{"id":1345,"date":"2026-06-23T08:18:41","date_gmt":"2026-06-23T08:18:41","guid":{"rendered":"https:\/\/xflsrmolding.com\/?p=1345"},"modified":"2026-06-23T08:33:17","modified_gmt":"2026-06-23T08:33:17","slug":"lsr-molding-what-actually-matters-in-mold-design","status":"publish","type":"post","link":"https:\/\/xflsrmolding.com\/ja\/lsr-molding-what-actually-matters-in-mold-design\/","title":{"rendered":"LSR\u6210\u5f62\uff1a\u91d1\u578b\u8a2d\u8a08\u306b\u304a\u3044\u3066\u5b9f\u969b\u306b\u91cd\u8981\u306a\u3053\u3068"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1345\" class=\"elementor elementor-1345\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49d0cdf3 e-flex e-con-boxed e-con e-parent\" data-id=\"49d0cdf3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div 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elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/xflsrmolding.com\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Home<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/xflsrmolding.com\/blog\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Blog<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Liquid Silicone Rubber Molding vs HTV Silicone<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-208800c3 e-flex e-con-boxed e-con e-parent\" data-id=\"208800c3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7614342f elementor-widget elementor-widget-heading\" data-id=\"7614342f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">LSR Molding: What Actually Matters in Mold Design<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2cef791e e-flex e-con-boxed e-con e-parent\" data-id=\"2cef791e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6186db17 elementor-share-buttons--view-icon elementor-share-buttons--shape-rounded elementor-share-buttons--skin-gradient elementor-grid-0 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27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\">\n\t\t\t\t\t\t<div\n\t\t\t\t\t\t\tclass=\"elementor-share-btn elementor-share-btn_linkedin\"\n\t\t\t\t\t\t\trole=\"button\"\n\t\t\t\t\t\t\ttabindex=\"0\"\n\t\t\t\t\t\t\taria-label=\"Share on linkedin\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<svg class=\"e-font-icon-svg 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e-con-full e-flex e-con e-child\" data-id=\"7d7fc9a5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e2e6438 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"3e2e6438\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__3e2e6438\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button 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696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-115fdb6f e-con-full e-flex e-con e-child\" data-id=\"115fdb6f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7a98327f elementor-widget elementor-widget-image\" data-id=\"7a98327f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/xflsrmolding.com\/markets\/\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide.jpg\" class=\"attachment-full size-full wp-image-1347\" alt=\"LSR molding cold runner system design for liquid silicone rubber molds\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide.jpg 1536w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-300x200.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-1024x683.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-768x512.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-18x12.jpg 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-25bfd9c7 e-flex e-con-boxed e-con e-parent\" data-id=\"25bfd9c7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2d4aed6f elementor-widget elementor-widget-text-editor\" data-id=\"2d4aed6f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">If you work with <a href=\"https:\/\/xflsrmolding.com\/markets\/\"><strong>LSR molding<\/strong><\/a>, you already know this: the mold decides everything. Material, machine, and settings help\u2014but if the mold design is off, nothing else saves the part.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">I\u2019ve seen molds that looked perfect on paper fail in the first trial. Usually not because of big mistakes, but small details\u2014temperature drift, poor vent depth, or a cold runner that wasn\u2019t really \u201ccold.\u201d<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">This guide walks through the key areas that tend to cause real problems in production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1dd70e7 e-flex e-con-boxed e-con e-parent\" data-id=\"1dd70e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-591d3f51 elementor-widget elementor-widget-text-editor\" data-id=\"591d3f51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"cold-runner-in-lsr-molding-temperature-separation\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Cold Runner in LSR Molding: Temperature Separation First<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cold runner design is where many projects go wrong early.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR is not like thermoplastics. Once it gets warm, it starts to cure. So you need strict separation:<\/p><h3 id=\"three-zones-you-must-control\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Three zones you must control<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cold side (around 20\u00b0C): keeps material stable before injection<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Hot side (120\u2013170\u00b0C typical): cures the part<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Insulation layer: prevents heat transfer between the two<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">In one project for a baby bottle valve, the runner plate temperature crept above 30\u00b0C. The result? Partial curing inside the runner. We had blocked gates after just a few cycles.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">The fix was simple in theory: add proper cooling channels and improve insulation. In practice, that meant reworking the entire plate.<\/p><h3 id=\"what-to-watch\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What to watch<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cooling channels in the nozzle are not optional<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Titanium insulation plates help reduce heat transfer<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Valve gate control matters, especially for parts under 1 gram<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f6b442b e-flex e-con-boxed e-con e-parent\" data-id=\"4f6b442b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-722891fe elementor-widget elementor-widget-text-editor\" data-id=\"722891fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"venting-design-in-lsr-molding-microns-matter\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Venting Design in LSR Molding: Microns Matter<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR flows easily. That\u2019s good for filling\u2014but bad for venting.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">If your vent is too deep, you get flash. Too shallow, you trap air.<\/p><h3 id=\"practical-vent-range\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Practical vent range<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Depth: 0.004\u20130.005 mm works in most cases<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Width: 1\u20133 mm<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Location: last fill area (use flow analysis, not guesswork)<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">We once had a medical seal with random burn marks. The vents were \u201cstandard,\u201d but not placed correctly. After running Moldflow, we found the real air trap was on the opposite side.