{"id":9845,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d4917-2\/"},"modified":"2026-03-12T10:37:47","modified_gmt":"2026-03-12T02:37:47","slug":"astm-d4917","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/ko\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\uc885\uc774 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \ub9c8\ucc30 \uacc4\uc218 \uc774\ud574\ud558\uae30<\/h2>\n\n\n\n<p><strong data-start=\"1472\" data-end=\"1505\">\ub9c8\ucc30 \uacc4\uc218(COF)<\/strong> \ub294 \ub450 \ud45c\uba74 \uc0ac\uc774\uc758 \uc6c0\uc9c1\uc784\uc5d0 \ub300\ud55c \uc800\ud56d\uc744 \ubc18\uc601\ud558\ub294 \uc911\uc694\ud55c \ub9e4\uac1c\ubcc0\uc218\uc785\ub2c8\ub2e4. \uc885\uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc774 \uac12\uc740 \ud55c \uc7a5\uc774 \ub2e4\ub978 \uc7a5 \uc704\ub85c \ubbf8\ub044\ub7ec\uc9c0\ub294 \ubc29\uc2dd\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc774 \uac12\uc740 <strong data-start=\"1674\" data-end=\"1688\">\uc815\uc801 COF<\/strong> \ub294 \uc6c0\uc9c1\uc784\uc744 \uc2dc\uc791\ud558\ub294 \ub370 \ud544\uc694\ud55c \ud798\uc744 \uacb0\uc815\ud558\uace0 <strong data-start=\"1752\" data-end=\"1767\">\uc6b4\ub3d9 COF<\/strong> \ub294 \uc77c\uc815\ud55c \uc18d\ub3c4\ub85c \uc6c0\uc9c1\uc784\uc744 \uc720\uc9c0\ud558\ub294 \ub370 \ud544\uc694\ud55c \ud798\uc744 \uce21\uc815\ud569\ub2c8\ub2e4. ASTM D4917\uc740 \uc218\ud3c9 \uc2ac\ub77c\uc774\ub529 \ubaa8\uc158\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub450 \uac00\uc9c0 \uce21\uc815\uc774 \ubaa8\ub450 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud14c\uc2a4\ud2b8 \uc7a5\ube44 \ubc0f \uc0d8\ud50c \uc900\ube44 \uace0\ub824 \uc0ac\ud56d<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"\uc885\uc774 \ub9c8\ucc30 \uacc4\uc218 \ud14c\uc2a4\ud2b8 \uc9c4\ud589 \uc911\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Iq-UFiGqF64?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p>ASTM D4917\uc5d0 \ub530\ub77c \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 COF \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud558\ub824\uba74 \uc804\ubb38 \uc7a5\ube44\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. A <strong data-start=\"3843\" data-end=\"3877\">\uc815\uc18d \uc6b4\ub3d9 \uc18d\ub3c4 \ud14c\uc2a4\ud130<\/strong>, \ub85c\ub4dc\uc140\uc774 \uc7a5\ucc29\ub418\uc5b4 \uc788\uace0 \ubd84\ub2f9 150 \u00b1 30mm\uc758 \uc18d\ub3c4\ub85c \uc370\ub9e4\ub97c \ub2f9\uae38 \uc218 \uc788\ub294 \uc370\ub9e4\uac00 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc815\ud655\ud55c \uacb0\uacfc\ub97c \uc5bb\uc73c\ub824\uba74 \ud45c\uc900 \ub300\uae30 \uc870\uac74(TAPPI T402 \ub610\ub294 ASTM D685\uc5d0 \ub530\ub77c)\uc5d0\uc11c \uc0d8\ud50c\uc744 \uc0ac\uc804 \uc870\uc815\ud558\uace0 \uae30\uacc4 \ubc29\ud5a5\uacfc \uc785\uc790 \ubc29\ud5a5\uc5d0 \ub9de\ucdb0 \uc900\ube44\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ub2e4\uc74c\uc744 \uad8c\uc7a5\ud569\ub2c8\ub2e4. <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 \ub9c8\ucc30 \uacc4\uc218 \uc2dc\ud5d8\uae30<\/strong>, \ub294 ASTM D4917 \ubc0f ISO 8295\uc758 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud558\ub3c4\ub85d \uc124\uacc4\ub41c \uace0\uc815\ubc00 \uc218\ud3c9\uba74 \uce21\uc815\uae30\uc785\ub2c8\ub2e4. \ub514\uc9c0\ud138 \uc81c\uc5b4, \uc870\uc815 \uac00\ub2a5\ud55c \uc2ac\ub808\ub4dc \uc635\uc158, \uc790\ub3d9\ud654\ub41c \ud798 \uce21\uc815 \uae30\ub2a5\uc744 \uac16\ucd94\uace0 \uc788\uc5b4 \uc815\uc801 \ubc0f \ub3d9\uc801 COF \ud14c\uc2a4\ud2b8 \ubaa8\ub450\uc5d0\uc11c \uc815\ud655\ud558\uace0 \uc7ac\ud604 \uac00\ub2a5\ud55c \uacb0\uacfc\ub97c \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc885\uc774 \uc815\uc801 \ubc0f \ub3d9\uc801 \ub9c8\ucc30 \ud14c\uc2a4\ud2b8 \uc124\uba85<\/h2>\n\n\n\n<p>ASTM D4917\uc5d0 \ub530\ub978 \uc885\uc774 \ud14c\uc2a4\ud2b8\ub294 \ud3c9\ud3c9\ud55c \uc218\ud3c9\uba74\uc5d0 \ud55c \uc7a5\uc758 \uc885\uc774\ub97c \ub193\uace0 \uadf8 \uc704\uc5d0 \ub3d9\uc77c\ud55c \ub2e4\ub978 \uc885\uc774\ub97c \ub193\ub294 \ubc29\uc2dd\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4. \uc0c1\ub2e8 \uc2dc\ud2b8 \uc704\uc5d0 \uc370\ub9e4(\ubcf4\ud1b5 \uace0\ubb34\uba74)\ub97c \ub193\uc2b5\ub2c8\ub2e4. \uc370\ub9e4\ub97c \ub2f9\uae30\uba74 \uc6c0\uc9c1\uc784\uc744 \uc2dc\uc791\ud558\ub294 \ub370 \ud544\uc694\ud55c \ud798(\uc815\uc801 \ub9c8\ucc30)\uacfc \uc6c0\uc9c1\uc784\uc744 \uacc4\uc18d\ud558\ub294 \ub370 \ud544\uc694\ud55c \ud798(\uc6b4\ub3d9 \ub9c8\ucc30)\uc774 \uce21\uc815\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774\uac83 <strong data-start=\"2334\" data-end=\"2368\">\uc885\uc774 \uc6b4\ub3d9 \ub9c8\ucc30 \ud14c\uc2a4\ud2b8<\/strong> \uadf8\ub9ac\uace0 <strong data-start=\"2373\" data-end=\"2406\">\uc885\uc774 \uc815\uc801 \ub9c8\ucc30 \ud14c\uc2a4\ud2b8<\/strong> \ub294 \uace0\uc18d \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc6a9\uc9c0 \ubd84\ub9ac, \uae09\uc9c0 \uc77c\uad00\uc131 \ubc0f \uc778\uc1c4 \uc815\ub82c\uc744 \uc774\ud574\ud558\ub294 \ub370 \uc911\uc694\ud55c \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc778\uc1c4 \ubc0f \ube44\ucf54\ud305 \uc6a9\uc9c0 COF \ud14c\uc2a4\ud2b8\uc5d0\uc11c ASTM D4917\uc758 \uc751\uc6a9 \ubd84\uc57c<\/h2>\n\n\n\n<p>\uadf8\ub9cc\ud07c <strong data-start=\"2613\" data-end=\"2640\">\uc778\uc1c4 \uc6a9\uc9c0 COF \ud14c\uc2a4\ud2b8<\/strong> \uc740 \ub9c8\ucc30 \uc77c\uad00\uc131\uc774 \uc6a9\uc9c0 \ud55c \uc7a5\uc758 \uc774\uc1a1 \uc815\ud655\ub3c4\ub97c \ubcf4\uc7a5\ud558\uace0 \uc6a9\uc9c0 \uac78\ub9bc\uc774\ub098 \uc624\uc774\uc1a1\uc744 \uc904\uc5ec\uc8fc\ub294 \uc778\uc1c4\uc2e4 \ud658\uacbd\uc5d0\uc11c \ud2b9\ud788 \uc911\uc694\ud569\ub2c8\ub2e4. \ub9c8\ucc2c\uac00\uc9c0\ub85c, <strong data-start=\"2799\" data-end=\"2826\">\ube44\ucf54\ud305 \uc6a9\uc9c0 COF \ud14c\uc2a4\ud2b8<\/strong> \ub294 \uc81c\uc9c0 \uc81c\uc870\uc5c5\uccb4\uac00 \ubcc0\ud658 \ub610\ub294 \ubc30\uc1a1 \uc804\uc5d0 \uc81c\ud488 \uc0ac\uc591\uc744 \ud655\uc778\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ub450 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ubaa8\ub450\uc5d0\uc11c ASTM D4917\uc740 \ud14c\uc2a4\ud2b8 \ubcc0\ub3d9\uc131\uc744 \uc904\uc774\uace0 \uc5c5\uacc4 \ud488\uc9c8 \ubca4\uce58\ub9c8\ud06c \uc900\uc218\ub97c \ubcf4\uc7a5\ud558\ub294 \ud45c\uc900\ud654\ub41c \uc811\uadfc \ubc29\uc2dd\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ub2e4\ub978 \ubc29\ubc95 \ub300\uc2e0 ASTM D4917\uc744 \uc0ac\uc6a9\ud558\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n\n\n\n<p>\uc6b4\ub3d9 COF\ub97c \uce21\uc815\ud560 \uc218 \uc5c6\ub294 \uacbd\uc0ac\uba74 \ubc29\ubc95(\uc608: ASTM D4918)\uacfc \ub2ec\ub9ac ASTM D4917\uc740 \uc218\ud3c9 \uc774\ub3d9\uc744 \ud1b5\ud574 \uc815\uc801 \ub9c8\ucc30\uacfc \uc6b4\ub3d9 \ub9c8\ucc30\uc744 \ubaa8\ub450 \uc815\ud655\ud558\uac8c \ud3c9\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c \uccab \ubc88\uc9f8 \uc811\ucd09\uc5d0\uc11c\ub9cc \ud14c\uc2a4\ud2b8\ud558\uc5ec \uc2ac\ub77c\uc774\ub529 \ub9c8\ubaa8\ub97c \ucd5c\uc18c\ud654\ud558\ubbc0\ub85c \uc2e4\uc81c \uc2dc\ud2b8 \ucde8\uae09 \uc2dc\ub098\ub9ac\uc624\ub97c \ub354 \uc798 \uc2dc\ubbac\ub808\uc774\uc158\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uace8\ud310\uc9c0\uc640 \uac19\uc740 \ubcf4\ub2e4 \ub2e8\ub2e8\ud55c \uc7ac\ub8cc\uc758 \uacbd\uc6b0 ASTM D4521 \ub610\ub294 ASTM D3247\uc774 \ub354 \uc801\ud569\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc <strong data-start=\"3557\" data-end=\"3592\">\uc587\uace0 \uc720\uc5f0\ud55c \ube44\ucf54\ud305 \uc6a9\uc9c0<\/strong>, D4917\uc740 \ub300\ubd80\ubd84\uc758 \uc885\uc774 \ubcc0\ud658\uae30 \ubc0f \ud3ec\uc7a5 \uc5f0\uad6c\uc18c\uc5d0\uc11c \uad8c\uc7a5\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc62c\ubc14\ub978 \ub9c8\ucc30 \uacc4\uc218 \ud14c\uc2a4\ud130 \uc120\ud0dd\ud558\uae30<\/h2>\n\n\n\n<p>ASTM D4917\uc744 \uc900\uc218\ud558\uace0 \uc815\ud655\ud55c \uc885\uc774 COF \uacb0\uacfc\ub97c \uc5bb\uc73c\ub824\uba74 \ub2e4\uc74c\uc744 \uad8c\uc7a5\ud569\ub2c8\ub2e4. <strong data-start=\"4239\" data-end=\"4270\">\uc140 \uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8 <a href=\"https:\/\/www.packqc.com\/ko\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> \ud14c\uc2a4\ud130<\/strong>, \uc5d0 \ucd5c\uc801\ud654\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc218\ud3c9\uc801 \ud14c\uc2a4\ud2b8<\/li>\n\n\n\n<li>\uc815\uc801 \ubc0f \uc6b4\ub3d9 \ub9c8\ucc30 \uce21\uc815<\/li>\n\n\n\n<li>\ube44\ucf54\ud305 \ubc0f \ud2b9\uc218 \uc6a9\uc9c0\ub97c \uc704\ud55c \ub9de\ucda4\ud615 \uace0\uc815 \uc7a5\uce58 \uc124\uacc4<\/li>\n\n\n\n<li>\uc2a4\ub9c8\ud2b8 \ub370\uc774\ud130 \uae30\ub85d\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\uac15\ub825\ud55c \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ubc0f \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc9c0\uc6d0\uc73c\ub85c \ub4b7\ubc1b\uce68\ub418\ub294 Cell Instruments\uc758 \ub9c8\ucc30 \ud14c\uc2a4\ud130\ub294 \ub2e4\uc591\ud55c \uc885\uc774 \uae30\ud310\uc5d0\uc11c \uc815\ubc00\ub3c4\uc640 \ubc18\ubcf5\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ubb38\uc758\ud558\uae30 ASTM D4917 \ud14c\uc2a4\ud2b8 \uc194\ub8e8\uc158 \ubc1b\uae30 <\/h2>\n\n\n\n<p>\uc885\uc774 \uc7ac\ub8cc\uc758 \ub9c8\ucc30 \ud2b9\uc131\uc740 \uc778\uc1c4, \ud3ec\uc7a5 \ubc0f \ubcc0\ud658 \uc791\uc5c5\uc758 \uc131\ub2a5\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> \ub294 \ucf54\ud305\ub418\uc9c0 \uc54a\uc740 \ud544\uae30 \ubc0f \uc778\uc1c4 \uc6a9\uc9c0\uc758 \uc815\uc801 \ub9c8\ucc30\uacfc \uc6b4\ub3d9 \ub9c8\ucc30\uc744 \ubaa8\ub450 \uce21\uc815\ud560 \uc218 \uc788\ub294 \ud45c\uc900\ud654\ub418\uace0 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \ud504\ub808\uc784\uc6cc\ud06c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc740 \uc815\ubc00\ud55c \uacc4\uce21\uae30\ub97c \ud1b5\ud574 <strong data-start=\"5448\" data-end=\"5478\">COF-01 \uc791\uc131\uc790 <a href=\"https:\/\/www.packqc.com\/ko\/\">\uc140 \uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8<\/a><\/strong>, \ud488\uc9c8 \uc804\ubb38\uac00\uac00 \uc790\uc2e0 \uc788\uac8c \ud14c\uc2a4\ud2b8\ub97c \uc2e4\ud589\ud558\uace0, \uacb0\uacfc\ub97c \ud574\uc11d\ud558\uace0, \uac1c\uc120 \uc0ac\ud56d\uc744 \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\ud14c\uc2a4\ud2b8 \ub300\uc0c1\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <strong data-start=\"5608\" data-end=\"5634\">\uc885\uc774 \uc6b4\ub3d9 \ub9c8\ucc30<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">\uc815\uc801 \ub9c8\ucc30<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">\uc778\uc1c4 \uc6a9\uc9c0 COF<\/strong>, \ub610\ub294 <strong data-start=\"5698\" data-end=\"5725\">\ube44\ucf54\ud305 \uc6a9\uc9c0 COF \ud14c\uc2a4\ud2b8<\/strong>, ASTM D4917\uc744 \uc774\ud574\ud558\uace0 \uc801\uc6a9\ud558\uba74 \uc758\ubbf8 \uc788\uace0 \uc7ac\ud604 \uac00\ub2a5\ud558\uba70 \uae00\ub85c\ubc8c \ud45c\uc900\uc5d0 \ubd80\ud569\ud558\ub294 \uacb0\uacfc\ub97c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n<p><a tabindex=\"0\">1. ASTM D4917\uc740 \ubb34\uc5c7\uc744 \uce21\uc815\ud558\ub098\uc694?