{"id":414,"date":"2026-11-06T21:32:01","date_gmt":"2026-11-06T13:32:01","guid":{"rendered":"https:\/\/kerkepm.com\/lp\/pet-recycling-line\/"},"modified":"2026-11-11T13:07:44","modified_gmt":"2026-11-11T05:07:44","slug":"pet-recycling-line","status":"publish","type":"page","link":"https:\/\/kerkepm.com\/es\/lp\/pet-recycling-line\/","title":{"rendered":"PET Recycling Line: hold the IV, not just the output"},"content":{"rendered":"<div class=\"k3 lp\">\n<div class=\"lp-bar\"><div class=\"wrap\">\n<a class=\"lp-logo\" href=\"\/\"><b>KERKE<\/b><span>Extrusion Equipment<\/span><\/a>\n<div class=\"lp-contact\"><span class=\"hide-s\">Since 2009 \u00b7 2,000+ sets \u00b7 70+ countries<\/span>\n<a href=\"https:\/\/wa.me\/8617733332876\" target=\"_blank\" rel=\"noopener\">WhatsApp +86 177 3333 2876<\/a><\/div>\n<\/div><\/div>\n\n<section class=\"lp-hero\"><div class=\"wrap\">\n<div>\n<p class=\"lp-kicker\">PET recycling<\/p>\n<h1>PET Recycling Line: hold the IV, not just the output<\/h1>\n<p class=\"lp-sub\">Water and heat destroy IV. A line that hits its tonnage and loses 0.05 dL\/g per pass is not a recycling line, it is a downgrade machine. Drying, screw design and vacuum decide which PET recycling line you bought.<\/p>\n<ul class=\"lp-bullets\"><li>Flake drying to under 50 ppm moisture before the feed throat<\/li><li>Low-shear screw geometry with a deep-flighted feed zone<\/li><li>Melt filtration and vacuum devolatilization sized for flake bulk density<\/li><\/ul>\n<div class=\"lp-hero-nums\"><div><b>&lt;0.02 dL\/g<\/b><span>IV loss per pass, trial basis<\/span><\/div><div><b>160 \u00b0C \u00d7 4\u20136 h<\/b><span>flake drying before extrusion<\/span><\/div><div><b>300\u20131,500 kg\/h<\/b><span>reference line output<\/span><\/div><\/div>\n<\/div>\n<div class=\"lp-formcard\" id=\"quote\">\n<h2>Get a costed configuration<\/h2>\n<p class=\"lp-fhint\">Reply within one working day, in English or Chinese.<\/p>\n<div class=\"lp-ok\" id=\"ok\">Thank you \u2014 your enquiry is in. We reply within one working day; if it is urgent, WhatsApp +86 177 3333 2876.<\/div>\n<form class=\"lp-form\" data-lp=\"pet-recycling-line\" onsubmit=\"return kerkeLead(event)\">\n<input type=\"hidden\" name=\"lp_slug\" value=\"pet-recycling-line\">\n<input type=\"hidden\" name=\"page_url\" value=\"\">\n<input type=\"hidden\" name=\"gclid\" value=\"\">\n<input type=\"hidden\" name=\"utm_source\" value=\"\">\n<input type=\"hidden\" name=\"utm_campaign\" value=\"\">\n<label for=\"n\">Name *<\/label><input id=\"n\" name=\"name\" required placeholder=\"Your name\">\n<div class=\"row2\">\n<div><label for=\"e\">Email *<\/label><input id=\"e\" name=\"email\" type=\"email\" required placeholder=\"you@company.com\"><\/div>\n<div><label for=\"w\">WhatsApp<\/label><input id=\"w\" name=\"whatsapp\" placeholder=\"+00 000 000 0000\"><\/div>\n<\/div>\n<div class=\"row2\">\n<div><label for=\"c\">Country<\/label><input id=\"c\" name=\"country\" placeholder=\"e.g. Vietnam\"><\/div>\n<div><label for=\"o\">Target output<\/label><input id=\"o\" name=\"output\" placeholder=\"kg\/h\"><\/div>\n<\/div>\n<label for=\"m\">What are you producing?<\/label>\n<select id=\"m\" name=\"product\"><option>PET bottle flake<\/option><option>PET film \/ strapping<\/option><option>Waste plastic (PE\/PP)<\/option><option>Other recycling<\/option><\/select>\n<label for=\"msg\">Material and anything else<\/label><textarea id=\"msg\" name=\"message\" rows=\"3\" placeholder=\"Filler grade, loading %, pellet shape, timeline\"><\/textarea>\n<button type=\"submit\">Send enquiry<\/button>\n<p class=\"err\" id=\"err\">Please check your name and email.<\/p>\n<p class=\"fine\">We use your details only to answer this enquiry. No newsletter, no list sharing.<\/p>\n<\/form>\n<\/div>\n<\/div><\/section>\n\n<figure class=\"lp-fig\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/lp-pet-a.webp\" alt=\"Large two-stage PET recycling extruder on the Kerke test floor\" loading=\"lazy\" width=\"1200\" height=\"800\"><figcaption>A two-stage PET line on the test floor: twin screw compounding plus single screw metering holds the IV.