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Adding a vent there solved the issue without touching the process.<\/p><h3 id=\"when-venting-is-not-enough\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">When venting is not enough<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">For complex parts, vacuum helps a lot. Pulling down to about \u22120.09 MPa before injection can remove most trapped air.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6263cc0 e-flex e-con-boxed e-con e-parent\" data-id=\"6263cc0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ecb61a1 elementor-widget elementor-widget-heading\" data-id=\"ecb61a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Related Articles\uff1a<\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2737b93 e-flex e-con-boxed e-con e-parent\" data-id=\"2737b93\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7a0233b elementor-grid-4 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-portfolio\" data-id=\"7a0233b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns&quot;:&quot;4&quot;,&quot;item_ratio&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0.7,&quot;sizes&quot;:[]},&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;item_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"portfolio.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-portfolio elementor-grid elementor-posts-container\">\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1399 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/ja\/medical-lsr-molding-prevent-mold-defects\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img decoding=\"async\" width=\"1413\" height=\"1113\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding.jpg\" class=\"attachment-full size-full wp-image-1401\" alt=\"Medical LSR Molding: Preventing Mold Defects\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding.jpg 1413w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-300x236.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-1024x807.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-768x605.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-15x12.jpg 15w\" sizes=\"(max-width: 1413px) 100vw, 1413px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tHow Medical LSR Molding Companies Prevent Mold Defects\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1386 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/ja\/custom-liquid-silicone-molding-complex-parts\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img decoding=\"async\" width=\"1413\" height=\"1113\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding.jpg\" class=\"attachment-full size-full wp-image-1395\" alt=\"Custom Liquid Silicone Molding for Complex Parts\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding.jpg 1413w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-300x236.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-1024x807.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-768x605.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-15x12.jpg 15w\" sizes=\"(max-width: 1413px) 100vw, 1413px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tHow We Turn Complex Designs Into Production-Ready Parts\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1376 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/ja\/medical-grade-lsr-molding-what-most-teams-miss-before-tooling\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review.jpg\" class=\"attachment-full size-full wp-image-1378\" alt=\"medical grade LSR molding cold runner system\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review.jpg 1254w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-300x300.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-1024x1024.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-150x150.jpg 150w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-768x768.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-12x12.jpg 12w\" sizes=\"(max-width: 1254px) 100vw, 1254px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tMedical Grade LSR Molding: What Most Teams Miss Before Tooling\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1362 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/ja\/silicone-parts-why-lsr-molding-companies-fail-and-how-to-choose-right\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure.jpg\" class=\"attachment-full size-full wp-image-1371\" alt=\"lsr silicone valve mold design structure\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure.jpg 1080w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-300x200.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-1024x683.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-768x512.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-18x12.jpg 18w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tWhy LSR Molding Companies Fail And How to Choose Right\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-69a9e8d3 e-flex e-con-boxed e-con e-parent\" data-id=\"69a9e8d3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c09bcbc elementor-widget elementor-widget-text-editor\" data-id=\"2c09bcbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"shrinkage-in-lsr-molding-not-a-fixed-number\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Shrinkage in LSR Molding: Not a Fixed Number<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">A common assumption: shrinkage is 2.5%. Just scale the mold.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">That works\u2014until it doesn\u2019t.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR shrinks after demolding, not during packing like thermoplastics. So you don\u2019t \u201cfix\u201d size with pressure.<\/p><h3 id=\"what-actually-affects-shrinkage\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What actually affects shrinkage<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Flow direction (higher along flow)<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Wall thickness (thin sections shrink more)<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Mold temperature<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Demold temperature<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Post-curing<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">On a long, thin gasket, we saw over 3.5% shrinkage along flow, but only about 2% across it. If we had used a single value, the part would never meet tolerance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1d19c873 e-flex e-con-boxed e-con e-parent\" data-id=\"1d19c873\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39d866c7 elementor-widget elementor-widget-text-editor\" data-id=\"39d866c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"flash-control-it-starts-with-the-parting-line\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Flash Control: It Starts with the Parting Line<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Flash is not just a process issue. It\u2019s mostly a mold issue.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR will find any gap.<\/p><h3 id=\"three-levels-of-control\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Three levels of control<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Design level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Reduce inserts where possible<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Plan flash tear lines early<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Use mushroom or tapered ejector pins<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Machining level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Parting surfaces must be matched at micron level<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Ejector clearances must stay tight<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Process level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Use staged clamping with vacuum if possible<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">I\u2019ve seen shops increase clamp force to fix flash. It helps sometimes\u2014but if your parting line isn\u2019t tight, silicone will still leak through.