{"id":4854,"date":"2026-09-27T23:30:50","date_gmt":"2026-09-27T15:30:50","guid":{"rendered":"https:\/\/www.huazhaomachinery.com\/?p=4854"},"modified":"2026-09-29T12:24:56","modified_gmt":"2026-09-29T04:24:56","slug":"single-vs-double-vent-plastic-extruders-guide","status":"publish","type":"post","link":"https:\/\/www.huazhaomachinery.com\/id\/blog\/single-vs-double-vent-plastic-extruders-guide\/","title":{"rendered":"Single vs. Double Vent Extruder: How to Choose the Right Venting System for Your Plastic Pelletizing Machine"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4854\" class=\"elementor elementor-4854\" data-elementor-post-type=\"post\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-471ec23 e-flex e-con-boxed e-con e-parent\" data-id=\"471ec23\" 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-d7ee82d elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"d7ee82d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&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\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\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\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d7ee82d\" aria-expanded=\"true\" aria-label=\"Abrir la tabla de contenidos\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d7ee82d\" aria-expanded=\"true\" aria-label=\"Cerrar la tabla de contenidos\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__d7ee82d\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-feebf18 elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"feebf18\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t\tIn plastic recycling and granulation, achieving high pellet density, superior surface gloss, and stable production relies heavily on the design of the extruder venting system. Choosing whether your machine barrel features a single vent or a multi-stage configuration is not just a numbers game\u2014it is a critical engineering decision tailored to specific polymer materials and quality demands.\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-6ab50ae5 e-flex e-con-boxed e-con e-parent\" data-id=\"6ab50ae5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-e4c9512 e-con-full e-flex e-con e-child\" data-id=\"e4c9512\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-457e1dd elementor-widget elementor-widget-text-editor\" data-id=\"457e1dd\" 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-pm-slice=\"1 1 []\">1. The Core Function of an Extruder Vent Port<\/h2><p>As polymer raw materials are conveyed, melted, and plasticized along the screw, they inevitably generate moisture and volatile gases. If these trapped gases are not efficiently removed before the melt passes through the die, it leads to surface bubbles, low pellet density, strand breakage, and production instability.<\/p><p>The primary role of an extruder vent port is to reliably extract gaseous byproducts from the melt stream, ensuring a homogeneous, dense, and bubble-free final product.<\/p><h2>2. Single Vent vs. Double Vent: What\u2019s the Difference?<\/h2><h4>A. Single Vent Structure (Vented Single Screw Extruder)<\/h4><ul><li><p><strong>Design:<\/strong> Features a single vacuum exhaust port along the barrel.<\/p><\/li><li><p><strong>Characteristics:<\/strong> Simple mechanical structure and lower equipment investment.<\/p><\/li><li><p><strong>Best For:<\/strong> Clean virgin materials or pre-dried polymers with minimal moisture and low volatile content.<\/p><\/li><\/ul><h4>B. Double Vent \/ Multi-Stage Structure (Vented Twin Screw Extruder)<\/h4><ul><li><p><strong>Design:<\/strong> Equipped with two staged vent ports for progressive devolatilization:<\/p><ul><li><p><strong>First Vent Port (Main Devolatilization):<\/strong> Located near the early melting zone to extract the bulk of moisture and heavy initial volatiles.<\/p><\/li><li><p><strong>Second Vent Port (Deep Degassing):<\/strong> Positioned in the final homogenization zone to pull out residual microscopic traces under deep vacuum.<\/p><\/li><\/ul><\/li><li><p><strong>Characteristics:<\/strong> Two-stage cooperation dramatically improves pellet density and mechanical strength.<\/p><\/li><\/ul><figure id=\"attachment_4857\" aria-describedby=\"caption-attachment-4857\" style=\"width: 1366px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4857 size-full\" src=\"https:\/\/www.huazhaomachinery.com\/wp-content\/uploads\/2026\/09\/HuaZhao-factory.webp\" alt=\"HuaZhao Plastic Machinery factory headquarters and manufacturing facility in China\" width=\"1366\" height=\"768\" srcset=\"https:\/\/www.huazhaomachinery.com\/wp-content\/uploads\/2026\/09\/HuaZhao-factory.webp 1366w, https:\/\/www.huazhaomachinery.com\/wp-content\/uploads\/2026\/09\/HuaZhao-factory-300x169.webp 300w, https:\/\/www.huazhaomachinery.com\/wp-content\/uploads\/2026\/09\/HuaZhao-factory-768x432.webp 768w, https:\/\/www.huazhaomachinery.com\/wp-content\/uploads\/2026\/09\/HuaZhao-factory-18x10.webp 18w\" sizes=\"(max-width: 1366px) 100vw, 1366px\" \/><figcaption id=\"caption-attachment-4857\" class=\"wp-caption-text\">HuaZhao Plastic Machinery factory headquarters and manufacturing facility in China<\/figcaption><\/figure><h2>3. Selection Guide for B2B Buyers<\/h2><ul><li><p><strong>Choose a Vented Single Screw Extruder \/ Single Vent when:<\/strong> You are processing clean factory scrap or pre-dried raw materials with low moisture content, where basic degassing is sufficient and cost-efficiency is prioritized.