{"id":51734,"date":"2026-02-11T14:36:10","date_gmt":"2026-02-11T06:36:10","guid":{"rendered":"https:\/\/zetarmold.com\/?p=51734"},"modified":"2026-04-09T08:06:53","modified_gmt":"2026-04-09T00:06:53","slug":"51734-2","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/nl\/51734-2\/","title":{"rendered":"How Does Gate Location Influence Injection Molded Part Quality?"},"content":{"rendered":"
Belangrijkste opmerkingen<\/strong>
\n \u2013 De locatie van de poort bepaalt het vloeipatroon van gesmolten plastic, wat direct de structurele sterkte, vervorming en cosmetisch uiterlijk be\u00efnvloedt.
\n \u2013 Onderwaterpoorten (tunnelpoorten) bieden automatisch afsnijden en een schoon esthetisch uiterlijk, maar zijn beperkt door gevoeligheid voor schuifspanning.
\n \u2013 Randpoorten zijn de meest voorkomende en kosteneffectieve keuze, maar vereisen nabewerking en laten zichtbare sporen achter.
\n \u2013 Het plaatsen van poorten in dikke secties zorgt voor de juiste drukvulling, waardoor zinkmerken en holtes in het uiteindelijke onderdeel worden geminimaliseerd.\n<\/div>\n

What Is the Function of a Gate in Injection Molding?<\/h2>\n

In spuitgietvorm<\/a>ABS\/PC kunststof onderdeel met zichtbare groeven en connectoren. poort<\/strong> is the critical transition point where molten plastic enters the mold cavity from the runner system. It acts as a throttle, controlling the volume, flow rate, and pressure of the material as it fills the part.<\/p>\n

Juist choosing poortlocatie<\/a>1<\/a><\/sup><\/strong> and type is a fundamental aspect of mold design. It dictates:<\/p>\n

    \n
  1. Flow Orientation:<\/strong> How polymer chains align (affecting strength).<\/li>\n
  2. Ontluchting:<\/strong> Where trapped gas is pushed (preventing burns).<\/li>\n
  3. Esthetiek:<\/strong> Where the \"vestige\" (witness mark) appears on the product.<\/li>\n
  4. Packing:<\/strong> Whether the part can be packed out sufficiently to prevent gate blush defects<\/strong> en zinkvlekken<\/a>2<\/a><\/sup>.<\/li>\n<\/ol>\n
    \n
    \n

    <\/svg> Gating into the thickest section of the part allows for better packing and reduces sink marks.<\/b>Echt<\/span><\/p>\n

    Plastic flows from thick to thin areas most efficiently. Gating in thick sections keeps the flow path open longer, allowing packing pressure to compensate for shrinkage.<\/p>\n<\/div>\n

    \n

    <\/svg> Submarine gates can be used for all materials regardless of their shear sensitivity.<\/b>Vals<\/span><\/p>\n

    Submarine gates involve high shear rates due to their small orifice and angled entry. Using them with shear-sensitive materials like PVC or PC can cause material degradation and surface splay.<\/p>\n<\/div>\n

    \"Quality
    Quality inspection of injection molded plastic parts<\/figcaption><\/figure>\n<\/p>\n

    How Do Different Injection Molding Gate Types Compare?<\/h2>\n

    Selecting the right gate type balances tooling cost, cycle time, and part aesthetics.<\/p>\n

    1. Edge Gate<\/h3>\n