<\/figcaption><\/figure><section class=\"lp-proof\"><div class=\"wrap\"><div><b>Recycling & PET<\/b><span>one of our largest customer groups<\/span><\/div><div><b>\u2264 \u22120.09 MPa<\/b><span>vacuum at the devolatilization zone<\/span><\/div><div><b>150\u2013200 mesh<\/b><span>filtration where the application needs it<\/span><\/div><div><b>3\u20137 days<\/b><span>trial on your flakes<\/span><\/div><\/div><\/section>\n\n<nav class=\"wp-block-rank-math-toc-block lp-toc\" aria-label=\"On this page\"><b>On this page:<\/b><a href=\"#why\">Why it matters<\/a><a href=\"#specs\">Reference parameters<\/a><a href=\"#faq\">FAQ<\/a><a href=\"#quote\">Get a quote<\/a><\/nav>\n\n<figure class=\"lp-fig\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/water-cooled-strand-pelletizing-system-01-1200.webp\" alt=\"pet recycling line\" loading=\"lazy\" width=\"1200\" height=\"675\"><figcaption>Water-cooled strand pelletizing on a PET recycling line \u2014 strands die-face cut after the water bath.<\/figcaption><\/figure>\n\n<section class=\"lp-sec\" id=\"why\"><div class=\"wrap\">\n<h2>Where IV is lost, and how the line prevents it<\/h2>\n<p class=\"lede\">Every pass through heat and shear costs viscosity. The line cannot add IV back, so the design target of a PET recycling line is to lose as little as possible per pass.<\/p>\n<div class=\"lp-cols\"><div class=\"lp-box\"><h3>Moisture first<\/h3><p>Hydrolysis starts the moment wet flake meets a hot barrel. Drying to under 50 ppm at 160 \u00b0C for 4\u20136 h is not optional; a hopper dryer sized two sizes too small is the most common cost-cutting mistake on a PET recycling line.<\/p><\/div><div class=\"lp-box\"><h3>Shear, not just temperature<\/h3><p>Deep-flighted feed and a low-shear mixing section keep the melt from over-working. High-shear screw geometry raises output on paper and destroys IV in practice.<\/p><\/div><div class=\"lp-box\"><h3>Vacuum and filtration<\/h3><p>Devolatilization at \u22120.06 to \u22120.09 MPa removes the volatiles that cause bubbles and acetaldehyde; filtration catches the paper, caps and PP flakes that arrive with every bale.<\/p><\/div><\/div>\n<ul class=\"lp-check\"><li>Flake washing and drying duty confirmed<\/li><li>Screw geometry for low-shear conveying<\/li><li>Vacuum system and condenser sizing<\/li><li>Melt filter with automatic screen changer<\/li><li>Strand or underwater pelletizing for your downstream<\/li><li>IV test report before and after the trial pass<\/li><\/ul>\n<\/div><\/section>\n\n<section class=\"lp-sec alt\" id=\"specs\"><div class=\"wrap\">\n<h2>Reference parameters \u2014 PET recycling line<\/h2>\n<div class=\"lp-table\"><table><thead><tr><th>Parameter<\/th><th>Typical value<\/th><th>Note<\/th><\/tr><\/thead><tbody><tr><td>Input<\/td><td>bottle flake, washed, bulk density 250\u2013350 kg\/m\u00b3<\/td><td>film and strapping differ<\/td><\/tr><tr><td>Drying<\/td><td>160 \u00b0C \u00d7 4\u20136 h, &lt;50 ppm moisture<\/td><td>before the feed throat<\/td><\/tr><tr><td>Barrel temperature<\/td><td>270\u2013290 \u00b0C<\/td><td>set by IV target<\/td><\/tr><tr><td>Vacuum<\/td><td>\u22120.06 to \u22120.09 MPa<\/td><td>devolatilization zone<\/td><\/tr><tr><td>Filtration<\/td><td>80\u2013200 mesh<\/td><td>by downstream requirement<\/td><\/tr><tr><td>Output<\/td><td>300\u20131,500 kg\/h<\/td><td>reference, by screw diameter<\/td><\/tr><\/tbody><\/table><\/div>\n<p class=\"note\" style=\"font-size:12px;color:#767d87;margin:8px 0 0\">Reference values, subject to material trial. Final parameters are set on your own material.<\/p>\n<\/div><\/section>\n\n<section class=\"lp-sec lp-faq\" id=\"faq\"><div class=\"wrap\" style=\"max-width:820px\">\n<h2>Questions buyers ask before the call<\/h2>\n<details><summary>How much IV do you lose per pass?<\/summary><p>On washed bottle flake dried to under 50 ppm, a well-configured PET recycling line holds the loss near 0.02 dL\/g and below on a single pass. We measure IV before and after the trial and put both numbers in the report instead of a promise.<\/p><\/details><details><summary>Can the same line run film or strapping?<\/summary><p>Film needs forced feeding and pre-compaction because of bulk density; strapping needs a different die and cooling. It is the same platform with a different feed section, and we quote it that way.<\/p><\/details><details><summary>Do you supply the washing line?<\/summary><p>We supply the pelletizing line and integrate with your washing line. Send the flake specification and moisture content; the dryer and feed section are sized from those numbers.