<\/p><\/li><li><p><strong>Choose a Vented Twin Screw Extruder \/ Double Vent when:<\/strong> You operate a vented recycling extruder line processing post-consumer washed films, high-moisture agricultural plastics, or high-value engineering plastics that demand rigorous devolatilization and zero porosity.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14aa17d1 elementor-widget elementor-widget-heading\" data-id=\"14aa17d1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently Asked Questions (FAQ) for B2B Buyers<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-3e1fb003 e-flex e-con-boxed e-con e-parent\" data-id=\"3e1fb003\" 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-19c6d3a9 elementor-widget elementor-widget-eael-adv-accordion\" data-id=\"19c6d3a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eael-adv-accordion.default\">\n\t\t\t\t\t            <div class=\"eael-adv-accordion\" id=\"eael-adv-accordion-19c6d3a9\" data-scroll-on-click=\"no\" data-scroll-speed=\"300\" data-accordion-id=\"19c6d3a9\" data-accordion-type=\"accordion\" data-toogle-speed=\"300\">\n            <div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-is-the-output-and-power-consumption-of-a-double-exhaust-pelletizer-always-higher-than-a-single-exhaust-model\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"1\" aria-controls=\"elementor-tab-content-4321\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 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1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: Is the output and power consumption of a double exhaust pelletizer always higher than a single exhaust model?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4321\" class=\"eael-accordion-content clearfix\" data-tab=\"1\" aria-labelledby=\"q-is-the-output-and-power-consumption-of-a-double-exhaust-pelletizer-always-higher-than-a-single-exhaust-model\"><p>A:<\/p><p class=\"isSelectedEnd\"><span class=\"selected\">A double exhaust pelletizer&#8217;s output is not solely determined by the number of exhaust ports; it primarily depends on the length-to-diameter (<\/span>$L\/D$<span class=\"selected\">) ratio, screw configuration, and motor power. However, because double exhaust systems require longer screws to accommodate two-stage devolatilization (typically a higher <\/span>$L\/D$<span class=\"selected\"> ratio), the total power configuration and equipment investment will be higher than single exhaust models. Nevertheless, for high-moisture materials, double exhaust prevents frequent strand breakage, ultimately boosting overall effective output when looking at overall equipment effectiveness (OEE).<\/span><\/p><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-do-raw-materials-still-need-to-be-pre-dried-when-using-a-double-exhaust-system\" class=\"elementor-tab-title eael-accordion-header active-default\" tabindex=\"0\" data-tab=\"2\" aria-controls=\"elementor-tab-content-4322\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: Do raw materials still need to be pre-dried when using a double exhaust system?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4322\" class=\"eael-accordion-content clearfix active-default\" data-tab=\"2\" aria-labelledby=\"q-do-raw-materials-still-need-to-be-pre-dried-when-using-a-double-exhaust-system\"><p>A:<\/p><p>This depends on the initial moisture content of the material. For extremely wet washed scrap, while double exhaust offers powerful devolatilization, excessive moisture can still exceed the limit of the first exhaust port, causing &#8220;spitting&#8221; (melt overflowing from the port). Therefore, for materials with surface water or high humidity, we recommend pairing with a simple dewatering or pre-drying unit to ensure the double exhaust system runs stably and efficiently.<\/p><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-how-can-i-resolve-spitting-at-the-exhaust-port\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"3\" aria-controls=\"elementor-tab-content-4323\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: How can I resolve \"spitting\" at the exhaust port?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4323\" class=\"eael-accordion-content clearfix\" data-tab=\"3\" aria-labelledby=\"q-how-can-i-resolve-spitting-at-the-exhaust-port\"><p>A:<\/p><p>Exhaust port spitting is a common pain point in B2B production. Common causes include: excessive vacuum pressure, over-filling of the screw channel beneath the exhaust port, excessive raw material moisture, or improper temperature settings. Optimization recommendations:<\/p><ol><li><p>Adjust the temperature of the corresponding zone to lower the melt viscosity\/flowability.<\/p><\/li><li><p>Modify the screw configuration (add reverse-flight elements or mixing elements directly under the exhaust port to create appropriate pressure\/resistance and reduce material fill volume).<\/p><\/li><li><p>Appropriately regulate the vacuum pump suction valve opening.