{"id":14699,"date":"2022-12-15T10:00:00","date_gmt":"2022-12-15T02:00:00","guid":{"rendered":"https:\/\/zetarmold.com\/?p=14699"},"modified":"2026-04-09T08:27:32","modified_gmt":"2026-04-09T00:27:32","slug":"%e3%82%b7%e3%83%b3%e3%82%af%e3%83%9e%e3%83%bc%e3%82%af%e5%b0%84%e5%87%ba%e6%88%90%e5%bd%a2","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/ja\/%e3%82%b7%e3%83%b3%e3%82%af%e3%83%9e%e3%83%bc%e3%82%af%e5%b0%84%e5%87%ba%e6%88%90%e5%bd%a2\/","title":{"rendered":"\u5c04\u51fa\u6210\u5f62\u3067\u30d2\u30b1\u3092\u9632\u3050\u306b\u306f\uff1f"},"content":{"rendered":"<p><strong>One of the potential drawbacks of the <a href=\"https:\/\/zetarmold.com\/ja\/injection-mold-complete-guide\/\">\u5c04\u51fa\u6210\u5f62\u91d1\u578b<\/a>ing process is a defect known as a sink mark, in which the surface of the finished product appears sunken or concave due to uneven cooling or shrinkage of the material.&nbsp;<\/strong><\/p>\n<p>In this article, we will discuss some strategies for avoiding sink marks in plastic injection molding.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\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\">\n<div class=\"wp-block-embed__wrapper\">\n<iframe  id=\"_ytid_48524\"  width=\"800\" height=\"450\"  data-origwidth=\"800\" data-origheight=\"450\"  data-relstop=\"1\" src=\"https:\/\/www.youtube.com\/embed\/GJGstdlFhW8?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;modestbranding=0&#038;rel=0&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube\u30d7\u30ec\u30fc\u30e4\u30fc\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe>\n<\/div>\n<\/figure>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">1.\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u30d2\u30b1\u3068\u306f\uff1f<\/span><\/h2>\n<p>Sink marks are common injection molding defects, in which the surface of the finished product sinks or caves in, creating an indentation or depression.&nbsp;<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">2.\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u30d2\u30b1\u306e\u539f\u56e0\u306f\uff1f<\/span><\/h2>\n<p>\u30b7\u30f3\u30af\u8de1\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3044\u304f\u3064\u304b\u306e\u8981\u56e0\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u3002<\/p>\n<p>a.\u4e0d\u9069\u5207 <a rel=\"noreferrer noopener\" href=\"https:\/\/zetarmold.com\/ja\/\" data-type=\"URL\" data-id=\"https:\/\/zetarmold.com\/\" target=\"_blank\">\u5c04\u51fa\u6210\u5f62\u91d1\u578b<\/a> \u3092\u30c7\u30b6\u30a4\u30f3\u3057\u305f\u3002<\/p>\n<p>b.\u6eb6\u878d\u6750\u6599\u306e\u51b7\u5374\u304c\u4e0d\u5341\u5206\u3002<\/p>\n<p>c.\u6750\u6599\u306e\u6d41\u308c\u304c\u4e0d\u5341\u5206&nbsp;<\/p>\n<p>d.\u6eb6\u878d\u6750\u6599\u4e2d\u306e\u6c17\u6ce1\u306e\u5b58\u5728\u3002<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-1.jpg\" alt=\"\" class=\"wp-image-14721\" height=\"400\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-1.jpg 564w, https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-1-300x268.jpg 300w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">3.\u4e0d\u9069\u5207\u306a\u91d1\u578b\u8a2d\u8a08\u306b\u3088\u308b\u30d2\u30b1\u3092\u9632\u3050\u306b\u306f\uff1f<\/span><\/h2>\n<p>One of the key factors that can contribute to sinking marks is the design of the injection mold.&nbsp;The design of the mold plays a critical role in the overall quality of the finished product, and a poorly designed mold can result in defects such as sink marks.&nbsp;<\/p>\n<p>To reduce sink marks, the injection mold should be designed with adequate wall thickness and gate sizes, as well as proper venting to allow air to escape from the mold.