<\/a><br>ASTM D4917\uc740 \uc218\ud3c9\uba74 \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud558\uc5ec \ucf54\ud305\ub418\uc9c0 \uc54a\uc740 \ud544\uae30 \ubc0f \uc778\uc1c4 \uc6a9\uc9c0\uc758 \uc815\uc801 \ubc0f \uc6b4\ub3d9 \ub9c8\ucc30 \uacc4\uc218\ub97c \uce21\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><a tabindex=\"0\">2. \uc885\uc774 \uc81c\ud488\uc5d0 \ub9c8\ucc30 \ud14c\uc2a4\ud2b8\uac00 \uc911\uc694\ud55c \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/a><br>\ub9c8\ucc30\uc740 \ud504\ub9b0\ud130\uc640 \ubcf5\uc0ac\uae30\uc758 \uae09\uc9c0 \uc548\uc815\uc131\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\uace0, \ubcc0\ud658 \ubc0f \ud3ec\uc7a5 \uae30\uacc4\uc758 \uc801\uc808\ud55c \ucde8\uae09\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><a tabindex=\"0\">3. \uc815\uc801 COF\ub294 \ub3d9\uc801 COF\uc640 \uc5b4\ub5bb\uac8c \ub2e4\ub978\uac00\uc694?<\/a><br>\uc815\uc801 COF\ub294 \ub450 \ud45c\uba74 \uc0ac\uc774\uc758 \uc6c0\uc9c1\uc784\uc744 \uc2dc\uc791\ud558\ub294 \ud798\uc744 \uce21\uc815\ud558\ub294 \ubc18\uba74, \uc6b4\ub3d9 COF\ub294 \uadf8 \uc6c0\uc9c1\uc784\uc744 \uc9c0\uc18d\ud558\ub294 \ud798\uc744 \uce21\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><a tabindex=\"0\">4. 4. <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> \ucf54\ud305\uc9c0\ub098 \ud2b9\uc218 \uc6a9\uc9c0\uc5d0 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub098\uc694?<\/a><br>ASTM D4917\uc740 \ucf54\ud305\ub418\uc9c0 \uc54a\uc740 \ud544\uae30 \ubc0f \uc778\uc1c4 \uc6a9\uc9c0\uc5d0 \ucd5c\uc801\ud654\ub418\uc5b4 \uc788\uc9c0\ub9cc, \ub2e4\ub978 \uc6a9\uc9c0 \uc720\ud615\uc5d0\ub3c4 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc9c0\ub9cc \uacb0\uacfc\ub294 \uc815\ubc00\ub3c4\uac00 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding Coefficient of Friction in Paper Testing Coefficient of friction (COF) is a crucial parameter that reflects the resistance to motion between two surfaces. In paper applications, this value influences how one sheet slides over another. The static COF determines the force required to start the movement, while the kinetic COF measures the force needed [&hellip;]<\/p>","protected":false},"featured_media":10018,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[],"class_list":["post-9845","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/standard\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/media\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/ko\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}