<\/p><\/li><\/ol><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-how-should-i-communicate-my-exhaust-requirements-to-the-equipment-supplier-during-procurement\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"4\" aria-controls=\"elementor-tab-content-4324\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: How should I communicate my exhaust requirements to the equipment supplier during procurement?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4324\" class=\"eael-accordion-content clearfix\" data-tab=\"4\" aria-labelledby=\"q-how-should-i-communicate-my-exhaust-requirements-to-the-equipment-supplier-during-procurement\"><p>A:<\/p><p><span class=\"selected\">To ensure you purchase the right matching equipment, we recommend providing suppliers with the following key parameters:<\/span><\/p><ul><li><p><strong><span class=\"selected\">Material Type<\/span><\/strong><span class=\"selected\">: Virgin resin, industrial scrap, post-consumer recycled flakes, or washed material?<\/span><\/p><\/li><li><p><strong><span class=\"selected\">Initial State<\/span><\/strong><span class=\"selected\">: Pre-dried or not? What is the estimated moisture content?<\/span><\/p><\/li><li><p><strong><span class=\"selected\">Downstream Application<\/span><\/strong><span class=\"selected\">: Blown film, injection molding, or pipe extrusion? What is your tolerance for bubble defects and granule density?<\/span><\/p><\/li><li><p><strong><span class=\"selected\">Output Requirement<\/span><\/strong><span class=\"selected\">: Target output per hour (kg\/h). Suppliers will use these data points to match you with the optimal screw <\/span>$L\/D$<span class=\"selected\"> ratio and single\/double exhaust setup.<\/span><\/p><\/li><\/ul><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-how-does-an-extruder-venting-system-prevent-polymer-degradation\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"5\" aria-controls=\"elementor-tab-content-4325\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: How does an extruder venting system prevent polymer degradation?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4325\" class=\"eael-accordion-content clearfix\" data-tab=\"5\" aria-labelledby=\"q-how-does-an-extruder-venting-system-prevent-polymer-degradation\"><p>A:<\/p><p>By applying precise negative pressure through the <strong>extruder vacuum vent<\/strong>, moisture and trapped solvents are instantly removed. This prevents hydrolytic degradation\u2014especially in moisture-sensitive plastics like PET and PA\u2014protecting the polymer molecular chains.<\/p><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-can-a-standard-single-vent-extruder-be-modified-into-a-vented-recycling-extruder\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"6\" aria-controls=\"elementor-tab-content-4326\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: Can a standard single-vent extruder be modified into a vented recycling extruder?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4326\" class=\"eael-accordion-content clearfix\" data-tab=\"6\" aria-labelledby=\"q-can-a-standard-single-vent-extruder-be-modified-into-a-vented-recycling-extruder\"><p>A:<\/p><p>It depends on the L\/D (length-to-diameter) ratio of your barrel and screw geometry. Converting to a dual-stage setup requires adequate length for the second melting and devolatilization zones, alongside a professional <strong>extruder vent port design<\/strong> to prevent melt bleeding (screw plugging).<\/p><\/div>\n\t\t\t\t\t<\/div><div class=\"eael-accordion-list\">\n\t\t\t\t\t<div id=\"q-what-causes-melt-to-push-out-bleed-from-the-extruder-vent-port-and-how-can-it-be-prevented\" class=\"elementor-tab-title eael-accordion-header\" tabindex=\"0\" data-tab=\"7\" aria-controls=\"elementor-tab-content-4327\"><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_2\" data-name=\"&#x56FE;&#x5C42; 2\" x=\"4\" y=\"4\" width=\"67\" height=\"67\" xlink:href=\"data:img\/png;base64,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\"><\/image><\/svg><\/span><span class=\"fa-accordion-icon fa-accordion-icon-svg eaa-svg eael-advanced-accordion-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"75\" height=\"75\" viewBox=\"0 0 75 75\"><image id=\"&#x56FE;&#x5C42;_1\" data-name=\"&#x56FE;&#x5C42; 1\" x=\"4\" y=\"35\" width=\"67\" height=\"5\" xlink:href=\"data:img\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAFCAYAAAAey1ECAAAA6ElEQVQ4jWyOyxGAMAhEIU7sJTV5oxwroBSLSSkEHNBoJpMLn4V9gAAAzHyWUg4REVVtKaXQzQwQo\/RgQ\/\/NPMfCq\/dZ11Q1Gmc6+yl\/\/uid+WbWEHGb76x8C87y5+lXzDnvtdaLiOgGAAD\/\/2KYNGlS8f9R8H\/mzJn9AAAAAP\/\/YpKXl49hGAUMampqIQAAAAD\/\/2J6+vTpptGgYGC4f\/\/+LgAAAAD\/\/wJnnrlz587R0dEJBGUrWB4HAVDygeY9FDY2QEieVH3o4qSYj83dyGUNDIAEmZmZmW7cuHEwNjY2EAAAAP\/\/AwACY4fMv2ri1AAAAABJRU5ErkJggg==\"><\/image><\/svg><\/span><h3 class=\"eael-accordion-tab-title\">Q: What causes melt to push out (bleed) from the extruder vent port, and how can it be prevented?<\/h3><i aria-hidden=\"true\" class=\"fa-toggle  ti-minus\"><\/i><\/div><div id=\"elementor-tab-content-4327\" class=\"eael-accordion-content clearfix\" data-tab=\"7\" aria-labelledby=\"q-what-causes-melt-to-push-out-bleed-from-the-extruder-vent-port-and-how-can-it-be-prevented\"><p>A:<\/p><p>Vent bleeding usually happens when the feed rate is too high, the vacuum level is unstable, or the screw flight depth at the venting zone is improperly matched. Optimizing the <strong>extruder vent design<\/strong> and using specialized barrier or mixing elements helps maintain a stable, thin melt film that releases gas without leaking material.