&nbsp;<\/p>\n<p>\u3055\u3089\u306b\u3001\u91d1\u578b\u306e\u8a2d\u8a08\u306f\u3001\u5b8c\u6210\u54c1\u304c\u6b63\u3057\u3044\u5bf8\u6cd5\u306b\u306a\u308b\u3088\u3046\u306b\u3001\u6750\u6599\u304c\u51b7\u3048\u308b\u3068\u304d\u306e\u53ce\u7e2e\u3092\u8003\u616e\u306b\u5165\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"564\" height=\"373\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding.jpg\" alt=\"\" class=\"wp-image-14726\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding.jpg 564w, https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-300x198.jpg 300w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">4.\u6eb6\u878d\u6750\u6599\u306e\u51b7\u5374\u4e0d\u8db3\u306b\u3088\u308b\u30d2\u30b1\u3092\u907f\u3051\u308b\u306b\u306f\uff1f<\/span><\/h2>\n<p>During injection molding, it is essential to properly cool the molten material to solidify it into the desired shape and avoid sink marks. <\/p>\n<p>\u3053\u306e\u7d50\u679c\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9069\u5207\u306a\u5a92\u4f53\u306e\u6e29\u5ea6\u5236\u5fa1\u3092\u4f34\u3046\u9069\u5207\u306a\u51b7\u5374\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u30d7\u30ed\u30bb\u30b9\u4e2d\u306b\u5c0e\u5165\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u308c\u3092\u6020\u308b\u3068\u3001\u88fd\u54c1\u5168\u4f53\u306e\u54c1\u8cea\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3057\u304b\u306d\u306a\u3044\u3002<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-4 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"423\" height=\"317\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-4-edited-1.jpg\" alt=\"\" class=\"wp-image-14734\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-4-edited-1.jpg 423w, https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-4-edited-1-300x225.jpg 300w\" sizes=\"(max-width: 423px) 100vw, 423px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">5.\u6750\u6599\u306e\u6d41\u308c\u304c\u4e0d\u5341\u5206\u306a\u5834\u5408\u306e\u30d2\u30b1\u3092\u9632\u3050\u306b\u306f\uff1f<\/span><\/h2>\n<p>The formation of sink marks in injection molds can be prevented through the careful control and monitoring of material temperature, as well as designing a mold that accounts for the flow characteristics of the material. <\/p>\n<p>\u3053\u306e\u76ee\u6a19\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6d41\u91cf\u8a08\u306e\u3088\u3046\u306a\u5c02\u9580\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u6700\u9069\u306a\u30ec\u30fc\u30c8\u3092\u6e2c\u5b9a\u3057\u3001\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30b9\u30c6\u30c3\u30d7\u3092\u8e0f\u3080\u3053\u3068\u3067\u3001\u30b7\u30f3\u30ad\u30f3\u30b0\u30de\u30fc\u30af\u306b\u3088\u308b\u88fd\u54c1\u306e\u6b20\u9665\u304c\u306a\u304f\u306a\u308a\u3001\u5b89\u5fc3\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff01<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"501\" height=\"376\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-6-edited.jpg\" alt=\"\" class=\"wp-image-14736\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-6-edited.jpg 501w, https:\/\/zetarmold.com\/wp-content\/uploads\/2022\/12\/sink-marks-injection-molding-6-edited-300x225.jpg 300w\" sizes=\"(max-width: 501px) 100vw, 501px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-cyan-blue-color\">6.\u6eb6\u878d\u6750\u6599\u4e2d\u306b\u6c17\u6ce1\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306e\u30d2\u30b1\u3092\u907f\u3051\u308b\u306b\u306f\uff1f<\/span><\/h2>\n<p>\u30b7\u30f3\u30af\u306e\u8de1\u306f\u3001\u3069\u3093\u306a\u5834\u6240\u3067\u3082\u6b53\u8fce\u3055\u308c\u306a\u3044\u3082\u306e\u3060\u3002 <a href=\"https:\/\/zetarmold.com\/ja\/\" data-type=\"URL\" data-id=\"https:\/\/zetarmold.