uc120\ub2e8\uc744 \uc720\uc9c0\ud558\uc5ec \ucf54\uc5b4\uac00 \uc678\ubd80 \uc2a4\ud0a8 \ub0b4\uc5d0\uc11c \ub3d9\uc2ec\uc744 \uc720\uc9c0\ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n<p><!-- Table 1: Co-Injection Material Pairs 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\">\uc678\ubd80 \uc2a4\ud0a8 \uc7ac\uc9c8<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\ucea1\uc290\ud654 \ucf54\uc5b4 \uc7ac\uc9c8<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\uc810\ub3c4 \ube44\uc728 \ubaa9\ud45c<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\ucf54\uc5b4 \ubd80\ud53c \ube44\uc728 (%)<\/th>\n<th style=\"padding: 16px;border: 1px solid #dee2e6;font-weight: 600;color: #111111\">\uc8fc\uc694 \uae30\ub2a5\uc801 \uc774\uc810<\/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\">\ubc84\uc9c4 PC\/ABS (Bayblend)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\uc7ac\ud65c\uc6a9 PC\/ABS + \ud0c4\uc18c \uc12c\uc720<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">1.0 : 1.1<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">35% \u2013 45%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\ub0b4\uc7a5 EMI\/RFI \ucc28\ud3d0 \ubc0f \ub0ae\uc740 \uc218\uc9c0 \ube44\uc6a9<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\ubc84\uc9c4 PP (SABIC PP 570P)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\uc18c\ube44 \ud6c4 \uc7ac\ud65c\uc6a9 PP<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">1.0 : 1.05<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">40% \u2013 50%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\uc9c0\uc18d \uac00\ub2a5\ud55c \uad6c\uc870 \ud328\ub110 \ubc0f \ud314\ub808\ud2b8<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6\">\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\ubc84\uc9c4 ABS (Polylac PA-757)<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">\uc911\ucda9\uc804 \uc7ac\ubd84\uc1c4 ABS<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">1.0 : 1.15<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">30% \u2013 40%<\/td>\n<td style=\"padding: 16px;border: 1px solid #dee2e6;color: #333333\">Thick appliance housings with high stiffness<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<p><!-- Section 3 --><\/p>\n<section id=\"emi-shielded\" 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\">Cost-Effective Structural Panels &amp; EMI Shielded Enclosures<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2866\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/emi-shielded-plastic-enclosure.webp\" alt=\"emi-shielded-plastic-enclosure\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/emi-shielded-plastic-enclosure.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/emi-shielded-plastic-enclosure-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/emi-shielded-plastic-enclosure-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/emi-shielded-plastic-enclosure-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\">Co-injection processing enables unique functional material combinations impossible with single-shot molding. Electronic housings incorporate a <strong>carbon-filled conductive core<\/strong> inside a cosmetic PC\/ABS outer skin, providing built-in EMI\/RFI shielding without secondary conductive painting. Industrial transport pallets and structural panels encapsulate low-cost post-consumer recycled resin inside a weather-resistant virgin PP outer shell. Multi-layer encapsulation satisfies strict environmental sustainability criteria while lowering total part manufacturing expenses.<\/p>\n<p><!-- Bulleted List --><\/p>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 16px\">Key industry co-injection advantages include:<\/p>\n<ul style=\"list-style-type: disc;padding-left: 24px;font-size: 18px;line-height: 1.8em;margin-bottom: 24px\">\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Raw material cost reduction<\/strong>\u2014Encapsulating up to 50% recycled or regrind core material reduces overall resin expenditure.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Built-in conductive shielding<\/strong>\u2014Enclosing conductive carbon black cores delivers internal EMI attenuation without secondary painting.<\/li>\n<li style=\"margin-bottom: 12px;text-align: left\"><strong>Pristine surface appearance<\/strong>\u2014Hiding discolored or heavily filled core resins behind a virgin skin maintains A-class cosmetic standards.<\/li>\n<\/ul>\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\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38 (FAQ)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2861\" src=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-sandwich-skin-thickness.webp\" alt=\"measuring-sandwich-skin-thickness\" width=\"1376\" height=\"768\" srcset=\"https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-sandwich-skin-thickness.webp 1376w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-sandwich-skin-thickness-300x167.webp 300w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-sandwich-skin-thickness-1024x572.webp 1024w, https:\/\/www.jcinjectionmolding.com\/wp-content\/uploads\/2026\/08\/measuring-sandwich-skin-thickness-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\">What is the difference between co injection molding and two shot (2K) molding?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Co injection molding injects two different material streams simultaneously or sequentially through a single gate to form a multi-layer sandwich structure (skin and core). Two shot molding injects two materials into distinct sections of a part using a rotating mold platen.<\/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\">How much recycled material can be encapsulated inside a co-injection core?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Core ratios typically account for 30% to 50% of total part weight depending on geometry and wall thickness. Maintaining a minimum outer skin thickness of 1.0 mm to 1.5 mm prevents core breakthrough and preserves surface strength.<\/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\">How do you prevent core breakthrough in sandwich molding?<\/h3>\n<p style=\"font-size: 18px;line-height: 1.8em;text-align: left;margin-bottom: 24px\">Preventing core breakthrough requires matching the melt viscosity of skin and core polymers within a 15% range. Controlling initial skin shot volume and injection speed ensures a uniform boundary layer before core resin enters.<\/p>\n<\/div>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Manufacturing cost-effective structural enclosures and multi-functional plastic hardware requires balancing pristine surface aesthetics with low raw material expenses. Solid single-material components using virgin engineering resins drive up production costs, whereas using 100% recycled polymers compromises surface cosmetics and impact strength. Specifying professional co injection molding resolves these conflicting requirements by encapsulating a low-cost or recycled [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2862,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts\/2860","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/comments?post=2860"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/posts\/2860\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media\/2862"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media?parent=2860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/categories?post=2860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/tags?post=2860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}