<\/p><\/div>\n\t\t\t\t\t<\/div><\/div>\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<style>\r\n.lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }.lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(25% - 20px);\r\n        }\r\n        .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n            \r\n            \r\n        }\r\n        .lwrp .lwrp-list-item img{\r\n            max-width: 100%;\r\n            height: auto;\r\n            object-fit: cover;\r\n            aspect-ratio: 1 \/ 1;\r\n        }\r\n        .lwrp .lwrp-list-item.lwrp-empty-list-item{\r\n            background: initial !important;\r\n        }\r\n        .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n        .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n            \r\n            \r\n            \r\n            \r\n        }@media screen and (max-width: 480px) {\r\n            .lwrp.link-whisper-related-posts{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-title{\r\n                \r\n                \r\n            }.lwrp .lwrp-description{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-multi-container{\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-multi-container ul.lwrp-list{\r\n                margin-top: 0px;\r\n                margin-bottom: 0px;\r\n                padding-top: 0px;\r\n                padding-bottom: 0px;\r\n            }\r\n            .lwrp .lwrp-list-double,\r\n            .lwrp .lwrp-list-triple{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-row-container{\r\n                justify-content: initial;\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n            .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n                \r\n                \r\n                \r\n                \r\n            };\r\n        }<\/style>\r\n<div id=\"link-whisper-related-posts-widget\" class=\"link-whisper-related-posts lwrp\">\r\n            <div class=\"lwrp-title\">Related Posts<\/div>    \r\n        <div class=\"lwrp-list-container\">\r\n                                            <div class=\"lwrp-list-multi-container\">\r\n                    <ul class=\"lwrp-list lwrp-list-double lwrp-list-left\">\r\n                        <li class=\"lwrp-list-item\"><a href=\"https:\/\/www.huazhaomachinery.com\/blog\/plastic-granulator-startup-guide\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Trouble-Free Post-Holiday Startup: Essential Tips for Your Plastic Granulator<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.huazhaomachinery.com\/blog\/e-waste-shredder-machine\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">E-Waste Shredder Machine for Electronic Waste Recycling<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.huazhaomachinery.com\/blog\/plastic-pelletizing-machine-for-plastic-recycling-complete-guide-2026\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Plastic Pelletizing Machine for Plastic Recycling: Complete Guide 2026<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.huazhaomachinery.com\/blog\/plastic-pelletizing-equipment\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Plastic Pelletizing Equipment: Machines, Processes &#038; 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Choosing whether your machine barrel features a single vent or a multi-stage configuration is not just a numbers game\u2014it is a critical engineering decision tailored to specific polymer materials and quality demands.<\/p>","protected":false},"author":1,"featured_media":4856,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"","ast-disable-related-posts":"","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":"default","ast-page-background-enabled":"default","ast-page-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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"ast-content-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-opacity":"","overlay-gradient":""},"tablet":{"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-opacity":"","overlay-gradient":""},"mobile":{"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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[14],"tags":[87,82,88,89,91],"class_list":["post-4854","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech-support","tag-energy-saving","tag-extruder-machine","tag-high-capacity","tag-machine-maintenance","tag-vented-extruder"],"_links":{"self":[{"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/posts\/4854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/comments?post=4854"}],"version-history":[{"count":8,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/posts\/4854\/revisions"}],"predecessor-version":[{"id":4865,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/posts\/4854\/revisions\/4865"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/media\/4856"}],"wp:attachment":[{"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/media?parent=4854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/categories?post=4854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huazhaomachinery.com\/id\/wp-json\/wp\/v2\/tags?post=4854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}