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u5c04\u51fa\u6210\u5f62<\/a> \u3057\u304b\u3057\u3001\u8131\u6c17\u88c5\u7f6e\u3068\u9069\u5207\u306a\u63db\u6c17\u3068\u3044\u3046\u89e3\u6c7a\u7b56\u304c\u3042\u308b\u3002 <\/p>\n<p>\u306b\u6ce8\u5165\u3059\u308b\u524d\u306b\u3001\u6eb6\u878d\u6750\u6599\u304b\u3089\u3059\u3079\u3066\u306e\u6c17\u6ce1\u304c\u9664\u53bb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002 <a href=\"https:\/\/zetarmold.com\/ja\/\" data-type=\"URL\" data-id=\"https:\/\/zetarmold.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u5c04\u51fa\u6210\u5f62\u91d1\u578b<\/a> \u307e\u305f\u3001\u901a\u6c17\u6027\u306e\u826f\u3044\u91d1\u578b\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d2\u30b1\u306e\u306a\u3044\u72b6\u614b\u3092\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u308b\uff01<\/p>\n<div style=\"background:#f0f4f8;padding:20px;border-radius:8px;margin-top:30px;\">\n<p style=\"margin:0 0 10px;font-size:18px;\"><strong>Need a Quote for Your Injection Molding Project?<\/strong><\/p>\n<p style=\"margin:0 0 10px;\">Get competitive pricing, DFM feedback, and production timeline from ZetarMold&#8217;s engineering team.<\/p>\n<p style=\"margin:0;\"><a href=\"https:\/\/zetarmold.com\/ja\/%e3%81%8a%e5%95%8f%e3%81%84%e5%90%88%e3%82%8f%e3%81%9b\/\" style=\"background:#2563eb;color:white;padding:12px 24px;border-radius:6px;text-decoration:none;font-weight:bold;\">Request a Free Quote \u2192<\/a> See our <a href=\"https:\/\/zetarmold.com\/ja\/injection-molding-complete-guide\/\">Injection Molding Complete Guide<\/a> for a comprehensive overview.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u5c04\u51fa\u6210\u5f62\u30d7\u30ed\u30bb\u30b9\u306e\u6f5c\u5728\u7684\u306a\u6b20\u70b9\u306e\u3072\u3068\u3064\u306b\u3001\u30d2\u30b1\u3068\u547c\u3070\u308c\u308b\u6b20\u9665\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6750\u6599\u306e\u4e0d\u5747\u4e00\u306a\u51b7\u5374\u3084\u53ce\u7e2e\u306b\u3088\u3063\u3066\u3001\u5b8c\u6210\u54c1\u306e\u8868\u9762\u304c\u9665\u6ca1\u3057\u305f\u308a\u51f9\u3093\u3060\u308a\u3059\u308b\u3082\u306e\u3067\u3059\u3002  \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u30d2\u30b1\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306e\u6226\u7565\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u30021.\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u30d2\u30b1\u3068\u306f\uff1f \u30d2\u30b1\u306f\u5c04\u51fa\u6210\u5f62\u306e\u4e00\u822c\u7684\u306a\u6b20\u9665\u3067\u3001\u5b8c\u6210\u54c1\u306e\u8868\u9762\u304c\u6c88\u3093\u3060\u308a\u9665\u6ca1\u3057\u305f\u308a\u3057\u3066\u3001\u304f\u307c\u307f\u3084\u7aaa\u307f\u304c\u3067\u304d\u308b\u3053\u3068\u3067\u3042\u308b\u3002  2.\u5c04\u51fa\u6210\u5f62\u306b\u304a\u3051\u308b\u30d2\u30b1\u306e\u539f\u56e0\u3068\u306f\uff1f \u30d2\u30b1\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3044\u304f\u3064\u304b\u306e\u8981\u56e0\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a a. \u5c04\u51fa\u6210\u5f62\u91d1\u578b\u306e\u8a2d\u8a08\u304c\u4e0d\u9069\u5207\u3067\u3042\u308b\u3002[...]<\/p>","protected":false},"author":1,"featured_media":13764,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"How to avoid sink marks in injection molding? | ZetarMold","_seopress_titles_desc":"Learn how to prevent and fix sink marks injection molding in injection molding. ZetarMold's engineers provide proven DFM solutions to eliminate common plastic","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[52],"tags":[101],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/posts\/14699"}],"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=14699"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/posts\/14699\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/media\/13764"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/media?parent=14699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/categories?post=14699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/ja\/wp-json\/wp\/v2\/tags?post=14699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}