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9c0db8a e-flex e-con-boxed e-con e-parent\" data-id=\"9c0db8a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58168d56 elementor-widget elementor-widget-text-editor\" data-id=\"58168d56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"temperature-control-uniformity-beats-high-heat\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Temperature Control: Uniformity Beats High Heat<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">You don\u2019t need the highest temperature. You need stable temperature.<\/p><h3 id=\"typical-ranges\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Typical ranges<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Standard LSR: 120\u2013150\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Fast cycles: 160\u2013170\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Avoid going above 180\u00b0C<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">The bigger problem is uneven heat.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">One mold we reviewed had a 10\u00b0C difference across cavities. Some parts cured fine, others stayed soft. The root cause was poor heater placement and shared sensors.<\/p><h3 id=\"key-points\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Key points<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Keep temperature variation within \u00b13\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Place heaters evenly and close to the cavity<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Avoid putting heaters too near the parting line<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9d3ed8d e-flex e-con-boxed e-con e-parent\" data-id=\"9d3ed8d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-61c15c79 e-con-full e-flex e-con e-child\" data-id=\"61c15c79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-452d49c9 elementor-widget elementor-widget-text-editor\" data-id=\"452d49c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"mold-material-and-demolding-often-overlooked\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Mold Material and Demolding: Often Overlooked<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Material choice matters more when you run high temperature cycles every day.<\/p><h3 id=\"typical-selections\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Typical selections<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Standard LSR: hardened tool steel<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">High wear or filled LSR: coated or powder metallurgy steel<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Optical parts: polished steel<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">For demolding, surface treatment helps a lot.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">PTFE or nickel coatings reduce sticking. Combine that with a 0.5\u20131\u00b0 draft angle, and most parts release cleanly.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Relying on release agents long term usually creates more problems than it solves.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-10f6f003 e-flex e-con-boxed e-con e-parent\" data-id=\"10f6f003\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3fe70023 e-con-full e-flex e-con e-child\" data-id=\"3fe70023\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4eb0a elementor-widget elementor-widget-text-editor\" data-id=\"e4eb0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"faq-lsr-molding-design\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">FAQ: LSR Molding Design<\/h2><h3 id=\"what-is-the-ideal-vent-depth-for-lsr-molding\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What is the ideal vent depth for LSR molding?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Around 0.004\u20130.005 mm. Going above 0.02 mm will almost always cause flash.<\/p><h3 id=\"why-is-cold-runner-design-critical-in-lsr\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Why is cold runner design critical in LSR?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Because LSR starts curing above about 30\u00b0C. Poor cooling leads to blockages and scrap.<\/p><h3 id=\"how-much-does-lsr-shrink\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">How much does LSR shrink?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Typically 2% to 4%, but it varies by flow direction, thickness, and curing conditions.<\/p><h3 id=\"how-do-you-reduce-flash-in-lsr-parts\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">How do you reduce flash in LSR parts?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Focus on parting line precision, minimize gaps, and control mold alignment before adjusting process settings.<\/p><h3 id=\"is-vacuum-necessary-in-lsr-molding\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Is vacuum necessary in LSR molding?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Not always, but for complex or thin parts, it greatly improves venting and reduces defects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5c15b3f0 e-flex e-con-boxed e-con e-parent\" data-id=\"5c15b3f0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40fc4bc3 elementor-widget elementor-widget-text-editor\" data-id=\"40fc4bc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"8363\" data-end=\"8416\"><a href=\"https:\/\/xflsrmolding.com\/markets\/\">Contact US<\/a> to Discuss Your Project Today<\/h2><p class=\"isSelectedEnd\">Successful <a href=\"https:\/\/xflsrmolding.com\/markets\/\"><strong>LSR molding<\/strong><\/a> starts long before the first production run.<\/p><p class=\"isSelectedEnd\">Cold runner performance, vent design, shrinkage compensation, flash prevention, temperature control, and material selection all work together. Weakness in one area often creates problems elsewhere.<\/p><p>When mold design addresses these factors from the beginning, production becomes more predictable, scrap rates fall, and dimensional consistency improves over the life of the tool.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Blog Home Blog Liquid Silicone Rubber Molding vs HTV Silicone LSR Molding: What Actually Matters in Mold Design Table of Contents If you work with LSR molding, you already know this: the mold decides everything. Material, machine, and settings help\u2014but if the mold design is off, nothing else saves the part. I\u2019ve seen molds that looked perfect on paper fail in the first trial. Usually not because of big mistakes, but small details\u2014temperature drift, poor vent depth, or a cold runner that wasn\u2019t really \u201ccold.\u201d This guide walks through the key areas that tend to cause real problems in production. Cold Runner in LSR Molding: Temperature Separation First Cold runner [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1347,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>LSR Molding Guide: Design Tips and Common Mistakes<\/title>\n<meta name=\"description\" content=\"Learn practical LSR molding design tips, including cold runner, venting, shrinkage, and flash control, with real shop-floor insights.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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Home Blog Liquid Silicone Rubber Molding vs HTV Silicone LSR Molding: What Actually Matters in Mold Design Table of Contents If you work with LSR molding, you already know this: the mold decides everything. Material, machine, and settings help\u2014but if the mold design is off, nothing else saves the part. 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