<\/p><\/details>\n<\/div><\/section>\n\n<figure class=\"lp-fig\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/lp-pet-b.webp\" alt=\"Twin screw PET recycling lines assembled in the Kerke Nanjing factory\" loading=\"lazy\" width=\"1200\" height=\"800\"><figcaption>PET recycling lines staged for final inspection.<\/figcaption><\/figure><section class=\"lp-rel\"><div class=\"wrap\"><b>Related pages on this site<\/b><ul><li><a href=\"\/applications\/pet-recycling\/\">PET pelletizing: process and parameters<\/a><\/li><li><a href=\"\/machines\/pelletizing\/\">Pelletizing systems: strand, water ring, underwater<\/a><\/li><li><a href=\"\/knowledge\/pelletizing-methods-compared\/\">Pelletizing methods compared<\/a><\/li><\/ul><\/div><\/section>\n\n<section class=\"lp-cta\" id=\"quote\"><div class=\"wrap\">\n<div><h2>Send 25 kg of flake \u2014 get an IV number, not a promise<\/h2><p>We run it, measure IV before and after, and send the report with the screw configuration we would quote for your PET recycling line.<\/p><\/div>\n<a class=\"btn-big\" href=\"#quote\">Get the quotation<\/a>\n<\/div><\/section>\n\n<div class=\"lp-foot\"><div class=\"wrap\">\nKerke Extrusion Equipment \u00b7 Nanjing, Jiangsu, China. Every pet recycling line is test-run on the customer's own material before shipment. Values are reference ranges, subject to material trial. \u00a9 Uptech \u2014 exclusive export partner of Kerke Extrusion.\n<\/div><\/div>\n\n<div class=\"lp-sticky\">\n<a class=\"t\" href=\"tel:+8617733332876\">Call<\/a>\n<a class=\"w\" href=\"https:\/\/wa.me\/8617733332876\" target=\"_blank\" rel=\"noopener\">WhatsApp<\/a>\n<a class=\"q\" href=\"#quote\">Get a quote<\/a>\n<\/div>\n<script>\nfunction kerkeLead(ev){\n  ev.preventDefault();\n  var f=ev.target, d=new FormData(f), o={};\n  d.forEach(function(v,k){o[k]=v;});\n  if(!o.name||!o.email||o.email.indexOf('@')&lt;0){document.getElementById('err').style.display='block';return false;}\n  o.action='kerke_lead';\n  var q=new URLSearchParams(location.search);\n  ['gclid','utm_source','utm_campaign','utm_term','utm_content'].forEach(function(k){\n    if(q.get(k)){o[k]=q.get(k);}\n    try{var saved=localStorage.getItem('k3_'+k); if(!o[k]&&saved){o[k]=saved;} if(q.get(k)){localStorage.setItem('k3_'+k,q.get(k));}}catch(e){}\n  });\n  o.page_url=location.href;\n  var btn=f.querySelector('button'); btn.disabled=true; btn.textContent='Sending\u2026';\n  fetch('\/wp-admin\/admin-ajax.php',{method:'POST',body:new URLSearchParams(o)})\n    .then(function(r){return r.json();})\n    .then(function(r){\n      if(r&&r.success){\n        f.style.display='none'; document.getElementById('ok').style.display='block';\n        window.dataLayer=window.dataLayer||[];window.dataLayer.push({event:'generate_lead',form:'lp-'+f.dataset.lp,value:0});\n        if(window.gtag){gtag('event','generate_lead',{form:'lp-'+f.dataset.lp});}\n      }else{btn.disabled=false;btn.textContent='Send enquiry';document.getElementById('err').style.display='block';}\n    })\n    .catch(function(){btn.disabled=false;btn.textContent='Send enquiry';document.getElementById('err').style.display='block';});\n  return false;\n}\n<\/script>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>KERKEExtrusion Equipment Since 2009 \u00b7 2,000+ sets \u00b7 70+ countries WhatsApp +86 177 3333 2876 PET recycling PET Recycling Line: hold the IV, not just the output Water and heat destroy IV. A line that hits its tonnage and loses 0.05 dL\/g per pass is not a recycling line, it is a downgrade machine. Drying, [&#8230;]\n","protected":false},"author":1,"featured_media":0,"parent":411,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-blank-landingpage.php","meta":{"footnotes":""},"application":[],"app_group":[],"class_list":["post-414","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/comments?post=414"}],"version-history":[{"count":0,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/414\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/411"}],"wp:attachment":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/media?parent=414"}],"wp:term":[{"taxonomy":"application","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/application?post=414"},{"taxonomy":"app_group","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/app_group?post=414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}